What is a carbon dioxide gas shielded welding machine? What are its advantages?
Answer: Carbon dioxide gas shielded welding is a welding method that uses mechanical wire feeding and automatically sends out the carbon dioxide gas shielded welding molten pool. Because of its high efficiency, low power consumption, high weld quality, and good overall economic benefits, it is the current state A new high-efficiency and low-consumption welding method that is vigorously promoted. Compared with other arc welding methods, carbon dioxide welding has the following advantages:
1) High production efficiency: Because of its strong arc penetration, high penetration, and high melting rate of the welding wire, the deposition speed is fast, and the production efficiency is much higher than traditional manual electric welding, which can reach 1-3 times, that is, in some occasions, it can be equivalent to the workload of two to four people in the original manual electric welding. When other conditions remain unchanged (no increase in personnel, no increase in wages and taxes, etc.), significant economic benefits can be added to the enterprise. (Tangshan Mining and Metallurgical Machinery Factory users report: Since the use of CO2 gas shielded welding, work efficiency has been greatly enhanced. At present, almost no one wants to use AC welding machines. The fastest CO2 welding machine can use two reels of welding wire, about 40kg. The AC welding machine can use about two packs of welding rods at the fastest a day, about 10kg, and after removing the electrode head and coating, the actual welding metal is about 5kg)
2) Low welding cost: The carbon dioxide gas source is wide and the price is low. The deposition rate of carbon dioxide welding wire is much higher than that of manual welding. (Because there is no welding slag and fumes, there is no need to discard the welding rod head, so basically one ton of welding wire can be equivalent to Using two tons of welding rod) its welding cost can be reduced by 40-50% compared with traditional manual welding or submerged arc welding.
3) Low energy consumption: Compared with carbon dioxide welding and electrode arc welding, carbon dioxide welding consumes only about 70% of the electric energy per meter of butt welds of low carbon steel plates with a thickness of 3 mm. For butt welds of 25 mm thick low-carbon steel plates, carbon dioxide welding consumes only 40% of the electric energy per meter of ordinary manual welding. Therefore, carbon dioxide welding is a very good energy-saving welding method.
4) Wide range of application: Carbon dioxide welding can be adapted to welding at any position in space; because carbon dioxide is decomposed into oxygen and carbon monoxide under the action of the arc, it will absorb a lot of heat during the decomposition, which has a cooling effect on the molten pool metal. Therefore, carbon dioxide welding is more suitable for vertical welding and overhead welding than manual welding, and the molten metal is not easy to flow.
At the same time, because oxygen can burn part of the carbon and other harmful elements in the weld metal composition at high temperatures, carbon dioxide welding can weld cast iron. After burning some of the carbon and harmful elements in the cast iron, the performance of the weld metal Closer to pure steel.