论文部分内容阅读
管板全位置手工电弧焊操作时,由于熔敷金属的重力作用,在仰焊位置易产生焊瘤;在立焊位置易产生中间突起或边缘熔合不良;在平焊位置则易发生焊脚过低或咬边等焊接缺陷。为此,必须采取适合于各种焊接位置的操作方法,方可获得良好的焊缝成形。打底焊操作技术焊接管板材料为:管板16Mng厚12毫米,管系20g,规格φ76×5毫米。焊条为结507,φ3.2毫米。焊接电流95～105安。打底焊道要求充分熔透接头根部,以保证底层焊接质量。接头可划分为右侧与左侧两部
Tube plate full position manual arc welding operation, due to the gravitation effect of deposited metal, welding position in the Yang easily lead to welding; in the vertical welding position prone to the middle of the protrusion or edge of poor fusion; Low or undercuts and other welding defects. For this reason, it is necessary to adopt a method suitable for various welding positions in order to obtain a good weld shape. Base welding operation technology welding tube plate material: tube plate 16Mng thick 12 mm, tube 20g, size φ76 × 5 mm. Electrodes for the knot 507, φ3.2 mm. Welding current 95 ~ 105 security. Base weld bead penetration required full penetration of the root, to ensure the quality of the underlying welding. The connector can be divided into two parts, right and left