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A kind of preparation method of gold-tin-tin wire, foil tape and solder preform

A technology of solder preforms and foil strips, applied in welding equipment, metal processing equipment, welding media, etc., can solve the problems of high brittleness and difficult processing of gold-tin alloys, so as to ensure bright surface, reduce oxide layer, easy molding effect

Active Publication Date: 2016-03-02
SHENZHEN FUMOSUO METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing method, the preparation of the foil needs to be rolled, and the gold-tin-tin wire needs to be drawn before it can be formed. Due to the high brittleness of the gold-tin alloy, it is difficult to process it by rolling or drawing.

Method used

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  • A kind of preparation method of gold-tin-tin wire, foil tape and solder preform
  • A kind of preparation method of gold-tin-tin wire, foil tape and solder preform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Put 0.08 tons of gold with a purity of 99.99% and 0.02 tons of tin with a purity of 99.99% in a melting furnace to form alloys at a melting temperature of 450°C. Take 300g of molten alloy and put it into the test mold to cool to room temperature, and then test it. After the content of each metal meets the conditions, pour the molten metal into a mold with a diameter of 70mm to make an alloy rod, and remove the surface oxidation of the cast alloy rod After the goods are vacuum packed.

[0031] Step 2: First clean the feeding cylinder, extrusion column, mold, etc. of the 350-ton extruder, then put the alloy rod into the extrusion cylinder for annealing, and close the outlet of the extruder with a solid mold, and the inside of the extruder The pressure was adjusted to 100MPa, the temperature was 200°C, and annealed for 4h. Roll out the alloy rod, remove the oxide on the surface of the alloy rod, and then vacuum pack the alloy rod.

[0032] Step 3, install a tin w...

Embodiment 2

[0034] Step 1: Put 0.08 tons of gold with a purity of 99.99% and 0.02 tons of tin with a purity of 99.99% in a melting furnace to form alloys at a melting temperature of 500°C. Take 300g of molten alloy and put it into the test mold to cool to room temperature, and then test it. After the content of each metal meets the conditions, pour the molten metal into a mold with a diameter of 70mm to make an alloy rod, and remove the surface oxidation of the cast alloy rod After the goods are vacuum packed.

[0035] Step 2: First clean the feeding cylinder, extrusion column, mold, etc. of the 350-ton extruder, then put the alloy rod into the extrusion cylinder for annealing, and close the outlet of the extruder with a solid mold, and the inside of the extruder The pressure was adjusted to 130MPa, the temperature was 250°C, and annealed for 4h. Roll out the alloy rod, use a peeling machine to remove the oxide on the surface of the alloy rod, and then vacuum pack the alloy rod.

[0036...

Embodiment 3

[0038] Step 1: Put 0.08 tons of gold with a purity of 99.99% and 0.02 tons of tin with a purity of 99.99% in a melting furnace to form alloys at a melting temperature of 500°C. Take 300g of molten alloy and put it into a test mold to cool to room temperature, and then test it. After the content of each metal meets the conditions, pour the molten metal into a mold with a diameter of 70mm to make an alloy rod. The cast alloy rod uses a peeling machine Vacuum packaging after removing surface oxides.

[0039] Step 2: First clean the feeding cylinder, extrusion column, mold, etc. of the 350-ton extruder, then put the alloy rod into the extrusion cylinder for annealing, and close the outlet of the extruder with a solid mold, and the inside of the extruder The pressure was adjusted to 150MPa, the temperature was 300°C, and annealed for 3h. Roll out the alloy rod, use a peeling machine to remove the oxide on the surface of the alloy rod, and then vacuum pack the alloy rod.

[0040] ...

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Abstract

The invention provides a production method of a gold-tin wire, a foil belt and a preforming welding piece and belongs to the welding technical field. The production method comprises step 1, smelting gold and tin into alloy and casting the gold and the tin into an alloy rod; step 2, performing annealing; step 3, performing extrusion forming which comprises arranging a tin wire die with a circular hole at the position of the outlet of an extruding machine first when the ally rod needs to be extruded into a tin wire and arranging a foil belt die with a square hole at the position of the outlet of the extruding machine first when the ally rod needs to be extruded into the foil belt, then placing the product in the step 2 into the extruding machine, adjusting the intensity of pressure of the extruding machine to 250 to 350 Mpa and adjusting the temperature to 150 to 230 DEG C; step 4, cutting the foil belt which is obtained through extrusion in the step 3 into the preforming welding piece. According to the production method of the gold-tin wire, the foil belt and the preforming welding piece, the problem that the machining forming is difficult due to the high brittleness of the gold-tin alloy in the prior art is solved, the technological process is simple and convenient, the mass production can be performed, the product accuracy is good, and the product consistency is good.

Description

technical field [0001] The invention relates to the field of soldering technology, in particular to a preparation method of gold-tin-tin wire, foil tape and preformed solder sheet. Background technique [0002] Due to brittle alloys, especially Au 80 sn 20 Alloy, with its excellent electrical conductivity, easy welding, corrosion resistance and other characteristics, is widely used in welding. It mainly exists in the form of solder paste in the welding process, but it contains flux, and welding in many fields cannot be used, so Need to be made into wire, solder preforms. Chinese patent CN103100825A published on May 15, 2013 discloses a method for preparing gold-tin solder preforms, the steps of which include: (1) melting alloy; (2) ingot casting; (3) rolling; (4) ) Annealing; (5) Punching. Due to many processing steps, the process is difficult to control, and it is not easy to achieve product consistency. In addition, the traditional preparation method of gold-tin-tin w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23P15/00C22C1/02C22C5/02
CPCB23K35/40C22C1/02C22C5/02
Inventor 刘惠玲刘国东刘国红杨正勇
Owner SHENZHEN FUMOSUO METAL PROD
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