The prediction and controlling of welding distortion and residual stress is still a very important project in the industry.

焊接变形和残余应力的预测和控制至今仍然是工业生产中需要解决的重要课题。

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This paper mainly describes the structure of DJ1 bogie side frame and analyzes its distortion characteristic. The controlling technology of welding distortion has also been presented.

介绍了DJ 1构架侧梁的结构，分析了其焊接变形特点，阐述了控制构架侧梁焊接变形的工艺措施。

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The paper introduces the difficulties of roller spray welding technique such as controlling for distortion, keeping for layer evenness and dimension of roller diameter.

就轧辊喷焊的技术关键问题：变形控制，涂层均匀性的控制，喷焊后辊子外径尺寸控制及轧辊的组焊工艺等，作以介绍。

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