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日常生产及检测中发现,17型车钩钩体的钩尾牵引部位存在着不同程度的缩孔、缩松等缺陷。为了提升钩尾牵引部位铸造品质,为货车运行排除安全隐患,通过对各种厂家提供的4种冒口套进行少量投产,并锯切解剖,查看冒口内钢液及铸件本身内部品质情况,从中选取满足使用要求的最佳方案,满足了相关技术标准中该部位品质要求。
Daily production and testing found that the type 17 coupler hook hook tail traction there are different degrees of shrinkage, shrinkage and other defects. In order to improve casting quality at the towed tail towing site and eliminate potential safety hazards for truck operation, a small amount of 4 types of riser sleeves provided by various manufacturers were put into operation and the dissection was cut to see the internal quality of the molten steel in the riser and the castings themselves Select the best solution to meet the requirements of use, to meet the relevant technical standards in the parts of the quality requirements.