AU2018201354B2

AU2018201354B2 - Cold-drawn processing apparatus and processing method

Info

Publication number: AU2018201354B2
Application number: AU2018201354A
Authority: AU
Inventors: Lui Kam Ming
Original assignee: Hui Martin
Current assignee: Hui Martin
Priority date: 2017-03-06
Filing date: 2018-02-24
Publication date: 2021-02-04
Anticipated expiration: 2038-02-24
Also published as: TWI664034B; CN107186188B; AU2018201354A1; CN107186188A; TW201832844A

Abstract

The present invention is applicable to the technical field of mechanical processing, and provides a cold-drawn processing apparatus and a processing method. The 5 apparatus includes: at least one pulling rode ingot device (50) including a pulling rode bar (51) and a pulling rode ingot head (52) removably mounted below the pulling rode bar (51); and when, at initial processing position of the cold-drawn processing apparatus, the pulling rode ingot head (52) passing through a flow passage of a crystallizer (40) to insert into a molten alloy of the holding furnace (30) to tow an 10 alloy part upwardly from the holding furnace (30); at least one tension leveler (60) including: a positioning device (61) clamping an upper portion of the alloy part when the pulling rode ingot device (50) has towed the alloy part upwardly to reach a first predetermined position; when the positioning device (61) clamps the upper portion of the alloy part, an impact hammer (62) impacting the pulling rode ingot device (50) till 15 the pulling rode bar (51) is separated from the pulling rode ingot head (52); and, when the pulling rode ingot device (50) has towed the alloy part upwardly to reach a second predetermined position, shears (63) closing completely, and performing shearing operation on the alloy part. In view of this, the cold-drawn processing apparatus and method provided by the present invention save processing procedures and processing 20 time and heating apparatus in the cold-drawn processing. 50 10 40 4530 FIG. 1 50 51 42 41 molten alloy DK 521 544 FIG. 2

Description

10 40 4530

FIG. 1

50

51

42 41

molten alloy DK 521 544

FIG. 2

COLD-DRAWN PROCESSING APPARATUS AND PROCESSING METHOD FIELD OF THE INVENTION

[0001] The present invention relates to the technical field of mechanical processing, and more particularly, to a cold-drawn processing apparatus and a processing method.

DISCUSSION OF THE PRIOR ART

[0002] Metal can be produced in the continuous casting or strand casting, and cold drawn being one of the process. Aluminum alloy rods produced in a cold-drawn way have more advantages than that produced in a hot-drawn way, including surface smoothness, high dimensional precision, controllable strength and hardness of the alloy rods. Further, the continuous casting process can improve output, quality, productivity and cost effectiveness. Such casting way is also applicable to a copper alloy, a zinc alloy and other alloy material.

[0003] However, in the prior art, the cold-drawn way and an attemperator are used to store a molten metal at a temperature remaining to be slightly higher than a melting point of the metal, for example, the melting point of aluminum is 660.3 degrees, or different melting points of aluminum alloys with different compositions:

[0004] Chinese standard (GB) is as shown in Table one below:

Aluminum alloys designation Melting point range (°C) 2024 500to635 5052 607to650 5083 570to640 6061 580to650 7050 490 to 630 7075 475 to 635 Table one

[0005] Chinese standard (GB) for chemical compositions of various aluminum alloys designation is as shown in Table two below:

Alumi Si Fe Cu Mn Mg Cr Zn Ti Other Alum num inum

alloys each total Mini design mum ation 2024 0.232 0.5 3.8-4. 0.3- 1.2-1.8 0.1 0.25 0.15 0.05 0.15 Rema 0.9 ining 5052 0.25 0.4 0.1 0.1 2.2-2.8 0.15- 0.1 -- 0.05 0.15 Rema 0.35 ining 5083 0.238 0.4 0.1 0.3- 4.0-4.9 0.05- 0.25 0.15 0.05 0.15 Rema

1.0 0.25 ining

6061 0.236 0.7 0.15-0.4 0.15 0.8-1.2 0.04- 0.25 0.15 0.05 0.15 Rema 0.35 ining

7050 0.235 0.1 2.0-2.6 0.1 1.9-2.6 0.04 5.7-6.7 0.06 0.05 0.15 Rema 5 ining

7075 0.236 0.5 1.2-2.0 0.3 2.1-2.9 0.18- 5.1-6.1 0.2 0.05 0.15 Rema 0.28 ining

Table two

[0006] In one of ways of continuous casting the aluminum alloys, the aluminum rods produced in the cold-drawn way can provide an effective production method. Further, metals are produced in the cold-drawn way, which is one of the continuous casting ways, wherein the metal is drawn upwardly about eight meters using the upward drawing process to produce an eight-meter long aluminum alloy rod. If it needs to change the length of the alloy rod, or change to produce an aluminum alloy slab or alloy ingot, for example, a one-meter long slab, the cold-drawn tool has to be adjusted or cannot configure to support such production process.

[0007] When the aluminum alloy is at a high temperature, i.e., approximate to or roughly higher than the melting point, the aluminum alloy is soft, sticky, poor in fluidity and mold adhesive, which form conditions desired for cold drawing. Raw materials of the aluminum alloy are adjusted according to weight, for example, ratios of different metals represented by designations of different national standards above, and is placed on the line frequency furnace to heat and melt, and since electricity is used as energy source, it is also called a line frequency electric furnace. The line frequency furnace enables the metal to melt and rise in temperature, and heats uniformly with little burning loss, which facilitates adjusting compositions of a metal liquid and causing little pollution. The disadvantages of the line frequency electric furnace are a slow process in melting the cold materials, requiring a period of time to start from a cold furnace, and less flexibility in production, so it is more suitable for the continuous production process. The line frequency electric furnace has a low power factor, and needs to equip with a large number of compensating capacitors, which also increases the floor space and equipment investment. The common line frequency electric furnace has a capacity between six to ten tons. In other embodiments, a resistance furnace is used to replace the line frequency electric furnace as the heating apparatus for heating the alloys. Still further, other heating apparatus including a natural gas furnace is used. Specifically, the line frequency electric furnace is heated, and the metals are melted to a liquid to flow towards a holding furnace to be maintained above the melting point of the aluminum alloy, which are used as a standing step in the processing procedure. The standing step is to allow gas in the molten metal to slowly rise till the gas in the molten metal is completely released as much as possible during heat preservation and standing. After the standing procedure, the next procedure is rodding process, and the guiding rod apparatus generally comprises a crystallizer provided on the holding furnace. The main function of the crystallizer is to cool the molten alloy, and the crystallizer is substantially hollow where the molten metal flows through and cools. When the crystallizer has an inner section in circular form, the cold-drawn metal circular rod may be formed, or when the inner section is a rectangle form, the cold-drawn metal rectangular rod may be formed. The crystallizer generally consists of a graphite mold, a water cooling jacket, a protective jacket and the like. When the molten metal flows into an inner cavity of the crystallizer, first cooling is performed, and during the continuous casting, the cooled metal rod leaves from the inner cavity of the crystallizer upwardly to contact the air, and second cooling is performed.

[0008] In addition, in the prior art, a standard length of casting the alloy rod is six meters or other length, i.e., the alloy rod made with the above cold-drawn technology, when the alloy rod is drawn to a specific length, a pair of shears provided within the tension leveler shears off the metal rod, and continues to tow next section of alloy rod upwardly.

[0009] Further, if the length of the alloy rod is calibrated so as to change to produce the alloy slab with a length of one meter, it needs to stop the furnace and adjust height of the shears. According to the prior art, due to temperature and capacity of the line frequency furnace and the holding furnace, it requires more energy and time from stopping production to resuming normal production, and when stopping production to adjust the length of the metal rod, or transfer to produce the ingot, it takes time and wastes energy source.

[0010] In conclusion, the current cold-drawn processing technology obviously has inconvenience and defects in practical use, so it is necessary to make improvement.

