Hard alloy blade and preparation method thereof

A technology of carbide inserts and tools, applied in metal processing equipment, turning equipment, manufacturing tools, etc., can solve the problem of low versatility of cutting inserts, achieve excellent edge strength and impact resistance, achieve optimization, improve Effects of hardness and high temperature properties

Active Publication Date: 2016-09-21
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned literature only optimizes the performance of the cutting in...

Method used

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  • Hard alloy blade and preparation method thereof
  • Hard alloy blade and preparation method thereof
  • Hard alloy blade and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0049] A cemented carbide blade of the present invention, the blade model is WNMG080408. The cemented carbide blade includes a cemented carbide blade substrate and a coating provided on the cemented carbide blade substrate. See Table 1 and Table 2 for the matrix composition of the cemented carbide insert in this embodiment. 5.6wt.% (not including solid solution W and Cr) Co metal is used as the binding phase, WC and titanium-containing cubic phase compound are used as the hard phase, and the balance is WC. In the bonding phase, there are W and Cr elements in solid solution, and the solid solution content of Cr in the bonding phase is 3.2wt.% (Cr element accounts for the mass fraction of the bonding phase), and the Cr element is represented by Cr 3 C 2 Added in form, the W solid solution content is 5.6wt.% (the W element accounts for the mass fraction of the binder phase). The cemented carbide insert substrate has a surface structure lacking titanium-containing cubic phase c...

Embodiment 2

[0067] A cemented carbide blade of the present invention, the blade model is WNMG080408. The cemented carbide blade includes a cemented carbide blade substrate and a coating provided on the cemented carbide blade substrate. The matrix composition of the cemented carbide insert in this embodiment is shown in Table 1 and Table 2, 6.8wt.% Co metal is used as the binder phase, WC and titanium-containing cubic phase compound are used as the hard phase, and the balance is WC. In the bonding phase, there are W and Cr elements in solid solution, and the solid solution content of Cr in the bonding phase is 4.8wt.%, and the Cr element is represented by Cr 3 C 2 Form added, W solid solution content of 6.5wt.%. The cemented carbide insert substrate has a surface structure lacking titanium-containing cubic phase compounds whose average binder phase content is 1.7 times the nominal Co binder phase content, and the thickness of the surface structure is 20 μm. The average particle size of ...

Embodiment 3

[0074]A cemented carbide blade of the present invention, the blade model is WNMG080408. The cemented carbide blade includes a cemented carbide blade substrate and a coating provided on the cemented carbide blade substrate. The matrix composition of the cemented carbide insert in this example is shown in Table 1 and Table 2, 8.4wt.% Co metal is used as the binder phase, WC and titanium-containing cubic phase compound are used as the hard phase, and the balance is WC. W and Cr elements are dissolved in the binder phase, and the solid solution content of Cr in the binder phase is 6.8wt.%. The Cr element is represented by Cr 3 C 2 Form added, W solid solution content of 6.3wt.%. The cemented carbide insert substrate has a surface structure lacking titanium-containing cubic phase compounds with an average binder phase content of 1.8 times the nominal Co binder phase content, with a thickness of 20 μm. The average particle size of the titanium-containing cubic phase compound in t...

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Abstract

The invention discloses a hard alloy blade and a preparation method thereof. The hard alloy blade comprises a hard alloy blade basal body and a coating layer; the hard alloy blade basal body uses Co as a binding phase, and uses tungsten carbide and a titanium-contained cubic-phase compound as a hard phase; the solid solution is performed for a W element and a Cr element in the binding phase; the mass fraction of the W element in the binding phase is 2-10 wt.%; the mass fraction of the Cr element in the binding phase is 1-10 wt.%; the titanium-contained cubic-phase compound is a carbon-nitrogen compound containing one or two in a Ta element and a Nb element and a Ti element; and the grain distribution of tungsten carbide has a double-peak structure. The preparation method comprises batching, powder preparation by mixing, molding by pressing, sintering and preparation of a coating layer. The hard alloy blade has the advantages of high hardness, toughness and strength and excellent and stable cutting performance, and is high in generality, suitable for various processing fields, simple in preparation method and low in cost.

Description

technical field [0001] The invention relates to a cemented carbide blade, in particular to a cemented carbide coated blade with a non-uniform WC particle size distribution and a surface layer lacking a cubic phase gradient structure. Background technique [0002] The material for making metal cutting tools must have high high temperature hardness and wear resistance, have the necessary bending strength, impact toughness and chemical inertness, and good processability (cutting, forging and heat treatment, etc.), and not easily deformed. However, the higher the hardness of the material, the lower its toughness, that is to say, it is difficult to have both hardness and toughness of the material at the same time. The prior art uses non-uniform structure or gradient structure to improve the performance of cemented carbide. For example, the patent document US4277283 US patent document and CN1079179A Chinese patent document have disclosed a cemented carbide substrate lacking a cubi...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C1/05B22F5/00B22F1/00B22F3/10B23B27/14
CPCB22F1/0003B22F3/101B22F5/00B22F2005/001B22F2999/00B23B27/14C22C1/051C22C29/08B22F2201/20B22F2201/11
Inventor 谢文左锐温光华陈响明王社权
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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