Spiral steel pipe seam weld porosity affects not only dense, causing pipeline leak, and will become a point of corrosion-induced, severely reducing weld strength and toughness. Which is too high welding speed than the current does not fit easily cause undercut defects. Penetration of the poor.
Involved in the welding slag. General weld factor control in 1. Inside and outside the weld metal overlap is not enough, and sometimes lack of penetration.3-1. Clear device installed in the best location and disc cutting edge milling machines, structure of the device is the active wire wheel while two position adjustable gap down, up and down the compression plate edges. Steel plate edge should be set rust and burrs removal device to reduce the possible porosity. Is involved in the remaining part of the slag welding slag in the weld metal. Undercut under welding speed, current, voltage, and other conditions resulting in inappropriate.5, take the maximum thick-walled spiral pipe, thin-walled take minimum.Spiral welded steel pipe defect prone areas have porosity, thermal cracking, and undercut. To eliminate this crack, usually in the extinction of the arc and plate fitted and welded at the ends of the coil can be reversed and the spiral welded steel pipe welded into the stack. To avoid uncoiling leveling off of iron oxide and other debris into the molding process, the board should be set up cleaning device. In the process should be appropriately reduced welding speed or increase the current, thereby delaying the crystallization rate of the weld metal bath, in order to escape the gas, while the delivery position is unstable if the strip should be timely adjusted by trimming the front to prevent the frequent After the bridge or bridge to maintain shape, causing gas to escape difficult. In submerged arc welding, the inner weld hot cracking, and particularly in the arc of the arc crater cracks occur easily. This situation is called a lack of penetration degrees. Undercut is a V-shaped groove along the edge of the seam weld centerline. To reduce the effects of magnetic blow, so that the connector position on the workpiece away from the welding cable welding may only terminal part of the welding cable to avoid the secondary magnetic field generated in the workpiece. Heat stress is a big crack in the weld when the weld metal is high or when the most prone. Weld’s form factor is too small, narrow and deep weld shape, gas and inclusion is not easy to Factory for producing pipe clamp https://www.zj-hardware.com leak out, easy to form pores and slag.
Involved in the welding slag. General weld factor control in 1. Inside and outside the weld metal overlap is not enough, and sometimes lack of penetration.3-1. Clear device installed in the best location and disc cutting edge milling machines, structure of the device is the active wire wheel while two position adjustable gap down, up and down the compression plate edges. Steel plate edge should be set rust and burrs removal device to reduce the possible porosity. Is involved in the remaining part of the slag welding slag in the weld metal. Undercut under welding speed, current, voltage, and other conditions resulting in inappropriate.5, take the maximum thick-walled spiral pipe, thin-walled take minimum.Spiral welded steel pipe defect prone areas have porosity, thermal cracking, and undercut. To eliminate this crack, usually in the extinction of the arc and plate fitted and welded at the ends of the coil can be reversed and the spiral welded steel pipe welded into the stack. To avoid uncoiling leveling off of iron oxide and other debris into the molding process, the board should be set up cleaning device. In the process should be appropriately reduced welding speed or increase the current, thereby delaying the crystallization rate of the weld metal bath, in order to escape the gas, while the delivery position is unstable if the strip should be timely adjusted by trimming the front to prevent the frequent After the bridge or bridge to maintain shape, causing gas to escape difficult. In submerged arc welding, the inner weld hot cracking, and particularly in the arc of the arc crater cracks occur easily. This situation is called a lack of penetration degrees. Undercut is a V-shaped groove along the edge of the seam weld centerline. To reduce the effects of magnetic blow, so that the connector position on the workpiece away from the welding cable welding may only terminal part of the welding cable to avoid the secondary magnetic field generated in the workpiece. Heat stress is a big crack in the weld when the weld metal is high or when the most prone. Weld’s form factor is too small, narrow and deep weld shape, gas and inclusion is not easy to Factory for producing pipe clamp https://www.zj-hardware.com leak out, easy to form pores and slag.