SUMMARY OF THE INVENTION

[0011] With respect to the above defects, an object of the present invention is to provide a cold-drawn processing apparatus and a processing method to improve processing procedures and processing time and energy in the cold-drawn processing.

[0012] In order to realize the above object, the present invention provides a cold-drawn processing apparatus for processing a metal part, wherein the metal is a light metal or an alloy of light metal(s), comprising a raw material melting furnace, a holding furnace and at least one crystallizer, characterized in that the cold-drawn processing apparatus further includes:

[0013] at least one pulling rod ingot device including a pulling rod bar and a pulling rod ingot head removably mounted below the pulling rod bar; and when, at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head passing through a flow passage of the crystallizer to insert into a light metal or alloy of the holding furnace to tow the metal part upwardly from the holding furnace;

[0014] at least one tension leveler including:

[0015] a positioning device clamping an upper portion of the metal part when the pulling rod ingot device has towed the metal part upwardly to reach a first predetermined position;

[0016] when the positioning device clamps the upper portion of the metal part, an impact hammer impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head; and,

[0017] when the pulling rod ingot device has towed the metal part upwardly to reach a second predetermined position, shears closing completely, and performing shearing operation on the metal part.

[0017A] According to the cold-drawn processing apparatus, the crystallizer can also incorporate a mechanism for cooling of the part being processed, prior to its cold drawing. Cooling of the metal part (if still at higher than ambient temperature) is then completed when, at the end of processing, it is subjected to ambient conditions.

[0017B] Throughout the description, references to "an alloy part" or "the alloy part" should, where appropriate, be given the same meaning as indicated above for "a metal part". Where the context permits, the part can be formed from either a light metal or an alloy of light metal(s).

[0017C] Similarly, where the context permits, references to the "alloy" / "molten alloy" of the holding furnace include situations where the material within the holding furnace is either a light metal or an alloy.

[0018] According to the cold-drawn processing apparatus, the tension leveler may further include:

[0019] at least two pairs of towing clips including an upper towing clip clamping the upper portion of the alloy part when the positioning device clamps the upper portion of the alloy part, and a lower towing clip clamping a lower portion of the alloy part when the upper towing clip is continuously towing the alloy part to reach the second predetermined position; and

[0020] an impact hammer driver including springs and a driving motor pressing on the springs, the springs being connected to the impact hammer; the impact hammer driver pressing on the springs by rotation of the driving motor, and driving the impact hammer to impact the pulling rod ingot device.

[0021] According to the cold-drawn processing apparatus, the shears close partially, and perform partial operation of the shears on the alloy part when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position, and after the partial operation of the shears, the alloy part gets weak break points at corresponding positions.

[0022] According to the cold-drawn processing apparatus, a length of the sheared alloy part is a first predetermined length; the third predetermined position includes a plurality of positions, the alloy part has a plurality of weak break points, and the distance between two adjacent weak break points is a second predetermined length; the first predetermined length being greater than the second predetermined length.

[0023] According to the cold-drawn processing apparatus, the shears open completely at the first predetermined position; and

[0024] the shears close partially to have a 40% closure when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position.

[0025] According to the cold-drawn processing apparatus, the cold-drawn processing apparatus further includes:

[0026] a controller for presetting the first, second and third predetermined positions, and controlling cold-drawn processing procedures of the cold-drawn processing apparatus.

[0027] According to the cold-drawn processing apparatus, the crystallizer includes:

[0028] an inner sleeve provided with the flow passage;

[0029] an outer sleeve provided outside the inner sleeve, with a space being formed between the inner and outer sleeves, and a cooling liquid flowing in the space.

[0030] According to the cold-drawn processing apparatus, the flow passage has a circular or rectangular cross-section;

[0031] the inner sleeve and/or outer sleeve is made from graphite material; and

[0032] the cooling liquid is water or engine oil.

[0033] According to the cold-drawn processing apparatus, the pulling rod ingot head includes an upper end and a lower end, the upper end of the pulling rod ingot head having a larger cross-sectional area than that of the lower end;

[0034] the upper end of the pulling rod ingot head is provided with a recess adaptive to a bottom of the pulling rod bar, and having a circular or rectangular cross-section.

[0035] According to the cold-drawn processing apparatus, the tension leveler may further include:

[0036] a crystallizer fixing device for fixing at least one crystallizer, and controlling rise, fall and displacement of the crystallizer;

[0037] a fixed column for fixing the positioning device, the shears, the impact hammer, the towing clips and the impact hammer driver; and

[0038] mounting centers of the positioning device, the shears, and the towing clips being located on the same axis.

[0039] According to the cold-drawn processing apparatus, the raw material melting furnace and the holding furnace communicate with each other; and the alloy part may be an alloy rod or an alloy ingot.

[0040] According to the cold-drawn processing apparatus, the alloy rod may be an aluminum alloy rod; and the alloy ingot may be an aluminum alloy ingot.

[0041] In order to realize another inventive object of the present invention, the present invention also provides a method of processing a metal part, wherein the metal is a light metal or an alloy of light metal(s), using the cold-drawn processing apparatus of any one of the above items, the cold-drawn processing apparatus comprising a raw material melting furnace, a holding furnace and at least one crystallizer, and the method comprising:

[0042] A. when at least one pulling rod ingot device is at initial processing position of the cold-drawn processing apparatus, a pulling rod ingot head of the pulling rod ingot device passing through a flow passage of the crystallizer to insert into a molten light metal or alloy of the holding furnace to tow the metal part upwardly from the holding furnace;

[0043] B. when the pulling rod ingot device has towed the metal part upwardly to reach a first predetermined position, a positioning device of at least one tension leveler clamping an upper portion of the metal part;

[0044] C. when the positioning device clamps the upper portion of the metal part, an impact hammer of the tension leveler impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head; and

[0045] D. when the pulling rod ingot device has towed the metal part upwardly to reach a second predetermined position, shears of the tension leveler closing completely, and performing shearing operation on the metal part.

[0045A] According to the method, the metal part undergoes a cooling stage (prior to cold-drawing) while within the crystallizer. Cooling of the metal part (if still at higher than ambient temperature) is then completed when, at the end of processing, it is subjected to ambient conditions.

[0046] According to the method, the tension leveler may further include at least two pairs of towing clips including an upper towing clip and a lower towing clip; the step B further including:

[0047] when the positioning device clamps the upper portion of the alloy part, the upper towing clip clamping the upper portion of the alloy part, and, when the upper towing clip is continuously towing the alloy part to reach the second predetermined position, the lower towing clip clamping a lower portion of the alloy part;

[0048] and, prior to the step D, it may further include:

[0049] E. the shears close partially, and perform partial operation of the shears on the alloy part when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position, and after the partial operation of the shears, the alloy part gets weak break points at corresponding positions.

[0050] According to the method, in the step B, a length of the sheared alloy part is a first predetermined length;

[0051] In the step E, the third predetermined position includes a plurality of positions, the alloy part has a plurality of weak break points, and the distance between two adjacent weak break points is a second predetermined length; and

[0052] the first predetermined length is greater than the second predetermined length.

[0053] According to the method, the shears open completely when the pulling rod ingot device has towed the alloy part upwardly to reach a first predetermined position; and

[0054] the shears close partially to have a 40% closure when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position.

[0055] According to the method, the cold-drawn processing apparatus may further include an impact hammer driver including springs and a driving motor pressing on the springs, the springs being connected to the impact hammer;

[0056] in the step D, the impact hammer driver pressing on the springs by rotation of the driving motor, and driving the impact hammer to impact the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head.

[0057] According to the method, the cold-drawn processing apparatus may further include a controller; the method may further include:

[0058] Presetting, by the controller, the first, second and third predetermined positions.

[0059] According to the method, the crystallizer may include:

[0060] an inner sleeve provided with the flow passage;

[0061] an outer sleeve provided outside the inner sleeve, with a space being formed between the inner and outer sleeves, and a cooling liquid flowing in the space.

