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A Synthetic Process of High Temperature Corrosion Shock Resistant Alloy

A technology of high temperature corrosion resistance and synthesis process, applied in the field of cemented carbide processing, can solve the problem of not being able to guarantee impact resistance, etc., and achieve the effects of good high temperature oxidation corrosion resistance, good wear resistance, good service strength and impact toughness

Active Publication Date: 2016-01-20
ZHEJIANG HENGCHENG CEMENTED CARBIDE CO LTD
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Problems solved by technology

[0003] The present invention provides a high temperature corrosion resistant impact alloy synthesis process, aiming at solving the problem in the prior art that good impact resistance cannot be guaranteed on the basis of good wear resistance

Method used

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Embodiment Construction

[0014] A synthesis process of a high-temperature corrosion-resistant shock alloy, comprising the following process steps in sequence:

[0015] A. Mix 48% tungsten carbide powder with a particle size of 2.0 to 3.0 μm, 12.8% cobalt powder with a particle size of 1.20 to 1.30 μm, and 8% carbonyl nickel powder with a particle size of 1.20 to 1.30 μm by mass percentage, and grind for 6 hours; cobalt The optimum particle size of powder is 1.25μm, and the optimum particle size of carbonyl nickel powder is 1.25μm;

[0016] B. Then add 1.2% chromium carbide with a particle size of 1.0 to 1.2 μm and 30% tungsten carbide powder with a particle size of 20 to 30 μm to the slurry after grinding in step A, and use a tilting ball mill to carry out wet grinding for 24 hours;

[0017] C. Filter the chromium carbide slurry added in step B with a 500-mesh screen; for removing impurities

[0018] D, the slurry after filtering in the C step adopts vacuum-drying and wax-integrated process to prepar...

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Abstract

The invention relates to the field of hard alloy processing, and particularly relates to a high-temperature corrosion resistant impact alloy synthesis process, aiming at solving the problem that the prior art can not guarantee relatively good impact resistance based on relatively good wear resistance. In the process provided by the invention, the tungsten carbide powder of medium and coarse particles is added, and the high-temperature corrosion resistant impact alloy is synthesized through the processes of common grinding, wet grinding, filtering, drying, secondary filtering, pressure sintering and the like. In the process provided by the invention, by adopting the tungsten carbide powder of medium and coarse particles, the impact alloy has perfect use strength and impact toughness at high temperature over 1,000 DEG C and also has good wear resistance and high-temperature oxidation corrosion resistance, the product has good stability, and the service life is prolonged by 1.5-2 times.

Description

technical field [0001] The invention relates to the field of hard alloy processing, in particular to a synthesis process of a high-temperature corrosion-resistant impact alloy. Background technique [0002] The existing formula of HQ22 high-temperature corrosion-resistant impact alloy uses medium-grained tungsten carbide powder, which pays attention to the wear resistance of the product, but the impact resistance is not very ideal, and the impact resistance is a key factor for glass stamping mills. The most important index; at the same time, the existing alloy has weak resistance to high-temperature oxidation, so that the alloy is severely corroded by heat when it is working in a flame, and its service life is reduced. Contents of the invention [0003] The invention provides a high-temperature corrosion-resistant impact alloy synthesis process, aiming to solve the problem in the prior art that better impact resistance cannot be guaranteed on the basis of better wear resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10C22C29/08
Inventor 郭伟波杨雪金益民吴晓娜
Owner ZHEJIANG HENGCHENG CEMENTED CARBIDE CO LTD
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