Forming process of stainless steel stamping elbow

The basic technological process of large stainless steel stamping elbow forming technology is: first, a polygonal ring shell with a polygonal cross section or a polygonal fan-shaped shell with closed ends is applied, and when the interior is filled with pressure medium, internal pressure is applied, Under pressure, the cross section gradually changes from a polygon to a circle and becomes a circular ring shell.

The forming process of the stainless steel stamping elbow is complicated, which needs to be welded according to different materials and uses, and gradually formed under a certain pressure. The forming of stamping elbows needs to be carried out in accordance with certain procedures, and strictly abide by the corresponding process procedures, otherwise the carbon steel stamping elbows produced will have quality problems.

The basic process of the stainless steel stamping elbow is: firstly welding a polygonal ring shell with a polygonal cross section or a polygonal fan-shaped shell with closed ends, and after the interior is filled with pressure medium, the stainless steel elbow applies internal pressure, and the internal pressure acts The lower cross section gradually changes from a polygon to a circle and becomes a circular ring shell. According to requirements, a circular ring shell can be cut into 4 90-degree elbows or 6 60-degree elbows or other specifications of elbows. This process is suitable for manufacturing any specifications where the ratio of the middle diameter of the elbow to the inner diameter of the elbow is greater than 1.5. Large elbow.

The advantages of the stainless steel elbow manufacturing process are mainly manifested in the following aspects:

1. No tube blank is required as raw material, which can save the cost of tube making equipment and mold, and can obtain any large diameter carbon steel elbow with relatively thin wall thickness.

2. The blank is a flat plate or a stretchable curved surface, so the blanking is simple, the accuracy is easy to ensure, and the assembly and welding are convenient.

3. Stamping elbows are suitable for piping systems in the petroleum, natural gas, chemical, hydropower, construction and boiler industries.

The stamping elbow is made of a half-shaped ring elbow by using a stamping die of the same material as the pipe, and then the two half-ring elbows are assembled and welded. Due to the different welding standards for various types of pipelines, the semi-finished products that are spot-fixed are usually shipped in groups. The on-site construction is welded according to the grade of the pipeline weld, so it is also called a two-half welding elbow. The processing of stainless steel elbows is the production technology of product parts with a certain shape, size and performance by means of the power of conventional or special stamping equipment, so that the sheet material is directly deformed and deformed in the mold. Sheet metal, mold and equipment are the three elements of stamping processing. Stamping is a method of metal cold deformation processing.