CN104191164A - Machining method of metallurgical furnace launder - Google Patents
Machining method of metallurgical furnace launder Download PDFInfo
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- CN104191164A CN104191164A CN201410372988.4A CN201410372988A CN104191164A CN 104191164 A CN104191164 A CN 104191164A CN 201410372988 A CN201410372988 A CN 201410372988A CN 104191164 A CN104191164 A CN 104191164A
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- metallurgical furnace
- finished product
- chute
- launder
- furnace chute
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
Provided is a machining method of a metallurgical furnace launder. A mode that plate blank forging and machining are combined is used for machining. The method comprises the following steps that forged plate blanks are forged and pressed into a metallurgical furnace launder semi-finished product with an arc face; and a metallurgical furnace launder component semi-finished product is subjected to finish machining to form a metallurgical furnace launder finished product. The machined metallurgical furnace launder finished product comprises a launder body. The launder is formed in the top of the launder body. A plurality of cooling water channels are arranged in the launder body. The cooling water channels are communicated with each other in an end-to-tail mode. At least one water inlet and one water outlet are formed. A forming technology is changed into the mode that forging, pressing and machining are combined, so that body materials are compact, grain refining is achieved, mechanical property is good, heat conductivity is high, composite holes are used as the cooling water channels, the cooling performance of the cooling water channels is further improved, the improvements are combined so that the thickness of the launder body can be greatly reduced, a producer can know that the launder with good performance can be obtained with low cost increased, frequent maintaining or replacing is of no need, influence on normal production can be greatly reduced, and production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of processing method of metallurgical furnace chute.
Background technology
At present, the chute that conventional metallurgical furnace is used, is used to the material (as molten iron or pulp water) under transporting molten state, and complete chute is to be generally formed by connecting by one section or several sections of chutes, and between section and section, normal employing flange adds the modes such as bolt and connects.Chute bulk material adopts red copper or alloyed copper conventionally, and traditional handicraft is pre-buried cooling copper tube, then allows copper pipe and molten copper liquid is integrated poured forms, and after moulding, flow channel cross-section shape has " U " shape etc.
The shortcoming of above-mentioned this conventional cast technique is as follows:
1) body casting moulding, easily produces sand holes, shrink defects, pore, needle pore defect and crackle tendency.This is that process of setting body shrinkage factor can reach 4.5%, easily forms concentrating shrinkage cavity because cast body contraction is very large, and it is easily air-breathing in red copper casting process, in casting, forming pore and needle pore defect, is that hydrogen-oxygen is dissolved in solution, the cause that the steam that while solidifying, compressed reaction generates forms.
2) red copper or the alloyed copper body intensity of casting are low, and the surface quality after moulding is comparatively coarse, increase the resistance of the Flow of Goods and Materials under molten condition, increase unnecessary loss.As casting surface carried out to fine finishining, easily expose the cast inside defects such as pore, crackle, and improve in a large number manufacturing cost.
3) body pipe laying casting, has larger air gap thermal resistance between pre-buried copper pipe and body, this is that in the working environment of high temperature, air gap thermal resistance has weakened exchange capability of heat greatly because be difficult to reach metallurgical binding between body and water pipe.
4) due to the constraint of the techniques such as the external diameter size of pre-buried copper pipe, bending least radius, the thickness of pipe laying casting body is thicker, causes the design weight of whole chute larger.
Applicant finds that the problem of above-mentioned traditional chute is not only the material and the manufacture method that adopt, and its structure is also very unreasonable, therefore cause poor, the easy damage of its exchange capability of heat, life-span shorter, need often to chute, repair or replace, thereby affect the normal production of metallurgical furnace.
Summary of the invention
Technical problem to be solved by this invention is for the above-mentioned shortcoming of prior art, a kind of processing method of metallurgical furnace chute is provided, the processing method of this metallurgical furnace chute can avoid occurring casting flaw, and the metallurgical furnace chute cooling capacity processing is better, longer service life.The technical scheme adopting is as follows:
A processing method for metallurgical furnace chute, is characterized in that: the mode that adopts forging slab and machined to combine is processed, and comprises the following steps:
A, block is forged into the metallurgical furnace chute semi-finished product with cambered surface;
B, metallurgical furnace chute assembly semi-finished product are finish-machined to metallurgical furnace chute finished product.
Scheme preferably, the material of described block is red copper or copper alloy.
Scheme preferably, described forging and stamping be by block by hydraulic press forging forming, the thickness of block is at least 2 times of finished product thickness after forging and stamping; Metallurgical furnace chute semi-finished product cell conductance δ >=98%IACS that described employing forging method is made, corresponding thermal conductivity: λ >=381W/ (mK), inner crystal grain is fine and close.
