CN117505560A - Multimode variable frequency wire drawing device and method for thick tungsten wire drawing - Google Patents
Multimode variable frequency wire drawing device and method for thick tungsten wire drawing Download PDFInfo
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- CN117505560A CN117505560A CN202311283531.1A CN202311283531A CN117505560A CN 117505560 A CN117505560 A CN 117505560A CN 202311283531 A CN202311283531 A CN 202311283531A CN 117505560 A CN117505560 A CN 117505560A
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- 238000005491 wire drawing Methods 0.000 title claims abstract description 497
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 238000005461 lubrication Methods 0.000 claims abstract description 34
- 239000000839 emulsion Substances 0.000 claims abstract description 33
- 239000007921 spray Substances 0.000 claims abstract description 28
- 230000001050 lubricating effect Effects 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 description 18
- 239000010937 tungsten Substances 0.000 description 18
- 229910001080 W alloy Inorganic materials 0.000 description 15
- 230000008569 process Effects 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/04—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/12—Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/14—Drums, e.g. capstans; Connection of grippers thereto; Grippers specially adapted for drawing machines or apparatus of the drum type; Couplings specially adapted for these drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The application provides a multi-die variable frequency wire drawing device and method for thick tungsten wire drawing. In the device, the main wire drawing disc group and the auxiliary wire drawing disc group respectively comprise n wire drawing discs which are arranged in parallel along a first direction, and a wire drawing die frame, a heating fire groove and a die lubrication groove are sequentially arranged between the main wire drawing disc group and the auxiliary wire drawing disc group along a second direction. N+1 wire drawing dies are arranged in n+1 die mounting grooves on the wire drawing die frame, and the aperture of wire drawing holes of the n+1 wire drawing dies is gradually reduced; and n+1 wire drawing moulds are respectively collinear with n+1 heating fire grooves and n+1 lubrication emulsion spray holes, n wire drawing discs on the main wire drawing disc group are correspondingly provided with n wire drawing wheel heating fire heads, n+1 wire drawing moulds are correspondingly provided with n+1 mould heating fire heads, the main wire drawing disc group is also provided with a wire drawing take-up disc, and the wire drawing take-up disc is collinear with the 1 st wire drawing mould along the first direction in the second direction.
Description
Technical Field
The application relates to the technical field of wire drawing equipment, in particular to a multi-die variable frequency wire drawing device and method for thick tungsten wire drawing.
Background
Along with the rapid development of the photovoltaic field, the demand of the silicon wafer is rapidly increased, and at present, carbon steel cutting wires are mostly adopted for cutting the silicon wafer, so that the double carbon requirement is met, the silicon wafer utilization rate is improved, the thickness and the utilization rate of the silicon wafer are higher, the silicon wafer is required to be thinner, the silicon wafer cut by a single silicon ingot is more, and further, the requirements of finer wire diameter and higher strength are provided for the cutting wires.
The tungsten alloy wire has the characteristics of high strength (wire diameter is 0.035mm, breaking force of the tungsten alloy wire is more than or equal to 5.0N), good plastic deformation capability (the tungsten alloy wire can be processed to 0.020-0.030 mm) and the like, and is an ideal material for basically replacing carbon steel cutting wires; however, for cutting wires, not only high strength index is required, but also the length of the monofilament is ensured to be not less than 5 ten thousand meters; the index of the silicon wafer cutting wire puts higher requirements on tungsten alloy wire blanks.
At present, the processing efficiency is low in the processing process of the tungsten alloy thick wire, the frequent wire threading has serious influence on the performance index and consistency of the tungsten wire, the wire breakage probability of the subsequent processing is increased, the high-strength tungsten alloy wire with a certain length and stable performance cannot be obtained, and the application of the tungsten alloy wire in the silicon wafer cutting fields such as photovoltaics, semiconductors and the like is seriously influenced. The stability and efficiency of the thick wire processing process of the tungsten alloy wire are improved, and the wire breakage probability in the subsequent processing process is reduced, so that the problem to be solved in the processing of the high-strength tungsten alloy wire is urgently solved.
