Pipeline multipoint synchronous automatic welding variable position lap joint method
A synchronous, automatic, multi-point technology, applied in welding equipment, tubular objects, arc welding equipment, etc., can solve the problems of welding defects, many welding units, and high welding defects of joints, so as to reduce the probability of welding defects and solve technical problems Effect
Active Publication Date: 2014-12-17
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
The automatic welding equipment has many welding units and a large number of joints. It is difficult to manually overlap and polish the joints, and the probability of joint welding defects is high.
If the overlap remains in the same position throughout, the overlap will bulge and cause weld defects
Method used
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Embodiment
[0014] refer to Figures 1 to 6 Embodiments of the present invention are further described:
[0015] The pipeline multi-point synchronous automatic welding equipment is provided with eight welding units in total, all of which are fixed on the same rotary drive mechanism 9 and move in a circular arc along the welding seam at the same time. The eight welding units are respectively equipped with a welding torch 1, a second welding torch 2, a third welding torch 3, a fourth welding torch 4, a fifth welding torch 5, a sixth welding torch 6, a seventh welding torch 7 and an eighth welding torch 8:
[0016] Now take the first welding torch 1 and the second welding torch 2 as an example to explain the automatic welding change position overlapping method:
[0017] 1. Welding heat welding layer: first welding torch 1 starts arcing from 0°, and second welding torch 2 starts arcing from 45°. When the angle sensor detects that the rotating motor moves to 45°, the rotating motor will dece...
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The invention discloses a pipeline multipoint synchronous automatic welding variable position lap joint method. The method is designed for increasing the success rate of lap joint welding. According to the method, a welding module of a pipeline multipoint synchronous automatic welding device is used, angle signals collected through an angle sensor and signals input through a far-end control box are sent to a master control unit, the master control unit judges the welding angle and a Flag bit through a control program, the current number of welding layers and the position where each welding unit is located are determined, different layer numbers and welding parameters of different positions are distributed to the welding units respectively through a coordinate system address distributed in the program, and multipoint variable position lap joint welding is conducted through program control. According to the variable position lap joint technology, the lap joint position of a welding joint is changed continuously, the joint is prevented from being lapped in an accumulated mode in the same position, the probability of generation of welding defects due to repeated lap joint operation of the joint can be reduced, and the technical purpose of lap joint operation of the joint can be achieved.
Description
technical field [0001] The invention relates to a multi-point synchronous automatic welding transformation position overlapping method for pipelines, which belongs to the technical field of pipeline welding. Background technique [0002] The traditional automatic welding of pipelines is performed by two welding trolleys moving along the track in a semi-circle to perform weld seam welding. figure 1 ). The pipeline multi-point synchronous automatic welding equipment has eight welding units, four in a group, each welding unit is located 45° apart, and the stroke of each welding torch is the arc length corresponding to the central angle of 0°-45°. The automatic welding equipment has a large number of welding units and a large number of joints. It is difficult to manually overlap and polish the joints, and the probability of joint welding defects is high. If the overlapping points are kept in the same position throughout, the overlapping points will bulge and produce welding de...
Claims
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IPC IPC(8): B23K9/028B23K9/133
CPCB23K9/0282B23K9/12B23K2101/06
Inventor 张毅马志锋胡立新王长江张连宇张锋尹铁崔丽芳赵磊王新升
Owner BC P INC CHINA NAT PETROLEUM CORP