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Abstract：
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Because the size of cylinder block with square cross-section is big,many defects usually appear in the forging process,such as sunk angle,shearing oblique,underfill and fold,which impact the product quality and the cycle of contract performance.So in this paper,based on observing and analyzing forgings defects and production practice,the traditional forging technology was improved and simplified.The improved forging technology was easy to operate and increased the first qualified rate of products to 95% by avoiding the defects effectively.At the same time,it increased the yield of cylinder block by 5%~6%.This technology has already been applied to practice,and has gained a very good effect and given better economical benefits to the business.
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AuthorIntro：
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Reference：
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[1]中国机械工艺学会,锻压学会.锻压手册[M].北京:机械工业出版社,2002.
[2]刘国晖.大型板类锻件的锻造[J].锻压技术,2005,30(2):4-6.
[3]黄早文,徐开东,张志坤,等.管坯镦锻工艺仿真及优化[J].锻压技术,2006,31(6):9-11.
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