weld-on type tool joint 焊接式钻杆接头
The result shows that the fracture mode is low stress brittle fracture. The fracture is mainly caused by needle type martensite in the heat affected zone of the weld joint.
结果表明,在连接杆焊缝附近的热影响区中存在大量针状马氏体组织,在低应力的作用下,导致材料发生脆性断裂。
If applied to a 1 in thick weld joint, the welding symbol below describes what type of weld?
如果应用于 1 英寸板厚的焊接接头 ,以下焊接符号表示的是什么焊缝类型?。
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