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High-melting copper infiltration agent and preparing method thereof

A copper infiltration, high melting technology, applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problem of loose surface of parts, reduce copper and other problems, and achieve the effect of improving penetration speed and solubility.

Inactive Publication Date: 2020-04-28
WUXI HENGTELI METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the copper infiltration agent, the function of manganese is to reduce the solubility of iron in copper, but at the same time reduce the melting point of copper on the surface of the part. Therefore, in actual production, although the addition of manganese is beneficial to the amount of copper infiltration during the copper infiltration process, but It is also found that if the permeability of copper is excessively increased and the solubility of iron is reduced, the iron on the surface of the part will continue to dissolve with the infiltrated copper to achieve final saturation during use, resulting in loosening on the surface of the part after a period of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of high infiltration copper agent, its composition comprises by mass percentage: copper base alloy powder 97.2%, manganese powder 1%, zinc powder 1%, zinc stearate powder 0.8%, its composition of described copper base alloy powder is by mass Percentages include: copper powder 97%, iron powder 2%, silicon powder 1%. The iron raw material is reduced iron powder, the manganese raw material is manganese powder, the zinc raw material is zinc powder, and the copper raw material is electrolytic copper powder.

[0020] The electrolytic copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0021] The reduced iron powder has a particle size of less than 150 mesh.

[0022] The manganese powder has a particle size of less than 200 mesh.

[0023] The zinc powder has a particle size of less than 200 mesh.

[0024] A preparation method of high infiltration copper agent, the method steps are as follows:

[0025] (1) Weigh electrolytic cop...

Embodiment 2

[0029] A high infiltration copper agent, its composition includes by mass percentage: copper base alloy powder 98.8%, manganese powder 0.5%, zinc powder 0.2%, zinc stearate powder 0.5%, the composition of copper base alloy powder includes by mass percentage : Copper powder 98.5%, iron powder 1%, silicon powder 0.5%, wherein iron raw material is reduced iron powder, manganese raw material is manganese powder, zinc raw material is zinc powder, copper raw material is electrolytic copper powder.

[0030] The electrolytic copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0031] The reduced iron powder has a particle size of less than 150 mesh.

[0032] The manganese powder has a particle size of less than 200 mesh.

[0033] The zinc powder has a particle size of less than 200 mesh.

[0034] A preparation method of high infiltration copper agent, the method steps are as follows:

[0035] (1) Weigh electrolytic copper powder: 98.5kg, electr...

Embodiment 3

[0039] A high infiltration copper agent, its composition includes by mass percentage: copper-based alloy powder 98.1%, manganese powder 0.4%, zinc powder 0.8%, zinc stearate powder 0.7%, the composition of the copper-based alloy powder by mass Percentages include: copper powder 97.8%, iron powder 1.3%, silicon powder 0.9%, wherein the raw material of iron is carbonyl iron powder, the raw material of manganese is manganese powder, the raw material of zinc is zinc powder, and the raw material of copper is atomized copper powder.

[0040] The atomized copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0041] The carbonyl iron powder has a particle size of less than 700 mesh.

[0042] The manganese powder has a particle size of less than 200 mesh.

[0043] The zinc powder has a particle size of less than 200 mesh.

[0044] A preparation method of high infiltration copper agent, the method steps are as follows:

[0045] (1) Weigh atomized ...

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Abstract

The invention discloses a high-melting copper infiltration agent and a preparing method thereof, and belongs to the technical field of powder metallurgy. The copper infiltration agent comprises components including, by mass percent, 97.2%-98.8% of copper-based alloy powder, 0.5%-1% of manganese powder, 0.2%-1% of zinc powder and 0.5%-0.8% of zinc stearate powder. The preparing method comprises thesteps that the raw materials are weighed according to the proportion, ceramic balls or stainless steel balls and a diffusion accelerant are added, after mixing is conducted, powder is conveyed into ahydrogen reducing furnace to be diffused, the diffusing temperature is 300-1,000 DEG C, the diffusing time is 0.5-25 h, cooling, furnace discharging crushing, and screening and collecting are conducted, and then a lubricating agent is added for blending. The copper infiltration agent prepared through the preparing method has the characteristics that forming performance is good, the infiltration efficiency is high, erosion is avoided, residues are low, and the material density and the mechanical performance are obviously improved. The method is simple in process, needed equipment is easy to operate, and batched production can be achieved.

Description

technical field [0001] The invention relates to the field of metallurgical materials, in particular to a high infiltration copper agent and a preparation method thereof. Background technique [0002] At present, due to its low cost and easy processing, powder metallurgy sintered steel parts are more and more widely used in industrial production, especially in the automotive machinery industry. Commonly used sintered steel gears, cams, valve seats, exhaust valve seats, etc. , when these parts are in service in some harsh environments, they are required to have good wear resistance and impact resistance, while maintaining high strength and hardness. However, the powder metallurgy sintered steel parts manufactured by conventional pressing-sintering process cannot reach a complete compact state during the pressing process, and the residual pores as a defect affect its tensile strength, impact toughness, fatigue strength and hardness. And other properties, so that it can not mee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/36B22F1/00
CPCC23C10/36B22F1/102
Inventor 邹勇平吕廷镇
Owner WUXI HENGTELI METAL PROD