Quinary P type hard alloy

A technology of cemented carbide and hard phase, which is applied in the field of five-element P-type cemented carbide, which can solve the problems of high efficiency, short tool life and low efficiency in the rough machining of large alloy steel forgings in the heavy machinery industry, so as to improve cutting efficiency , long tool life, good red hardness effect

Active Publication Date: 2009-11-18
ZHEJIANG HENGCHENG CEMENTED CARBIDE
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, hard alloy rough machining of large steel forgings is easy to hit the knife, the efficiency is low and the tool life is short, and a 5-yuan P-type hard alloy is provided, and the product has high Excellent bending strength and impact resistance, ideal tool life, and can also improve processing efficiency, thus solving the problem of rough machining of large alloy steel forgings and the bottleneck problem of improving efficiency in the heavy machinery industry

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  • Quinary P type hard alloy

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Embodiment Construction

[0016] The technical solutions of the present invention will be described in further detail below with reference to the drawings and examples, but the protection scope of the present invention is not limited thereto.

[0017] refer to figure 1 , a five-element P-type cemented carbide, composed of the following components in weight percentage: hard phase titanium carbide 16%, tantalum carbide 8%, niobium carbide 6%, cobalt 10%, lanthanum 0.006%, and The amount is tungsten carbide.

[0018] A preparation method of the five-element P-type cemented carbide, comprising the steps of: mixing the components and then wet-grinding them through an inclined wet mill, unloading after wet-milling; adding wax and granulating by spray drying, Automatic press molding, vacuum sintering, tempering treatment, that is, the sintered product is obtained.

[0019] In the wet milling process: the wet milling time is 60 hours, the pellet ratio is 5:1, and the wet milling medium is absolute ethanol. ...

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Abstract

The invention relates to a quinary P type hard alloy which comprises the components with the weight percentage: 16% of hard phase titanium carbide, 8% of tantalous carbide, 6% of niobium carbide, 10% of cobalt, 0.006% of lanthanum and the rest of hard phase tungsten carbide. The product of the invention has high flexure strength, good impact strength and red hardness; the hard alloy can be used for rough machining large scale alloy forgeable piece without forging a knife when in use, so as to appropriately improve the processing efficiency; furthermore, the knife has long service life.

Description

(1) Technical field [0001] The invention relates to a five-element P-type hard alloy. (2) Background technology [0002] Large alloy steel forgings such as heavy equipment such as hydropower, thermal power, nuclear power, petroleum cracking and coal liquefaction. Due to the large amount of rough machining and difficult machining of large alloy forgings, it is the bottleneck of the heavy equipment manufacturing industry. The bottleneck in the processing of heavy equipment is mainly caused by the following characteristics: First, after the rough casting of large alloy steel forgings It is freely forged on a large hydraulic press, and the weight of a single piece is tens of tons or hundreds of tons. The precision of forging cannot be compared with that of small forgings. The cutting workload of forgings is very large. Second, during the natural and slow cooling process of large alloy steel forgings after forging, the hardness of the surface layer is uneven due to different ori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08
Inventor 金益民吴晓娜杨明文
Owner ZHEJIANG HENGCHENG CEMENTED CARBIDE
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