Disclosure of Invention
The invention aims to provide a multi-die variable frequency wire drawing device and method for thick tungsten wire drawing, which are used for solving or relieving the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a thick tungsten wire drawing is with multimode utensil variable frequency wire drawing device, include: the wire drawing platform, the main wire drawing disc group, the auxiliary wire drawing disc group, the die lubrication groove, the heating fire groove, the wire drawing die rack, the wire drawing wheel heating fire head and the die heating fire head; the main wire drawing disc group, the auxiliary wire drawing disc group, the die lubrication groove, the heating fire groove and the wire drawing die rack are all positioned on the wire drawing platform; the main wire drawing disc group and the auxiliary wire drawing disc group respectively comprise n wire drawing discs which are arranged in parallel along a first direction, and the main wire drawing disc group and the auxiliary wire drawing disc group are respectively positioned at two ends of the wire drawing platform; the wire drawing die rack, the heating fire groove and the die lubrication groove are sequentially arranged between the main wire drawing disc group and the auxiliary wire drawing disc group along a second direction; wherein n is a positive integer, and n is more than or equal to 2; the first direction is the axial direction of the main wire drawing disc group; the second direction is the direction from the main wire drawing disc group to the auxiliary wire drawing disc group;
n+1 die mounting grooves are formed in the wire drawing die frame along the first direction, n+1 wire drawing dies are respectively arranged in the n+1 die mounting grooves, and n+1 wire drawing dies are respectively collinear with n+1 heating fire grooves and n+1 lubricating emulsion spray holes in the die lubricating grooves in the second direction; the diameter of the wire drawing holes of the n+1 wire drawing dies is gradually reduced along the first direction; the axes of the wire drawing holes on the rear n wire drawing dies along the first direction are tangent to the upper surfaces of the n wire drawing discs on the main wire drawing disc group respectively; the axes of the first n lubricating emulsion spray holes along the first direction are tangential to the upper surfaces of the n wire drawing disks on the auxiliary wire drawing disk group respectively;
the number of the wire drawing wheel heating fire heads is n, and the wire drawing wheel heating fire heads are opposite to the number of the wire drawing discs on the main wire drawing disc group; the number of the die heating fire heads is n+1, and the n+1 die heating fire heads are positioned right above the wire drawing die and are opposite to the n+1 wire drawing die;
the main wire drawing disc group is driven by a first variable frequency motor, one end far away from the first variable frequency motor is further provided with a wire drawing and winding disc, and the wire drawing and winding disc and the 1 st wire drawing die along the first direction are collinear in the second direction.
Preferably, the diameter of the wire drawing disc on the main wire drawing disc group is more than or equal to 360mm; the diameter of the wire drawing disc on the auxiliary wire drawing disc group is more than or equal to 360mm; the diameter of the wire drawing disc of the wire drawing and winding disc is larger than or equal to 380mm; and/or, the surfaces of the wire drawing disc and the wire drawing disc are sprayed with a temperature-resistant coating with the temperature resistance not lower than 1000 ℃.
Preferably, the n wire drawing discs are of split detachable structures or integrated structures.
Preferably, the linear speed of the main wire drawing disc group is higher than that of the auxiliary wire drawing disc group, and is 50% higher than the wire drawing reduction rate; wherein, according to the formula:
determining the wiredrawing reduction rate eta; wherein d 0 The wire inlet sectional area of the tungsten wire to be drawn in the wire drawing die is; d, d 1 The wire-outgoing sectional area of the tungsten wire to be drawn in the wire-drawing die is the wire-outgoing sectional area of the tungsten wire to be drawn in the wire-drawing die.
Preferably, the main wire drawing disc group is connected with the output end of the first variable frequency motor through a main wire drawing shaft, and the auxiliary wire drawing shaft of the auxiliary wire drawing disc group is connected with the main wire drawing shaft through chain transmission; or the auxiliary wire drawing disc group is driven by a second variable frequency motor.
Preferably, the multi-die variable frequency wire drawing device further comprises: and a wire paying-off frame is arranged between the wire paying-off frame and the die lubrication groove, wherein n+1 wire guiding wheels are arranged, and the upper surfaces of the n+1 wire guiding grooves of the wire guiding wheels are tangent to the axes of n+1 lubrication emulsion spray holes in the second direction.
The embodiment of the application also provides a multi-die variable frequency wire drawing method for drawing the thick tungsten wire, which adopts any one of the multi-die variable frequency wire drawing devices for drawing the thick tungsten wire, and the wire drawing method comprises the following steps: starting a wire drawing wheel heating fire head to heat n wire drawing discs which are arranged in parallel along a first direction on a main wire drawing disc group;
placing a wire drawing die with the largest wire drawing hole diameter in a 1 st die mounting groove arranged on a wire drawing die frame along a first direction, and starting a die heating fire head to heat the wire drawing die with the largest wire drawing hole diameter;
reducing the diameter of a tungsten wire to be drawn through a wire melting groove, passing through a 1 st lubricating emulsion spray hole arranged on a mold lubricating groove along a first direction, spraying lubricating emulsion, sequentially passing through a heating fire groove collinear with the 1 st lubricating emulsion spray hole along a second direction and a wire drawing mold with the largest aperture of the wire drawing hole, and clamping on a wire drawing take-up reel;
the wire drawing take-up reel is driven to rotate by a first variable frequency motor, after a tungsten wire is wound on a wire drawing disc of the wire drawing take-up reel for 2-4 circles, the tungsten wire is taken down from the wire drawing take-up reel and passes through an n+1th lubricating emulsion spray hole and an n+1th heating fire slot which are collinear along the second direction, and meanwhile, the corresponding wire drawing die is taken out from the 1 st die mounting slot and is placed in the n+1th die mounting slot;
the tungsten wire passing through the wire drawing die starts from the upper part of an nth wire drawing disc of the main wire drawing disc group, winds a plurality of circles on the nth wire drawing disc of the main wire drawing disc group, passes out from the lower part of the nth wire drawing disc of the auxiliary wire drawing disc group towards the lower part of the nth wire drawing disc of the main wire drawing disc group, winds a plurality of circles on the nth wire drawing disc of the auxiliary wire drawing disc group, and passes out from the upper part of the nth wire drawing disc of the auxiliary wire drawing disc group;
and sequentially repeating until the tungsten wire passes through all the wire drawing dies, and fixing the tungsten wire on the wire drawing and winding disc for wire drawing.