Scheme preferably, described fine finishining step comprises:
B1, use special gun drilling lathe hole (being processed into cooling water channel pass) on the metallurgical furnace chute semi-finished product that forged;
B2, preliminary cambered surface and other each surfaces of forming of forging on metallurgical furnace chute semi-finished product processed.The method of described processing comprises and adopts numerical control machining center, digital-control boring-milling machine respectively metallurgical furnace chute semi-finished product to be processed.Until processed metallurgical furnace chute semi-finished product meet the requirements such as the plane of finished product chute and cambered surface dimensional accuracy and surface quality, obtain metallurgical furnace chute finished product.
The metallurgical furnace chute finished product that adopts the processing method of above-mentioned metallurgical furnace chute to process, comprise chute body, described chute bodies top has chute, in described chute body, have many cooling-water ducts, the head and the tail of each cooling-water duct connect, form water cooling system mutually, and this water cooling system at least arranges 1 water inlet and 1 delivery port.
Scheme preferably, described cooling-water duct cross section is composite holes, described composite holes is partly overlapped and is formed by least two circular ports.The diameter of each circular port can be the same or different.
Due to the manufacturing cost ratio forging of pipe laying casting, the low cost of manufacture of machined combination, the most of technique that adopts pipe laying casting of traditional chute.But the present invention adopts the chute of composite holes, meeting under the condition of instructions for use, can effectively reduce the design thickness of body, thereby weight reduction, save purchase cost, and adopt the manufacturing process of forging and machined combination, do not have casting flaw, cooling effect is more remarkable, longer service life.
The present invention's beneficial effect is against existing technologies:
1) by conventional cast moulding process, change forging and stamping and the mode that combines of machined into, make body dense materials, grain refinement, good mechanical property, thermal conductivity is large.The chute body of conventional cast, its electrical conductivity is about 88%IACS, thermal conductivity is about 320W/ (mK), but the casting flaw due to pore, crackle, and between pre-buried copper pipe and body, air gap exists, the chute body interior heat conductivility of conventional cast is uneven, does not in fact reach the heat-conducting effect of expection.And the chute body that forging and stamping and machined combine, inner crystal grain densification and overall performance are even, and performance reaches electrical conductivity δ >=98%IACS, corresponding thermal conductivity: λ >=381W/ (mK).
2) due to the raising of thermal conductivity, under meeting the instructions for use of taking away identical heat in the unit interval, the chute body that adopts forging and stamping and machined to combine will be saved a large amount of cooling waters than the chute body of conventional cast, and the hydraulic pressure of cooling water, water speed also can reduce, this input that is equivalent to supporting supply equipment can be saved.After long-time use, this effect Neng Wei enterprise saves great amount of cost.
3) adopt composite holes further to improve the cooling performance of cooling-water duct as cooling-water duct, under the suitable condition of cooling-water duct sectional area, the heat exchange area of composite holes is larger than circular hole, and body thickness can design thinlyyer, weight reduction.
4) cooling-water duct is to adopt machined boring to form, there is not the technique restrictions such as pipe laying external diameter size, the elbow radius of conventional cast technique be big or small, make body dimension can do thinlyyer, further reduce body design weight, and internal water channel can be arranged more evenly intensively, is conducive to take away sooner heat.
Above-mentioned improvement combines, the thickness of chute body can significantly be reduced, and internal cooling aquaporin can be arranged more rationally intensively, both effectively reduced the manufacturing cost of metallurgical furnace chute finished product, allow the producer only need to increase less cost just can be acquired can better chute, and this chute result of use is better, life-span significantly increases, make the producer without safeguarding frequently or changing, the impact of normal production is greatly reduced, and production efficiency significantly improves.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1 metallurgical furnace chute;
Fig. 2 is the working state schematic representation of 1 forging press that adopts of forging and stamping step embodiment illustrated in fig. 1;
Fig. 3 is the contrast table that cooling water channel of the present invention adopts different hole shapes;
Fig. 4 is the contrast table of the present invention and prior art manufacture method.
The specific embodiment
Embodiment 1
The processing method of the metallurgical furnace chute of the present embodiment, the mode that adopts forging slab and machined to combine is processed, and comprises the following steps:
A, block is forged into the metallurgical furnace chute semi-finished product with cambered surface;
B, metallurgical furnace chute assembly semi-finished product are finish-machined to metallurgical furnace chute finished product.
The material of described block is red copper or alloyed copper.
As shown in Figure 2, described forging and stamping are by described block, and by hydraulic press forging forming, the thickness of block is 2 times of finished product thickness after forging and stamping; Metallurgical furnace chute semi-finished product cell conductance δ >=98%IACS that described employing forging method is made, corresponding thermal conductivity: λ >=381W/ (mK).
Described fine finishining step comprises:
B1, use special gun drilling lathe hole (being processed into cooling water channel pass) on the metallurgical furnace chute semi-finished product that forged.The straight line deviation at center, hole can reach in 1mm/m.
