Hardness was quiet different in different zone of fusion welding joint.

熔焊接头硬度分布不均匀，热影响区是薄弱环节。

For the tensile strength, the parent material is the biggest, the welding joint is the second, and the welding wire is the worst.

就抗拉强度而言，母材最大，焊接接头次之，焊丝最小。

There was folding deformation on the edge of spot welding joint of domestic specimen.

国产板点焊试样焊点边缘产生了折叠变形；

Lamellar tearing of steel is a kind of very dangerous defect of the welding steel bridge and normally takes place at the fillet welding joint .

钢材层状撕裂是焊接钢桥中一种非常危险的缺陷，通常发生在角焊接头处。

The thermal cycle on the surface of friction welding joint was measured by means of thermocouples.

结果表明,摩擦焊接头的温度场、飞边形状和轴向缩短量的计算结果和实验结果吻合较好.

The principle of measuring normal deformation of the surface of friction welding joint is analyzed.

分分析了测量摩擦焊接头表面法向变形的原理.

The early losing effectiveness causes of the superheater pipe welding joint were investigated and analysed.

针对某电厂异种钢焊接接头高温早期失效的过热器管件进行了调查研究和失效分析.