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一、案例简介某市机床厂从某五金公司购进螺旋纹80mm 钢钻19套,支付货款13万元。在验收时做表面检查未发现有产品质量问题。后经安装调试并投入正式运转。然而在运转的第二天发现螺旋纹有轻微破碎现象,工厂当时认为钢钻硬度不够,决定换装另一套同型号钢钻试一试,但在调试第二套钢钻过程中,钻杆崩裂,碎钢块飞出刺入在场的4名工人身体及头部,造成两人重伤,两人轻伤。经市技术鉴定部门鉴定,发现这批钢钻的化学成份、力学性能等技术标准均达不到国家
First, the case introduction A city machine tool factory purchased from a certain hardware company spiral 80mm steel drill 19 sets, payment of payment of 130,000 yuan. Surface inspection at the time of inspection found no product quality problems. After installation and commissioning and put into formal operation. However, on the second day of operation, it was found that there was a slight breakage of the spiral pattern. At that time, the factory considered that the hardness of the diamond was not enough and decided to try another piece of the same type of steel drill. However, during the debugging of the second set of steel drills, Cracked, broken steel flying out of the presence of four workers in the body and head, causing two serious injuries, two minor injuries. Appraised by the municipal technical appraisal department and found that the chemical composition, mechanical properties and other technical standards of these batch of steel drills are not up to the country