[0062] According to the method, the flow passage has a circular or rectangular cross section;

[0063] the inner sleeve and/or outer sleeve is made from graphite material; and

[0064] the cooling liquid is water or engine oil.

[0065] According to the method, the pulling rod ingot head includes an upper end and a lower end, the upper end of the pulling rod ingot head having a cross-sectional area larger than that of the lower end;

[0066] the upper end of the pulling rod ingot head is provided with a recess adaptive to a bottom of the pulling rod bar, and having a circular or rectangular cross-section.

[0067] According to the method, the tension leveler may further include:

[0068] a fixed column for fixing the positioning device, the shears, the impact hammer, the towing clips and the impact hammer driver; mounting centers of the positioning device, the shears, and the towing clips located on the same axis; and a crystallizer fixing device;

[0069] and, prior to the step A, it may include:

[0070] G. the crystallizer fixing device fixing at least one crystallizer, and placing the crystallizer at a predetermined height above the molten alloy of the holding furnace; or placing the crystallizer beside the holding furnace when cold-drawn processing is not taking place.

[0071] According to the method, the raw material melting furnace and the holding furnace communicate with each other; and the alloy part may be an alloy rod or an alloy ingot.

[0072] According to the method, the alloy rod may be an aluminum alloy rod; and the alloy ingot may be an aluminum alloy ingot.

[0073] By configuring the pulling rod ingot device of the cold-drawn processing apparatus to include a pulling rod bar and a pulling rod ingot head removably mounted below the pulling rod bar; when, at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head passing through a flow passage of the crystallizer to insert into a molten alloy of a holding furnace to tow the alloy part upwardly from the holding furnace; a positioning device of the tension leveler clamping an upper portion of the alloy part when the pulling rod ingot device has towed the alloy part upwardly to reach a first predetermined position; when the positioning device clamps the upper portion of the alloy part, an impact hammer impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head; and shears closing completely, and performing shearing operation on the alloy part when the pulling rod ingot device has towed the alloy part upwardly to reach a second predetermined position in the present invention, wherein the relative position of a height of the second predetermined position and of the shears corresponds to the length of the alloy part to be produced, the operators may rapidly produce the alloy parts with different lengths in the cold-drawn processing conveniently by adjusting the relative position of the height of the second predetermined position and of the shears. There is no need to stop production to adjust the length of the alloy part or transfer to produce the alloy slab, and saves processing time and energy source. Moreover, the alloy rod or slab may be cast with different lengths, and reduce the needs of stopping production procedure due to producing different products. It provides capability of producing products similar with the alloy ingot, increases flexibility of the production line, and whole competitiveness of the production enterprise.

BRIEF DESCRIPTION OF THE DRAWINGS

[0074] FIG. 1 is a schematic diagram of cold-drawn processing provided by the embodiment of the present invention.

[0075] FIG. 2 is a longitudinal section view of the crystallizer provided by the embodiment of the present invention.

[0076] FIG. 3A is a structure diagram of the tension leveler provided by the embodiment of the present invention.

[0077] FIG. 3B is a section view along an A-A direction in FIG. 3A.

[0078] FIG. 3C is a top view of FIG. 3A.

[0079] FIG. 3D is a schematic view of the tension leveler processing provided by the embodiment of the present invention.

[0080] FIG. 4A is a schematic view of the alloy rod with weak break points provided by the embodiment of the present invention.

[0081] FIG. 4B is section view along a B-B direction in FIG. 4A.

[0082] FIG. 5 is a flow chart of the cold-drawn processing method provided by the embodiment of the present invention.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

[0083] In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further explained in details in combination with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, instead of defining the present invention.

[0084] In different embodiments, the related technique is applicable to copper, aluminum, zinc, zinc alloy, copper alloy and aluminum alloy, and different metals or alloys having different characteristics. However, since the melting points are close, the tools are substantially the same, and they may also share the production furnace. Discussions in the present application are applicable to casting of metals or alloys.

[0085] Referring to FIGS. 1-2, 3A-3D and 4A-4D, in one embodiment of the present invention, a cold-drawn processing apparatus is provided for processing an alloy part 10, and comprising a raw material melting furnace 20, a holding furnace 30 and at least one crystallizer 40, and the cold-drawn processing apparatus further includes:

[0086] at least one pulling rod ingot device 50 including a pulling rod bar 51 and a pulling rod ingot head 52 removably mounted below the pulling rod bar 51; and when, at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head 52 passing through a flow passage 41 of the crystallizer 40 to insert into a molten alloy of a holding furnace 30 to tow the alloy part 10 upwardly from the holding furnace 30;

[0087] at least one tension leveler 60 including:

[0088] a positioning device 61 clamping an upper portion of the alloy part 10 when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach a first predetermined position;

[0089] when the positioning device 61 clamps the upper portion of the alloy part 10, an impact hammer 62 impacting the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52; and

[0090] when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach a second predetermined position, shears 63 closing completely, and performing shearing operation on the alloy part 10.

[0091] The cold-drawn processing apparatus provided in this embodiment is used for processing the alloy part 10. The cold-drawn processing apparatus comprises a raw material melting furnace 20, a holding furnace 30 and at least one crystallizer 40. The raw material melting furnace 20 of the alloy may be a line frequency furnace. The raw material melting furnace 20 heats and melts the alloy, and the holding furnace 30 maintains a temperature of the molten alloy to be slightly higher than a melting point of the alloy, wherein one pulling rod ingot device 50 corresponds to one crystallizer 40. In this embodiment, the pulling rod ingot device 50 includes a pulling rod bar 51 and a pulling rod ingot head 52 removably mounted below the pulling rod bar 51; and,

[0092] when at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head 52 passing through a flow passage 41 of the crystallizer 40 to insert into a molten alloy of the holding furnace 30 to tow the alloy part 10 upwardly from the holding furnace 30 (i.e., the pulling rod ingot device 50 prepares to start towing the alloy part 10 from the holding furnace 30). Specifically, cooling of the molten alloy casts the alloy rod, and the molten alloy flows within the crystallizer 40 to perform the first cooling. The pulling rod ingot device 50 falls to the crystallizer 40 from a top of the holding furnace 30 by a towing device, and the towing device tows upwardly, i.e., the pulling rod ingot device 50 starts the pulling rod ingot within the crystallizer 40 to cold-draw upwardly. In addition, the positioning device 61 of the tension leveler 60 clamps the upper portion of the alloy part 10 when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach the first predetermined position; when the positioning device 61 clamps the upper portion of the alloy part 10, the impact hammer 62 impacts the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52; after the pulling rod bar 51 is separated from the pulling rod ingot head 52, the pulling rod bar 51 may be stored by a storage device, and a new pulling rod ingot device 50 is rapidly called into use to make production of the next alloy part. When the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach the second predetermined position, the shears 63 close completely, and perform shearing operation on the alloy part 10. The relative position of a height of the second predetermined position and of the shears 63 corresponds to the length of the alloy part 10 to be produced. Accordingly, the operators may rapidly produce the alloy parts with different lengths in the cold-drawn processing conveniently by adjusting the relative position of the height of the second predetermined position and of the shears 63. There is no need to stop production to adjust the length of the alloy part or transfer to produce the alloy ingot, and cause waste of the processing time and heating apparatus like in the prior art. In one embodiment of the present invention, the alloy part 10 may be an alloy rod or an alloy ingot. Preferably, the alloy rod is an aluminum alloy rod, and the alloy ingot is an aluminum alloy ingot.

[0093] In one embodiment of the present invention, the tension leveler 60 further includes:

[0094] a crystallizer fixing device 45 for fixing at least one crystallizer 40, and controlling rise, fall and displacement of the crystallizer 40;

[0095] a fixed column 66 for fixing the positioning device 61, the shears 63, the impact hammer 62, the towing clips 65 and the impact hammer driver 64; and

[0096] mounting centers of the positioning device 61, the shears 63, and the towing clips 65 located on the same axis.

