a welding method

A welding method and welding parameter technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of poor arc accessibility at the root of the weld, and the welding quality cannot be guaranteed.

Active Publication Date: 2019-10-25
CRRC ZHUZHOU ROLLING CO LTD
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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a welding method, which is used to solve the problems caused by the characteristics of the distribution structure of the welds when welding the "cross" welds in the railway wagons in the prior art. Poor arc accessibility at seam root, which leads to technical problems that welding quality cannot be guaranteed

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Embodiment Construction

[0031] In order to solve the technical problem that the arc accessibility at the root of the weld seam is poor due to the characteristics of the weld seam distribution structure when welding the "cross" weld seam in the railway freight car in the prior art, and the welding quality cannot be guaranteed. , the present invention provides a welding method, which is applied to a "cross" weld, the method comprising: based on a preset first welding parameter, welding the assembled longitudinal weld between the first workpiece and the second workpiece ; There is also a transverse weld between the first workpiece and the second workpiece, and there is an angle between the transverse weld and the longitudinal weld; based on the preset second welding parameters in the transverse weld Welding the reverse substrate weld bead at the seam root; after rotating the first workpiece and the second workpiece by 180°, cleaning the reverse substrate weld bead and the longitudinal weld bead, based on...

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Abstract

The invention provides a welding method. The welding method comprises the steps that on the basis of preset first welding parameters, a longitudinal welding line between an assembled first workpiece and an assembled second workpiece is welded; a transverse welding line is further included between the first workpiece and the second workpiece, and the included angle is formed between the transverse welding line and the longitudinal welding line; on the basis of preset second welding parameters, a back face substrate weld bead is welded to the root of the transverse welding line; after the first workpiece and the second workpiece are rotated by 180 degrees, back chipping is conducted on the back face substrate weld bead and a longitudinal weld bead, and the groove face of the transverse welding line is welded on the basis of preset third welding parameters; and after welding is finished, the transverse welding line is ground.

Description

technical field [0001] The invention belongs to the technical field of welding technology, and in particular relates to a welding method. Background technique [0002] According to the railway freight car welding standard: the full penetration butt welding of the railway freight car box type assembly welding fatigue load must be 100% ultrasonic flaw detection, the appearance of the weld is not allowed to have undercut to ensure the fatigue performance, and the welding area needs to be polished after welding to make the weld The transition between the seam and the base material is smooth. [0003] In the middle beam of the key component of railway freight cars, there are "cross" full-penetration welds that bear fatigue loads, and the intersection points are welding blind spots. When using the welding process method in the prior art to weld this "criss-cross" type weld, due to the characteristics of the weld distribution structure, the thickness of the base metal plate reache...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/02B23K9/16
CPCB23K9/02B23K9/16B23K2101/006
Inventor 易冉张旭波梅和平袁红君
Owner CRRC ZHUZHOU ROLLING CO LTD
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