B2, preliminary cambered surface and other each surfaces of forming of forging on metallurgical furnace chute semi-finished product processed.The method of described processing comprises and adopts numerical control machining center, digital-control boring-milling machine respectively metallurgical furnace chute semi-finished product to be processed.Until processed metallurgical furnace chute semi-finished product meet the requirements such as the plane of finished product chute and cambered surface dimensional accuracy and surface quality, obtain metallurgical furnace chute finished product.
As shown in Figure 1, described metallurgical furnace chute finished product comprises chute body 1, described chute body 1 top has chute 3, in described chute body 1, have many cooling-water ducts 2, the head and the tail of each cooling-water duct connect, form water cooling system mutually, and this water cooling system arranges 1 water inlet and 1 delivery port.
Described cooling-water duct 2 is single round hole.
Embodiment 2
Metallurgical furnace chute finished product in the present embodiment and the difference of embodiment 1 are:
Described cooling-water duct 2 is composite holes, and described composite holes is partly overlapped and formed by two circular ports.The diameter of each circular port is identical, and the heat exchange area of cooling-water duct (girth in cross section) increases approximately 14.71%.
Embodiment 3
Metallurgical furnace chute finished product in the present embodiment and the difference of embodiment 1 are:
Described cooling-water duct 2 is composite holes, and described composite holes is partly overlapped and formed by three circular ports.The diameter of each circular port is all different, and the heat exchange area of cooling-water duct (girth in cross section) increases approximately 17.23%.
The metallurgical furnace chute finished product of a segment length 2m, spreading width 1.5m of take is example, conventional cast technique is for meeting performance requirement and life requirements, conventionally design thickness is more than 160mm, forge the chute body that slab and machined combine, design thickness 120mm above (comprising 120mm) can meet the demands.And adopt the slab in above-mentioned composite holes (three holes), and guaranteeing under the condition that cooling duct wall thickness is identical, for example, from a circular hole (Φ 55), become three circular holes stacks (for example Φ 35), slab thickness can reduce 20mm again.In conjunction with above, describe, gross weight reduces approximately 39%, greatly reduces purchase cost.
In sum, under identical outside pressure of supply water condition, cooling effect is to be determined by principal elements such as the water speed of cooling duct, the heat exchange area of cooling duct, the coefficients of heat transfer of body.Therefore, guaranteeing that under the prerequisite of identical cooling duct sectional area, the water speed of cooling duct is the same, and the heat exchange area (being girth * unit length) of composite holes (take three holes as example) increases approximately 17%, greatly improves heat transfer effect.
The Copper Groove of casting is the technique that adopts pipe laying casting, and this just means between water pipe and body and inevitably exist gap to form thermal resistance, thereby affects cooling effect, and bore process does not exist gap completely.
In the present invention because replace pipe laying casting technique by the technique of slab forging and stamping, eliminated the defect that casting technique produces, adopt the conductance δ >=98%IACS forging, corresponding thermal conductivity: λ >=381W/ (mK), and the conductance δ >=88%IACS of casting, corresponding thermal conductivity λ >=320W/ (mK), so body exchange capability of heat is stronger than what cast.And used the cooling water channel 2 of composite holes, the wetted perimeter of cooling water channel 2, than the length of single round hole, is more conducive to conduct heat, so chute can reduce wall thickness, reduces cost, increases the service life.
In addition; it should be noted that, the specific embodiment described in this description, its each several part titles etc. can be different; all equivalence or simple change of doing according to described structure, feature and the principle of patent design of the present invention, are included in the protection domain of patent of the present invention.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (7)
1. a processing method for metallurgical furnace chute, is characterized in that: adopt and forge the mode that slab and machined combine and process, comprise the following steps:
A, block is forged into the metallurgical furnace chute semi-finished product with cambered surface;
B, metallurgical furnace chute assembly semi-finished product are finish-machined to metallurgical furnace chute finished product.
2. the processing method of metallurgical furnace chute as claimed in claim 1, is characterized in that: the material of described block is red copper or copper alloy.
3. the processing method of metallurgical furnace chute as claimed in claim 1, is characterized in that: described forging and stamping be by block by hydraulic press forging forming, the thickness of block is at least 2 times of finished product thickness after forging and stamping; Metallurgical furnace chute semi-finished product conductance δ >=98%IACS that described employing forging method is made, corresponding thermal conductivity: λ >=381W/ (mK).
4. the processing method of metallurgical furnace chute as claimed in claim 1, is characterized in that: described fine finishining step comprises:
B1, use special gun drilling lathe to hole on the metallurgical furnace chute semi-finished product that forged;
B2, preliminary cambered surface and other each surfaces of forming of forging on metallurgical furnace chute semi-finished product processed.
