Repair-free welding method for rail vehicle tube-sheet structure

Abstract

The invention relates to the technical field of rail vehicle welding, and discloses a repair-free welding method for a rail vehicle tube plate structure. The method comprises the steps of: using a welding simulation model, increasing the welding capacity in the longitudinal direction on the longitudinal auxiliary beam connected between two beams and each hanger seat connected to the inner side and / or outer side of the beam; The amount of rotation produced by the beam is different, and the differential anti-deformation tolerance control is adopted for the longitudinal auxiliary beam and each hanger; the assembly gap between the longitudinal auxiliary beam and each hanger and the beam is controlled within the set range; according to symmetrical welding, the same Welding direction, first inside and then outside, welding from the middle to both ends, welding the front seam first, then welding the reverse seam, welding the flat seam first, and then welding the vertical seam welding principle; control welding parameters, and control The width and thickness of each weld. The invention can realize the maintenance-free cross beam, greatly shorten the manufacturing cycle, and improve the efficiency and quality.

Description

Technical field [0001] The present invention relates to the field of rail vehicle welding technology, and more particularly to a rail vehicle tube sheet structure freely repairing a welding method. Background technique [0002] Due to the uneven heating of the welding process, cooling, the welding structure is unavoidable, and the welding deformation typically needs to be orthopedically by mechanical, flame, or the two, thereby obtaining a qualified size. [0003] The orthopedics of the welded parts is the largest waste during the production of welding products, increasing the manufacturing cycle of welding products, in the past, each group of beams of the beam is about 2 hours (two), according to 12 / Tiancheng can plan, waste every day 48 hours; and due to machinery, flame repair, the welding product base material collapsed, the weld cracked and tissue risks, affecting the safety of products. Inventive content [0004] The present invention is intended to solve at least one of...

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Problems solved by technology

[0003] The orthopedics of welded parts is the biggest waste in the production process of welded products, which increases the manufacturing cycle of welded products. In the past, the repair time of each set of beams was about 2 hours (two people). According to the production capacity plan of 12 vehicles / day, waste per day 48 hours; and due to mechanical and flame adjustments, the base metal of the welded product will collapse, the risk of weld cracks and tissue hardening will affect the safety of the product

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