CN113231795A - Forming method of micro-special-shaped composite strip with pointed top shape - Google Patents
Forming method of micro-special-shaped composite strip with pointed top shape Download PDFInfo
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- CN113231795A CN113231795A CN202110536130.7A CN202110536130A CN113231795A CN 113231795 A CN113231795 A CN 113231795A CN 202110536130 A CN202110536130 A CN 202110536130A CN 113231795 A CN113231795 A CN 113231795A
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- composite strip
- layer material
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- contact layer
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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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- 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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
Abstract
The invention discloses a method for forming a micro-special-shaped composite strip with a pointed top shape, which comprises an I-shaped wheel, an electric contact layer material, a base layer material, a roller welding electrode wheel, a composite strip after roller welding, a drawing die, a rectangular composite strip, a four-roller device, a pointed top composite strip, a roller, a finished product composite strip and a take-up pulley, wherein the electric contact layer to be subjected to roller welding and the base layer material are subjected to wire drawing, shaping, annealing, cleaning and other procedures. The invention adopts the rectangular wire as the pre-arranged wire of the tip-shaped micro-profiled composite strip, reduces the use of special-shaped dies, increases the universality of the dies, adopts the four-roller stripping mode for forming, improves the forming efficiency compared with the rolling forming mode, reduces the internal extrusion tendency of noble metal, improves the distribution uniformity of the electric contact layer of the finished product, adopts the four-roller stripping mode for forming, and can ensure the centering of the electric contact layer compared with the drawing forming mode, and the controllability of the processing process is high.
Description
Technical Field
The invention relates to the technical field of bimetal composite materials, in particular to a method for forming a micro-special-shaped composite strip with a pointed top shape.
Background
The micro-special-shaped composite belt is a weak current layered electric contact material with small cross section area and special shape, is a key material of an electric contact element in equipment such as automobiles, communication, industrial electronics, household appliances and the like, is widely used in small-scale integrated weak current occasions with high reliability requirements such as automobile relays, temperature controllers, communication relays, keyboards, micro switches, circuit controllers and the like, and plays a role in guiding current and transmitting information.
With the rapid development of electronic information technology, the demand for electrical contact components is increasing, resulting in the consumption of composite electrical contact materials; but the gradual exhaustion of natural resources also requires reasonable utilization of resources and improvement of the utilization rate and recovery rate of precious metals; therefore, saving precious metal is one of the important tasks, which requires designers of electrical contact components to save from the aspect of product design, and also requires manufacturers to improve the utilization rate of the precious metal, so that the section shape of the composite wire material is free from approaching the design requirement.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for forming a micro-profiled composite strip with a pointed shape.
In order to solve the above technical problem, the present invention provides a first technical solution as follows:
the invention relates to a method for forming a micro-special-shaped composite strip with a pointed top shape, which comprises an I-shaped wheel, an electric contact layer material, a base layer material, a roller welding electrode wheel, a composite strip after roller welding, a drawing die, a rectangular composite strip, a four-roller device, a pointed top composite strip, a roller, a finished product composite strip and a take-up pulley, and comprises the following specific steps:
a. processing the electric contact layer to be roll-welded and the base layer material into required round wires and rectangular wires with grooves by the working procedures of wire drawing, shaping, annealing, cleaning and the like, and then taking up the wires to respective I-shaped wheels;
b. continuously seam-welding the electric contact layer material and the substrate layer material through an upper electrode wheel and a lower electrode wheel of a roller welding machine and combining the electric contact layer material and the substrate layer material into a composite wire material with certain width and thickness;
c. the composite wire is processed into a rectangular wire through the working procedures of heat treatment, drawing and the like, then matrix metal on the upper surface of the rectangular wire is stripped through a four-roller drawing device, a required electric contact layer is exposed, and the composite wire with a pointed shape is formed;
d. and (3) precisely shaping the composite wire with the sharp top shape by a die or a special-shaped rolling mode and the like to obtain the special-shaped composite wire meeting the size requirement, and drawing the special-shaped composite wire to a take-up pulley device.
In a preferred embodiment of the present invention, the electrical contact layer material is embedded in the matrix layer material in the middle and occupies only a portion of the matrix layer.
As a preferable technical scheme of the invention, the rectangular composite strip and the pointed composite strip are compounded in a roll welding way.
As a preferable technical scheme of the invention, the electric contact layer material is stripped by adopting four-roller drawing pairs to form the pointed composite strip.
As a preferred technical scheme of the invention, the final position of the electric contact layer material is in a central state, and the deviation from the central line is not more than 0.01 mm.
As a preferable technical scheme of the invention, the four-roller device is used for removing redundant base layer materials on two sides of the rectangular composite strip.
Compared with the prior art, the invention has the following beneficial effects:
1: the rectangular wire is used as the pre-arranged wire of the tip-shaped micro-special-shaped composite strip, so that the use of special-shaped dies is reduced, the die cost is reduced, and the universality of the die is improved;
2: the invention adopts the four-roller stripping mode for forming, and compared with the rolling forming mode, the forming efficiency is improved, the internal extrusion tendency of noble metal is reduced, and the distribution uniformity of the finished product electric contact layer is improved;
3: the invention adopts the four-roller stripping mode for forming, compared with the drawing forming mode, the centering performance of the electric contact layer can be ensured, and the controllability of the processing process is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Wherein like reference numerals refer to like parts throughout.
