Metal injection molding (MIM) high-end cutter, metal powder and preparation method of metal powder

A technology of injection molding and metal powder, which is applied to other manufacturing equipment/tools, turbines, engine components, etc., and can solve the problems of low hardenability, high tendency of quenching deformation and cracking, etc.

Active Publication Date: 2019-06-14
TIZ ADVANCED ALLOY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional tool steel is mainly carbon tool steel. Although its cost is low and its processing performance is good, it has the disadvantages of low hardenability and high tendency of quenching deformation and cracking.

Method used

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  • Metal injection molding (MIM) high-end cutter, metal powder and preparation method of metal powder
  • Metal injection molding (MIM) high-end cutter, metal powder and preparation method of metal powder
  • Metal injection molding (MIM) high-end cutter, metal powder and preparation method of metal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing metal powder suitable for MIM injection molding high-end cutting tools, prepared by the following steps:

[0049] (1) Intermediate frequency induction smelting: Feed pure iron, pure copper, ferrochromium, ferromolybdenum, ferrovanadium, ferrotungsten, high-purity silicon, pig iron and tin in sequence, and then smelt in the atmosphere in an intermediate frequency induction furnace. The ratio of the components of the alloy is:

[0050] 75.8wt%Fe-15wt%Cr-2.5wt%Mo-2.0wt%W-1.0wt%V-1.5wt%Cu-0.5wt%Sn-0.7wt%Si-1.0wt%C; the above ingredients are mass percent ;During the smelting process, the smelting power is controlled to be 100-500KW, and the smelting time is 50.0-55.0 minutes. After the molten steel temperature reaches 1650-1700℃, alloying treatment is carried out. The alloying time is 15 minutes, and then the power is reduced to 100- 150KW, use silicon calcium and lime to deoxidize the molten steel by slagging, and clean the slag, start the pump to po...

Embodiment 2

[0056] The difference between this Example 2 and Example 1 is that the composition of a metal powder suitable for MIM injection molding high-end cutting tools prepared in this Example 2 is adjusted, and the alloy composition of the prepared alloy powder is as follows:

[0057] 74.1wt%Fe-16wt%Cr-2.5wt%Mo-2.0wt%W-1.5wt%V-1.5wt%Cu-0.5wt%Sn-0.7wt%Si-1.2wt%C, the above ingredients are mass percent .

Embodiment 3

[0059] The difference between this Example 3 and Example 1 is that the composition of a metal powder suitable for MIM injection molding high-end cutting tools prepared in this Example 3 is adjusted, and the alloy composition of the prepared alloy powder is as follows:

[0060] 72.4wt%Fe-15wt%Cr-4.0wt%Mo-2.0wt%W-2.0wt%V-1.5wt%Cu-1.0wt%Sn-0.7wt%Si-1.4wt%C, the above ingredients are mass percent .

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Abstract

The invention discloses a metal injection molding (MIM) high-end cutter, metal powder and preparation method of the metal powder. The metal powder is prepared from the following raw material elementsin percentage by mass: 12.0-16.0% of Cr, 2.0-4.0% of Mo, 1.0-4.0% of W, 1.0-3.0% of V, 1.0-1.5% of Cu, 0.5-1.0% of Sn, 0.5-0.7% of Si, 0.5-1.5% of C, 72.0-81.5% of Fe. The metal powder is prepared through a water-gas combined atomization powder-preparing mode. The preparation method comprises the technical processes of medium-frequency induction melting of the alloy elements, water-gas combined atomization, vacuum drying, powder classification and screening, batch processing and the like. The prepared alloy powder has the advantages of uniform alloy composition, uniform organization structure,fine powder granularity, reasonable powder distribution, good sphericity, low impurity content and the like, and can serve as a raw material of the MIM high-end tool to be widely applied.

Description

technical field [0001] The invention relates to the technical field of metal powder material preparation, and specifically refers to a high-end tool for MIM injection molding, metal powder and a preparation method thereof. Background technique [0002] With the continuous advancement of social science and technology and the vigorous development of the tool industry, the market has put forward requirements for excellent machinability and wear resistance of tool steel, requiring tool steel to have high hardness, high wear resistance, and certain toughness and plasticity. . [0003] Traditional tool steel is mainly carbon tool steel. Although it has low cost and good processing performance, it has the disadvantages of low hardenability and high tendency of quenching deformation and cracking. In addition, traditional cast tool steel contains coarse eutectic carbides, which must be broken through repeated forging, rolling and other processes, so that they can become evenly distr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/22B22F5/00B22F9/08C22C38/00C22C38/02C22C38/20C22C38/22C22C38/24
Inventor 乐晨唐明强赵放陈义华
Owner TIZ ADVANCED ALLOY TECH CO LTD
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