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我厂生产的ф700毫米滚珠座,材质为45钢,该滚珠座是用厚30毫米的钢板先锻制成两个半圆,然后再用结507焊条焊制而成的。由于该产品的质量要求高,每焊完一个焊缝接头,都要经x射线检验。要求在接头处不允许有气孔和其它焊接缺陷存在。但是,由于我们过去选择焊接工艺不当,使大量的滚珠座在焊后因有气孔存在,而使返工率很高,严重地影响了生产的顺利进行。为了解决滚珠座焊后产生气孔这个问题,我们重新
Our factory produces ф700 mm ball seat, made of 45 steel, the ball seat is 30 mm thick steel plate forged into two semicircles, and then welded knot 507 electrode. Due to the high quality requirements of the product, a weld joint per weld is subject to x-ray inspection. Requirements at the joints are not allowed to have holes and other welding defects exist. However, due to the improper welding process we chose in the past, a large number of ball seats were welded with fissures and the rework rate was very high, which seriously affected the smooth production. In order to solve the ball seat weld hole after the issue of this, we re-