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High-conductivity, arc-resistance and free-cutting leadfree tellurium copper alloy material

An alloy material and anti-arc technology, applied in the field of tellurium copper alloy materials, can solve the problems of high cost of bismuth brass, unfavorable processing and production, high price, and achieve the effects of good cold and hot processing performance, excellent electrical conductivity and high thermal conductivity

Inactive Publication Date: 2015-09-23
SHANGHAI FANGYI ENTERPRISE DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of bismuth brass is high due to the very limited resources of selenium and bismuth and the high price
[0004] In addition, due to the thermal brittleness of lead brass, it is easy to crack during thermal processing, which is not conducive to processing and production.

Method used

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  • High-conductivity, arc-resistance and free-cutting leadfree tellurium copper alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The present invention is prepared according to the following steps:

[0049] 1) Melting in a power frequency induction furnace: After melting the melting channel of the electric furnace, gradually add industrial pure copper. After the solid copper is melted, raise the temperature of the molten copper to 1200°C, and cover it with 15cm thick charcoal for heat preservation.

[0050] 2) Tellurium infiltration

[0051] Wrap 0.5 wt% of pure tellurium and press it into the furnace bottom of a power frequency induction furnace near the mouth of the melting channel. At this time, the furnace temperature is 1200° C. and the time is 60 minutes.

[0052] 3) Add trace elements

[0053] The trace element P 0.01wt% is melted and casted in the atmosphere condition, and the trace element master alloy is infiltrated with the above-mentioned tellurium into the copper for 60 minutes, and the trace element master alloy is added. After 20 minutes, the melting of the tellurium-copper alloy l...

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PUM

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Abstract

The invention relates to the technical field of preparation of alloy materials, in particular to a tellurium copper alloy material. The high-conductivity, arc-resistance and free-cutting leadfree tellurium copper alloy material is prepared by the following raw materials in percentage by weight: 0.4-0.7% of Te, 0.01-0.015% of P, and the balance of Cu. As the technical scheme is adopted, the prepared tellurium copper alloy gives consideration to excellent free-cutting performance, excellent electricity and heat conductivity and higher toughness, corrosion resistance and electric ablation resistance, has equivalent arc resistance with a silver-copper alloy, is better in cold and hot machinability, and can be forged, extruded, drawn, punched and molded.

Description

technical field [0001] The invention relates to the technical field of alloy material preparation, in particular to a tellurium-copper alloy material. Background technique [0002] Lead-containing copper alloys are easy to cut and have excellent physical, chemical and mechanical properties, and are widely used as a class of copper alloys. At present, the annual output of only lead brass in my country is about 400,000 tons. However, lead is neither solid-soluble in copper nor forms intermetallic compounds with copper. Under the action of impurities in drinking water and organic acids, the lead in lead-containing copper alloys will slowly precipitate out. Existing lead-containing copper alloys It is difficult to meet the increasingly higher environmental protection requirements. This kind of copper alloy will cause environmental pollution and endanger human health in the process of production and use, so its application is increasingly restricted. In addition, developed cou...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/03B22D11/00
Inventor 邱忠强
Owner SHANGHAI FANGYI ENTERPRISE DEV CO LTD
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