Tin-based alloy and copper strip composite material and preparation method thereof
A technology of tin-based alloys and composite materials, used in metal processing equipment, metal/alloy conductors, welding equipment, etc., can solve the problems of difficult to control uniformity, easy formation of copper-tin alloys, environmental pollution, etc., and achieve uniform coating thickness. , does not cause environmental pollution, combined with a firm and reliable effect
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Embodiment 1
[0046] To prepare tin-based alloy and copper strip composite material, the copper strip is selected as oxygen-free copper, and the tin-based alloy is tin-indium alloy, wherein the weight percentages of tin and indium are: tin 48%, indium 52%.
[0047] The tin-based alloy and copper strip composite material is prepared by the following method, which specifically includes the following steps:
[0048] Step 1: Select one oxygen-free copper strip (thickness 0.3mm, width 2.5mm) with a clean surface, the purity is higher than 99.99w%; two tin-indium alloy strips with no oil on the surface, wherein the weight percentage of tin and indium For; tin 48%, indium 52%; the thickness of the tin-indium alloy strip is 0.05mm, and the width is consistent with the copper strip.
[0049] Step 2: Firstly, the copper strip selected in Step 1 is drawn through acetone, soaked, heated (the temperature of acetone is 50°C) and ultrasonicated, and then dried with hot air. Then pull the copper strip sol...
Embodiment 2
[0055] Tin-based alloy and copper strip composite material, copper strip is selected as oxygen-free copper, tin-based alloy is tin-bismuth alloy, wherein the weight percentage of tin and bismuth is; tin 42%, bismuth 58%; tin-bismuth alloy strip thickness is 0.1mm .
[0056] The traction speed is 30m / min, and the current frequency is 60KHz. Others are the same as embodiment 1.
Embodiment 3
[0058] Tin-based alloy and copper strip composite material, the copper strip is selected as oxygen-free copper, and the tin-based alloy is a tin-lead-silver alloy, wherein the weight percentages of tin, lead and silver are; tin 62%, lead 36%, silver 2%; tin-lead The thickness of the silver alloy strip is 0.02mm.
[0059] The traction speed is 15m / min, and the current frequency is 60KHz. Others are the same as embodiment 1.
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