Q310GNH weathering steel sheet is widely used for welding. Q315NS low-alloy sulfuric acid dew point corrosion resistant steel mainly relies on Cu, Cr, Sb elements to improve corrosion resistance. Considering the matching of composition, strength, and corrosion performance, manual arc welding now mainly uses ND steel special electrode (09CrCuSb) for welding, and there are also related argon arc welding and submerged arc welding welding materials on the market. During the welding process, the workpiece and the solder melt to form a molten area, and the molten pool is cooled and solidified to form a connection between the materials.
Q310GNH weathering steel sheet has been forged and welded for hundreds of years. During this process, pressure is usually applied. There are many energy sources for welding, including gas flame, electric arc, laser, electron beam, friction and ultrasonic waves.
Q310GNH steel sheet is not only beautiful in appearance, but also can be perfectly combined. Weather-resistant steel J507MoW is a low-hydrogen sodium type coating, low-alloy steel welding rod resistant to H, N, NH3 corrosion. Adopting DC reverse connection, all positions can be welded. The deposited metal has good corrosion resistance and good welding performance. Used for welding low alloy steels containing Mo, W, Nb, V and other elements that are resistant to H, N, NH3 high temperature and high pressure corrosion, such as 10MoWVNb high temperature and high pressure hydrogen corrosion resistance or high temperature and high pressure resistance H, N, NH3 corrosion steel welding.
Q310GNH steel is mainly used for steel structures exposed to the atmosphere for a long time, such as railways, vehicles, bridges, and towers. It is used to manufacture structural parts such as containers, railway vehicles, oil derricks, seaport buildings, oil production platforms, and containers containing hydrogen sulfide corrosive medium in chemical petroleum equipment.
Q310GNH steel sheet is widely used in various buildings and industrial facilities. It prevents the rust from spreading and developing, and protects the substrate under the rust layer to slow down its corrosion rate. The amorphous spinel type oxidation with a thickness of about 50μm-100μm formed between the rust layer and the substrate is directly produced by adding some weathering elements (usually CU, P) to blast furnace molten steel (normal purity) of ordinary steel. The corrosion resistance of these weathering steels is only 1.5-3 times that of ordinary steels.