The beneficial effects are that:
in the multi-die variable frequency wire drawing device for rough tungsten wire drawing provided by the embodiment of the application, the main wire drawing disc group, the auxiliary wire drawing disc group, the die lubrication groove, the heating fire groove and the wire drawing die rack are all positioned on the wire drawing platform; the main wire drawing disc group and the auxiliary wire drawing disc group respectively comprise n wire drawing discs which are arranged in parallel along the first direction, and a wire drawing die frame, a heating fire groove and a die lubrication groove are sequentially arranged between the main wire drawing disc group and the auxiliary wire drawing disc group along the second direction. N+1 wire drawing dies are installed in n+1 die installation grooves on the wire drawing die frame, and the n+1 wire drawing dies are respectively collinear with n+1 heating fire grooves and n+1 lubricating emulsion spray holes. The diameter of the wire drawing holes of the n+1 wire drawing dies is gradually reduced along the first direction; the axes of the wire drawing holes on the rear n wire drawing dies along the first direction are tangent to the upper surfaces of the n wire drawing discs on the main wire drawing disc group respectively; the axes of the first n lubrication emulsion spray holes along the first direction are tangential to the upper surfaces of n wire drawing disks on the auxiliary wire drawing disk group respectively. The n wire drawing discs on the main wire drawing disc group are correspondingly provided with n wire drawing wheel heating fire heads, n+1 die heating fire heads are correspondingly arranged right above the n+1 wire drawing dies, the main wire drawing disc group is driven by a first variable frequency motor, one end far away from the first variable frequency motor is further provided with a wire drawing take-up disc, and the wire drawing take-up disc and the 1 st wire drawing die along the first direction are collinear in the second direction.
Therefore, during wire drawing, only the same position of the head of the tungsten wire is required to be corroded, reduced in diameter and clamped, so that material loss during wire threading and clamping is effectively reduced; the wire drawing uniformity is good, the surface reduction rate is stable, the simultaneous wire drawing of multiple passes can be realized, the production efficiency is effectively improved, the loss and the labor intensity are reduced, and the guarantee is provided for the subsequent processing of tungsten alloy wires.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:
fig. 1 is a schematic diagram of a multi-die variable frequency wire drawing device for drawing thick tungsten wires according to some embodiments of the present application;
fig. 2 is a schematic structural diagram of a multi-die variable frequency wire drawing device for drawing thick tungsten wires according to some embodiments of the present application;
FIG. 3 is a top view of the multi-die variable frequency wire drawing apparatus for rough tungsten wire drawing shown in FIG. 2;
fig. 4 is a schematic structural view of a drawing bench according to some embodiments of the present application;
fig. 5 is a schematic structural view of a primary drawing disk set according to some embodiments of the present application;
fig. 6 is a schematic structural view of an auxiliary wire drawing disc set provided according to some embodiments of the present application;
FIG. 7 is a schematic view of a wire drawing die installed in a die mounting groove provided in accordance with some embodiments of the present application;
fig. 8 is a schematic structural view of a wire drawing die provided in accordance with some embodiments of the present application;
FIG. 9 is a schematic structural view of a mold lubrication groove provided in accordance with some embodiments of the present application;
FIG. 10 is a schematic cross-sectional view of the mold lubrication groove shown in FIG. 9;
FIG. 11 is a schematic diagram of a wire guide wheel provided in accordance with some embodiments of the present application;
fig. 12 is a schematic flow chart of a multi-die variable frequency wire drawing method for drawing thick tungsten wires according to some embodiments of the present application.
Reference numerals illustrate:
1. a wire drawing platform; 2. a main wire drawing disc group; 3. an auxiliary wire drawing disc group; 4. a mold lubrication groove; 5. heating the fire tank; 6. a wire drawing die rack; 7. heating the fire head by a mould; 8. heating the fire head by the wire drawing wheel; 9. a pay-off rack; 10. a wire guide wheel;
201. a wire drawing disc; 202. a wire drawing disc connecting ring; 203. a wire drawing disc; 204. a wire winding column; 401. lubricating emulsion spray holes; 601. and (5) a wire drawing die.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Various examples are provided by way of explanation of the present application and not limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
At present, a single-die rotary table wire drawing process is mostly adopted for processing the thick tungsten alloy wires. However, the process can seriously affect the efficiency, consistency and performance of the thick wire processing of the tungsten alloy wire, and brings inconvenience to the subsequent processing and use of the high-strength tungsten alloy wire. The specific expression is as follows: (1) Because of single die drawing, threading is needed each time, the material loss in the threading process is increased (thick tungsten wires are needed to be corroded and reduced in a wire melting groove before threading each time); (2) In the wire drawing process, the wire drawing clamp is required to clamp the head tungsten wire. The part is stressed greatly and has clamping marks on the surface, so that the broken wire is serious in further processing, and the broken wire needs to be removed after the single wire drawing is finished, and the loss is increased; (3) The single-pass drawing requires frequent material and equipment replacement, and has high working strength, low efficiency and large fluctuation of technological parameters, so that the consistency of the processed tungsten wire is poor.
