Method of using robot for automatic welding of forged coupler yokes

A technology of automatic welding and welding methods, which is applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of difficult welding root cleaning, unfused weld seams, hidden safety hazards, etc., and achieve saving welding materials and high welding pass rate Improvement, the effect of high welding surface quality

Active Publication Date: 2014-11-19
南京力源轨道交通装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of rail transit construction in the direction of high-speed and heavy-duty, the traditional cast steel coupler frame inevitably has defects such as air holes, inclusions, and cracks due to the inherent factors of the casting process, and the existence of these defects poses a threat to the high-speed operation of railway heavy-duty vehicles. Potential safety hazards, and from the statistics of actual operation and maintenance, about 40% of the problems are related to the coupler frame, so it is imminent to improve the manufacturing process of the coupler frame
For this reason, the forging method is generally us

Method used

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  • Method of using robot for automatic welding of forged coupler yokes
  • Method of using robot for automatic welding of forged coupler yokes
  • Method of using robot for automatic welding of forged coupler yokes

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The forged coupler frame uses E36 steel plate. The parameters of the welded joint are: X-shaped groove, the blunt side of the groove is 2mm, and the groove angle is 60°. Before welding, degrease and clean the groove area.

[0021] The welding method includes the following steps: setting a water-cooled liner at the lower end of the X-shaped weld groove, and fixing the water-cooled liner flush with the center of the groove, and then opening the water-cooled liner arranged in the water-cooled liner. Cooling water circulation device; (2) at 90v%Ar+10v%CO 2 Under the atmosphere of the atmosphere, the welding robot (Panasonic automatic welding machine) is instructed to perform four passes of welding on the upper end of the weld groove. The welding currents of the first to fourth passes are 420A, 420A, 440A and 450A respectively, and the welding voltage Respectively 28V, 28V, 30V, 30V, the welding speed is 48cm / min, 48cm / min, 51cm / min, 52cm / min; 2 Under the gas, the welding r...

Embodiment 2

[0023] The forged coupler frame uses 15MnV steel plate. The parameters of the welded joint are: X-shaped groove, the blunt edge of the groove is 2mm, and the groove angle is 60°. Before welding, degrease and clean the groove area.

[0024] The welding method includes the following steps: setting a water-cooled liner at the lower end of the X-shaped weld groove, and fixing the water-cooled liner flush with the center of the groove, and then opening the water-cooled liner arranged in the water-cooled liner. Cooling water circulation device; (2) at 90v%Ar+10v%CO 2 Under the atmosphere of the atmosphere, the welding robot (Panasonic automatic welding machine) is instructed to perform four passes of welding on the upper end of the weld groove. The welding currents of the first to fourth passes are 420A, 420A, 440A and 450A respectively, and the welding voltage Respectively 28V, 28V, 30V, 30V, the welding speed is 48cm / min, 48cm / min, 51cm / min, 52cm / min; 2 Under the gas, the welding...

Embodiment 3

[0026] The forged coupler frame uses E36 steel plate. The parameters of the welded joint are: X-shaped groove, the blunt side of the groove is 2mm, and the groove angle is 60°. Before welding, degrease and clean the groove area.

[0027]The welding method includes the following steps: setting a water-cooled liner at the lower end of the X-shaped weld groove, and fixing the water-cooled liner flush with the center of the groove, and then opening the water-cooled liner arranged in the water-cooled liner. Cooling water circulation device; (2) at 90v%Ar+10v%CO 2 Under the atmosphere of the atmosphere, the welding robot (Panasonic automatic welding machine) is instructed to perform four passes of welding on the upper end of the weld groove. The welding currents of the first to fourth passes are 420A, 420A, 440A and 450A respectively, and the welding voltage Respectively 28V, 28V, 30V, 30V, the welding speed is 48cm / min, 48cm / min, 51cm / min, 52cm / min; 2 Under the gas, the welding ro...

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Abstract

The invention relates to a method of using a robot for automatic welding of forged coupler yokes. The welding method includes the steps: (1) forming a shape of an X-shaped weld groove, arranging a water cooling pad at the lower end of the X-shaped weld groove after a weld part is fixed, flushing the water cooling pad with the center of the groove, fixing the water cooling pad to the groove, and then starting a cooling water circulation device arranged in the water cooling pad; (2) in a protective atmosphere, instructing a welding robot to perform four-gate welding at the upper end of the weld groove; (3) taking off the water cooling pad, and instructing the welding robot to perform four-gate welding at the lower end of the weld groove in the protective atmosphere. The method of using the robot for automatic welding of the forged coupler yokes has the advantages that labor intensity is remarkably relieved, welding labor hours are reduced, back gouging is not needed, weld testing acceptability is guaranteed, and welding materials are saved.

Description

technical field [0001] The invention belongs to the technical field of welding technology, and more specifically, the invention relates to a robot automatic welding method for a forged coupler frame. Background technique [0002] The coupler frame used on rail transit vehicles is an important part of the coupler buffer device, which directly completes the longitudinal traction or impact force between vehicles when the vehicle is towed, connected and buffered. With the development of rail transit construction in the direction of high-speed and heavy-duty, the traditional cast steel coupler frame inevitably has defects such as air holes, inclusions, and cracks due to the inherent factors of the casting process, and the existence of these defects poses a threat to the high-speed operation of railway heavy-duty vehicles. Potential safety hazards, and from the statistics of actual operation and maintenance, about 40% of the problems are related to the coupler frame, so it is immi...

Claims

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Application Information

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IPC IPC(8): B23K37/00B23K9/16B23K35/30
CPCB23K9/035B23K9/16B23K9/235B23K33/00B23K35/3026B23K35/383B23K37/003
Inventor 扶香荣姬传堂
Owner 南京力源轨道交通装备有限公司
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