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Hard alloy product, preparation method thereof and device for preparing hard alloy product

A cemented carbide and product technology, applied in the field of powder metallurgy, can solve the problems of high cost, high difficulty and low quality, and achieve the effects of low production cost, fast forming speed and uniform texture

Active Publication Date: 2017-11-07
成都岷江精密刀具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, an object of the present invention is to provide a method for preparing cemented carbide products to solve the problems of high difficulty, high cost and low quality in processing special-shaped cemented carbide products in the existing technology

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  • Hard alloy product, preparation method thereof and device for preparing hard alloy product

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Effect test

Embodiment 1

[0049] The preparation method of the cemented carbide product of the present embodiment may further comprise the steps:

[0050] (1) Carbide powder and binding agent are carried out kneading, make feed, wherein, cemented carbide powder accounts for 93wt% of feed, and cemented carbide powder comprises: tungsten carbide powder of 88wt% and 12wt% The cobalt powder, the binder accounts for 7wt% of the feed, and the binder includes: 69wt% of paraffin, 25wt% of ethylene-vinyl acetate copolymer, 5wt% of high-density polyethylene and 1wt% of surface active hard Fatty acid; the average particle size of the tungsten carbide powder is 0.6 μm, and the average particle size of the cobalt powder is 0.7 μm.

[0051] (2) The feed is placed in the extruder so that the feed is extruded through the nozzle of the numerically controlled machine tool connected to the extruder, and the extruded feed is controlled by the numerically controlled machine tool to accumulate in layers to obtain cemented c...

Embodiment 2

[0055] The preparation method of the cemented carbide product of the present embodiment may further comprise the steps:

[0056] (1) Mixing cemented carbide powder and binder to prepare feed, wherein cemented carbide powder accounts for 94wt% of the feed, and cemented carbide powder includes: 94wt% tungsten carbide powder and 6wt% The cobalt powder, the binder accounts for 6wt% of the feed, and the binder includes: 79wt% of paraffin wax, 15wt% of ethylene-vinyl acetate copolymer, 5wt% of high-density polyethylene and 1wt% of surface active hard Fatty acid; the average particle size of the tungsten carbide powder is 1.0 μm, and the average particle size of the cobalt powder is 1.2 μm.

[0057] (2) The feed is placed in the extruder so that the feed is extruded through the nozzle of the numerically controlled machine tool connected to the extruder, and the extruded feed is controlled by the numerically controlled machine tool to accumulate in layers to obtain cemented carbide pr...

Embodiment 3

[0061] The preparation method of the cemented carbide product of the present embodiment may further comprise the steps:

[0062] (1) Mixing cemented carbide powder and binder to prepare feed, wherein cemented carbide powder accounts for 95wt% of the feed, and cemented carbide powder includes: 90wt% tungsten carbide powder and 10wt% The cobalt powder, the binder accounts for 5wt% of the feed, and the binder includes: 72wt% of paraffin, 25wt% of ethylene-vinyl acetate copolymer, 2wt% of high-density polyethylene and 1wt% of surface active hard Fatty acid; the average particle size of the tungsten carbide powder is 0.8 μm, and the average particle size of the cobalt powder is 1.0 μm.

[0063] (2) The feed is placed in the extruder so that the feed is extruded through the nozzle of the numerically controlled machine tool connected to the extruder, and the extruded feed is controlled by the numerically controlled machine tool to accumulate in layers to obtain cemented carbide produ...

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Abstract

The invention discloses a hard alloy product, a preparation method thereof and a device for preparing the hard alloy product, and belongs to the field of powder metallurgy. The preparation method of the hard alloy product includes the steps that hard alloy powder and an adhesion agent are mixed and feedstock is prepared; the feedstock is stored in an extruding machine so that the feedstock can be extruded out from a nozzle of a numerical control machine tool which is connected with the extruding machine; and the numerical control machine tool controls the extruded feedstock to be layered-deposited, and the hard alloy product is prepared. The device for preparing the hard alloy product comprises the extruding machine and the numerical control machine tool; the numerical control machine tool comprises a heatable nozzle, the nozzle is the executive component of the numerical control machine tool, and connected with a driving component of the numerical control machine tool; and a material outlet of the extruding machine is connected with the nozzle through a material pipe. According to the hard alloy product, the preparation method thereof and the device for preparing the hard alloy product, a die does not need to be manufactured, complex shapes can be formed, the density of each part of the product is even, deformation is small, and the comprehensive property is high.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a cemented carbide product, a preparation method thereof and a device for preparing the cemented carbide product. Background technique [0002] Cemented carbide has a series of advantages such as high hardness, high strength, wear resistance, corrosion resistance, high temperature resistance and small expansion coefficient. It is an indispensable tool material for metal processing, mining, oil drilling, national defense and military industries. With the wide application of cemented carbide, there are more and more cemented carbide products with complex shapes, usually with holes, grooves, and variable cross-sections. Therefore, the traditional cemented carbide production method is greatly limited in shape, and because of the high hardness of cemented carbide, it is difficult to meet the shape requirements with ordinary machining, and laser and electric discharge machini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F1/00
CPCB22F3/227B22F2998/10B22F1/103B22F1/10B22F3/10B22F3/1021B22F3/04
Inventor 赵涛
Owner 成都岷江精密刀具有限公司
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