Some methods used in the control of welding deformation, such as reverse deformation, system analysis, controlling process parameters and temperature field, are introduced.

同时介绍了控制焊接变形的几种方法，如反变形法、控制工艺参数、控制温度场以及系统综合分析等。

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This paper describes the methods of controlling the frame quality in terms of process design, mould design, control of deformation and defects from welding surface treatment, etc.

从工艺设计、胎具设计、控制焊接变形和缺陷、表面处理等各环节实行严格的品质控制，多年来生产出多种型号的车架全部为合格品。

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Fabrication technology and deformation control measures, which can meet requirements of specifications without need of corrections after welding, for the steel box members are expounded.

本文介绍了该钢箱杆件的制造工艺及不需焊后矫正就能达到规范要求的变形控制措施。

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