Ultrahigh-strength steel manipulator automatic pulse MIG welding method
An automatic pulse, ultra-high-strength steel technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as unsuitable bulletproof steel plates
Inactive Publication Date: 2021-09-10
GUIZHOU JONYANG KINETICS
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Problems solved by technology
For example, the Chinese patent with the publication number CN107971610A provides a special gas-shielded welding process for high-Ti ultra-high-strength steel, but it is not suitable for bulletproof steel plates with the brand name of 30CrNiMoNb, and a special welding process is still required to ensure welding quality and efficiency.
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[0036] The welding adopts the automatic welding system of manipulator, which is composed of welding power supply, 6-axis manipulator body, 2-axis L-shaped positioner, gun cleaning station, manipulator control cabinet and operation panel, the welding station of 2-axis L-type positioner and The gun cleaning station is located within the working range of the 6-axis manipulator body.
[0037] In this embodiment, the grade of the steel plate to be welded is 30CrNiMoNb, the grade of the welding wire is HGQ80, the diameter of the welding wire is 1.0 mm, and the thickness of the steel plate is 5 mm. Before welding, preheat the steel plate to be welded to 100°C, the preheating area is 20mm-25mm on the groove side, and then install the steel plate to be welded on the 2-axis L-shaped positioner, and the welding seam is carried out by holding the welding wire by the manipulator. Automatic pulse MIG welding, the welding current is 100A-150A, the welding voltage is 15V-18V, the dry extensio...
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Abstract
The invention provides an ultrahigh-strength steel manipulator automatic pulse MIG welding method. The method comprises the following steps that before welding, after a steel plate to be welded is preheated to 100 DEG C, the steel plate to be welded is installed on a two-axis L-shaped positioner, a welding joint is a butt joint or a T-shaped joint, a welding wire is clamped by a manipulator to carry out automatic pulse MIG welding on a welding seam, during welding, protective gas is continuously introduced into the welding position, the mark of the steel plate to be welded is 30CrNiMoNb, and the mark of the welding wire is HGQ80. According to the ultrahigh-strength steel manipulator automatic pulse MIG welding method, the principle of low-strength matching is adopted, manipulator automatic pulse MIG welding of ultrahigh-strength steel materials with the tensile strength being 1727.3 MPa and the specified plastic extension strength being 1374.3 MPa is achieved, workpiece deformation is small, and welding quality and welding efficiency are guaranteed.
Description
technical field [0001] The invention belongs to the technical field of ultra-high-strength steel welding, and in particular relates to an automatic pulse MIG welding method of an ultra-high-strength steel manipulator. Background technique [0002] In order to reduce the weight of the structure and improve the bearing capacity, the application of low-alloy high-strength steel in industrial and mining machinery has attracted more and more attention. In recent years, ultra-high-strength steel with yield strength >800MPa has been widely used in domestic construction machinery to meet the needs of large-scale, lightweight, and high-efficiency construction machinery. Due to the complex alloy system and high hardenability of ultra-high-strength steel, cold cracks are prone to occur during welding; in addition, the ultra-high-strength steel has a high level of strength, and it is easy to cause embrittlement of the welded joints including the welding heat-affected zone during the ...
Claims
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IPC IPC(8): B23K9/173B23K9/235
CPCB23K9/173B23K9/235
Inventor 刘瑞涛罗乔杨彦明张金亚王忠文
Owner GUIZHOU JONYANG KINETICS