Metal ceramic cutting tool material and preparation method thereof

A cutting tool and cermet technology, applied in the field of cermet cutting tool materials and their preparation, can solve the problems of difficult process control, poor sintered body uniformity, difficult high-performance sintered body, etc., to achieve easy control of the preparation process, increase pressure The effect of solid density and stable yield rate

Active Publication Date: 2012-12-19
湖北麦拓新材料科技股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the production status of domestic cemented carbide and cermet knives is not optimistic. The characteristic shown is that the production quality is unstable and cannot be compared with imported blades.
The overall performance of the metal-ceramic knives being tested in the Chinese market is obviously lower than that of the commonly used metal-ceramic knives in the Japanese market, and the product performance is unstable, especially the strength and toughness is poor, so the metal-ceramic knives are basically not used in practice
At present, most of the high-end cutting tools in China's cutting tool market rely on imports, and the cost of imported cutting tools is quite expens

Method used

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  • Metal ceramic cutting tool material and preparation method thereof
  • Metal ceramic cutting tool material and preparation method thereof
  • Metal ceramic cutting tool material and preparation method thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the examples, and the present invention is not limited within the scope of the examples.

[0027] The batching scheme of Examples 1 to 9 is carried out by using the original powder composition scheme (Table 1) and the particle size optimization combination scheme of each component (Table 2) in the present invention. After the batching is completed, the conventional wet mixing process is used to fully mix in the mixing tank, and it can be made into powder after drying. Pressing and forming under a certain pressure (160Mpa), the pressing curve is as follows figure 1 shown. The green compact is placed in a vacuum furnace for early high-vacuum sintering, and the vacuum degree is kept at 10~10°C below 400°C. -2 Between Pa, the temperature is 400°C~1400°C, and the vacuum degree is kept at 10 -2 10 -3 Pa, then rush into argon for low-pressure sintering, the sintering temperature is listed in Table 3...

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Abstract

The invention discloses a metal ceramic cutting tool material and a preparation method thereof. The material is prepared from the following powdery raw materials in percentage by weight: 13 to 22 percent of Ni, 10 to 16 percent of Mo, less than or equal to 1.0 percent of Cr2C3, 0.8 to 1.5 percent of C, 5 to 12 percent of WC and the balance of Ti(C,N). The particle sizes of particles of the powdery raw materials for the metal ceramic cutting tool material are matched in an optimal combination way. High-vacuum sintering is adopted in early stages of a preparation process, and low-pressure sintering is adopted within a sintering temperature range. The obtained metal ceramic cutting tool material is high in yield, stable in quality and high in comprehensive performance.

Description

technical field [0001] The invention belongs to the fields of mechanical processing and powder metallurgy, and in particular relates to a cermet cutting tool material and a preparation method thereof based on an optimized combination of particle sizes. Background technique [0002] Ti(C,N)-based cermet tools have attracted widespread attention at home and abroad because of their high hardness, wear resistance, red hardness, excellent chemical stability and extremely low friction coefficient. They are mainly used in steel and cast iron. High-speed finishing. Ti(C,N)-based cermets have shown great potential as an upgraded alternative to traditional WC-Co cemented carbides. Its high-temperature hardness is better than that of high-speed steel and WC-based cemented carbide, and its toughness is better than that of ceramic and superhard material tools. It also just fills the gap between WC-based cemented carbide tools and ceramic tools in the processing range. [0003] In recen...

Claims

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Application Information

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IPC IPC(8): C22C29/04C22C30/00C22C32/00C22C1/05
Inventor 张大勇石增敏
Owner 湖北麦拓新材料科技股份有限公司
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