Production process of butt welded elbows
Production process of butt welded elbows
Butt welded elbows have different production processes and procedures, and need to be produced and processed according to certain situations during processing. Different types of elbow fittings need to be noted during processing. To make long radius alloy elbows, it is necessary to first select the specifications of the steel pipe, propose the pipe material, and use high-quality steel pipes for production. Alloy elbows have a certain expansion rate. According to theoretical calculations, the expansion rate is generally between 43% and 55%, which can be reversed. The general expansion rate for a short radius of 500mm is 30%. After selecting the raw materials, cut the material according to the specifications of the welded elbow, and then consider the curvature radius. For example, for a 90 ° elbow, the curvature can be used to calculate how much material can be cut to produce a 90 ° elbow. It can be calculated through theoretical calculations, and then cut using this length as a fixed length. Finally, heat push the material. Because some bends may become twisted if not handled properly, which is not allowed.
The standard for welding elbows lies in the height issue. In fact, the height of the elbow is the most serious. As a manufacturer, we usually determine the height of the elbow during the processing. After ensuring it, the height of the elbow naturally meets the requirements. Once it is determined, the first step is to ensure it. The parallelism of our caliber and elbow caliber is also the strictest. Usually, if the parallelism of a general elbow is determined during the machining process of a lathe, then the elbow must be machined with a parallel ruler at any time. The surface of the elbow, as we can see above, has undergone serious repairs. The repair of the elbow is not a problem, but the key is that it must be cleaned before leaving the factory to ensure the quality of the elbow. We must repair it to look the same as the picture before it can leave the factory.
