Welding method of laser brazing of X 80 pipeline steel

A welding method and pipeline steel technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., to achieve uniform preheating effect and avoid the effect of multiple processes
CN103192149AActive Publication Date: 2013-07-10邳州市博睿投资管理有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
邳州市博睿投资管理有限公司
Publication Date
2013-07-10

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Abstract

The invention relates to a welding method of laser brazing of X 80 pipeline steel and belongs to the advanced manufacturing technology field. High energy laser source is utilized as unified preheating light source and welding light source to perform steps which comprises laser-bounce, transverse beam splitting, energy distribution and inward refocusing are performed on laser through a reflecting mirror, a spectroscope and a focusing mirror, the purpose of laser transverse beam energy distribution is achieved by adjusting the position of the spectroscope, distance between a front laser beam and a rear laser beam is adjusted by adjusting the size of a wedge angle of the spectroscope to form into the front laser beam and the rear laser beam, the front laser beam is served as a preheating light beam, the rear laser beam is served as a welding beam, and energy dispersion of the preheat light beam is performed through a concave lens when the preheating beam is utilized to preheat. The welding method of the laser brazing of the X 80 pipeline steel solves the problem that nonuniform weld microstructure caused by common welding is easy to cause electrochemical corrosion.
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Description

technical field

[0001] The invention relates to a welding method for laser brazing of X80 pipeline steel, belongs to the field of advanced manufacturing technology, and solves the problem that electrochemical corrosion is easily caused by uneven weld seam structure caused by conventional welding. Background technique

[0002] X80 pipeline steel is the highest-grade steel used in China's active pipelines. For long-distance oil and gas pipelines, welding is an indispensable process. At present, the main welding processes used in pipeline welding construction are: cellulose welding rod and self-protection agent The combined process of cored wire semi-automatic welding (SMAW+FCAW, commonly referred to as semi-automatic welding), argon-rich mixed gas shielded automatic welding process (GMAW, commonly referred to as automatic welding) and the combined process of cellulose electrodes and low-hydrogen electrodes (SMAW, Usually called manual welding); in these traditional welding pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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