[0097] In this embodiment, the line frequency furnace as shown on the left of FIG. 1 is used for adding the metal raw materials or different metal raw materials desired for the alloy into the line frequency furnace proportionally to be heated to be higher than the melting point of the metal or alloy, and the molten metal is guided to the holding furnace 30 on the right of FIG. 1 for standing and cooling after the air in the molten metal evaporates gradually. FIG. 1 shows the first cooling within the crystallizer 40 using water or other way in the procedure of continuous cold-drawing the alloy rod. As the finished alloy rod is towed upwardly, a space formed within the crystallizer 40 is filled with the molten alloy in the holding furnace 30, the alloy rod is cooled and hardened because of the crystallizer 40, and the alloy rod is drawn upwardly to leave the crystallizer 40 and directly contact the air. The alloy rod contacts the air to further perform the second cooling.

[0098] In one embodiment of the present invention, the tension leveler 60 further includes:

[0099] at least two pairs of towing clips 65 including an upper towing clip 651 clamping the upper portion of the alloy part when the positioning device 61 clamps the upper portion of the alloy part 10, and a lower towing clip 652 clamping a lower portion of the alloy part 10 when the upper towing clip 651 is continuously towing the alloy part 10 to reach the second predetermined position; and

[0100] an impact hammer driver 64 including springs and a driving motor pressing on the springs, the springs being connected to the impact hammer 62; the impact hammer driver 64 pressing on the springs by rotation of the driving motor, and driving the impact hammer 62 to impact the pulling rod ingot device 50.

[0101] In this embodiment, the tension leveler 60 includes at least two pairs of towing clips 65. The upper towing clip 651 clamps the upper portion of the alloy part when the positioning device 61 clamps the upper portion of the alloy part 10, i.e., when the upper towing clip 651 rises to a predetermined height, for example, to eight meters, the tension leveler 60 falls to a position as shown in FIG. 3D. At this time, if the shears 63 of the tension leveler 60 shear off the alloy part 10, a length of the alloy part 10 is a first predetermined length, for example, eight meters. The positioning device of the tension leveler 60 folds and fixes a bottom of the cold-drawn alloy part 10, and another towing clip 65 falls, folds and clamps the alloy part 10 at a lower position. As displayed in FIG. 3D, a pair of shears 63 of the tension leveler 60 folds and shears off the alloy part 10, the upper towing clip 651 tows the alloy part 10 which completes the cold-drawn procedure and has a first predetermined length to leave the holding furnace 30 for subsequent processing and further lowering of the temperature. The lower towing clip 652 continues to rise for cooling. A plurality of parts of the tension leveler 60 are connected by the fixed column 66. The positioning device 61 is in a foldable pincer like arrangement, and the pair of shears 63 is foldable powerful shears and may shear off the alloy part 10. The impact hammer 62 is driven by the impact hammer driver 64 to impact the pulling rod bar 51 till it leaves the pulling rod ingot head 52.

[0102] In one embodiment of the present invention, when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach the third predetermined position, the shears 63 of the tension leveler 60 close partially, and perform partial operation of the shears 63 on the alloy part 10, and after the partial operation of the shears 63, the alloy part 10 gets weak break points 101 at corresponding positions, as shown in FIG. 4. Specifically, a length of the sheared alloy part 10 is a first predetermined length; the third predetermined position may include a plurality of positions, the alloy part 10 has a plurality of weak break points 101, and the distance between two adjacent weak break points 101 is a second predetermined length; the first predetermined length is greater than the second predetermined length, for example, when processing a five-meter long alloy part 10, the alloy part 10 hasfive weak break points 101, so the first predetermined length is five meters, and the second predetermined length is one meter. Specifically, during processing, the shears 63 open completely when the pulling rod ingot device has towed the alloy part upwardly to reach the first predetermined position, and close completely when the pulling rod ingot device has towed the alloy part upwardly to reach the second predetermined position; the shears 63 close partially to have a 40% closure when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position.

[0103] In one embodiment of the present invention, whenever the towing clips 65 rise one meter, the tension leveler 60 falls to the position as shown in FIG. 3D, for example, the second predetermined length is one meter, and the pair of shears 63 of the tension leveler 60 clamps about 40% to form one weak break point 101. Whenever a total length is the first predetermined length, the pair of shears 63 of the tension leveler 60 latches and shears off the alloy part 10. As displayed in FIG. 4, the cold-drawn processing apparatus further comprises a controller for presetting the first, second and third predetermined positions. Of course, the controller also controls working of various parts of the cold-drawn processing apparatus through the control program, i.e., controls cold drawn processing procedures of the cold-drawn processing apparatus.

[0104] In one embodiment of the present invention, during the cold-drawn processing of the cold-drawn processing apparatus, when the alloy part 10 rises by a second predetermined length, the tension leveler 60 falls to a position as shown in FIG. 3A, and the pair of shears 63 of the tension leveler 60 latches about 40% to form the weak break point 101 as shown in FIG. 4. Further, when the alloy part 10 rises by a first predetermined length, the tension leveler 60 falls to the position as shown in FIG. 3D, another lower towing clip 652 falls to a position below the pair of shears 63 of the tension leveler, and the pair of shears 63 of the tension leveler 60 latches and shears off the alloy part 10 to form a new alloy part 10 for continuous cooling. The positioning device 61 of the tension leveler 60 releases the fixed alloy part 10, and the entire tension leveler 60 leaves the top of the holding furnace 30. The upper towing clip 65 drives the alloy part 10 which has completed cold-drawing to leave the top of the holding furnace 30, and the lower towing clip 652 continues to rise.

[0105] Referring to FIG. 2, in one embodiment of the present invention, the crystallizer 40 of the cold-drawn processing apparatus includes:

[0106] an inner sleeve 42 provided define the flow passage 41;

[0107] an outer sleeve 43 provided outside the inner sleeve 42, with a space 44 being formed between the inner and outer sleeves 42 and 43, a cooling liquid flowing in the space 44. The flow passage 41 has a circular or rectangular cross-section; the inner sleeve 42 and/or outer sleeve 43 is made from graphite material; and the cooling liquid is water or engine oil.

[0108] In this embodiment, the crystallizer 40 is formed of one inner sleeve 42 and one outer sleeve 43, and the space 44 between the inner sleeve 42 and the outer sleeve 43 is used as a flow passage for cooling fluid. The cooling liquid is used for cooling, and the molten metal flows through the inner cavity of the crystallizer 40 for the first cooling. The inner sleeve 42 of the crystallizer 40 defines a flow passage 41 from bottom to top, and the cross-section of the flow passage 41 may be a circle for producing cylindrical metal rods, or may be a rectangle for producing rectangular metals. In one embodiment of the present invention, the outer sleeve 43 and the inner sleeve 42 are made from graphite material. The graphite has characteristics mainly in high temperature resistance, high-thermal conductivity, and lubrication. A liquid may flow between the inner sleeve 42 and the outer sleeve 43, and the flowing liquid may be used for cooling. The high-thermal conductivity can effectively cool the molten alloy flowing through the inner cavity (i.e., the flow passage 41) formed from the inner sleeve 42 of the crystallizer 40, and the lubricating characteristic of the graphite prevents the molten alloy from attaching on the surface of the inner walls of inner sleeve 42 after cooling down.

