一种用于中空锚杆的无缝钢管及其强度的调控方法
By establishing a physical metallurgical model with consistent dimensions, the ferrite grain size of seamless steel pipes can be precisely controlled, solving the problem of strength control of seamless steel pipes relying on experience. This achieves high-precision strength control and plasticity matching, shortens the production cycle, and reduces costs.
CN121976030BActive Publication Date: 2026-07-17CHINA COAL SCIENCE & TECHNOLOGY (TIANJIN) ROCK FORMATION INTELLIGENT CONTROL TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA COAL SCIENCE & TECHNOLOGY (TIANJIN) ROCK FORMATION INTELLIGENT CONTROL TECHNOLOGY CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
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Figure CN121976030B_ABST
Abstract
本申请提供了一种用于中空锚杆的无缝钢管及其强度的调控方法，将合金钢圆钢加热后热穿孔制成中空管坯；将中空管坯进行球化退火处理后冷却得到的第一处理钢管；其中根据球化退火晶粒尺寸模型计算第一处理钢管的铁素体晶粒尺寸为D1；将第一处理钢管冷精轧成型并清洗得到第二处理钢管；根据冷变形晶粒细化模型计算第二处理钢管的铁素体有效晶粒尺寸为Ddef；将第二处理钢管进行再结晶退火后得到无缝钢管；根据再结晶晶粒演变模型计算无缝钢管的铁素体晶粒尺寸为D2；再根据强度模型计算无缝钢管的屈服强度为Rp0.2；本申请实现对无缝钢管屈服强度的逆向设计同时保证无缝钢管具有良好的塑性。
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