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第十五节消除焊接残余应力的方法The way to remove welding residual stress 1、整体高温回火（消除应力退火）回火温度越高，时间越长，应力就消除的越彻底，整体高温回火是生产中应用最广泛的一种方法。Integrative high-temperature temperIf the temperature of temper is higher and the time is longer, the stress will be removed more throughly, integrative high-temperature temper is the most used one.2、局部高温回火只对焊缝及其附近的局部区域进行加热以消除应力，适用于结构比较简单、拘束度小的焊接结构。Partial high-temperature temper: The area is only in the weld and its near area where is heated to remove stress,. This method is used for the welding construction whose construction is simpler and the constraint degree is smaller.3、机械拉伸法产生焊接残余应力的根本原因是焊件焊后产生了压缩而变形。因此，焊后对焊件进行加载拉伸，产生拉伸塑性变形而残余应力也随之减小。其很适用于焊接容器。Machine stretchingThe basic reason of welding residual stress is the contraction deformation after welding.So, we load and stretch the welding components after welding can make tensible stretching deformation,by which the residual stress will also decrease. This way siuts to welding container.4、温差拉伸法Stretching by temperature gap5、振动法Libration待序......
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发表于 2021-11-17 18:08:38
