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Nano modified WC/Co cemented carbide material and manufacturing method thereof

A nano-modified material and cemented carbide technology, which is applied in the field of modified WC/Co cemented carbide materials and its manufacturing, can solve the problems of difficult control of grain growth in the sintering process, high requirements for process parameters, and complex preparation processes. , to achieve the effect of dense arrangement, low requirements on process parameters and simple process

Active Publication Date: 2009-03-11
无锡海韵新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to simultaneously improve the hardness and strength of WC / Co cemented carbide, and to overcome the complex preparation process, numerous precautions, high process parameter requirements and the need to improve the comprehensive performance of WC / Co cemented carbide. Renewal equipment, the defects of sharply increased cost, and the problem that powder metallurgy method is difficult to control the grain growth in the sintering process, and provide a nano-modified WC / Co cemented carbide material and its manufacturing method

Method used

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  • Nano modified WC/Co cemented carbide material and manufacturing method thereof
  • Nano modified WC/Co cemented carbide material and manufacturing method thereof
  • Nano modified WC/Co cemented carbide material and manufacturing method thereof

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specific Embodiment approach 1

[0012] Specific embodiment 1: The nano-modified WC / Co cemented carbide material in this embodiment is made of 0.005% to 3.00% nano-modified material and the balance of WC / Co cemented carbide by mass percentage; wherein WC / Co hard alloy The mass content of Co in the alloy is 3% to 30%; the particle size of the nano-modified material is 1-500nm; the nano-modified material is composed of component A, component B and / or component C, component A is a rare earth element, and component B It is a rare earth compound, and the component C is selected from TiC, TiN, TiCN, WC, B 4 C, BN, SiC and Si 3 N 4 .

[0013] In this embodiment, the nano-modified material is composed of two or more substances, and the relationship between the various components can be in any proportion.

[0014] In this embodiment, if component C is composed of two or more substances, the relationship between the components can be in any proportion.

specific Embodiment approach 2

[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the nano-modified WC / Co cemented carbide material is composed of 0.01% to 2.00% of nano-modified materials and the balance of WC / Co hard alloy by mass percentage. Made of quality alloy. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the nano-modified WC / Co cemented carbide material is composed of 0.1% to 1.00% nano-modified material and the balance of WC / Co hard alloy by mass percentage. Made of quality alloy. Others are the same as the first embodiment.

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Abstract

The invention discloses a nano-modified WC / Co hard alloy material and a method for manufacturing the same, which relate to a modified WC / Co hard alloy material and a method for manufacturing the same and avoids the problems of complicated preparation technology, high requirements for process parameters, updating of equipment, high cost and grain growing easily in the prior method for improving the comprehensive property. The nano-modified WC / cobalt hard alloy is made by nano-modified material and WC / cobalt alloy. The preparation method comprises the following: a step of mixing powder; a step of drying and screening; a step of mixing wax; a step of drying and screening; a step of press molding; and a step of vacuum sintering. Compared with the nano before modification, the hardness of the nano-modified WC / Co hard alloy material is increased to more than 1 HRA, the bending strength is increased by about 20 percent, the impact ductility is increased by about 40 to 50 percent, the elongation is increased by 20 to 40 percent, and the impact wear property is increased to more than 100 percent. The preparation method has a simple process and low requirements on process parameters, which compared with the powder metallurgy has the advantage of high ratio of property to price.

Description

technical field [0001] The invention relates to a modified WC / Co cemented carbide material and a manufacturing method thereof. Background technique [0002] Cemented carbide has high hardness and wear resistance, good elastic modulus, high compressive strength, good chemical stability and low thermal expansion coefficient; as a high-efficiency tool material and structural material, its application fields Continuous expansion has played an important role in promoting industrial development and scientific and technological progress. In particular, tungsten-cobalt cemented carbide, which has higher hardness, toughness and excellent wear resistance compared with other cemented carbides, is widely used in metal cutting, metal forming tools, mining drilling and wear-resistant parts. [0003] The bottleneck that limits the comprehensive performance of cemented carbide is the contradiction between hardness and strength (that is, the contradiction between wear resistance and toughne...

Claims

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Application Information

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IPC IPC(8): C22C29/10C22C1/05
Inventor 王铀迟逞
Owner 无锡海韵新材料科技有限公司
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