In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the process of the present invention;
FIG. 3 is a schematic design of a four roll of the present invention;
FIG. 4 is a schematic view of the four roll stripping process of the present invention;
in the figure: 1. a spool; 2. an electrical contact layer material; 3. a base layer material; 4. roll welding the electrode wheel; 5. rolling the composite strip; 6. drawing the die; 7. a rectangular composite strip; 8. a four-roll apparatus; 9. a peaked composite strip; 10. rolling; 11. a finished composite strip; 12. a take-up pulley.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1-4, the invention provides a method for forming a pointed-top-shaped micro-special-shaped composite strip, which comprises an i-shaped wheel 1, an electrical contact layer material 2, a base layer material 3, a roll welding electrode wheel 4, a roll-welded composite strip 5, a drawing die 6, a rectangular composite strip 7, a four-roll device 8, a pointed-top composite strip 9, a roller 10, a finished composite strip 11 and a take-up pulley 12, and comprises the following specific steps:
a. processing the electric contact layer to be roll-welded and the base layer material into required round wires and rectangular wires with grooves by the working procedures of wire drawing, shaping, annealing, cleaning and the like, and then taking up the wires to respective I-shaped wheels 1;
b. continuously seam-welding and combining the electric contact layer material 2 and the substrate layer material 3 into a composite wire material 5 with certain width and thickness through an upper electrode wheel and a lower electrode wheel 4 of a roller welding machine;
c. the composite wire 5 is processed into a rectangular wire 7 through the working procedures of heat treatment, drawing 6 and the like, then matrix metal on the upper surface of the rectangular wire 7 is stripped through a four-roller drawing device 8, a required electric contact layer is exposed, and a composite wire 9 with a pointed shape is formed;
d. and (3) precisely shaping the composite wire 9 with the sharp top shape by a mould or a special-shaped rolling mode 10 and the like to obtain a special-shaped composite wire 11 meeting the size requirement, and drawing the special-shaped composite wire to a take-up pulley device 12.
Further, the electrical contact layer material 2 is embedded centrally in the matrix layer material 3 and only occupies a portion of the matrix layer.
The rectangular composite strip 7 and the pointed composite strip 9 are compounded in a roll welding mode.
The electric contact layer material 2 is stripped by adopting four-roller drawing pair to form a pointed composite strip material 9.
The final position of the electrical contact layer material 2 is centered and deviates from the centre line by no more than 0.01 mm.
The four-roller device 8 is used for removing the redundant base layer materials 3 on two sides of the rectangular composite strip 7, so that the tendency of internal extrusion of the electric contact layer materials 2 is reduced, and the forming efficiency is improved.
Specifically, in the using process, AgPd40 is drawn to a round wire with the wire diameter of 0.23cm, a Ni round wire is rolled to a flat belt, the flat belt is drawn to a grooved rectangular belt with the size of 1.8 x 0.9 by using a special-shaped die, hydrogen protection annealing is carried out at 800 ℃ and 6m/min to reduce the hardness of a base material, two wire materials are subjected to ultrasonic cleaning and then to mosaic roll welding to form a composite strip, the wire materials subjected to roll welding are subjected to annealing treatment and drawn to the size of 0.8 x 0.7 by using the die to serve as the wire feeding size of four-roll stripping, the wire material with the size of 0.8 x 0.7 is processed by four rolls, the scale value of the four rolls is adjusted to strip AgPd40 from Ni to form a finished composite strip 11 with an obvious noble metal tip shape, and finally the size and shape of the composite strip are subjected to final processing by precise drawing or rolling.
The invention aims to provide a method for forming a pointed-top-shaped micro-special-shaped composite strip, which is used for efficiently and stably producing a noble metal centered pointed-top-shaped micro-special-shaped composite strip by using a method of centered positioning roller welding and four-roller drawing stripping, so that the utilization rate of noble metal is improved; the four-roller drawing stripping mode reduces the use of special dies, improves the use proportion of general dies, reduces the cost of dies, ensures that the noble metal of the product is more stable in neutrality and good in front-back consistency
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The forming method of the micro-heterotype composite strip with the pointed top shape comprises an I-shaped wheel (1), an electric contact layer material (2), a base layer material (3), a roll welding electrode wheel (4), a roll welded composite strip (5), a drawing die (6), a rectangular composite strip (7), a four-roller device (8), a pointed top composite strip (9), a roller (10), a finished product composite strip (11) and a take-up pulley (12), and specifically comprises the following steps:
a. processing the electric contact layer to be roll-welded and the base layer material into required round wires and rectangular wires with grooves by the working procedures of wire drawing, shaping, annealing, cleaning and the like, and then taking up the wires to respective I-shaped wheels (1);
b. continuously seam-welding and combining the electric contact layer material (2) and the base body layer material (3) into a composite wire material (5) with certain width and thickness through an upper electrode wheel and a lower electrode wheel (4) of a roller welding machine;
c. the composite wire (5) is processed into a rectangular wire (7) through the working procedures of heat treatment, drawing (6) and the like, then the matrix metal on the upper surface of the rectangular wire (7) is stripped through a four-roller drawing device (8), a required electric contact layer is exposed, and a composite wire (9) with a pointed shape is formed;
d. and (3) precisely shaping the composite wire (9) with the sharp top shape in a mode of a die or a roller (10) and the like to obtain a finished composite strip (11) meeting the size requirement, and drawing the finished composite strip to a take-up pulley device (12).
