Hot work tool steel
A specifically composed hot work tool steel with controlled vanadium carbides and optimized manufacturing enhances wear resistance and weldability, addressing the limitations of existing steels in demanding applications.
JP7869151B2Active Publication Date: 2026-06-02UDDEHOLMS AB
Patent Information
- Authority / Receiving Office
- JP Β· JP
- Patent Type
- Patents
- Current Assignee / Owner
- UDDEHOLMS AB
- Filing Date
- 2021-06-11
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing matrix-type hot work tool steels suffer from limited wear resistance, particularly in demanding applications like hot forging, die casting, and hot extrusion, requiring expensive repairs and special welding procedures due to poor weldability.
Method used
A hot work tool steel with a specific composition and manufacturing process, including elements like C, Si, Mn, Cr, Mo, V, and controlled vanadium carbides, ensuring high hardness, toughness, and weldability without preheating, with adjusted hardness through austenitization and tempering.
Benefits of technology
The steel exhibits improved wear resistance, high hardness retention, and excellent weldability, extending tool life and reducing maintenance costs in demanding applications.
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Smart Images
Figure 0007869151000001 
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Abstract
The present invention relates to a matrix-type hot work tool steel with improved wear resistance during use in demanding applications, particularly for hot forging, die casting and hot extrusion applications. It is also suitable for hot pressing, especially for hot pressing of advanced high strength steels (AHSS), and has high hot wear resistance. The hot work tool steel according to the invention has a composition as defined in the independent claim.
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