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A hard alloy cutter material and preparation method thereof

A cutting tool material and cemented carbide technology, applied in the field of cemented carbide cutting tool material and its preparation, to achieve the effect of improving sharpness and improving sharpness

Active Publication Date: 2018-09-25
GUANGDONG XIANGLU TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing cemented carbide material manufacturing technology has the phenomenon of "the contradictory relationship between high strength and high hardness of cemented carbide, and the contradictory relationship between high wear resistance and high toughness"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The ingredients are 1.0% yttrium oxide Y 2 o 3 Carbide (WC), 10% ultrafine cobalt powder (Co), 40nm nanoscale titanium nitride (TiN) powder 0.05%; 0.15% ultrafine tantalum carbide TaC-tungsten carbide (WC) solid solution powder, 0.6% Vanadium carbide VC + chromium carbide Cr 3 C 2 (Where vanadium carbide VC and chromium carbide Cr 3 C 2 The mass ratio is 1:2.5) powder growth inhibitor, and the rest is carbide (WC) (particle size 0.8um). The ball milling medium is absolute alcohol. The bench-top stirring ball mill is used for the experiment. The ball milling time is 5 hours, and the ball-to-material ratio is 5:1. ; and then through drying, mixing glue, pressing, pressure sintering, grinding and other processes, the final tool is made. The hardness of the material is HRA92.1, and the material density is 14.40 g / cm3.

[0026] As a commercially available comparison material, milling cutters according to the prior art were also prepared, one of which was made of 10% co...

Embodiment 2

[0032] The ingredients are 0.3% yttrium oxide Y 2 o 3 Carbide (WC), 10% ultrafine cobalt powder (Co), 40nm nanoscale titanium nitride (TiN) powder 0.03%; 0.1% ultrafine tantalum carbide TaC-tungsten carbide (WC) solid solution powder, 0.5% Vanadium carbide VC + chromium carbide Cr 3 C 2 , (where vanadium carbide VC and chromium carbide Cr 3 C 2 The mass ratio is 1:2.5) powder growth inhibitor, and the rest is carbide (WC) (particle size 0.8um). The ball milling medium is absolute alcohol. The bench-top stirring ball mill is used for the experiment. The ball milling time is 5 hours, and the ball-to-material ratio is 5:1. ; and then through drying, mixing glue, pressing, pressure sintering, grinding and other processes, the final tool is made. The hardness of the material is HRA91.7, and the material density is 14.41g / cm3.

[0033] As a commercially available comparison material, a milling cutter according to the prior art is also prepared. One of the milling cutters is ma...

Embodiment 3

[0039] The ingredients are 0.6% yttrium oxide Y 2 o 3 Carbide (WC), 10% ultrafine cobalt powder (Co), 40nm nanoscale titanium nitride (TiN) powder 0.07%; 0.2% ultrafine tantalum carbide TaC-tungsten carbide (WC) solid solution powder, 0.7% (vanadium carbide VC + chromium carbide Cr 3 C 2 , in which vanadium carbide VC and chromium carbide Cr 3 C 2 The mass ratio is 1:2.5) powder growth inhibitor, the rest is carbide (WC) (particle size 0.8um) the ball milling medium is anhydrous alcohol, the bench-top stirring ball mill is used for the experiment, the ball milling time is 5 hours, and the ball-to-material ratio is 5:1 ; and then through drying, mixing glue, pressing, pressure sintering, grinding and other processes, the final tool is made. The hardness of the material is HRA92.2, and the material density: 14.42 g / cm3.

[0040] As a commercially available comparison material, a milling cutter according to the prior art is also prepared. One of the milling cutters is made ...

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Abstract

A hard alloy cutter material and a preparation method thereof are disclosed. The method comprises the steps of: weighing nanometer yttrium oxide, titanium nitride, a tantalum carbide-tungsten carbidesolid solution, cobalt, vanadium carbide-chromium carbide mixture and tungsten carbide; performing ball milling for 5-8 h by adopting absolute alcohol as a ball milling medium, with the ball-materialratio being 5-8:1; and then performing drying, glue blending, pressing, pressure sintering, grinding and other steps to finally obtain a cutter. Superfine carbide (WC) containing rare earth element yttrium is adopted, and fine-grain spherical cobalt powder is adopted as an adhesive phase to produce a novel hard alloy, and alloy toughness and cutter blade sharpness are greatly improved.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a cemented carbide tool material and a preparation method thereof. technical background [0002] Carbide (WC) + Co hard joint venture rotary cutting tools such as PCB micro-drilling and micro-milling, milling cutters, and solid drills are used for titanium alloy composite materials and high-temperature applications in the manufacturing industries of information and communication equipment, aerospace, automobiles, and molds. When alloys, various thermal spraying (welding) materials, hardened steel, high-alloy cast steel and other difficult-to-machine materials are precision-machined, in addition to requiring the hard alloy knife to keep the "knife tip" sharp and wear-resistant, it is also required to have Excellent impact resistance and toughness make the tool more impact-resistant and reduce chipping during the cutting process, thereby reducing the loss of the tool, imp...

Claims

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Application Information

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IPC IPC(8): C22C29/02C22C1/05
CPCC22C1/051C22C29/02
Inventor 刘少峰
Owner GUANGDONG XIANGLU TUNGSTEN