Based on the problems of low drawing efficiency, poor performance consistency, high labor intensity and the like of the single-pass rotary table of the conventional thick tungsten wire, the applicant provides a multi-die variable frequency wire drawing device for thick tungsten wire drawing, and provides a guarantee for preparing and processing high-strength and long-length tungsten alloy wires.
As shown in fig. 1 to 11, the multi-die variable frequency wire drawing device for thick tungsten wire drawing includes: the wire drawing platform 1, main wire drawing dish group 2, auxiliary wire drawing dish group 3, mould lubrication groove 4, heating fire groove 5, wire drawing mould frame 6, wire drawing wheel heating fire head 8, mould heating fire head 7. Wherein, main wire drawing dish group 2, auxiliary wire drawing dish group 3, mould lubrication groove 4, heating fire groove 5, wire drawing mould frame 6 all are located wire drawing platform 1.
First, for convenience of explanation, in the present application, the axial direction along the main drawing disc group 2 is defined as a first direction, that is, the width direction of the drawing bench 1, and is a positive direction of the first direction from inside to outside; the direction from the main wire drawing disc group 2 to the auxiliary wire drawing disc group 3 is defined as a second direction, namely the length direction of the wire drawing platform 1.
In this application, main wire drawing dish group 2 includes a plurality of n wire drawing dishes 201 that set up side by side along the first direction (n is positive integer, and n is not less than 2), is provided with wire drawing dish go-between 202 adjacent 2 wire drawing dishes 201, and n wire drawing dishes 201 are split type detachable construction, or, as an organic whole structure. Specifically, when n wire drawing discs 201 are of split detachable structure, two adjacent wire drawing discs 201 are connected together through studs, wire drawing disc connecting rings 202 are located between two adjacent wire drawing discs 201, and the studs penetrate through wire drawing disc connecting rings 202, wherein two ends of the studs are respectively in threaded connection with the two adjacent wire drawing discs 201. When the n drawing disks 201 are in an integral structure, the drawing disks 201 and the drawing disk connecting ring 202 are also in an integral structure.
The nth wire drawing disc 201 of the main wire drawing disc group 2 is also connected with a wire drawing disc, namely, the wire drawing disc 201 at the outermost side of the main wire drawing disc group 2 is connected with the wire drawing wire disc. Specifically, the wire drawing take-up reel includes a wire drawing disc 203 and a wire winding column 204, wherein the wire drawing disc 203 is detachably connected to the wire drawing disc 201, or is in an integral structure with the wire drawing disc 201. On the outer end surface of the wire drawing disc 203, a plurality of cylindrical wire winding posts 204 are uniformly distributed along the circumferential direction, wherein the end parts of the wire winding posts 204 are in threaded connection with the outer end surface of the wire drawing disc 203.
In this application, the auxiliary wire drawing disc group 3 also includes n wire drawing discs that set up side by side along the first direction, wherein, the nth wire drawing disc on the auxiliary wire drawing disc group 3 is relative with the (n-1) th wire drawing disc 201 on the main wire drawing disc group 2, and the 1 st wire drawing disc on the auxiliary wire drawing disc group 3 is relative with the wire drawing disc 203 on the main wire drawing disc group 2.
The main wire drawing disc group 2 and the auxiliary wire drawing disc group 3 are respectively positioned at two ends of the wire drawing platform 1, and the main wire drawing disc 203 is connected with the output end of the first variable frequency motor through a main wire drawing shaft and drives the main wire drawing disc group 2 to rotate under the drive of the first variable frequency motor; the auxiliary wire drawing shaft and the main wire drawing shaft of the auxiliary wire drawing disc group 3 are connected through chain transmission and driven to rotate by a first variable frequency motor; or, the auxiliary wire drawing disc group 3 is driven by a second variable frequency motor.
