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Tin bronze alloy powder and preparation method thereof

A technology of alloy powder and tin bronze, which is applied in the field of tin bronze alloy powder and its preparation, can solve the problems of difficult shrinkage control, large bulk density, fast water cooling speed, etc., and achieves increased inventory turnover, low bulk density, loose bulk The effect of low packing density

Inactive Publication Date: 2016-12-14
KUN SHAN DOTOP METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the price of tin bronze powder produced by water atomization is low, but due to the fast water cooling speed in the production process, its hardness is relatively high. At the same time, the tin bronze powder produced by water atomization has a large bulk density and poor formability
The tin bronze powder produced by the mixing method has good formability, but it is easy to segregate during transportation and forming, the strength is low, and the shrinkage rate is not easy to control

Method used

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  • Tin bronze alloy powder and preparation method thereof
  • Tin bronze alloy powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Copper powder is prepared by water atomization method or electrolysis method, and the copper powder is roasted and crushed to obtain -200 mesh copper oxide powder, wherein the oxygen content is 16%;

[0025] 2) Prepare atomized copper-tin alloy powder by water atomization method, wherein the copper content is 50%, and the tin content is: 50%;

[0026] 3) adopt gas atomization method to prepare zinc powder;

[0027] 4) Put the copper oxide powder prepared in step 1), the atomized copper-tin alloy powder prepared in step 2), and the zinc powder prepared in step 3) in a double-cone mixer for 45 minutes to mix evenly, and prepare tin bronze powder The precursor, wherein the content of copper oxide powder is 12%, the content of copper-tin alloy powder is 84%, and the content of zinc powder is 4%;

[0028] 5) Place the tin bronze powder precursor prepared in step 4) in a reducing atmosphere for heat treatment, set the heat treatment temperature to 500°C, and heat treatmen...

Embodiment 2

[0035] 1) Prepare copper powder by water atomization method or electrolysis method, roast and crush the copper powder to obtain -200 mesh copper oxide powder, wherein the oxygen content is 18%;

[0036] 2) Atomized copper-tin alloy powder is prepared by water atomization method, wherein the copper content is 70%, and the tin content is: 30%;

[0037] 3) adopt gas atomization method to prepare zinc powder;

[0038] 4) Put the copper oxide powder prepared in step 1), the atomized copper-tin alloy powder prepared in step 2), and the zinc powder prepared in step 3) in a double-cone mixer for 45 minutes to mix evenly, and prepare tin bronze powder The precursor, wherein the content of copper oxide powder is 20%, the content of copper-tin alloy powder is 74%, and the content of zinc powder is 6%;

[0039] 5) Place the tin bronze powder precursor prepared in step 4) in a reducing atmosphere for heat treatment, set the heat treatment temperature to 600°C, and heat treatment time to 3...

Embodiment 3

[0046]1) Copper powder is prepared by water atomization method or electrolysis method, and the copper powder is roasted and crushed to obtain -200 mesh copper oxide powder, wherein the oxygen content is 20%;

[0047] 2) Atomized copper-tin alloy powder is prepared by water atomization method, wherein the copper content is 90%, and the tin content is: 10%;

[0048] 3) adopt gas atomization method to prepare zinc powder;

[0049] 4) Put the copper oxide powder prepared in step 1), the atomized copper-tin alloy powder prepared in step 2), and the zinc powder prepared in step 3) in a double-cone mixer for 45 minutes to mix evenly, and prepare tin bronze powder The precursor, wherein the content of copper oxide powder is 25%, the content of copper-tin alloy powder is 60%, and the content of zinc powder is 15%;

[0050] 5) Place the tin bronze powder precursor prepared in step 4) in a reducing atmosphere for heat treatment, set the heat treatment temperature to 800°C, and heat trea...

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Abstract

The invention discloses a tin bronze alloy powder and a preparation method thereof and relates to the technical field of metal alloy. The tin bronze alloy powder is prepared from the following raw materials in percentage by weight: 5-40 percent of copper oxide powder, 60-90 percent of copper-tin alloy powder and 0-20 percent of zinc powder. According to the tin bronze alloy powder and the preparation method, by selecting the copper oxide powder, the copper-tin alloy powder and the zinc powder as the raw materials and regulating the proportion of the raw materials, the prepared tin bronze alloy powder is low in apparent density and good in formability; by carrying out pre-oxidation and crushing on copper powder, the using ratio of the copper powder is greatly increased, and the production cost is lowered; and meanwhile, as active diffusion sintering is carried out in the diffusion sintering process in a reducing atmosphere after copper is oxidized, the active diffusion sintering is easier than direct diffusion sintering of the copper powder and the copper-tin alloy powder, and the alloying process is more easily carried out. The preparation method is simple in process; and the prepared tin bronze alloy powder is low in apparent density and good in formability.

Description

technical field [0001] The invention relates to the technical field of metal alloys, in particular to a tin bronze alloy powder and a preparation method thereof. Background technique [0002] Tin bronze alloy is widely used as powder metallurgy, friction material and oil bearing material, and diamond tool matrix material. In recent years, powder metallurgy, diamond tools, decorative materials and other industries have developed rapidly, and the application of tin bronze alloy powder has become more and more extensive. At present, three production methods of atomized alloy process, mixing process and redox process are widely used in the world for large-scale production, and the properties of powders produced according to different production processes are also different. Among them, the price of tin bronze powder produced by water atomization is low, but due to the fast water cooling speed in the production process, its hardness is relatively high. At the same time, the tin ...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/22C22C9/02
CPCB22F1/0003B22F9/22B22F2998/10C22C9/02B22F9/04
Inventor 朱胜利陈文华郭殿月刘茹晶朱金花
Owner KUN SHAN DOTOP METAL TECH CO LTD
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