The principle of submerged arc welding: Submerged arc welding is the use of arc thermal energy welding, and manual welding rod arc welding is different: the submerged arc welding of the welding wire is exposed, there is no coating, submerged arc welding is indeed pre-paved welding flux to be welded The submerged arc welding wire extends into the flux, and the arc is formed under the flux. The main purpose of pre-bending is to solve the rebound problem of the tube blank, because the size of the rebound directly affects the intrinsic quality of the steel tube; the main purpose of the sizing is to obtain a more accurate diameter of the tube, because the diameter control is the main quality index of the steel tube. Welding steel with spiral welds.

The formation process of the submerged arc welding is such that the welding wire is in contact with the workpiece.The following is a brief discussion on the formation process and characteristics of submerged arc welding of galvanized galvanized spiral steel pipes with 630*3 ribs. Before forming, the steel strip is leveled, trimmed, edged, surface cleaned and pre-trimmed. After a variety of rigorous scientific inspections and tests, the use situation is relatively safe and reliable.the general low-pressure fluid transport is hot rolled steel strip coiled tube, regular temperature spiral molding, using double-sided automatic submerged arc welding or single-sided welding method for water, gas, air and steam and other general low-pressure fluid transport Submerged arc welded steel pipe.

Around the arc, the flux melts to form a cavity. This process is performed under the flux, so we can't see it with the naked eye. It is used for welding with double-sided submerged arc welding and is mainly used for spiral seam welded steel pipe devices for pressure fluid transportation. It also provides the necessary conditions for the delivery of the China 2311 steel Company spiral welded pipe plant, so that the production time of the large spiral steel pipe is guaranteed, so it is still widely used. The solid diameter of the steel pipe is large, the transmission efficiency is also high, and it can effectively save the investment of laying pipelines. It can be seen with X-ray photography. the hot rolled steel strip is used as the tube blank, which is often formed by spiral molding and is made of double-sided submerged arc welding or high-frequency welded steel pipe.

Megosztás a facebookon