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Water atomization ferrum-copper alloy powder and manufacturing method

A technology of iron-copper alloy and manufacturing method, which is applied in the field of water atomization of iron-copper alloy powder and manufacturing to improve the dimensional accuracy of powder metallurgy parts. Effect of excellent sintering dimensional change stability

Inactive Publication Date: 2012-07-11
杭州屹通新材料股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the electrolytic copper powder is prone to segregation during powder mixing, transfer operation or transportation due to the reasons such as fine particles, irregular dendritic powder appearance, and large specific gravity, resulting in uneven composition. The problem is to provide a water-atomized iron-copper alloy powder with reasonable composition and scientific preparation method for improving the dimensional accuracy of powder metallurgy parts and its manufacturing method

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  • Water atomization ferrum-copper alloy powder and manufacturing method
  • Water atomization ferrum-copper alloy powder and manufacturing method
  • Water atomization ferrum-copper alloy powder and manufacturing method

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Embodiment Construction

[0020] The technical solution of the present invention will be further specifically described below in conjunction with the accompanying drawings and through embodiments.

[0021] In this embodiment, an iron-copper alloy powder is atomized with water to improve the dimensional accuracy of powder metallurgy parts. The chemical composition requirements of the alloy powder are: C: 0-0.1%, Si: 0-0.3%, Mn: 0.05-0.5%, P : 0~0.05, S: 0~0.05%, Cu: 5~45%, the rest is iron; the particle size distribution requirements of alloy powder are: >150μm: 0~10%, 150-106μm: 5~25%, 106- 75μm: 10-40%, 75-45μm: 20-40%, <45μm: 10-95%.

[0022] The manufacturing method includes the following steps: smelting, water atomization, drying, reduction and crushing.

[0023] 1. Smelting: Low-carbon scrap steel is selected as raw material, and the chemical composition is based on mass percentage: C=0.3%, Mn=0.63%, Si=0.2%, S=0.05%, P=0.04%, no oil on the surface, no stains on low-carbon scrap steel ; Copper a...

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Abstract

The invention relates to the technical field of powder metallurgy, in particular to water atomization ferrum-copper alloy powder and a manufacturing method, which are used for improving dimensional precision of powder metallurgy parts. Chemical components of the water atomization iron-copper alloy powder include 0-0.1% of C (carbon), 0-0.3% of Si (silicon), 0.05-0.5% of Mn (manganese), 0-0.05% of P (phosphorus), 0-0.05% of S (sulfur), 5-45% of Cu (copper) and the rest ferrum. The manufacturing method includes the steps of smelting, water atomization, drying, reduction and crushing. The powder serves as a copper additive for a series of copper-containing powder metallurgy parts with Fe-Cu-C, Fe-Ni(nickel)-Mo(molybdenum)-Cu-C and the like, has sintered dimensional change stability better than that of electrolytic copper powder, and is beneficial to controlling dimensional precision of sintered parts.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a water-atomized iron-copper alloy powder and a manufacturing method for improving the dimensional accuracy of powder metallurgy parts. Background technique [0002] Powder metallurgy products use metal powder or a mixture of metal and non-metal powder as raw materials, usually formed by pressing, sintering and subsequent processing, with little or no cutting, good surface finish, material saving, energy saving, suitable for mass production, etc. advantage. High dimensional stability, low-cost powder metallurgy production process without shaping and heat treatment is a trend in the development of powder metallurgy, such as sinter hardening technology, is gradually becoming a process method for preparing low-cost, high-performance powder metallurgy iron-based structural parts, Due to the non-shaping and heat treatment after sintering, the overall manufacturing cost is a...

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Application Information

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IPC IPC(8): B22F1/00B22F9/08C22C38/16C22C33/04
Inventor 林俊峰崔毅占建伟
Owner 杭州屹通新材料股份有限公司
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