关键词： 大型涡轮叶片；无余量精密铸造；反变形；蜡模校正模 [gap=979]Key words： large-size turbine blades; investment casting; reverse deformation; adjusting mould of
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reverse deformation craft 反变形工艺
reverse-deformation method 反变形法
reverse deformation process 反变形工艺
The result prove that: reverse deformation can reduce the warp efficiently.
结果表明:反变形模型能有效的减小产品的翘曲变形。
参考来源 - 基于数值模拟及反向变形的注塑模具型腔设计方法·2,447,543篇论文数据，部分数据来源于NoteExpress
The equal reverse deformation on the workpiece was proposed before welding, and the welded workpiece was measured using CMM after laser welding test.
在焊接前对工件施加对应量的反变形，进行激光焊接实验，再用三坐标测量仪测量焊接件。
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。
But, it is very difficult to calculate values of restraint, restraint length and reverse deformation accurately, because of the complication of stress fields in welded structure.
但是由于焊接结构应力场的复杂性，使得精确计算拘束力、拘束长度和反变形量值很困难。
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