A synergistic optimized heat treatment method for GCr15 bearing steel bearing ring

Through full-process coupled design and parameter collaborative optimization, the problems of high hardness and dimensional stability of GCr15 bearing steel bearing rings were solved, and an efficient heat treatment process was achieved, which is suitable for the mass production of GCr15 bearing rings.

CN122405957APending Publication Date: 2026-07-17QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)
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Patent Information

Application Number
CN202610732603.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-26
Publication Date
2026-07-17

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Abstract

本发明属于热处理技术领域，提供了一种GCr15轴承钢轴承套圈的协同优化热处理方法，包括前处理与预热、奥氏体化处理、盐浴等温淬火、深冷处理和回火处理步骤，在所述深冷处理与回火处理过程中，基于深冷温度、深冷冷却速率、深冷保温时间、回火温度、回火升温速率以及回火保温时间进行温度协同、速率协同以及时间协同的参数匹配控制，在保证轴承套圈高硬度和硬度均匀性的基础上，降低残余奥氏体含量，同时形成清晰的、可工程化实施的工艺参数范围与优选窗口。
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