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How to Detect Whether Carbon Dioxide and Argon Mixture Meet the Standard
2024-10-12
The role of carbon dioxide and argon gas mixtures
The large amount of spatter generated during industrial welding is due to the use of carbon dioxide gas for shielded welding, and the emergence of argon and carbon dioxide mixed gas (referred to as argon gas) shielded welding solves this problem.
Argon and carbon dioxide mixed gas shielded welding compared to pure carbon dioxide gas shielded welding, to further improve the welding efficiency and welding quality, while reducing a large number of spatter..
First of all, the advantages of argon and carbon dioxide mixture in the welding process
2: Pure carbon dioxide is a gas heavier than air. It has a high thermal conductivity properties, the arc is wide, the weld is also wide. Carbon dioxide has a strong oxidizing property, and it produces a large spatter during welding. Argon is also a gas heavier than air. It is used for welding can effectively protect the droplet and weld pool, improve the smoothness of the welding surface, less spatter, but the argon generated by the ionization arc is narrow, and the arc is unstable. Therefore, these two gases have different advantages and disadvantages when used alone for welding. The mixture of carbon dioxide and argon makes the advantages of the two gases in welding fully utilized, while avoiding their respective disadvantages. The argon component improves the quality of the welding surface and reduces the spatter caused by carbon dioxide gas. The carbon dioxide component enhances the stability of the arc and improves the heat conduction, thereby increasing the mechanical properties of the welding material. The mixture of argon and carbon dioxide is an ideal welding shielding gas.
2: the use of pure carbon dioxide welding is generally not easy to produce excessive injection. Because it makes the welding wire in the welding process of the droplet is larger, in the droplet to get rid of the surface tension down into the welding pool in the process of an upward electromagnetic force, because the droplet is large, so the electromagnetic force is unbalanced on the droplet, so that a large number of droplets in the fall will fall to the outside of the welding pool, it produces a large amount of splash. Argon and carbon dioxide gas mixture can produce excessive jet, it makes the wire droplets become more and more small, when the small droplets fall, the electromagnetic force acting on the droplets is much more balanced than the large droplets. In this way, a large number of small molten droplets will transition to the molten pool, and the generation of spatter will be greatly reduced. The spatter will be reduced, so that the welding workers do not need to stop and clean the welding nozzle frequently, and there is no need to use special workers to clean the spatter on the seam road. The mixed gas welding greatly improves the welding production efficiency. The use of argon and carbon dioxide mixture welding reduces spatter than pure carbon dioxide gas welding.
Detection of Carbon Dioxide and Argon Mixture
Qingdao Haitel HT-BH pump suction carbon dioxide detector has a very clear large liquid crystal display and sound and light alarm prompts. It is an intrinsically safe equipment that can continuously detect the concentration of the measured gas and is suitable for explosion-proof places. The detector is an intrinsically safe product, which meets the general requirements of the national executive standard GB3836.2-2000 and the GB3836.4-2000 intrinsically safe type.
HT-BH pump suction carbon dioxide detector adopts imported intelligent sensor, stable and excellent performance, powerful sound and light alarm, easy to use. The sensor responds quickly to the detected gas and can give you an alarm in time when a hazard occurs. It is a sensitive and alarm detector for detecting gas in today's industrial field. And can adapt to a variety of extreme working environment. Strong explosion-proof flame-retardant shell, light weight, easy to carry, and withstand impact. To ensure that in a very adverse working environment can also detect dangerous gases and prompt the operator to prevent. It is widely used in metallurgy, coal, steel mills, petroleum, chemical industry, papermaking, electric power, medicine, food processing, tunnels, tunnels and other places!
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