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Nickel-contained copperizing agent and preparation method of agent

A technology of copper infiltrating agent and copper powder, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of low product strength, low product density, low product precision, etc., achieve good wettability, increase density and strength Effect

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] Products produced by ordinary powder metallurgy process have low finished product density, especially some parts cause sintering deformation, resulting in low product precision, poor product consistency and interchangeability, and are not suitable for mass production; and the product has low strength and poor surface finish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A nickel-containing copper seeping agent, its composition includes: 3% iron, 0.7% nickel, 3% zinc and the balance of copper, wherein the raw material of iron is reduced iron powder, the raw material of nickel is nickel powder, zinc The 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 nickel 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 nickel-containing copper-seeding agent, the method steps are as follows:

[0025] (1) Weigh electrolytic copper powder: 93.3kg, reduced iron powder: 3kg, nickel powder: 0.7kg, zinc powder: 3kg, according to the ratio of ball to material 1:20, add 5kg of alumina ceramic balls, add 0.2kg of NH4Cl...

Embodiment 2

[0029] A nickel-containing copper seeping agent, its composition includes: 5% iron, 1% nickel, 5% zinc and the balance copper, wherein the raw material of iron is reduced iron powder, the raw material of nickel is nickel powder, zinc The raw material is zinc powder, and the 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 nickel 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 nickel-containing copper-seeding agent, the method steps are as follows:

[0035] (1) Weigh electrolytic copper powder: 89kg, electrolytic iron powder: 5kg, nickel-iron powder: 1kg, zinc powder: 5kg, according to the ratio of ball to material 1:20, add 5kg of zirconia ceramic balls, and add 0.15kg o...

Embodiment 3

[0039] A nickel-containing copper seeping agent, its composition includes: 3.6% iron, 0.9% nickel, 4% zinc and the balance of copper, wherein the raw material of iron is carbonyl iron powder, the raw material of nickel is nickel powder, zinc The raw material is zinc powder, and the copper raw material 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 nickel 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 nickel-containing copper-seeding agent, the method steps are as follows:

[0045] (1) Weigh atomized copper powder: 91.5kg, carbonyl iron powder: 3.6kg, nickel powder: 0.9kg, zinc powder: 4kg, according to the ratio of ball to material 1:20, add 5kg of stainless steel balls, add 0.25kg of NH4I as ...

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Abstract

The invention relates to the technical field of powder metallurgy, and discloses a nickel-contained copperizing agent and a preparation method of the agent. The copperizing agent comprises, by mass, 3% to 5% of iron, 0.7% to 1% of nickel, 3% to 5% of zinc and the balance copper. The preparation method comprises the steps that raw materials are weighed in proportion, ceramic balls or stainless steel balls and diffusion accelerators are added, mixing is carried out, powder is fed into a hydrogen reduction furnace for diffusion, the diffusion temperature ranges from 300 DEG to 1, 000 DEG C, the diffusion time ranges from 0.5 hour to 25 hours, cooling, furnace outlet and crushing, and screening and collection are carried out in sequence, and then lubricants are added for blending. The preparedcopperizing agent has the characteristics of being good in forming property, high in infiltration efficiency, free of erosion, low in residue quantity and capable of improving material density and mechanical property, the preparation method is simple in process, needed equipment is easy to operate, and batch production can be implemented.

Description

technical field [0001] The invention relates to the field of metallurgical materials, in particular to a nickel-containing copper penetration 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 tha...

Claims

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Application Information

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IPC IPC(8): B22F3/26B22F1/00
CPCB22F3/26B22F1/10
Inventor 邹勇平吕廷镇
Owner WUXI HENGTELI METAL PROD
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