A tungsten-titanium hard alloy and a method for manufacturing a finished product thereof

By optimizing the raw material ratio and preparation process of tungsten-titanium cemented carbide, the problems of uneven performance and high production cost of traditional tungsten-titanium cemented carbide materials have been solved, and high hardness, high toughness and low cost alloy preparation have been achieved.

CN122279346APending Publication Date: 2026-06-26XINJINGRUI TUNGSTEN STEEL (XIAMEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINJINGRUI TUNGSTEN STEEL (XIAMEN) CO LTD
Filing Date
2026-03-27
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional tungsten-titanium cemented carbide preparation technology suffers from problems such as fixed raw material ratios and insufficient sintering processes, resulting in uneven material properties, porosity, low production efficiency, and high costs.

Method used

By optimizing the raw material ratio, partially or completely replacing tungsten carbide with titanium carbide, and introducing grain inhibitors, precise batching, wet grinding, dry granulation, molding and low-pressure sintering steps are adopted to ensure the uniformity of alloy composition and the density of structure.

Benefits of technology

This significantly improved the alloy's hardness and fracture toughness, reduced production costs, increased production efficiency, and enhanced its wear resistance and impact resistance.

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Abstract

This invention discloses a tungsten-titanium cemented carbide and its manufacturing method, relating to the field of cemented carbide materials technology. Through specific raw material ratios and preparation processes, this invention achieves excellent properties such as a Rockwell hardness ≥81 HRA and fracture toughness ≥10 MPa・m¹ / ². This high hardness and good fracture toughness enable the alloy to exhibit better wear resistance and impact resistance when preparing various cemented carbide products, thereby extending the service life of the finished products and improving production efficiency. Simultaneously, its preparation method, through precise batching, wet grinding, drying granulation, molding, and low-pressure sintering steps, ensures the uniformity of the alloy composition and the compactness of the structure. In particular, the introduction of argon gas to pressurize to 1 MPa~6 MPa during low-pressure sintering effectively promotes densification during the sintering process, further enhancing the overall performance of the alloy. This optimized preparation process not only improves production efficiency but also reduces production costs, providing strong support for industrial production.
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