The test shows that the non-equality and unknown stress distribution of weld joint, which can be promoted by extra-load, is the key to make sure the steel pressure vessel for safety.
结果表明，焊接接头的应力不均匀性和不确定性是影响钢制压力容器安全性的关键，采用加载法可以有效地改善这种非均匀应力分布状况。
On the one hand guaranteeing reducing normal stress depression, enhancing the non-dense weld ability;
一方面保证了法向应力的降低，提高非密实件的可焊性能；
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