Function of anti-seismic spring supports and hangers
The subdivision of spring supports and hangers can be divided into spring hangers and spring supports. It is believed that everyone is familiar with spring supports and hangers, but in what state can spring supports and hangers function?
How does it resolve such contradictions? Spring hanger is a mechanical installation designed according to the principle of moment balance. It can be used to suspend and support the pipeline and equipment. At this time, when the pipeline or equipment has displacement, it only needs to be within the pre selected load displacement.
Spring hanger is a mechanical installation designed according to the principle of moment balance. The pipeline and equipment can be suspended and supported through it. At this time, when the pipeline or equipment has displacement, it only needs to be within the pre selected load displacement. No matter how large the displacement changes, they can always obtain a constant support force through the spring support. Thus, new additional pressure will not be brought to the pipeline or equipment, so that serious equipment and safety accidents can be prevented.
In general, spring supports and hangers should be considered for important parts with large thermal displacement. Because of this characteristic of constant force spring supports and hangers, they are more and more widely used in thermal power installation of ordinary thermal power plants, nuclear power plants, petroleum and chemical industries.

Precautions for manufacturing pneumatic butterfly valve
During the welding process, the corrugated pipe, reinforcing ring and wire mesh sleeve are easy to show the phenomenon of steel wire welding (over burning or no welding). When the hose is installed into the pipeline, the steel wire rope bears uneven pressure, and the scattered steel wire rope will constitute the damage of the corrugated pipe drum. In the pneumatic butterfly valve, the longitudinal welds of the corrugated pipe are hollow welding, air holes and loose branches, reducing the effective area of the corrugated pipe wall thickness
The lack of strength can cause weld cracking. The welding of carbon steel and stainless steel parts forms a typical small area of anodized parts, and the cathode parts are exposed to a large area of poor environment, which is easy to lead to rapid corrosion failure of materials. Therefore, we should strengthen the discussion of welding technology and the selection of welding materials, and strengthen the inspection of welding quality to improve the reliability of products
In the wave rolling process, regular microcracks are easily generated on the inner surface of the wave crest. In the welding and forming process, microcracks crack on the inner surface of the hose. In the subsequent assembly testing and application, the microcracks grow wearily and eventually fail. The improvement of material processing and welding technology can avoid the generation of microcracks
The main role of heat treatment is to improve the cutting performance and processing accuracy of metal materials, improve the fracture toughness of metal materials, and reduce the cracking of metal materials. If the heat treatment is not complete, the quality of products will be affected. For example, the solution heat treatment temperature of austenitic stainless steel is about 1080 degrees centigrade. If the solution treatment is not complete, the carbide is not well dissolved, and the material itself has carbide precipitation, It will reduce the corrosion resistance and toughness of materials
In order to reduce the defects caused by heat treatment, the conditions for crack generation should be eliminated, the surface compressive stress should be increased, the quality of metal materials should be improved, and alloy elements should be properly added