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Hard alloy containing nickel aluminide and boron copper base and preparation method thereof

A cemented carbide and nickel aluminide technology, which is used in cemented carbide products and their manufacturing fields, can solve problems such as unsatisfactory plasticity and toughness, and achieve the effects of improving high-temperature service performance, inhibiting intergranular fracture, and improving plasticity.

Inactive Publication Date: 2013-07-03
ZHUZHOU TELIYA CARBIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is mainly aimed at the insufficient plasticity and toughness of existing aluminum-nickel alloys at room temperature, and proposes an aluminum-nickel-based alloy with better plasticity and toughness at room temperature and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of cemented carbide containing nickel aluminum and boron copper base, with tungsten carbide as the matrix, in the tungsten carbide-based cemented carbide with tungsten carbide as the matrix material, adding a part of Ni 3 Al, and adding a small amount of additives such as boron and copper at the same time, through high temperature sintering, a low-cost high-performance (high-temperature performance) tungsten carbide and cemented carbide materials are obtained. The main feature of this material is that in the process of mixing, a part of nickel and aluminum is used to replace cobalt, and trace elements boron and copper are added to change the crystal structure and thus change the Ni 3 Al has defects with lower room temperature plasticity and toughness, so as to achieve room temperature effects such as cobalt bonding. Described tungsten carbide is the weight percent ratio of the tungsten carbide-based cemented carbide composition of the matrix material as follows: ...

Embodiment 2

[0025] A kind of cemented carbide containing nickel aluminum and boron copper base, with tungsten carbide as the base, in the tungsten carbide base cemented carbide with tungsten carbide as the base material, with a part of Ni 3 Al replaces cobalt, and at the same time adds a small amount of additives such as boron and copper, and obtains a low-cost and high-performance (high-temperature performance) tungsten carbide and cemented carbide material through high-temperature sintering. The main feature of this material is that in the process of mixing, a part of nickel and aluminum is used to replace cobalt, and trace elements boron and copper are added to change the crystal structure and thus change the Ni 3 Al has defects with lower room temperature plasticity and toughness, so as to achieve room temperature effects such as cobalt bonding. Described tungsten carbide is the weight percentage ratio of the tungsten carbide-based cemented carbide composition of the base material as ...

Embodiment 3

[0032] A kind of cemented carbide containing nickel aluminum and boron copper base, with tungsten carbide as the base, in the tungsten carbide base cemented carbide with tungsten carbide as the base material, with a part of Ni 3 Al replaces cobalt, and at the same time adds a small amount of additives such as boron and copper, and obtains a low-cost and high-performance (high-temperature performance) tungsten carbide and cemented carbide material through high-temperature sintering. The main feature of this material is that in the process of mixing, a part of nickel and aluminum is used to replace cobalt, and trace elements boron and copper are added to change the crystal structure and thus change the Ni 3 Al has defects with lower room temperature plasticity and toughness, so as to achieve room temperature effects such as cobalt bonding. Described tungsten carbide is the weight percent ratio of the tungsten carbide-based cemented carbide composition of the base material as fol...

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PUM

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Abstract

The invention relates to a hard alloy containing nickel aluminide and bornon copper base and a preparation method thereof. A part of Ni3Al is added into a WC-based hard alloy using wolfram carbide (WC) as a substrate material to replace cobalt in the alloy, simultaneously additives such as trace amount of boron copper and the like are added into the alloy and a wolfram carbide and hard alloy material with low cost and high performance (high temperature performance) is obtained by high temperature sintering. The WC-based hard alloy using wolfram carbide (WC) as the substrate material comprises the following ingredients in percentage by weight: 70 to 85 percent of WC, 14 to 25 percent of Ni3Al, 0.05 to 0.08 percent of B, 0.05 to 0.08 percent of Cu and the balance of unavoidable trace impurities. The preparation method of the hard alloy comprises the following steps: proportioning WC, Ni3Al, B and Cu in percentage by weight; proportioning the usage amount of the powder raw materials and pouring the power raw materials into a wet grinding mill to carry out ball-milling in batches until WC powder, Ni3Al powder, B powder, C powder and the like are uniformly distributed; and then carrying out wet grinding, mixing, compressing and sintering to obtain a finished product.

Description

technical field [0001] The invention relates to a cemented carbide product and a manufacturing method thereof, in particular to a cemented carbide containing nickel aluminum and boron-copper base and a manufacturing method thereof, which are mainly used to replace tungsten carbide-based cemented carbide materials to manufacture various High carbide products. Background technique [0002] The existing tungsten carbide-based cemented carbide materials are mainly composed of matrix tungsten carbide and binder phase cobalt. When cobalt-bonded cemented carbide is used at high temperature, its hardness, strength and other indicators are reduced by 50%-90% compared with normal temperature, and the higher the temperature, the lower the performance. In addition, the shortage of cobalt resources has resulted in high raw material cost prices. How to further improve the mechanical properties of cemented carbide and reduce production costs has become a problem that major manufacturers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05
Inventor 刘光耀
Owner ZHUZHOU TELIYA CARBIDE
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