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30crmnsia gang bao bi chang tong re chu li gong yi gai jin ji fang bian xing cuo shi
Author(s): 
Pages: 57-58
Year: Issue:  2
Journal: Heat Treatment of Metals

Keyword:  防变形措施油淬火热处理工艺改进工件支撑杆技术要求飞机起落架淬火温度应力状态变形校正;
Abstract: <正> 30CrMaSiA钢薄壁支撑杆是飞机起落架的千斤顶备件,在高压应力状态下工作。其外形尺寸为:φ90_外×φ84_内×2500mm。硬度要求为HRC35~40、σ_b为1078~1274MPa和高屈强比,工件弯曲度小于0.40mm/m,孔径差小于0.15mm,工件淬火后不容许变形校正。对此,我们探讨了其热处理工艺及防变形措施,最终达到了各项技术要求。
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