Wherein, the linear velocity of the main wire drawing disc group 2 is higher than the linear velocity of the auxiliary wire drawing disc group 3, and is 50% higher than the wire drawing reduction rate. Specifically, when the main wire drawing disc group 2 and the auxiliary wire drawing disc group 3 are driven by a chain, the diameters of the main sprocket and the auxiliary sprocket in the chain driving are calculated according to the linear speeds of the main wire drawing disc group 2 and the auxiliary wire drawing disc group 3 which are determined in advance. Here, the formula is as follows:
and determining the wiredrawing surface reduction rate eta. Wherein d 0 The wire-incoming sectional area of the tungsten wire to be drawn in the wire-drawing die 601; d, d 1 Is the outgoing cross-sectional area of the tungsten wire to be drawn in the drawing die 601.
Meanwhile, the diameter of the wire drawing disc 201 on the main wire drawing disc group 2 is larger than or equal to 360mm, the diameter of the wire drawing disc on the auxiliary wire drawing disc group 3 is larger than or equal to 360mm, and the diameter of the wire drawing disc 203 of the wire drawing and winding disc is larger than or equal to 380mm, so that stress concentration caused by too small diameter of a tungsten wire ring is effectively avoided, and wire breakage is caused.
In this application, wire drawing die frame 6, heating fire groove 5 and mould lubrication groove 4 have been set gradually along the second direction between main wire drawing dish group 2 and supplementary wire drawing dish group 3. Wherein, n+1 die mounting grooves are arranged on the wire drawing die frame 6 along the first direction, and n+1 wire drawing dies 601 are respectively arranged in the n+1 die mounting grooves; an n+1 lubrication emulsion nozzle 401 is provided in the first direction in the mold lubrication groove 4. The drawing holes of the n+1 drawing dies 601 respectively correspond to the n+1 lubrication emulsion spray holes 401, and a heating fire groove 5 is correspondingly arranged between each drawing die 601 and the corresponding lubrication emulsion spray hole 401. That is, the n+1 drawing dies 601 are respectively collinear with the n+1 heating flame grooves 5, n+1 lubrication emulsion ejection holes 401 in the second direction.
For the n+1 wire drawing die 601, the diameter of the wire drawing hole of the n+1 wire drawing die 601 gradually decreases along the first direction, that is, the wire drawing hole of the n+1 wire drawing die 601 gradually increases from inside to outside along the width direction of the wire drawing platform 1, so that the tungsten wire finally reaches the set wire drawing diameter after passing through the wire drawing hole with the gradually decreasing diameter.
In the present application, the axes of the wire drawing holes on the rear n wire drawing dies 601 along the first direction (i.e. the 2 nd to n+1 th wire drawing dies from outside to inside along the width direction of the wire drawing platform 1) are tangent to the upper surfaces of the n wire drawing discs 201 on the main wire drawing disc group 2 respectively; the axes of the first n lubrication emulsion spray holes 401 along the first direction (i.e., along the width direction of the drawing bench 1, from the 1 st to the nth from the outside to the inside) are tangent to the upper surfaces of the n drawing drums on the auxiliary drawing drum set 3, respectively. Therefore, in the wire drawing process, tungsten wires are wound in and out along the tangential direction of the wire drawing discs on the main wire drawing disc group 2 and the auxiliary wire drawing disc group 3, and the wire drawing quality is further improved.
Specifically, in the drawing process, firstly, a drawing die 601 with the largest drawing hole diameter is placed in a 1 st die mounting groove (namely, the die mounting groove at the outermost side in the width direction of a drawing platform 1) on a drawing die frame 6, after the diameter of a tungsten wire is reduced through a melting groove, the tungsten wire passes through a first lubricating emulsion spray hole 401, is sprayed with lubricating emulsion, then sequentially passes through a 1 st heating fire groove 5 corresponding to the 1 st lubricating emulsion spray hole 401, then passes through the drawing die 601, the head of the tungsten wire is clamped on a drawing disc 203 of a main drawing disc group 2 by a drawing clamp, after winding 2-4 circles on the drawing disc 203, the drawing die 601 with the largest drawing hole diameter is taken down along with the tungsten wire in the 1 st die mounting groove.
The drawn tungsten wire is wound on an nth drawing disc 201 (i.e., the innermost drawing disc 201 in the width direction of the drawing bench 1) of the main drawing disc group 2, and a drawing die 601 with the largest drawing hole diameter is drawn out along with the tungsten wire from a 1 st die mounting groove and is placed in an n+1th die mounting groove, and at the same time, the tungsten wire passes through a corresponding n+1th lubricating emulsion spray hole 401 and a corresponding n+1th heating flame groove 5 on the die lubricating groove 4.
The tungsten filament is wound from the lower surface of the nth wire drawing disc 201 of the main wire drawing disc group 2 to the nth wire drawing disc of the auxiliary wire drawing disc group 3 after being wound on the nth wire drawing disc 201 for a plurality of circles, and is wound from the upper surface of the nth wire drawing disc of the auxiliary wire drawing disc group 3 after being wound on the nth wire drawing disc of the auxiliary wire drawing disc group 3 for a plurality of circles.