5. the processing method of metallurgical furnace chute as claimed in claim 4, is characterized in that: the method for processing in described b2 step comprises and adopts numerical control machining center, digital-control boring-milling machine respectively metallurgical furnace chute semi-finished product to be processed.
6. adopt the metallurgical furnace chute finished product that the processing method of metallurgical furnace chute processes as described in any one in claim 1-4, it is characterized in that: comprise chute body, described chute bodies top has chute, described chute body interior has many cooling-water ducts, the head and the tail of each cooling-water duct connect, form water cooling system mutually, and this water cooling system at least arranges 1 water inlet and 1 delivery port.
7. metallurgical furnace chute finished product as claimed in claim 6, is characterized in that: described cooling-water duct is composite holes, and described composite holes is partly overlapped and formed by least two circular ports, and the diameter in each hole can be the same or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410372988.4A CN104191164A (en) | 2014-08-01 | 2014-08-01 | Machining method of metallurgical furnace launder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410372988.4A CN104191164A (en) | 2014-08-01 | 2014-08-01 | Machining method of metallurgical furnace launder |
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| CN104191164A true CN104191164A (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410372988.4A Pending CN104191164A (en) | 2014-08-01 | 2014-08-01 | Machining method of metallurgical furnace launder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054704A (en) * | 2017-12-22 | 2018-05-18 | 江苏华强电气设备有限公司 | A kind of copper pipe isolated bus connecting clip and its production technology |
| CN109676816A (en) * | 2019-01-11 | 2019-04-26 | 东莞鸿祥机械有限公司 | Mixer heating and cooling dual-purpose type mixing slot and its processing method |
| CN110900127A (en) * | 2019-11-28 | 2020-03-24 | 汕头华兴冶金设备股份有限公司 | Manufacturing method of blast furnace tuyere sleeve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2907511A1 (en) * | 1979-02-26 | 1980-09-11 | Gutehoffnungshuette Sterkrade | COOLING PLATE FOR SHAFT OVENS AND METHOD FOR THE PRODUCTION THEREOF |
| DE19801425A1 (en) * | 1998-01-16 | 1999-07-22 | Schloemann Siemag Ag | Cooling plate for shaft furnaces |
| CN2521222Y (en) * | 2002-02-04 | 2002-11-20 | 佘克事 | Copper plate composite hole type cooling wall |
| US20040035510A1 (en) * | 2000-05-19 | 2004-02-26 | Wolfgang Hornschemeyer | Cooling plate and method for manufacturing a cooling plate |
| CN2654614Y (en) * | 2003-08-19 | 2004-11-10 | 佘京鹏 | Copper cooling wall with composite holes formed by different rounds |
| CN201311191Y (en) * | 2008-12-11 | 2009-09-16 | 绍兴曙光机械有限公司 | Cooper chute |
| CN202485457U (en) * | 2011-11-08 | 2012-10-10 | 阳谷祥光铜业有限公司 | Metallurgical slag continuous discharge system |
-
2014
- 2014-08-01 CN CN201410372988.4A patent/CN104191164A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2907511A1 (en) * | 1979-02-26 | 1980-09-11 | Gutehoffnungshuette Sterkrade | COOLING PLATE FOR SHAFT OVENS AND METHOD FOR THE PRODUCTION THEREOF |
| DE19801425A1 (en) * | 1998-01-16 | 1999-07-22 | Schloemann Siemag Ag | Cooling plate for shaft furnaces |
| US20040035510A1 (en) * | 2000-05-19 | 2004-02-26 | Wolfgang Hornschemeyer | Cooling plate and method for manufacturing a cooling plate |
| CN2521222Y (en) * | 2002-02-04 | 2002-11-20 | 佘克事 | Copper plate composite hole type cooling wall |
| CN2654614Y (en) * | 2003-08-19 | 2004-11-10 | 佘京鹏 | Copper cooling wall with composite holes formed by different rounds |
| CN201311191Y (en) * | 2008-12-11 | 2009-09-16 | 绍兴曙光机械有限公司 | Cooper chute |
| CN202485457U (en) * | 2011-11-08 | 2012-10-10 | 阳谷祥光铜业有限公司 | Metallurgical slag continuous discharge system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054704A (en) * | 2017-12-22 | 2018-05-18 | 江苏华强电气设备有限公司 | A kind of copper pipe isolated bus connecting clip and its production technology |
| CN109676816A (en) * | 2019-01-11 | 2019-04-26 | 东莞鸿祥机械有限公司 | Mixer heating and cooling dual-purpose type mixing slot and its processing method |
| CN110900127A (en) * | 2019-11-28 | 2020-03-24 | 汕头华兴冶金设备股份有限公司 | Manufacturing method of blast furnace tuyere sleeve |
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Application publication date: 20141210 |