[0109] In one embodiment of the present invention, the cold-drawn processing apparatus takes cold-drawn casting of the alloy rod for example using the raw material melting furnace 20 (which is also called as the line frequency furnace) and the holding furnace 30, the raw material melting furnace 20 and the holding furnace 30 communicate with each other; the molten alloy melts and maintains at a temperature just above the melting point of the alloy, for example, the casted GB aluminum alloy 5052 has a melting point from 607°C to 650°C, and the temperature of the holding furnace 30 is maintained around 680°C. The crystallizer 40 falls till the crystallizer 40 is partially below the molten alloy, and the pulling rod ingot device 50 falls within the crystallizer 40 to a position approximately as shown in FIG. 2, i.e., a connection position of the pulling rod bar 51 and the pulling rod ingot head 52 is above the molten alloy. The crystallizer 40 starts to add the cooling liquid for the first cooling of the molten alloy in the space between the flow passage 41 defined by the inner sleeve 42 of the crystallizer 40 and the pulling rod ingot device 50. When the molten alloy is semi-solidified, the pulling rod ingot device 50 starts to tow upwardly, and a top of the semi-solidified point of the alloy is at a connection opening of the pulling rod ingot device 50 and above the alloy rod. Since the pulling rod bar 51 rises, a vacuum space is formed in the crystallizer 40, and is filled with the molten alloy in the holding furnace 30.

[0110] Referring to FIGS. 3A, 3B, 3C and 3D, in one embodiment of the present invention, the pulling rod ingot head 52 of the cold-drawn processing apparatus includes an upper end and a lower end, and the upper end of the pulling rod ingot head 52 has a larger cross-sectional area than that of the lower end;

[0111] the upper end of the pulling rod ingot head 52 is provided with a recess 521 adaptive to a bottom of the pulling rod bar 51, and having a circular or rectangular cross-section.

[0112] In this embodiment, the pulling rod ingot head 52 is provided with a recess 521 having a circular cross-section. Referring to FIG. 3A, under the circumstance that the pulling rod ingot head 52 is fixed, the pulling rod bar 51 may move in accordance with a direction of an axis of the recess 521 so that the pulling rod bar 51 is disengaged from the pulling rod ingot head 52. In the absence of a transverse tension, weight of the pulling rod ingot head 52 will fix the pulling rod ingot head 52 below the pulling rod bar 51. As shown in FIG. 3B, taking processing of an alloy rod as an example, the alloy rod is drawn upwardly by the pulling rod bar 51, the portion leaving the crystallizer 40 performs the second cooling, and when the pulling rod bar 51 rises to a predetermined height, the positioning device 61 of the tension leveler 60 and the towing clips 65 fix the alloy rod. Under such circumstance, the bottom of the pulling rod ingot head 52 is slightly higher than the bottom of the positioning device 61 of the tension leveler 60, and the pair of shears 63 provided on the tension leveler 60 folds and shears off the alloy rod at the position where the pair of shears 63 is.

[0113] In one embodiment of the present invention, taking processing of an alloy rod as an example, the processing procedure of the cold-drawn processing apparatus further includes: the pulling rod bar 51 rises to a predetermined height about a height as shown in FIGS. 3A and 3B, the positioning device 61 of the tension leveler 60 and the pair of shears 63 open and fall to a position as shown in FIGS. 3A and 3B, the positioning device 61 of the tension leveler 60 latches and fixes the top of the alloy rod, and the position allows that a position where the impact hammer 62 of the tension leveler 60 may impact is an end of the pulling rod bar 51 close to the top of the pulling rod ingot head 52. The towing clips 65 from top to bottom fall below the pair of shears 63 of the tension leveler 60, and latch and clamp a lower end of the alloy rod. The impact hammer driver 64 drives the impact hammer 62 to impact the pulling rod bar 51 and disengage the pulling rod bar 51 from the pulling rod ingot head 52, and the pair of shears 63 of the tension leveler 60 latches and shears off the alloy rod. The pulling rod bar 51 is disengaged from the pulling rod ingot head 52 to be stored upwardly, the tension leveler 60 withdraws various parts arranged by the fixed column 66 and places the pulling rod ingot head 52 of the alloy rod well for reuse of the pulling rod ingot head 52. The towing clips 65 continue to rise and continue to cool upwardly, and an upward velocity depends on a velocity of cooling the alloy rod. In one of the embodiments, the upward velocity of the towing clips 65 is 1mm per minute.

[0114] The towing clips 65 are not shown in FIG. 3C, taking processing of an alloy rod as an example, the pulling rod ingot device 50 tows the alloy rod upwardly to stay at a specific position (i.e., the first predetermined position), the positioning device 61 of the tension leveler 60 folds and fixes the alloy rod, and the towing clips 65 not shown in the figures fall, fold and fix the alloy rod. The impact hammer 62 is impacted from right to left in FIG. 3C by the impact hammer driver 64 to separate the pulling rod bar 51 from the fixed pulling rod ingot head 52. The pair of shears 63 of the tension leveler 60 latches and shears off the alloy rod. Towing of the pulling rod bar 51 retracts the pulling rod bar 51 upwardly, the positioning device 61 of the tension leveler 60 clamps the top of the alloy rod in a folding way to retract the pulling rod ingot head 52 together, and transfer outside the top of the holding furnace 30, and the fixing device fixes the top of the alloy rod in a withdrawer (not shown in the figures) together with the pulling rod ingot head 52. The lower towing clip 652 continues to rise for cooling: making a space in the crystallizer 40 due to the semi-solidified alloy rod rising, filling the space with the molten alloy in the holding furnace 30, performing the first cooling in the crystallizer 40, and performing the second cooling after the alloy rod leaves the crystallizer 40 upwardly, wherein the impact hammer driver 64 includes springs and a driving motor pressing on the springs, the springs connected to the impact hammer 62; the impact hammer driver 64 presses on the springs by rotation of the driving motor, and drives the impact hammer 62 to impact the pulling rod ingot device 50.

[0115] Referring to FIG. 5, in one embodiment of the present invention, it provides a method of processing an alloy part 10 using the cold-drawn processing apparatus provided by the multiple embodiments above, the cold-drawn processing apparatus comprises a raw material melting furnace 20, a holding furnace 30 and at least one crystallizer 40, the method comprises:

[0116] in step S501, when at least one pulling rod ingot device 50 is at initial processing position of the cold-drawn processing apparatus, a pulling rod ingot head 52 of the pulling rod ingot device 50 passing through a flow passage 41 of the crystallizer 40 to insert into a molten alloy of the holding furnace 30 to tow the alloy part 10 upwardly from the holding furnace 30;

[0117] in step S502, when the pulling rod ingot device 50 tows the alloy part 10 upwardly to reach a first predetermined position, a positioning device 61 of at least one tension leveler 60 clamping an upper portion of the alloy part 10;

[0118] in step S503, when the positioning device 61 clamps the upper portion of the alloy part 10, an impact hammer 62 of the tension leveler 60 impacting the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52; and

[0119] in step S504, when the pulling rod ingot device 50 tows the alloy part 10 upwardly to reach a second predetermined position, shears 63 of the tension leveler 60 closing completely, and performing shearing operation on the alloy part 10.

[0120] In this embodiment, the method that the cold-drawn processing apparatus processes the alloy part 10 is: when the pulling rod ingot device 50 is at initial processing position of the cold-drawn processing apparatus, a pulling rod ingot head 52 of the pulling rod ingot device 50 passing through a flow passage 41 of the crystallizer 40 to insert into a molten alloy of the holding furnace 30 to tow the alloy part 10 upwardly from the holding furnace 30; when the pulling rod ingot device 50 tows the alloy part 10 upwardly to reach a first predetermined position, a positioning device 61 of the tension leveler 60 clamping an upper portion of the alloy part 10; when the positioning device 61 clamps the upper portion of the alloy part 10, an impact hammer 62 of the tension leveler 60 impacting the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52; and when the pulling rod ingot device 50 tows the alloy part 10 upwardly to reach a second predetermined position, shears 63 of the tension leveler 60 closing completely, and performing shearing operation on the alloy part 10. Specifically, cooling of the molten alloy casts the alloy rod, and the molten alloy flows within the crystallizer 40 to perform the first cooling. The pulling rod ingot device 50 falls to the crystallizer 40 from a top of the holding furnace 30 by a towing device, and the towing device tows upwardly, i.e., the pulling rod ingot device 50 starts the pulling rod ingot within the crystallizer 40 to cold- draw upwardly. In addition, the positioning device 61 of the tension leveler 60 clamps the upper portion of the alloy part 10 when the pulling rod ingot device 50 tows the alloy part 10 upwardly to reach the first predetermined position; the impact hammer 62 impacts the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52 when the positioning device 61 clamps the upper portion of the alloy part 10; after the pulling rod bar 51 is separated from the pulling rod ingot head 52, the pulling rod bar 51 may be stored by a storage device, and a new pulling rod ingot device 50 is rapidly called into use to make production of the next alloy part. The shears 63 close completely, and perform shearing operation on the alloy part 10 when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach the second predetermined position. The relative position of a height of the second predetermined position and of the shears 63 corresponds to the length of the alloy part 10 to be produced. Accordingly, the operators may rapidly produce the alloy parts with different lengths in the cold-drawn processing conveniently by adjusting the relative position of the height of the second predetermined position and of the shears 63. There is no need to stop production to adjust the length of the alloy part or transfer to produce the alloy ingot, and cause waste of the processing time and heating apparatus like in the prior art. In one embodiment of the present invention, the alloy part 10 may be an alloy rod or an alloy ingot. Preferably, the alloy rod is an aluminum alloy rod, and the alloy ingot is an aluminum alloy ingot.