Then, the wire drawing die 601 with a smaller wire drawing hole diameter is placed in a 1 st die mounting groove (i.e., the die mounting groove on the outermost side in the width direction of the wire drawing platform 1); the head of the tungsten filament wound out from the upper surface of the nth wire drawing disc of the auxiliary wire drawing disc group 3 passes through the 1 st lubricant spray hole 401, after being sprayed with lubricant, passes through the 1 st heating fire groove 5, passes through the wire drawing die 601 put into the 1 st die mounting groove, is wound on the wire drawing disc 203 of the main wire drawing disc group 2 for 2-4 circles again, and is taken down from the wire drawing disc 203, and meanwhile, the wire drawing die 601 in the 1 st die mounting groove is taken out together with the tungsten filament.
The extracted tungsten filament is wound on the n-1 th wire drawing disc 201 of the main wire drawing disc group 2, and the wire drawing die 601 which is taken out along with the tungsten filament in the 1 st die mounting groove is placed in the n-th die mounting groove, and meanwhile, the tungsten filament passes through the corresponding n-th lubrication emulsion spray hole 401 on the die lubrication groove 4 and the corresponding n-th heating flame groove 5.
The tungsten filament is wound from the lower surface of the n-1 wire drawing disc 201 of the main wire drawing disc group 2 to the n-1 wire drawing disc of the auxiliary wire drawing disc group 3 after being wound on the n-1 wire drawing disc 201 for a plurality of times, and wound from the upper surface of the n-1 wire drawing disc of the auxiliary wire drawing disc group 3 after being wound on the n-1 wire drawing disc of the auxiliary wire drawing disc group 3 for a plurality of times.
And the process is sequentially circulated until the tungsten wire passes through all the wire drawing dies 601, and the head of the tungsten wire is fixed on the wire drawing and winding disc.
Further, a pay-off rack 9 is further arranged in the wire drawing device, the pay-off rack 9 is placed close to the auxiliary wire drawing disc group 3, the damping pay-off rack 9 is adjustable in damping, and tungsten wires to be drawn are wound on the wire preventing rack. A wire guide wheel 10 is arranged between the pay-off rack 9 and the die lubrication groove 4, and after the tungsten wire is lifted out of the pay-off rack 9, the tungsten wire penetrates into the die lubrication groove 4 through the wire guide wheel 10. The upper surfaces of the wire guide wheels 10 reaching the wire slots are tangent to the axes of the n+1 lubrication emulsion spray holes 401 in the second direction respectively, wherein the number of the wire guide wheels 10 is n+1.
In this application, just facing n wire drawing discs 201 of main wire drawing disc group 2, be provided with n wire drawing wheel heating firehead 8, every wire drawing wheel heating firehead 8's center is provided with the fire-spraying mouth, heats corresponding wire drawing disc 201 through the fire-spraying mouth. N+1 die heating fire heads 7 are arranged above the wire drawing die frame 6 and are opposite to n+1 wire drawing dies 601 on the wire drawing die frame 6, and the corresponding wire drawing dies 601 are heated by the die heating fire heads 7.
In a specific example, the die heating fire head 7 and the wire drawing wheel heating fire head 8 can be controlled by corresponding air valves and natural air valves to effectively control the heating temperature and improve the control precision. The heating fire groove 5 positioned between the wire drawing die 601 and the die lubrication groove 4 for heating the tungsten wire can be a C-shaped stainless steel fire groove, and the heating temperature is controlled and regulated through corresponding air valves and natural air valves. Further, a temperature-resistant coating with a temperature resistance of not lower than 1000 ℃ is sprayed on the surfaces of the wire drawing disc and the wire drawing disc 203, such as ceramics or high-temperature alloy with a temperature resistance of not lower than 1000 ℃.
By the variable frequency wire drawing device, during wire drawing, only the same position of the head of the tungsten wire is required to be corroded, reduced in diameter and clamped, so that material loss during wire drawing and clamping is effectively reduced; the wire drawing disc 201 and the wire drawing disc 203 on the main wire drawing disc group 2 are of an integral structure, so that the stability of wire drawing control force is effectively ensured; the curvature radius of the tungsten wire on the main wire drawing disc group 2 and the auxiliary wire drawing disc group 3 is larger, and the collinear arrangement of the auxiliary wire drawing disc group 3, the die lubrication groove 4, the heating fire groove 5, the wire drawing die 601 and the main wire drawing disc group is combined, so that brittle failure caused by bending transition of the tungsten wire is effectively avoided, wire drawing uniformity is good, the surface reduction rate is stable, multi-pass simultaneous wire drawing can be realized, the production efficiency is effectively improved, the loss and the labor intensity are reduced, and the guarantee is provided for subsequent processing of tungsten alloy wires.
The embodiment of the application also provides a multi-die variable frequency wire drawing method for drawing thick tungsten wires, as shown in fig. 12, the multi-die variable frequency wire drawing device for drawing thick tungsten wires of any embodiment is adopted for drawing, and the wire drawing method comprises the following steps:
step S101, starting the wire drawing wheel heating fire head 8 to heat n wire drawing discs 201 arranged in parallel along the first direction on the main wire drawing disc group 2.
