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Zinc-tin-containing copper infiltration agent and preparation method thereof

A technology for copper infiltration and zinc-tin, applied in the field of zinc-tin-containing copper infiltration and its preparation, can solve the problems of low product qualification rate, surface residue, low copper infiltration rate, etc., and achieve high infiltration rate and mechanical properties. Enhanced, uniform appearance

Inactive Publication Date: 2020-04-17
WUXI HENGTELI METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The copper infiltrating agent produced by the traditional process generally has problems such as corrosion of the substrate, surface residues, and low copper infiltration rate, resulting in a low product qualification rate, so the composition of the copper infiltrating agent needs to be optimized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A zinc-tin copper seeping agent, its composition includes: 1.0% iron, 0.3% manganese, 0.5% zinc, 0.01% tin and the balance of copper, wherein the raw material of iron is reduced iron powder, copper The raw material is electrolytic copper powder.

[0019] The electrolytic copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0020] The reduced iron powder has a particle size of less than 150 mesh.

[0021] A preparation method of zinc-tin copper-seeding agent, the method steps are as follows:

[0022] (1) Weigh electrolytic copper powder: 98.19kg, reduced iron powder: 1kg, manganese powder: 0.3kg, zinc powder: 0.5kg, tin powder: 0.01kg, according to the ratio of ball to material 1:20, add 5kg of alumina ceramic balls , add 0.2kg of NH4Cl as a diffusion accelerator, mix in a mixer for 1h;

[0023] (2) After the mixing process is completed, the powder is sent to the hydrogen reduction furnace for diffusion, the diffusion temperature ...

Embodiment 2

[0026] A zinc-tin copper seeping agent, its composition includes: 3.5% iron, 3.0% manganese, 5.5% zinc, 1.5% tin and the balance of copper, wherein the raw material of iron is reduced iron powder, copper The raw material is electrolytic copper powder.

[0027] The electrolytic copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0028] The reduced iron powder has a particle size of less than 150 mesh.

[0029] A preparation method of zinc-tin copper-seeding agent, the method steps are as follows:

[0030] (1) Weigh electrolytic copper powder: 86.5kg, electrolytic iron powder: 3.5kg, manganese powder: 3kg, zinc powder: 5.5kg, tin powder 1.5kg, according to the ratio of ball to material 1:20, add 5kg of zirconia ceramic balls, Add 0.15kg of ZnCl2 as a diffusion accelerator, and mix in a mixer for 1.5h;

[0031] (2) After the mixing process is completed, the powder is sent to the hydrogen reduction furnace for diffusion, the diffusion temp...

Embodiment 3

[0034] A zinc-tin copper infiltrating agent, its composition includes: 2.3% iron, 2.5% manganese, 3% zinc, 0.8% tin and the balance of copper, wherein the raw material of iron is carbonyl iron powder, copper The raw material is atomized copper powder.

[0035] The atomized copper powder has a particle size of less than 100 mesh and a bulk density of 2.0 g / cm3.

[0036] The carbonyl iron powder has a particle size of less than 700 mesh.

[0037] A preparation method of zinc-tin copper-seeding agent, the method steps are as follows:

[0038] (1) Weigh atomized copper powder: 91.4kg, carbonyl iron powder: 2.3kg, ferromanganese powder: 2.5kg, zinc powder: 3kg, tin powder 0.8kg, according to the ratio of ball to material 1:20, add 5kg of stainless steel balls , add 0.25kg of NH4I as a diffusion accelerator, mix in a mixer for 2h;

[0039] (2) After the mixing process is completed, the powder is sent to the hydrogen reduction furnace for diffusion, the diffusion temperature is 85...

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Abstract

The invention discloses a zinc-tin-containing copper infiltration agent and a preparation method thereof, and belongs to the technical field of powder metallurgy. The copper infiltration agent comprises the following components of, in percentage by mass, 1.0%-3.5% of iron, 0.3%-3.0% of manganese, 0.5%-5.5% of zinc, 0.01%-1.5% of tin and the balance copper. The preparation method comprises the following steps that raw materials are weighted according to the proportion, ceramic balls or stainless steel balls and diffusion accelerants are added, after the mixing is completed, powder is fed into ahydrogen reduction furnace for diffusion, the diffusion temperature is 300 DEG C-1000 DEG C, the diffusion time is 0.5h-25h, cooling is carried out, discharging and crushing are carried out, screening and collecting are carried out, and then a lubricant is added for blending. The prepared copper infiltration agent has the characteristics of good formability, high infiltration efficiency, no erosion, low residue and remarkably improving the material density and the mechanical property. The process of the method is simple, required equipment is easy to operate, and the mass production can be realized.

Description

technical field [0001] The invention relates to the field of metallurgical materials, in particular to a zinc-tin copper infiltrating 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 the conventional pressing-sintering process cannot reach a completely dense 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...

Claims

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Application Information

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IPC IPC(8): B22F3/26B22F1/00C22C9/00C22C9/04C22C1/04C23C10/28
CPCB22F3/26C22C9/00C22C9/04C22C1/0425C23C10/28B22F1/10
Inventor 邹勇平吕廷镇
Owner WUXI HENGTELI METAL PROD