Method for controlling welding deformation of large and long aluminum profiles for railway vehicle body
A rail vehicle, welding deformation technology, applied in welding equipment, welding equipment, auxiliary welding equipment and other directions to achieve the effect of avoiding welding deformation
Inactive Publication Date: 2015-10-21
龙口市丛林铝材有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a method for preventing and controlling the welding deformation of long aluminum profiles used for rail vehicle bodies. control;
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[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0018] A method for preventing and controlling the welding deformation of a long aluminum profile for a rail vehicle body according to the present invention, the prevention and control method includes the prevention and control of the preparation process of the aluminum profile and the prevention and control of the welding process of the aluminum profile; this embodiment begins with The production and preparation process of aluminum profiles has been improved. During the production and preparation of aluminum profiles, the preparation methods used include smelting, refining, casting, homogenization, extrusion, straightening and aging. Among them, smelting, refining, casting, homogenization The process of straightenin...
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Abstract
The invention relates to a method for controlling welding deformation of large and long aluminum profiles for a railway vehicle body. The method includes the step of control over the aluminum profile manufacturing process and the step of control over the aluminum profile welding process. The aluminum profile manufacturing process sequentially includes the steps of smelting, refining, casting, homogenizing, extruding, straightening, saw cutting and ageing. A saw-cut aluminum profile structure comprises the first welding aluminum profile and the second welding aluminum profile, the first end face of one end of the first welding aluminum profile extends perpendicularly to form male claws, the second end face of one end of the second welding aluminum profile extends perpendicularly to form female claws, and the male claw are clamped to the inner surfaces of the female claws and are longer than the female claws by 0.4 mm-1 mm. Because the male claws are slightly longer than the female claws, namely, gaps of 0.4 mm-1 mm remain outside insertion openings after the profiles are spliced, profile shrinkage deformation caused by heat input in the welding process can be effectively hindered, and remaining heat stress can be released.
Description
technical field [0001] The invention relates to a method for preventing and controlling the welding deformation of long aluminum profiles used for rail vehicle bodies, especially for arc surface and flat 6N01 long aluminum profiles that exceed the process size requirements during the MIG automatic welding process. Shrinkage and deformation are prevented and controlled. Background technique [0002] At present, rail vehicles generally use the MIG automatic welding process to weld aluminum profiles, and rail vehicles have high requirements for profiles. Transverse deformation (including angular deformation) and longitudinal shrinkage occur, affecting the profile and length of the product. In the existing technology, on the one hand, rely on fixtures to limit the deformation in the welding process, the effect of this measure is not ideal; It is difficult, time-consuming and labor-intensive, and seriously affects production efficiency. Contents of the invention [0003] The...
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IPC IPC(8): B21C23/02B23K33/00B23K9/173B23K37/04B23P15/00C22F1/04
Inventor 王刚张培良苏振佳高安江孙文超张人杰
Owner 龙口市丛林铝材有限公司