The melting temperature of the elbow of stainless steel pipe fittings is also called the melting point, which is an important index to reflect the melting property of the protective slag, and has a great influence on the thickness of the slag film and the heat flow of the mold. Under normal circumstances, the thickness of the slag film increases with the melting temperature of the protective slag. In addition, the ratio between the thermal resistance of billet shell and the thermal resistance of slag film is directly affected by the melting temperature of the protective slag. The higher the melting temperature, the smaller the thermal resistance of billet shell and the larger the thermal resistance of slag film. The left and right extruding punches in hydroforming should adhere to the accuracy of synchronous movement. The synchronicity of punch motion affects the symmetry of deformation and has a strong influence on the size of deformation. If the movement of the punch cannot be synchronized, large shear deformation will occur in the transition region, which is not conducive to large deformation. Therefore, measures should be selected to synchronize the motion accuracy.
In order to ensure that there is always a corresponding thickness of liquid slag film along the entire length of the mold, the melting temperature of the protective slag should be lower than or equal to the surface temperature of the billet shell at the lower mouth of the mold, which is related to the length of the mold, the drawing speed and the cooling water amount. In order to keep the slag moving along the shell in the mold, the corresponding thickness of the liquid slag layer is always maintained. In continuous casting production, the melting temperature of the protective slag is usually controlled below 1200℃, and the melting temperature of most of the slab continuous casting protective slag is controlled between 1050-1200℃.
In order to advance the welding quality, the end is turned into a groove, leaving the corresponding view point, with the corresponding edge, this requirement is also more strict, how thick the edge, how much the view point and error planning have rules. The surface quality and mechanical properties of the base are the same as those of the pipe. In order to facilitate welding, the steel grade of the pipe fittings and the pipe to be joined is the same.
Stainless steel elbows are all pipe fittings to be surface treatment, the surface of the surface of the oxide sheet after shot peening spray, and then paint. This is for the import and export needs, in addition, in the country is also to facilitate transportation to avoid rust and oxidation, to do this work. It is the requirements for packaging on small pipe fittings, such as entrances and exits, they need to be wooden cases.