Step S102, placing a wire drawing die 601 with the largest wire drawing hole diameter in a 1 st die mounting groove arranged along a first direction on a wire drawing die frame 6, and starting a die heating fire head 7 to heat the wire drawing die 601 with the largest wire drawing hole diameter;
step S103, after reducing the diameter of a tungsten wire to be drawn through a wire melting groove, passing through a 1 st lubricating emulsion spray hole 401 arranged on a die lubricating groove 4 along a first direction, spraying lubricating emulsion, sequentially passing through a heating fire groove 5 collinear with the 1 st lubricating emulsion spray hole 401 along a second direction and a wire drawing die 601 with the largest aperture of a wire drawing hole, and clamping on a wire drawing take-up reel.
Step S104, driving a wire drawing and winding disc 203 of the wire drawing and winding disc to rotate through a first variable frequency motor, taking down tungsten wires from the wire drawing and winding disc after winding 2-4 circles, passing through an n+1th lubricating emulsion spray hole 401 and an n+1th heating fire slot 5 which are collinear along a second direction, taking out a corresponding wire drawing die 601 from the 1 st die mounting slot, and placing the wire drawing die 601 in the n+1th die mounting slot;
step S105, starting from the upper part of the nth wire drawing disc 201 of the main wire drawing disc group 2, winding a plurality of circles on the nth wire drawing disc 201 of the main wire drawing disc group 2, enabling the tungsten wire passing through the wire drawing die 601 to pass through the lower part of the nth wire drawing disc 201 of the main wire drawing disc group 2 to the lower part of the nth wire drawing disc on the auxiliary wire drawing disc group 3, winding a plurality of circles on the nth wire drawing disc of the auxiliary wire drawing disc group 3, and enabling the tungsten wire to pass through the upper part of the nth wire drawing disc of the auxiliary wire drawing disc group 3.
Step S106, repeating the steps in sequence until the tungsten wire passes through all the wire drawing dies 601, and fixing the tungsten wire on a wire drawing and winding disc for wire drawing.
When the step S101, the step S102, and the step S103 are not in sequential relationship, they may be performed simultaneously. The tungsten filament provided by the embodiment of the application can realize all effects of the tungsten filament using the multi-die variable frequency wire drawing device by using the multi-die variable frequency wire drawing method, and the effects are not repeated here.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. A multi-die variable frequency wire drawing device for thick tungsten wire drawing, which is characterized by comprising: the wire drawing platform, the main wire drawing disc group, the auxiliary wire drawing disc group, the die lubrication groove, the heating fire groove, the wire drawing die rack, the wire drawing wheel heating fire head and the die heating fire head; the main wire drawing disc group, the auxiliary wire drawing disc group, the die lubrication groove, the heating fire groove and the wire drawing die rack are all positioned on the wire drawing platform;
the main wire drawing disc group and the auxiliary wire drawing disc group respectively comprise n wire drawing discs which are arranged in parallel along a first direction, and the main wire drawing disc group and the auxiliary wire drawing disc group are respectively positioned at two ends of the wire drawing platform; the wire drawing die rack, the heating fire groove and the die lubrication groove are sequentially arranged between the main wire drawing disc group and the auxiliary wire drawing disc group along a second direction; wherein n is a positive integer, and n is more than or equal to 2; the first direction is the axial direction of the main wire drawing disc group; the second direction is the direction from the main wire drawing disc group to the auxiliary wire drawing disc group;
n+1 die mounting grooves are formed in the wire drawing die frame along the first direction, n+1 wire drawing dies are respectively arranged in the n+1 die mounting grooves, and n+1 wire drawing dies are respectively collinear with n+1 heating fire grooves and n+1 lubricating emulsion spray holes in the die lubricating grooves in the second direction; the diameter of the wire drawing holes of the n+1 wire drawing dies is gradually reduced along the first direction; the axes of the wire drawing holes on the rear n wire drawing dies along the first direction are tangent to the upper surfaces of the n wire drawing discs on the main wire drawing disc group respectively; the axes of the first n lubricating emulsion spray holes along the first direction are tangential to the upper surfaces of the n wire drawing disks on the auxiliary wire drawing disk group respectively;
the number of the wire drawing wheel heating fire heads is n, and the wire drawing wheel heating fire heads are opposite to the number of the wire drawing discs on the main wire drawing disc group; the number of the die heating fire heads is n+1, and the n+1 die heating fire heads are positioned right above the wire drawing die and are opposite to the n+1 wire drawing die;
the main wire drawing disc group is driven by a first variable frequency motor, one end far away from the first variable frequency motor is further provided with a wire drawing and winding disc, and the wire drawing and winding disc and the 1 st wire drawing die along the first direction are collinear in the second direction.
