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SUN Yin-lin. Cause Analysis and Improvement of Cracks in Rocker Arm Made of Steel Casting[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2012, 48(9): 631-633.
Citation: SUN Yin-lin. Cause Analysis and Improvement of Cracks in Rocker Arm Made of Steel Casting[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2012, 48(9): 631-633.

Cause Analysis and Improvement of Cracks in Rocker Arm Made of Steel Casting

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  • Received Date: October 25, 2011
  • By means of chemical composition analysis and metallographic examination, the reason of the cracks in rocker arm of engine valve during magnetic testing was analyzed. The results showed that the crack was hot tear during casting process. Changing the radius of transmission area of mould and reducing the size of ingate can prevent the recurrence of hot tear.
  • [1]
    陈国桢,肖柯则,姜不居.铸件缺陷和对策手册[M].北京: 机械工业出版社, 2004.

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