A high-hardness and high-strength cemented carbide saw blade and its processing method

A hard alloy, high-strength technology, applied in metal processing equipment, metal sawing equipment, manufacturing tools, etc., can solve the problem that the material cannot meet the requirements of high strength and high hardness, and achieve low damage rate, good compactness, The effect of reducing brittleness

Active Publication Date: 2019-01-08
ZUNYI ZHONGBO CEMENTED CARBIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a cemented carbide sawtooth sheet to solve the problem that the materials used in the currently manufactured cemented carbide sawtooth sheets cannot meet the requirements of high strength and high hardness

Method used

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Embodiment Construction

[0020] The present invention will be described in further detail below by means of specific embodiments:

[0021] This program provides a high-hardness and high-strength cemented carbide sawtooth sheet, which includes the components and the mass percentage of each component: tungsten carbide 94~97.5%, cobalt powder 2.5~5.5%, additives 0.3~0.7%, additives are Tantalum carbide, chromium carbide and vanadium carbide, the mass ratio of tantalum carbide: chromium carbide: nickel carbide is 2:1:1. The particle size of tungsten carbide is 0.2~0.4μm, the particle size of cobalt powder is 0.4~0.8μm, and the particle size of additive is 0.2~0.6μm.

[0022] The proposal also provides a processing method for a high-hardness and high-strength cemented carbide sawtooth sheet, which includes the following steps:

[0023] Step 1. Processing tungsten carbide: mix tungsten carbide with additives evenly, carbonize and reduce at a high temperature of 1800°C;

[0024] Step 2. Ball milling: Put t...

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PUM

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Abstract

The invention discloses a high-hardness and high-strength hard alloy saw blade and a processing method thereof in the field of alloy processing. The hard alloy saw blade comprises the components of tungsten carbide, cobalt powder, tantalum carbide, chromium carbide and vanadium carbide. The processing method comprises the specific steps of step I, processing of tungsten carbide: carrying out carbonization and reduction on tungsten carbide and an additive at the high temperature; step II, ball milling: carrying out ball milling on tungsten carbide and cobalt powder with cylindrical grinding bodies; step III, addition of a forming agent: adding the PEG forming agent; step IV, introduction of a protective gas: introducing nitrogen or argon as the protective gas; step V, punch forming: carrying out punch forming at 30 to 100 tons of pressure; step VI, sintering: carrying out sintering at the temperature of 1400 to 1450 DEG C and the pressure of 10 MPa; and step VII, surface treatment. The hard alloy saw blade processed through the scheme is good in stability, high in size precision, good in compactness and low in damage rate, hardness and strength of a product are improved, brittleness is reduced, and the hard alloy saw blade is more suitable for cutting high-hardness profiles.

Description

technical field [0001] The invention belongs to the field of alloy processing, and in particular relates to a high-hardness and high-strength cemented carbide saw blade and a processing method thereof. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance. [0003] Cemented carbide is mainly composed of high-hardness refractory metal carbide (WC, TiC) micron-sized powder, with cobalt (Co) or nickel (Ni), molybdenum (Mo) as binder, in a vacuum furnace or hydrogen Powder metallurgy products sintered in a reduction furnace. The matrix of cemented carbide consists of two parts: one part is the hardening phase; the other part is the bonding metal. The hardening pha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05B23D65/00
CPCB23D65/00C22C1/051C22C29/08
Inventor 稽建斌
Owner ZUNYI ZHONGBO CEMENTED CARBIDE
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