1问题的提出在1998年以前，我厂装载机外观覆盖件经常出现早期锈蚀问题，用户反映比较强烈。另外，成品装载机库存或寄售时间稍长，因出现早期锈蚀点往往也需要重新喷漆，造成成本增加。为此，1998年厂部决定将装载机早期锈蚀点的攻关列为重点质量改进项目。通过对锈蚀点的排查 A problem raised Before 1998, I plant appearance of the loader often appear early corrosion problems, the user reflected more strongly. In addition, finished loaders inventory or consignment longer time, due to the emergence of early rust points often also need to be repainted, resulting in increased costs. To this end, in 1998 the factory decided to tackle the problem of early corrosion of loaders as a key quality improvement project. Through the investigation of the rust point