Hard alloy and preparation method thereof

A cemented carbide and alloy technology, applied in the field of cemented carbide, can solve the problems such as the unsatisfactory precipitation of product elements, and achieve the purpose of inhibiting aggregation and recrystallization growth, grain refinement, carburization and/or decarburization defect improvement Effect
CN102766796AActive Publication Date: 2012-11-07ZIGONG CEMENTED CARBIDE CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ZIGONG CEMENTED CARBIDE CORP
Publication Date
2012-11-07

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Abstract

The invention discloses a new hard alloy material and a preparation method thereof. The hard alloy is prepared from the following components in percentage by weight: 9.0-10.0% of Ni powder, 0.8-1.2% of Cr powder, 0.2-0.3% of Cr3C2 powder and the balance of WC (wolfram carbide) powder. By adopting the proportional hard alloy mixture and the compound addition mode of Cr and Cr3C2, the carburization and / or decarburization defect of the product can be improved, thereby enhancing the corrosion resistance of the binding phase Ni and the hard phase WC, and refining the alloy grains. The hardness, wear resistance and corrosion resistance of the alloy are enhanced. The hard alloy product prepared by the method disclosed by the invention can satisfy the requirements for long-term water flow erosion endurability and low metallic element precipitation amount.
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Description

[0001] technical field

[0002] The invention relates to a hard alloy, in particular to a corrosion-resistant hard alloy material for a drinking water system and a preparation method thereof. Background technique

[0003] There are many developments for corrosion-resistant hard alloy materials, such as prior art 1: the application date is 1989.12.20, the applicant is: Shanghai University of Technology, the inventor is Sui Yongjiang; Wang Xingqing; He Baoshan; Yu Zhongsun, the patent number is CN89109499.7 , discloses a kind of material that is used to manufacture the friction pair of corrosion-resistant mechanical seals and other wear-resistant and wear-resistant parts. The material is composed of WC-Ni-( Ce+La) is a cemented carbide, which has good corrosion resistance and wear resistance in acidic and alkaline media. Existing technology 2: The application date is 1989.12.20, the applicant is Shanghai Institute of Materials, the inventors are Lin Chunfang; Du Yuguo; Sun Da...

Claims

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