Full penetration weld method for fillet joint single-face J-shaped groove of box beam of vibration screen

Abstract

The invention provides a full penetration weld method for a fillet joint single-face J-shaped groove of a box beam of a vibration screen. According to the full penetration weld method, a weld back-up member is not additionally arranged, a general welding robot having a linear locating function is selected, weld joint molten bath forming influence factors and quantitative factor indexes formed by the technical features of a weld joint molten bath are effectively controlled, it is guaranteed that molten bath forming can be continuously and stably controlled in the welding process, and full penetration of the fillet joint single-face J-shaped groove of the type is achieved. By the adoption of the full penetration weld method, the problems in the welding process of similar fillet joint single-face J-shaped grooves of box beams of vibration screens, permanent backing-up members are not allowed to be used, different degrees of incomplete fusion and incomplete penetration are caused when detachable baking-up members are adopted, and full penetration of the weld joint cannot be guaranteed are solved, the welding technology process is simplified, the comprehensive production cost is greatly reduced, the efficiency is greatly improved by about two times, the labor intensity of welding operators is greatly relieved, and the welding quality of products is improved.

Description

technical field [0001] The invention relates to the technical field of full-penetration weld seam welding of steel plate structural parts, in particular to a method for full-penetration welding of a single-sided J-shaped groove of a vibrating screen box beam fillet joint. Background technique [0002] There is a beam on which the exciter is installed on the banana-shaped linear vibrating screen (hereinafter referred to as the beam), which belongs to a typical semi-closed box beam welded structure. This type of structure design mostly adopts the inner and outer fillet welds of the fillet joints. form, see attached figure 1 . At present, the general method of single-sided groove welding for fillet joints similar to this box girder structure is to reserve a butt joint gap, and use the method of adding a welding backing plate on the inner side of the flange to ensure full penetration of the weld seam, see attached figure 2 . But for vibrating screen products, the design of t...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the single-sided J-groove welding of corner joints similar to vibrating screen box girders does not allow the use of permanent backing plates, and the use of detachable backing plates will cause different degrees of non-fusion at the root of the weld seam In order to solve the problem of incomplete penetration and inability to guarantee full penetration of the weld seam, a method for full penetration welding of single-sided J-groove fillet joints of vibrating screen box beams is provided.

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