Butt welding method for workshop columns under humid environment
A welding method and technology in a humid environment, applied in the field of butt welding of steel columns in workshops, can solve problems such as hidden dangers of structural connection, delayed welding cracks, welding quality control, etc., so as to increase the welding qualification rate, reduce quality defects, and improve quality and work efficiency. Effect
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[0016] In order to further describe the present invention, the present invention will be further described below in conjunction with embodiments and drawings.
[0017] Such as figure 1 , figure 2 As shown, the process step 3 confirms the process and butt welding: the butt welding process of the H-shaped steel workshop column is the butt welding of the upper column 3 and the lower column 4 along the butt joint 5. The butt welding sequence is to weld the flange plate 2 first, then weld Web 1; In order to prevent too many welds and stress concentration in a short distance, the welds of H-beam webs and flange plates must be staggered by about 200mm to prevent the welds from being too concentrated and causing stress concentration; At the same time, two people should work at the same time.
[0018] The specific operation requirements during construction are as follows:
[0019] 1. Baking and heat preservation of welding rod: Baking at 250~350℃ for 1~2h, then put it in the heat preservat...
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