Novel hard alloy material preparation process for machining end mill

A cemented carbide and preparation technology, which is applied in the field of preparation of new cemented carbide materials, can solve the problems of short service life of tools, poor high-temperature hardness and wear resistance of rods, and achieve extended service life, high-temperature hardness and wear resistance Good resistance, enhanced high temperature hardness and wear resistance

Inactive Publication Date: 2019-05-28
薛红剑
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AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a new type of cemented carbide material preparation process for processing end mills. The cemented carbide end mills made of rods made of this material and method are especially suitable for various types of heat-resistant End milling of steel, super alloy steel and other materials to solve the defects of poor high temperature hardness and wear resistance of bars and short tool life under the existing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) According to the total weight percentage, choosing the Be powder 8%, Si powder 0.5%, Cr3C2 powder 1.2%, and the TaC-WC solid solution powder 0.5% of the Fischer particle size being 0.6um with the Fibonacci particle size being 0.8um, all the other being Fibonacci Add WC powder with a particle size of 0.3um to the stirring ball mill, then add 0.01% dilute sulfuric acid and 3% glycerin to fully stir and mix;

[0021] (2), select a 1400ml stirring ball mill, add acetic acid to the mixture as a grinding medium according to the ratio of 400ml / kg to the mixture, add grinding balls according to the ratio of ball to material 5:1, and stir and grind. The diameter of the grinding ball is D4, and the ball mill The stirring speed is 500rpm, the filling factor is 0.65, and the grinding is performed for 6 hours to form a slurry;

[0022] (3) Filtration and drying of the slurry, the mesh number of the filter sieve for filtration is 20 mesh, and the drying temperature is 50°C, and f...

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PUM

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Abstract

The invention discloses a novel hard alloy material preparation process for machining an end mill. 8-13% of Be powder with the Fisher particle size being 0.8m-1.0 micron, 0.1-.05% of Si powder, 0.1-1.2% of Cr3C2 powder, 0.5-3.0% of TaC-WC solid solution powder with the Fisher particle size being 0.6-1.2 microns, and the balance WC powder with the Fisher particle size being 0.3-1 micron are added into a stirring ball mill, 0.01-0.03% of dilute sulfuric acid and 1-3% of glycerol are added into the mixture for stirring and mixing; acetic acid is added into the mixture according to the proportionof 400ml / kg, grinding balls are added into the mixture for grinding, slurry is shaped by mould pressing or extrusion or injection molding after filtering and drying so as to obtain a hard alloy end mill blank. The hard alloy end mill prepared by using a rod material is especially suitable for various types of heat-resistant steel, super-alloy steel and other materials, the high-temperature hardness and the wear resistance are good, and the service life of a cutter is prolonged.

Description

technical field [0001] The invention relates to the technical field of production of hard alloy rods, in particular to a preparation process for a novel hard alloy material used for processing end mills. Background technique [0002] With the vigorous development of aviation, aerospace, petroleum, chemical, metallurgy and food industries, stainless steel materials have been widely used, and stainless steel materials have high toughness, high thermal strength, low thermal conductivity, large plastic deformation during cutting, and severe work hardening. , cutting heat, heat dissipation and other reasons, resulting in high cutting temperature at the tip of the tool, severe chip adhesion to the cutting edge, and easy to produce built-up edge, which not only aggravates the wear of the tool, but also affects the roughness of the processed surface. In addition, since chips are not easy to curl and break, they will also damage the machined surface and affect the quality of the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05
Inventor 薛红剑
Owner 薛红剑
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