论文部分内容阅读
车钩的钩体和钩舌是车钩最主要的受力件,而且都是几何形状复杂的铸件,由于铸件在金属冶炼、铸造、热处理以及实际运用中都不可避免地要产生某些宏观的缺陷或裂纹。这些缺陷或裂纹在运用中受随机的交变
The hook body and the knuckle of the coupler are the main force-bearing parts of the coupler, and all are the castings with complex geometrical shapes. As the castings inevitably have some macro-defects in the metal smelting, casting, heat treatment and practical application or crack. These defects or cracks in the use of random changes