Groove technology for double-faced forming of one-side welding of angle joint butt seam

Abstract

The invention provides a groove technology for double-faced forming of one-side welding of an angle joint butt seam. A U-shaped plate is arranged on one side of a vertical plate. The U-shaped plate and the vertical plate are perpendicular to each other, and a D-shaped structure is formed. A pair of half-U-shaped grooves are symmetrically formed in the sides, facing the U-shaped plate, of the upperend and lower end of the vertical plate. A pair of half-V-shaped grooves are symmetrically formed in the two ends, facing the vertical plate, of the U-shaped plate. The edges of the bottoms of the half-U-shaped grooves of the vertical plate are in butt joint with roots of the half-V-shaped grooves of the U-shaped plate. Welding filling cavities are formed between the half-U-shaped grooves of thevertical plate and the half-V-shaped grooves of the U-shaped plate. According to the groove technology for the double-faced forming of the one-side welding of the angle joint butt seam, the grooves are simple in form, easy to be machined, convenient to team up and high in weldability; when a similar angle joint is welded automatically, double-faced forming of one-side welding can be achieved easily; and qualification requirements of ultrasonic testing (UT) are also achieved easily.

Description

technical field [0001] The invention relates to the field of heat exchange equipment such as air coolers and composite coolers, and the welding field of single-sided welding and double-sided forming of corner joints of pressure vessels, in particular to a beveling process for single-sided welding and double-sided forming of corner joints. Background technique [0002] The joints of the core components of heat exchange equipment such as air coolers and composite coolers are mostly in the form of corner joints. In the D-type structure, the inner cavity is small in size, and personnel cannot weld inside. At present, artificial argon arc welding is used in China. Surface forming technology meets product quality requirements, but the efficiency of manual argon arc welding is low, and the quality is restricted by the skill level of welders. When the production volume is large, it is difficult to recruit suitable welders. The production tasks are repeatedly restricted. Automatic wel...

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Problems solved by technology

[0002] The joints of the core components of heat exchange equipment such as air coolers and composite coolers are mostly in the form of corner joints. In the D-type structure, the inner cavity is small in size, and personnel cannot weld inside. At present, artificial argon arc welding is used in China. Surface forming technology meets product quality requirements, but the efficiency of manual argon arc welding is low, and the quality is restricted by the skill level of welders. When the production volume is large, it is difficult to recruit suitable welders. The production tasks are repeatedly restricted, and automatic welding methods such as robots are used. Due to the unequal thickness of the vertical plate and the horizontal plate, conventional groove welding is difficult to achieve single-sided welding and double-sided forming, and defects such as burn-through or lack of fusion often occur, and the welding process is discontinuous, especially difficult to meet the requirements of UT flaw detection

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