High temperature carburizing process for different media quenched gear steels
By optimizing the high-temperature carburizing process using different quenching media, the problem of excessively high hardness and poor toughness in the center of the high-temperature carburizing process for heavy-duty gear steel was solved. This resulted in improved core toughness and maintained surface hardness, thus improving the overall performance of heavy-duty gears.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHU TIANDI COAL MINING EQUIP CO LTD
- Filing Date
- 2023-12-06
- Publication Date
- 2026-07-24
AI Technical Summary
The existing high-temperature carburizing process for heavy-duty gear steel has problems such as long process cycle, high energy consumption, high labor intensity, and high core hardness and poor toughness after quenching. Existing improvement methods have increased the complexity of the process and the cost of raw materials.
Different media quenching processes, including a combination of oil cooling and air cooling, were employed to reduce the martensite content in the core and increase the bainite content. The carburizing heat treatment process was optimized through finite element simulation to control grain growth and maintain the surface martensite structure.
Without increasing the process flow and cost, it significantly improves the toughness of the gear steel core, reduces the core hardness, and maintains high surface hardness, thus improving the overall performance.
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Abstract
Citation Information
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