2. The multi-die variable frequency wire drawing device for rough tungsten wire drawing according to claim 1, wherein the diameter of the wire drawing disc on the main wire drawing disc group is more than or equal to 360mm; the diameter of the wire drawing disc on the auxiliary wire drawing disc group is more than or equal to 360mm; the diameter of the wire drawing disc of the wire drawing and winding disc is larger than or equal to 380mm;
and/or the number of the groups of groups,
and the surfaces of the wire drawing disc and the wire drawing disc are respectively sprayed with a temperature-resistant coating with the temperature resistance of not lower than 1000 ℃.
3. The multi-die variable frequency wire drawing device for thick tungsten wire drawing according to claim 1, wherein n wire drawing discs are of split type detachable structure or of integral structure.
4. The multi-die variable frequency wire drawing device for rough tungsten wire drawing according to claim 1, wherein,
the linear speed of the main wire drawing disc group is higher than that of the auxiliary wire drawing disc group, and is 50% higher than the wire drawing reduction rate; wherein, according to the formula:
determining the wiredrawing reduction rate eta;
wherein d 0 The wire inlet sectional area of the tungsten wire to be drawn in the wire drawing die is; d, d 1 The wire-outgoing sectional area of the tungsten wire to be drawn in the wire-drawing die is the wire-outgoing sectional area of the tungsten wire to be drawn in the wire-drawing die.
5. The multi-die variable frequency wire drawing device for rough tungsten wire drawing according to claim 4, wherein the main wire drawing disc group is connected with the output end of the first variable frequency motor through a main wire drawing shaft, and an auxiliary wire drawing shaft of the auxiliary wire drawing disc group is connected with the main wire drawing shaft through chain transmission;
or,
the auxiliary wire drawing disc group is driven by a second variable frequency motor.
6. The multi-die variable frequency wire drawing apparatus for rough tungsten wire drawing according to claim 1, wherein the multi-die variable frequency wire drawing apparatus further comprises: and a wire paying-off frame is arranged between the wire paying-off frame and the die lubrication groove, wherein n+1 wire guiding wheels are arranged, and the upper surfaces of the n+1 wire guiding grooves of the wire guiding wheels are tangent to the axes of n+1 lubrication emulsion spray holes in the second direction.
7. A multi-die variable frequency wire drawing method for drawing a thick tungsten wire, characterized in that a multi-die variable frequency wire drawing device for drawing a thick tungsten wire according to any one of claims 1 to 6 is adopted, the wire drawing method comprising:
starting a wire drawing wheel heating fire head to heat n wire drawing discs which are arranged in parallel along a first direction on a main wire drawing disc group;
placing a wire drawing die with the largest wire drawing hole diameter in a 1 st die mounting groove arranged on a wire drawing die frame along a first direction, and starting a die heating fire head to heat the wire drawing die with the largest wire drawing hole diameter;
reducing the diameter of a tungsten wire to be drawn through a wire melting groove, passing through a 1 st lubricating emulsion spray hole arranged on a mold lubricating groove along a first direction, spraying lubricating emulsion, sequentially passing through a heating fire groove collinear with the 1 st lubricating emulsion spray hole along a second direction and a wire drawing mold with the largest aperture of the wire drawing hole, and clamping on a wire drawing take-up reel;
the wire drawing take-up reel is driven to rotate by a first variable frequency motor, after a tungsten wire is wound on a wire drawing disc of the wire drawing take-up reel for 2-4 circles, the tungsten wire is taken down from the wire drawing take-up reel and passes through an n+1th lubricating emulsion spray hole and an n+1th heating fire slot which are collinear along the second direction, and meanwhile, the corresponding wire drawing die is taken out from the 1 st die mounting slot and is placed in the n+1th die mounting slot;
the tungsten wire passing through the wire drawing die starts from the upper part of an nth wire drawing disc of the main wire drawing disc group, winds a plurality of circles on the nth wire drawing disc of the main wire drawing disc group, passes out from the lower part of the nth wire drawing disc of the auxiliary wire drawing disc group towards the lower part of the nth wire drawing disc of the main wire drawing disc group, winds a plurality of circles on the nth wire drawing disc of the auxiliary wire drawing disc group, and passes out from the upper part of the nth wire drawing disc of the auxiliary wire drawing disc group;
and sequentially repeating until the tungsten wire passes through all the wire drawing dies, and fixing the tungsten wire on the wire drawing and winding disc for wire drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311283531.1A CN117505560A (en) | 2023-10-07 | 2023-10-07 | Multimode variable frequency wire drawing device and method for thick tungsten wire drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311283531.1A CN117505560A (en) | 2023-10-07 | 2023-10-07 | Multimode variable frequency wire drawing device and method for thick tungsten wire drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117505560A true CN117505560A (en) | 2024-02-06 |
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ID=89755702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311283531.1A Pending CN117505560A (en) | 2023-10-07 | 2023-10-07 | Multimode variable frequency wire drawing device and method for thick tungsten wire drawing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117505560A (en) |
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2023
- 2023-10-07 CN CN202311283531.1A patent/CN117505560A/en active Pending
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