【摘要】 分析了装甲车辆曲臂在试车试验时断裂的原因,探讨了该零部件在热处理过程中的硬度变化规律,获得了该零部件在淬火时淬火油温变化与金相组织及硬度的关系。试验结果表明,淬火油温>90℃时会导致热处理组织异常,使硬度低于设计要求。更多还原

【Abstract】 The cause for the rupture of the crank shaft on armored vehicles during trial run was analyzed.The rules of the hardness change in heat treatment for the part were discussed,and the relationship between oil temperature for quenching and metallurgical structure and hardness was obtained.The experimentation showed that it will lead to metallurgical structure abnormity and can′t meet the need of designation when the oil temperature for quenching is 90 ℃ or higher.更多还原