[0121] In one embodiment of the present invention, the tension leveler 60 further includes at least two pairs of towing clips 65 including an upper towing clip 651 and a lower towing clip 652; and the step S502 further comprises:

[0122] the upper towing clip 651 clamping the upper portion of the alloy part when the positioning device 61 clamps the upper portion of the alloy part 10, and the lower towing clip clamping a lower portion of the alloy part when the upper towing clip is continuously towing the alloy part to reach the second predetermined position.

[0123] The tension leveler 60 further includes at least two pairs of towing clips 65; and the step S502 further comprises:

[0124] at least two pairs of towing clips 65 clamping the lower portion of the alloy part 10 when the positioning device 61 clamps the upper portion of the alloy part 10.

[0125] In this embodiment, the tension leveler 60 includes at least two pairs of towing clips 65. The upper towing clip 651 clamps the upper portion of the alloy part when the positioning device 61 clamps the upper portion of the alloy part 10, i.e., when the upper towing clip 651 rises to a predetermined height, for example, to eight meters, the tension leveler 60 falls to a position as shown in FIG. 3D. At this time, if the shears 63 of the tension leveler 60 shear off the alloy part 10, a length of the alloy part 10 is a first predetermined length, for example, eight meters. The positioning device of the tension leveler 60 folds and fixes a bottom of the cold-drawn alloy part 10, and another towing clip 65 falls, folds and clamps the alloy part 10 at a lower position. As displayed in FIG. 3D, a pair of shears 63 of the tension leveler 60 folds and shears off the alloy part 10, the upper towing clip 651 tows the alloy part 10 which completes the cold-drawn procedure and has a first predetermined length to leave the holding furnace 30 for subsequent processing and further lowering the temperature. The lower towing clip 652 continues to rise for cooling. A plurality of parts of the tension leveler 60 are connected by the fixed column 66. The positioning device 61 is in a foldable pincer-like arrangement, and the pair of shears 63 is foldable powerful shears and may shear off the alloy part 10. The impact hammer 62 is driven by the impact hammer driver 64 to impact the pulling rod bar 51 till it leaves the pulling rod ingot head 52.

[0126] In one embodiment of the present invention, prior to the step S504, it further comprises:

[0127] In step S505, the shears 63 close partially, and perform partial operation of the shears 63 on the alloy part 10 when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach a third predetermined position, and after the partial operation of the shears 63, the alloy part 10 gets weak break points 101 at corresponding positions.

[0128] In this embodiment, the shears 63 of the tension leveler 60 close partially, and perform partial operation of the shears 63 on the alloy part 10 when the pulling rod ingot device 50 has towed the alloy part 10 upwardly to reach the third predetermined position, and after the partial operation of the shears 63, the alloy part 10 gets weak break points 101 at corresponding positions, as shown in FIG. 4. Specifically, a length of the sheared alloy part 10 is a first predetermined length; the third predetermined position may include a plurality of positions, the alloy part 10 has a plurality of weak break points 101, and a length between two adjacent weak break points 101 is a second predetermined length; the first predetermined length is larger than the second predetermined length, for example, when processing a five-meter long alloy part 10, the alloy part 10 has five weak break points 101, so the first predetermined length is five meters, and the second predetermined length is one meter. Specifically, during processing, the shears 63 open completely at the first predetermined position, and close completely at the second predetermined position; the shears 63 close partially to have a closure of 40% at the third predetermined position.

[0129] In step S502, a length of the sheared alloy part 10 is a first predetermined length;

[0130] In step S505, the third predetermined position includes a plurality of positions, the alloy part 10 has a plurality of weak break points 101, and a length between two adjacent weak break points 101 is a second predetermined length; wherein the first predetermined length is greater than the second predetermined length. The shears 63 open completely at the first predetermined position; and the shears 63 close partially to have a closure of 40% when the pulling rod ingot device has towed the alloy part upwardly to reach a third predetermined position.

[0131] In one embodiment of the present invention, the cold-drawn processing apparatus further comprises an impact hammer driver 64 including springs and a driving motor pressing on the springs, the springs connected to the impact hammer 62;

[0132] in step S504, the impact hammer driver 64 presses on the springs by rotation of the driving motor, and drives the impact hammer 62 to impact the pulling rod ingot device 50 till the pulling rod bar 51 is separated from the pulling rod ingot head 52.

[0133] In this embodiment, the raw material melting furnace 20 of the alloy, such as the line frequency furnace, and the holding furnace 30, each maintains a temperature of the molten alloy to be slightly higher than the melting point of the alloy. The raw material melting furnace 20 and the holding furnace 30 communicate with each other. Cooling of the molten alloy casts the alloy rod, and the molten alloy performs the first cooling in the flow passage of the crystallizer 40. The pulling rod ingot device 50 starts the pulling rod ingot within the crystallizer 40 to cold-draw upwardly, and the pulling rod ingot device 50 includes a pulling rod bar 51 and a pulling rod ingot head 52 removably mounted below the pulling rod bar 51. The pulling rod ingot device 50 falls to the crystallizer 40 from a top of the holding furnace 30 by a towing device, and the towing device tows upwardly. The tension leveler 60 includes the positioning device 61, the pair of shears 63, and the impact hammer 62 connected to the impact hammer driver 64 by the fixed column 66. The positioning device 61 is in a foldable pincer-like arrangement, and the pair of shears 63 are foldable powerful shears and may shear off the alloy part. The impact hammer 62 is driven by the impact hammer driver 64 to impact the pulling rod bar 51 till it leaves the pulling rod ingot head 52. The fixed column 66 is used for fixing and setting the above various parts.

[0134] In one embodiment of the present invention, the cold-drawn processing apparatus further includes a controller; and the method further includes:

[0135] presetting, by the controller, the first, second and third predetermined positions, and controlling cold-drawn processing procedures of the cold-drawn processing apparatus, i.e., further, respective cold-drawn devices are controlled in a program control way, including cooperating with operations of the pulling rod ingot device 50, the tension leveler 60, and the towing clips 65. One holding furnace 30 may be configured with one or more crystallizers 40, each configured with one pulling rod ingot device 50, one tension leveler 60, and at least two pairs of towing clips 65. A plurality of crystallizers 40 are mounted on a fixing device of the crystallizer, and may rise and fall simultaneously.

[0136] In one embodiment of the present invention, the crystallizer 40 includes:

[0137] an inner sleeve 42 provided with the flow passage 41;

[0138] an outer sleeve 43 provided outside the inner sleeve 42, with a space 44 being formed between the inner and outer sleeves 42 and 43, and a cooling liquid flowing in the space 44. The flow passage 41 has a circular or rectangular cross-section; the inner sleeve 42 and/or outer sleeve 43 is made from graphite material; and the cooling liquid is water or engine oil.

