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High temperature resistant lead-free tin bar for transformer and preparation method thereof

A lead-free tin bar, high temperature resistant technology, used in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of poor welding performance of ordinary tin bars, and achieve the effect of reducing the generation of tin oxide slag and reducing loss.

Active Publication Date: 2021-07-23
烟台博瑞锡业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims at the problem of poor welding performance of common tin bars used in existing transformers, and provides a high-temperature-resistant lead-free tin bar for transformers and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-temperature resistant lead-free tin bar for transformers, comprising the following components in weight percent: 97% tin, 1.91% copper, 0.7% antimony, 0.08% phosphorus, 0.05% nickel, 0.05% germanium, 0.05% rhenium, and 0.08% gallium and indium 0.08%.

Embodiment 2

[0018] A high-temperature-resistant lead-free tin bar for transformers, comprising the following components in weight percent: 98% tin, 1.4% copper, 0.31% antimony, 0.06% phosphorus, 0.04% nickel, 0.04% germanium, 0.04% rhenium, and 0.06% gallium and indium 0.05%.

Embodiment 3

[0020] A high-temperature-resistant lead-free tin bar for transformers, comprising the following components in weight percent: 99% tin, 0.75% copper, 0.05% antimony, 0.05% phosphorus, 0.03% nickel, 0.03% germanium, 0.03% rhenium, and 0.05% gallium and indium 0.01%.

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PUM

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Abstract

The invention discloses a high-temperature resistant lead-free tin bar for a transformer, which comprises the following components in weight percent: tin 97%-99%, copper 0.75%-2.0%, antimony 0.05%-0.7%, phosphorus 0.05%-0.08% , high temperature metal 0.09%‑0.15% and low temperature metal 0.06%‑0.16%. The preparation method includes melting tin-copper-antimony alloy, melting nickel-germanium-rhenium alloy in an intermediate frequency furnace, adding indium, phosphorus and gallium in sequence, and casting. The beneficial effects of the present invention are: the present invention adds a trace amount of high-temperature metal and low-temperature metal to the components, and the nodules of high-temperature metal and low-temperature metal can change the liquidus temperature of tin so that it can work stably at a temperature of 450°C, thereby Reduce the generation of tin oxide slag, and there will be no yellowing and blackening of the PIN pin during the soldering process, which reduces the loss of raw materials.

Description

technical field [0001] The invention relates to metal processing, in particular to a high-temperature-resistant lead-free tin bar for a transformer and a preparation method thereof. Background technique [0002] The operating temperature of transformer inductors, degaussing coils, aluminum-copper enameled wires, relays, electromagnetic filters and other high-temperature immersion tin is 380-450 ° C. After welding, ordinary tin bars can only be stable in environments below 280 ° C. Higher than this temperature The tin will become brittle. And in the use of ordinary tin bars, the tin surface oxidizes quickly, the surface is blue, there are many tin slags, there are black spots on the welding, yellowing, not smooth, even tin, and poor fluidity. Leading to inability to work, high defect rate, etc. Contents of the invention [0003] The invention aims at the problem of poor welding performance of common tin bars used in existing transformers, and provides a high-temperature-r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/26B23K35/40
CPCB23K35/262B23K35/40
Inventor 刁洪兴潘告华
Owner 烟台博瑞锡业科技有限公司