Stamping and welding elbow, which is formed by stamping a half-ring elbow with a stamping die from a plate made of the same material as a pipe, and then assembling and welding two half-ring elbows. Because of the different welding standards of various pipelines, the semi-finished products are usually fixed by spot welding in groups, and the on-site construction is welded according to the weld grade of the pipeline, so it is also called two-and-a-half welded elbow.
(1) The stamping process has high production efficiency, convenient operation and easy realization of mechanization and automation. This is because the stamping process is completed by the stamping die and stamping equipment. The number of strokes of an ordinary press is
9 degrees per minute, which can reach dozens of times, and the high-speed pressure can reach hundreds or even thousands of times per minute, and a stamping piece may be obtained for each stamping stroke.
punching elbow
⑵ Generally, punching does not generate chips and scraps, and the consumption of materials is less, and other heating equipment is not needed, so it is a material-saving and energy-saving processing method, and the cost of stamping parts is lower.
(3) Parts with large size range and complex shapes can be processed by stamping, such as stopwatches as small as clocks, side rails and panels of automobiles, etc. In addition, the cold deformation and hardening effect of materials during stamping makes the stamping strength and rigidity higher.
(4) During stamping, because the die ensures the accuracy of the size and shape of the stamping parts, and generally does not damage the surface quality of the stamping parts, and the life of the die is generally long, the stamping quality is stable, the interchangeability is good, and it has the characteristics of "identical".
The forming process of stamping elbow is complicated, and it needs to be welded according to different materials and uses, and gradually formed under certain pressure. The forming of stamping elbow needs to be carried out according to a certain process, and the corresponding flow process should be strictly observed, otherwise the produced stamping elbow will have quality problems. According to requirements, a circular ring shell can be cut into four 9 elbows or six 6 elbows or elbows with other specifications. This process is suitable for
manufacturing large-scale push elbows with any specifications, and it is an ideal method for manufacturing large-scale push elbows.
this process forming method is used in the production of different elbows, showing good use value in different fields, so that the process has good value in the production of different elbows.
The advantages of the forming process of large-scale punching elbow mainly lie in the following aspects:
Punching elbow
(1) It does not need tube blank as raw material, which can save the cost of tube-making equipment and die, and can obtain pushed elbow with arbitrary large diameter and relatively thin wall thickness. The raw material of this kind of punching elbow is special, and it does not need to add tube blank raw material, so it is easy to control during processing.
(2) The blank for processing the punching elbow is a flat plate or a developable curved surface, so the blanking is simple, the accuracy is easy to ensure, the assembly and welding are convenient, the raw materials are easy to control during processing, the operation is simple, there are no complicated procedures, and the welding and assembly are convenient.
(3) Due to the above two reasons, the manufacturing cycle can be shortened and the production cost can be greatly reduced. Because it does not need any special equipment, it is especially suitable for processing large stamping elbows on site.