What Is The Process Of Stainless Steel Elbow
Stainless Steel Weld Elbow is a kind of pipe fitting used at the bend of the pipeline. It accounts for a large proportion of all the pipe fittings used in the pipeline system, about 80%. Usually, different forming processes are selected for stainless steel elbows of different materials or wall thicknesses. At present, the commonly used seamless stainless steel elbow forming processes in manufacturers include hot pushing, stamping, extrusion, etc.
The process flow of stainless steel elbow production, if you make a long radius stainless steel elbow, you must first select the specifications and propose the pipe material. The expansion rate, through theoretical calculation, the general expansion rate is between 33% and 35%, and it is reversed. The general expansion rate of the short radius of 219mm is 50%. After selecting the raw materials, cut the materials according to the specifications of the stainless steel elbow, and then consider the radius of curvature. For example, a 90° stainless steel elbow, its curvature can be used to calculate how long the material can be used to process a 90° stainless steel elbow. It can be calculated through theoretical calculation, and then cut with this length as the fixed length. The material is hot pushed. Everyone may have seen the push machine, which is actually very simple. It is a horn-shaped core head or core rod, which changes from thin to thick, and the pushing process is a process of expanding the diameter with bending.
What are the technical requirements for stainless steel pipe fittings?
In order to improve the welding quality, the ends are all beveled, leaving a certain angle and a certain edge. This requirement is also relatively strict. The thickness of the edge, the angle and the deviation range are all specified. The geometric dimensions have many more items than pipe fittings. The surface quality and mechanical properties are basically the same as those of pipes. For the convenience of welding, the steel type is the same as that of the connected pipe.
All stainless steel pipe fittings must undergo surface treatment, and the iron oxide on the inner and outer surfaces is sprayed off by shot peening, and then coated with anti-corrosion paint.
