Re-introduce the technical characteristics of welding automation
Date：2021-12-08 Views：487
Modern welding technology has been able to produce welds without internal and external defects, with mechanical properties equal to or even higher than the connected body. The mutual position of the welded body in space is called a welded joint, and the strength at the joint is not only affected by the quality of the weld seam, but also related to its geometric shape, size, stress situation, and working conditions. The basic forms of joints include butt joints, overlap joints, T-joints (positive joints), and corner joints.
The cross-sectional shape of the butt joint weld seam is determined by the thickness of the welded body before welding and the groove form of the two edges. When welding thicker steel plates, various shapes of grooves are made at the edges in order to penetrate, making it easier to feed the welding rod or wire. There are two types of groove types: single-sided welding groove and double-sided welding groove.
When selecting the groove form, in addition to ensuring welding penetration, factors such as convenient welding, less filler metal, small welding deformation, and low groove processing costs should also be considered. When two steel plates with different thicknesses are connected, in order to avoid severe stress concentration caused by sharp changes in the cross-section, the thicker plate edges are often gradually thinned to achieve equal thickness at the two joint edges. The static strength and fatigue strength of butt joints are higher than those of other joints. Welding of butt joints is often preferred for connections that work under alternating, impact loads, or in low-temperature and high-pressure vessels.
The joint connected by welding method is called a welding joint, which mainly plays a role in connecting and transmitting force. The welding joint consists of three parts: the weld seam, fusion zone, and heat affected zone. As shown in the figure "Welding Joint", the pre welding preparation work for the butt joint is simple, easy to assemble, and the welding deformation and residual stress are small. Therefore, it is often used in the installation of joints and unimportant structures on the construction site.
Modern welding technology has been able to produce welds without internal and external defects, with mechanical properties equal to or even higher than the connected body. The mutual position of the welded body in space is called a welded joint, and the strength at the joint is not only affected by the quality of the weld seam, but also related to its geometric shape, size, stress situation, and working conditions. The basic forms of joints include butt joints, overlap joints, T-joints (positive joints), and corner joints.
The cross-sectional shape of the butt joint weld seam is determined by the thickness of the welded body before welding and the groove form of the two edges. When welding thicker steel plates, various shapes of grooves are made at the edges in order to penetrate, making it easier to feed the welding rod or wire. There are two types of groove types: single-sided welding groove and double-sided welding groove.
When selecting the groove form, in addition to ensuring welding penetration, factors such as convenient welding, less filler metal, small welding deformation, and low groove processing costs should also be considered. When two steel plates with different thicknesses are connected, in order to avoid severe stress concentration caused by sharp changes in the cross-section, the thicker plate edges are often gradually thinned to achieve equal thickness at the two joint edges. The static strength and fatigue strength of butt joints are higher than those of other joints. Welding of butt joints is often preferred for connections that work under alternating, impact loads, or in low-temperature and high-pressure vessels.
The joint connected by welding method is called a welding joint, which mainly plays a role in connecting and transmitting force. The welding joint consists of three parts: the weld seam, fusion zone, and heat affected zone. As shown in the figure "Welding Joint", the pre welding preparation work for the butt joint is simple, easy to assemble, and the welding deformation and residual stress are small. Therefore, it is often used in the installation of joints and unimportant structures on the construction site.
