论文部分内容阅读
通过对再生钻杆摩擦焊接头灰斑缺陷的电子显微镜分析,指出了摩擦焊灰斑缺陷的宏观和微观特征,探明了摩擦焊灰斑区夹杂物的主要来源,提出了防止和消除摩擦焊灰斑缺陷的工艺措施。
The microscopic and microscopic features of the spot defects in the friction welding were pointed out by the electron microscopic analysis of the spot defects in the friction welding spot of the regenerative drill pipe. The main sources of inclusions in the spot area of the friction welding were identified. Gray spot defects of the technical measures.