[0139] In one embodiment of the present invention, the pulling rod ingot head 52 includes an upper end and a lower end, the upper end of the pulling rod ingot head 52 having a larger cross-sectional area than that of the lower end;

[0140] the upper end of the pulling rod ingot head 52 is provided with a recess 521 adaptive to a bottom of the pulling rod bar 51, and having a circular or rectangular cross section.

[0141] In one embodiment of the present invention, the pulling rod ingot device 50 has a shape approximately fitting with a hollow section of the crystallizer 40, for example, the crystallizer 40 has the circular hollow section, the pulling rod ingot device 50 has a circular shaper, and the function is to tow the cooled alloy rod upwardly. The pulling rod ingot device 50 includes the pulling rod ingot head 52, the pulling rod bar 51 and a device for storing the pulling rod bar 51. The shape and size of the pulling rod ingot head 52 are substantially the same as the inner cavity of the crystallizer 40, and the function of the pulling rod bar 51 with the pulling rod ingot head 52 is to block a lower opening of the crystallizer 40 using the pulling rod ingot head 52 before starting to cold draw so that the molten metal is solidified at the pulling rod ingot head 52, and the casting slab is pulled out by pulling the pulling rod ingot device 50 upwardly. After passing through the two cooling regions and the tension leveler 60, the pulling rod bar 51 is disengaged from the casting slab, and enters into the storage device for use in the next casting. In one of the embodiments, the pulling rod ingot device 50 is actually a solid curved round rod with a protruding head, and the pulling rod bar 51 has a detachable pulling rod ingot head. When the casting slab enters into the tension leveler 60, an auxiliary impact hammer 62 will automatically press or impact the pulling rod bar 51 so that the pulling rod bar 51 and the pulling rod ingot head 52 are separated from the casting slab. In the tension leveler 60, the molded casting slab is towed upwardly. A towing velocity is determined in accordance with physical characteristics of the casted melt or alloy. The above continuous cold-drawn procedure and tools are applicable to casting of copper and aluminum with low melting points, and alloy rod and slab of copper and aluminum.

[0142] In one embodiment of the present invention, the tension leveler 60 further includes:

[0143] a fixed column 66 for fixing the positioning device 61, the shears 63, the impact hammer 62, the towing clips 65 and the impact hammer driver 64; mounting centers of the positioning device 61, the shears 63, and the towing clips 65 located on the same axis; and a crystallizer fixing device;

[0144] prior to step S501, it comprises:

[0145] the crystallizer fixing device fixing at least one crystallizer 40, and placing the crystallizer 40 at a predetermined height above the molten alloy of the holding furnace 30; or placing the crystallizer 40 beside the holding furnace 30 when cold-drawn processing is not taking place.

[0146] In one embodiment of the present invention, taking processing of an alloy rod as an example, the shears 63 provided within the tension leveler 60 is equipped with a program control device. When the pair of shears 63 is at the first position, the pair of shears 63 is fully expanded, i.e., the metal rod or slab may move upwardly in the expanded shears 63 without contact. When the pair of shears 63 is at the second position, the pair of shears 63 is semi-expanded, and when the pair of shears 63 moves from the first position to the second position, the shears 63 generally shear off about 40% of the alloy rod to form one weak break point 101, i.e., the area of the unbroken cross section is about 60% of the area of the cross section of the entire alloy rod. When the pair of shears 63 is at the third position, the pair of shears 63 closes completely, and when the pair of shears 63 moves from the first position to the third position, the shears 63 shear off the alloy rod. Preferably, the pair of shears 63 is program controlled by the computer of the controller. When continuous cold-drawing, the shears 63 are fully expanded at the first position, and whenever the alloy rod moves one meter upwardly, the computer program controls the pair of shears 63 to be clamped from the first position to the second position, and returns the shears 63 to the first position after shearing off a half of the alloy rod in the casting, wherein the first position is open, the second position is 40% open (which is used for creating weak break points), and the third position is latched, i.e., the pair of shears shearing off the alloy rod, which specifically corresponds to the above first, second and third preset positions. Whenever the alloy rod moves eight meters upwardly, the computer program controls the pair of shears 63 to be clamped from the first position to the third position, returns the shears 63 to the first position after shearing off the alloy rod in the casting, and continues to draw the alloy rod below the shears 63 upwardly using a clamping fixture. In the above embodiment, the computer program controls the pair of shears 63 to move from the first position to the third position to shear off lengths of the alloy rod, for example, when it needs to cast an eight-meter long alloy rod, it requires the shears 63 to shear off the alloy rod every eight meters, or when it needs to cast a twelve-meter long alloy rod, it requires the shears 63 to shear off the alloy rod every twelve meters. For an alloy rod which is longer than one meter and is produced by the shears 63 using the above tools and the computer program control, and having one weak break point 101 every one meter, which may be convenient for the user of the alloy rod to easily break off the alloy rod at the weak break point 101 when processing, and easily form the alloy rod in one meter, two meters, three meters or other length when using the alloy rod for processing. Accordingly, the pair of shears creates weak break points or shears off the alloy rod according to a cold-drawn length of the alloy rod. The length of the alloy rod and a length of the weak break point are controlled by the computer program control in the production.

[0147] In the above multiple embodiments, it provides capability of cast the alloy rod or slab with different lengths in an adjustable continuous casting way, and may reduce the needs of stopping production procedure due to producing different products. Meanwhile, it also provides capability of producing products similar to the alloy ingot (which only requires modifying a configuration ratio of recipe before the furnace), i.e., it can produce desired products providing for different industries, increase flexibility of the production line, and whole competitiveness of the production enterprise. The alloy rod products are mainly used in construction or structure industry, such as, door and window frames, decoration structure and the like, and the alloy ingot products are mainly used in industrial product processing, such as, auto parts and the like.

[0148] In conclusion, in the present invention, by configuring the pulling rod ingot device of the cold-drawn processing apparatus to include a pulling rod bar and a pulling rod ingot head removably mounted below the pulling rod bar; when, at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head passing through a flow passage of the crystallizer to insert into a molten alloy of a holding furnace to tow the alloy part upwardly from the holding furnace; a positioning device of the tension leveler clamping an upper portion of the alloy part when the pulling rod ingot device has towed the alloy part upwardly to reach a first predetermined position; when the positioning device clamps the upper portion of the alloy part, an impact hammer impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head; and shears closing completely, and performing shearing operation on the alloy part, when the pulling rod ingot device has towed the alloy part upwardly to reach a second predetermined position, wherein the relative position of a height of the second predetermined position and of the shears corresponds to the length of the alloy part to be produced, the operators may rapidly produce the alloy parts with different lengths in the cold-drawn processing conveniently by adjusting the relative position of the height of the second predetermined position and of the shears. There is no need to stop production to adjust the length of the alloy part or transfer to produce the alloy slab, and saves processing time and energy source. Moreover, it may cast the alloy rod or slab with different lengths, and reduce the needs of stopping production procedure due to producing different products. It provides capability of producing products similar to the alloy ingot, increases flexibility of the production line, and whole competitiveness of the production enterprise.

[0149] Of course, the present invention may also have other multiple embodiments, and those skilled in the art may make various corresponding modifications and variations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding modifications and variations shall belong to the scope protected by the appended claims of the present invention.

Claims

1. A cold-drawn processing apparatus for processing a metal part, wherein the metal is a light metal or an alloy of light metal(s), comprising a raw material melting furnace, a holding furnace and at least one crystallizer, characterized in that the cold drawn processing apparatus further includes: at least one pulling rod ingot device including a pulling rod bar and a pulling rod ingot head removably mounted below the pulling rod bar; and when, at initial processing position of the cold-drawn processing apparatus, the pulling rod ingot head passing through a flow passage of the crystallizer to insert into a molten light metal or alloy of the holding furnace to tow the metal part upwardly from the holding furnace; at least one tension leveler including: a positioning device clamping an upper portion of the metal part when the pulling rod ingot device has towed the metal part upwardly to reach a first predetermined position; an impact hammer impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head when the positioning device clamps the upper portion of the metal part; and shears closing completely, and performing shearing operation on the metal part, when the pulling rod ingot device has towed the metal part upwardly to reach a second predetermined position; wherein the crystallizer also incorporates a mechanism for cooling of the metal part prior to its cold-drawing.

