【摘要】 分析了堵头材料３０ＣｒＭｏ钢与Ｐ－１１０套管的焊接性，探讨了两种材料的焊接工艺特点，并制定了相应的焊接工艺。研究认为它们的焊接性较差，需要采取预热和焊后热处理的方法来消除焊接冷裂纹，并采用塞焊和焊接加强筋来提高焊接接头的连接强度。更多还原

【Abstract】 The weldability of pipe stopper plug material 30 crmo steel and P 110 casing is analysed. The character istic of welding technology of the two material is discussed and the corresponding welding technology is established. Their weldability is considered worse through study. The method of preheat and post heat treatment is neccessary to adopt for removing welding cold cracks and plug welding & welding stiffener for improving the jointing strength of welded joint.更多还原