2. The method for forming a profiled micro-composite strip according to claim 1, characterized in that the electrical contact layer material (2) is embedded centrally in the matrix layer material (3) and occupies only a portion of the matrix layer.
3. The method for forming the pointed-profile micro-profiled composite strip material as claimed in claim 1, wherein the rectangular composite strip material (7) and the pointed-profile composite strip material (9) are compounded by roll welding.
4. The method for forming a pointed profiled micro-profiled composite strip according to claim 1, characterized in that the electrical contact layer material (2) is peeled off by four-roll drawing to form the pointed composite strip (9).
5. The method for forming a profiled micro-composite strip according to claim 1, characterized in that the final position of the electrical contact layer material (2) is centered and deviates from the centre line by no more than 0.01 mm.
6. The method for forming a pointed profiled micro-profiled composite strip according to claim 1, characterized in that said four-roll device (8) is used to remove excess matrix layer material (3) on both sides of the rectangular composite strip (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536130.7A CN113231795A (en) | 2021-05-17 | 2021-05-17 | Forming method of micro-special-shaped composite strip with pointed top shape |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110536130.7A CN113231795A (en) | 2021-05-17 | 2021-05-17 | Forming method of micro-special-shaped composite strip with pointed top shape |
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| CN113231795A true CN113231795A (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415347A (en) * | 2021-10-22 | 2022-12-02 | 烟台万隆真空冶金股份有限公司 | Contact line forming device, system and method |
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| CN101172314A (en) * | 2006-10-31 | 2008-05-07 | 北京有色金属研究总院 | Method of producing tiny special-shaped composite connection point strip |
| CN103128127A (en) * | 2013-03-14 | 2013-06-05 | 合肥工业大学 | Parallel wire roller pulling combined forming technology and production equipment thereof |
| CN104028575A (en) * | 2014-03-03 | 2014-09-10 | 福建东亚机械有限公司 | Processing technology and equipment for steel integral heterotype oil control ring wire rod moulding |
| CN104384186A (en) * | 2014-09-23 | 2015-03-04 | 重庆川仪自动化股份有限公司 | Preparation method of gold-containing three-layer micro deformed electric contact material |
| CN106077081A (en) * | 2016-07-07 | 2016-11-09 | 苏州创浩新材料科技有限公司 | Milling train for three layers of compound micro-special-shaped electric contact band |
| CN106807750A (en) * | 2016-12-27 | 2017-06-09 | 上海大趋金属科技有限公司 | A kind of forming method of tiny special-shaped composite connection point strip material |
| CN108296303A (en) * | 2018-01-19 | 2018-07-20 | 广州众山金属科技有限公司 | Rolling for profile shapes class product draws Joint Production equipment and its rolls drawing production technology |
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2021
- 2021-05-17 CN CN202110536130.7A patent/CN113231795A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1084794A (en) * | 1992-09-30 | 1994-04-06 | 中国有色金属工业总公司昆明贵金属研究所 | Noble metal or alloy micro shape composite filament manufacture method and device |
| CN1507960A (en) * | 2002-12-19 | 2004-06-30 | 日立金属株式会社 | Method and apparatus for forming special-shaped wire material |
| CN101172314A (en) * | 2006-10-31 | 2008-05-07 | 北京有色金属研究总院 | Method of producing tiny special-shaped composite connection point strip |
| CN103128127A (en) * | 2013-03-14 | 2013-06-05 | 合肥工业大学 | Parallel wire roller pulling combined forming technology and production equipment thereof |
| CN104028575A (en) * | 2014-03-03 | 2014-09-10 | 福建东亚机械有限公司 | Processing technology and equipment for steel integral heterotype oil control ring wire rod moulding |
| CN104384186A (en) * | 2014-09-23 | 2015-03-04 | 重庆川仪自动化股份有限公司 | Preparation method of gold-containing three-layer micro deformed electric contact material |
| CN106077081A (en) * | 2016-07-07 | 2016-11-09 | 苏州创浩新材料科技有限公司 | Milling train for three layers of compound micro-special-shaped electric contact band |
| CN106807750A (en) * | 2016-12-27 | 2017-06-09 | 上海大趋金属科技有限公司 | A kind of forming method of tiny special-shaped composite connection point strip material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415347A (en) * | 2021-10-22 | 2022-12-02 | 烟台万隆真空冶金股份有限公司 | Contact line forming device, system and method |
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