2. The cold-drawn processing apparatus according to claim 1, characterized in that the tension leveler further includes: at least two pairs of towing clips including an upper towing clip clamping the upper portion of the metal part when the positioning device clamps the upper portion of the metal part, and a lower towing clip clamping a lower portion of the metal part when the upper towing clip is continuously towing the metal part to reach the second predetermined position; and an impact hammer driver including springs and a driving motor pressing on the springs, the springs being connected to the impact hammer; the impact hammer driver pressing on the springs by rotation of the driving motor, and driving the impact hammer to impact the pulling rod ingot device.

3. The cold-drawn processing apparatus according to claim 1, characterized in that the shears close partially, and perform partial operation of the shears on the metal part, when the pulling rod ingot device has towed the metal part upwardly to reach a third predetermined position, and after the partial operation of the shears, the metal part gets weak break points at corresponding positions.

4. The cold-drawn processing apparatus according to claim 3, characterized in that a length of the sheared metal part is a first predetermined length; the third predetermined position includes a plurality of positions, the metal part has a plurality of weak break points, and the distance between two adjacent weak break points is a second predetermined length; the first predetermined length being greater than the second predetermined length.

5. The cold-drawn processing apparatus according to claim 3, characterized in that the shears open completely at the first predetermined position; and the shears close partially to have a 40% closure when the pulling rod ingot device has towed the metal part upwardly to reach a third predetermined position.

6. The cold-drawn processing apparatus according to claim 3, characterized in that the cold-drawn processing apparatus further includes: a controller for presetting the first, second and third predetermined positions, and controlling cold-drawn processing procedures of the cold-drawn processing apparatus.

7. The cold-drawn processing apparatus according to claim 1, characterized in that the crystallizer includes: an inner sleeve provided with the flow passage; an outer sleeve provided outside the inner sleeve, with a space being formed between the inner and outer sleeves, and a cooling liquid flowing in the space.

8. The cold-drawn processing apparatus according to claim 7, characterized in that the flow passage has a circular or rectangular cross-section; the inner sleeve and/or outer sleeve is made from graphite material; and the cooling liquid is water or engine oil.

9. The cold-drawn processing apparatus according to claim 1, characterized in that the pulling rod ingot head includes an upper end and a lower end, the upper end of the pulling rod ingot head having a larger cross-sectional area than that of the lower end; the upper end of the pulling rod ingot head is provided with a recess adaptive to a bottom of the pulling rod bar, and having a circular or rectangular cross-section.

10. The cold-drawn processing apparatus according to claim 2, characterized in that the tension leveler further includes: a crystallizer fixing device for fixing at least one crystallizer, and controlling rise, fall and displacement of the crystallizer; a fixed column for fixing the positioning device, the shears, the impact hammer, the towing clips and the impact hammer driver; and mounting centers of the positioning device, the shears, and the towing clips being located on the same axis.

11. The cold-drawn processing apparatus according to claim 1, characterized in that the raw material melting furnace and the holding furnace communicate with each other; and the metal part is an alloy rod or an alloy ingot.

12. The cold-drawn processing apparatus according to claim 11, characterized in that the alloy rod is an aluminum alloy rod; and the alloy ingot is an aluminum alloy ingot.

13. A method of processing a metal part, wherein the metal is a light metal or an alloy of light metal(s), using the cold-drawn processing apparatus of claim 1, the cold drawn processing apparatus comprising a raw material melting furnace, a holding furnace and at least one crystallizer, characterized in that the method includes:

A. when at least one pulling rod ingot device is at initial processing position of the cold-drawn processing apparatus, a pulling rod ingot head of the pulling rod ingot device passing through a flow passage of the crystallizer to insert into a molten light metal or alloy of the holding furnace to tow the metal part upwardly from the holding furnace; B. when the pulling rod ingot device tows the metal part upwardly to reach a first predetermined position, a positioning device of at least one tension leveler clamping an upper portion of the metal part; C. when the positioning device clamps the upper portion of the metal part, an impact hammer of the tension leveler impacting the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head; and D. when the pulling rod ingot device has towed the metal part upwardly to reach a second predetermined position, shears of the tension leveler closing completely, and performing shearing operation on the metal part; wherein the metal part undergoes a cooling stage (prior to cold-drawing) while within the crystallizer.

14. The method according to claim 13, characterized in that the tension leveler further includes at least two pairs of towing clips including an upper towing clip and a lower towing clip; the step B further including: when the positioning device clamps the upper portion of the metal part, the upper towing clip clamping the upper portion of the metal part, and, when the upper towing clip is continuously towing the metal part to reach the second predetermined position, the lower towing clip clamping a lower portion of the metal part; and, prior to the step D, the method further including: E. the shears close partially, and perform partial operation of the shears on the metal part when the pulling rod ingot device has towed the metal part upwardly to reach a third predetermined position, and after the partial operation of the shears, the metal part gets weak break points at corresponding positions.

15. The method according to claim 14, characterized in that in the step B, a length of the sheared metal part is a first predetermined length; in the step E, the third predetermined position includes a plurality of positions, the metal part has a plurality of weak break points, and the distance between two adjacent weak break points is a second predetermined length; and the first predetermined length is greater than the second predetermined length.

16. The method according to claim 14, characterized in that the shears open completely at the first predetermined position; and the shears close partially to have a 40% closure when the pulling rod ingot device has towed the metal part upwardly to reach a third predetermined position.

17. The method according to claim 13, characterized in that the cold-drawn processing apparatus further includes an impact hammer driver including springs and a driving motor pressing on the springs, the springs being connected to the impact hammer; in the step D, the impact hammer driver pressing on the springs by rotation of the driving motor, and driving the impact hammer to impact the pulling rod ingot device till the pulling rod bar is separated from the pulling rod ingot head.

18. The method according to claim 13, characterized in that that the cold-drawn processing apparatus further includes a controller; the method further including: presetting, by the controller, the first, second and third predetermined positions.

19. The method according to claim 13, characterized in that the crystallizer includes: an inner sleeve provided with the flow passage; an outer sleeve provided outside the inner sleeve, with a space being formed between the inner and outer sleeves, and a cooling liquid flowing in the space.

20. The method according to claim 19, characterized in that the flow passage has a circular or rectangular cross-section; the inner sleeve and/or outer sleeve is made from graphite material; and the cooling liquid is water or engine oil.

21. The method according to claim 13, characterized in that the pulling rod ingot head includes an upper end and a lower end, the upper end of the pulling rod ingot head having a larger cross-sectional area than that of the lower end; and the upper end of the pulling rod ingot head is provided with a recess adaptive to a bottom of the pulling rod bar, and having a circular or rectangular cross-section.

22. The method according to claim 14, characterized in that the tension leveler further includes: a fixed column for fixing the positioning device, the shears, the impact hammer, the towing clips and the impact hammer driver; mounting centers of the positioning device, the shears, and the towing clips located on the same axis; and a crystallizer fixing device; and, prior to the step A, the method including: G. the crystallizer fixing device fixing at least one crystallizer, and placing the crystallizer at a predetermined height above the molten light metal or alloy of the holding furnace; or placing the crystallizer beside the holding furnace when cold-drawn processing is not taking place.

23. The method according to claim 13, characterized in that the raw material melting furnace and the holding furnace communicate with each other; and the metal part is an alloy rod or an alloy ingot.

24. The method according to claim 23, characterized in that the alloy rod is an aluminum alloy rod; and the alloy ingot is an aluminum alloy ingot.