Stainless steel elbows will not suffer from erosion, pitting, rust or wear. Stainless steel remains one of the strongest metallic materials used in construction. Because stainless steel has excellent corrosion resistance, it can permanently maintain the integrity of structural components as designed in engineering. The chromium-containing stainless steel pressed elbow also combines mechanical strength and high ductility, making it easy to process and manufacture components, and can meet the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on their surfaces. Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, causing the rust to continuously expand and eventually form holes. The surface of carbon steel can be protected by using paint or electroplating with oxidation-resistant metals such as zinc, nickel and chromium. However, as is known to all, this protection is only a film.
In addition, after the head is pushed, the outer diameter of the front end is usually larger, and it needs to be shaped through a shaping die. The entire mold is actually a press, which requires a set of molds, two semi-circular arcs, one at the top and one at the bottom. The outer diameter after shaping meets the size requirements of the finished product. The wall thickness is controlled based on the wall thickness of the incoming material. The wall thickness tolerances of the elbow and the pipe are the same, both being±12.5%. In addition to chromium, commonly used alloying elements also include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements for the structure and performance of stainless steel pressed elbows in various applications.
Stainless steel elbows are made of steel that is resistant to corrosion by weak corrosive media such as air, steam and water, as well as by chemical corrosive media such as acids, alkalis and salts. Also known as stainless acid-resistant steel. In practical applications, steel resistant to weak corrosive media corrosion is often referred to as stainless steel pressed elbow, while steel resistant to chemical media corrosion is called acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical medium corrosion, while the latter generally has non-rusting properties. Chromium-containing stainless steel elbows also combine mechanical strength and high ductility, are easy to process and manufacture components, and can meet the needs of architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on their surfaces.
Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, causing the rust to expand continuously and eventually form holes. The surface of carbon steel can be protected by using paint or electroplating with oxidation-resistant metals such as zinc, nickel and chromium. However, as is known to all, this protection is only a film. The corrosion resistance of stainless steel elbows depends on the alloying elements contained in the steel. Chromium is the fundamental element that endows stainless steel pressed elbows with corrosion resistance. When the chromium content in the steel reaches1.2％When left and right, chromium reacts with oxygen in the corrosive medium to form a very thin oxide film (self-passivation film) on the surface of the steel, which can prevent further erosion of the steel substrate. Elbow pipe fittings have different production processes and procedures. During processing, production and processing need to be carried out according to certain conditions. When processing elbow pipe fittings of different natures, some matters need to be noted.
Taking alloy elbows as the base, if long-radius alloy elbows are to be made, the first step is to select the specifications of the steel pipe, propose the pipe material, and choose high-quality steel pipes for production. Alloy elbows have a certain expansion rate. Through theoretical calculation, the general expansion rate is33%－35%In between, push it back. Short radius219mmThe general expansion ratio of is50%. After selecting the raw materials, cut the alloy elbow according to its specifications and then consider the radius of curvature,For example90°The curvature of the elbow can be used to calculate how much material is needed for processing90°The elbow. It can be calculated through theoretical calculation, and then the cutting is carried out with this length as the fixed scale. Finally, the materials are subjected to hot pressing. Because if some elbows are not handled properly, they will twist, which is not allowed.
Foshan Weilihuang Trading Co., Ltd. is a leading manufacturer specializing in the production and sales of international and domestic stainless steel hardware accessories and its own brands. The company is located at Tianjinli Hardware Accessories Center, Lanshi 2nd Road, Chancheng District, Foshan City, Guangdong Province8seat10-12The number (i.e., the main entrance of the market) has an abundant supply of goods, a complete range of varieties, wide coverage, favorable prices, and stable and superior quality!
The company uses high-quality stainless steel and exquisite craftsmanship to ensure there are no weld marks at the interfaces. Its products feature novel designs, elegant craftsmanship, and long-lasting durability. The company has always adhered to the principle of quality first and reputation first. It is equipped with mature production facilities and has strong technical strength, thus ensuring the quality of its products. The company is willing to make unremitting efforts to join hands with our customers to create a win-win situation and provide high-quality products for our partners.
