利用凝固过程自补缩，可使铸件表面质量好，无缩孔、缩松等铸造缺陷，工艺出品率大大提高。
Using self-feeding in solidification can make good surface quality, no shrinkage casting defects of castings; the technology product yield of the casting greatly increases.
建议在质量工作中推行FMEA技术，系统、有效、低成本地做好质量缺陷预防工作，做到有备无患。
FMEA technology is advised to be applied in quality work, so as to prevent quality failure systematically and cost-effectively.
在该加载模式下，拉深件无起皱和拉裂缺陷，零件区域厚度分布均匀，整体成形质量较好，满足设计和使用要求。
In this mode, there is no wrinkle and crack in drawing parts, the thickness distribution is even and the overall forming quality is better, which meet the design and use requirements.
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