What are the manufacturing process and forming steps of stainless steel elbow
Zhejiang Lidi Pipe Industry Co., Ltd. is a professional manufacturer of stainless steel elbow, tee, reducer, pipe cap, stainless steel flange. The product qualification has been certified by TS / ISO9001 / CE / DAS, and the Executive Standards are national standard, American Standard, Japanese standard, German standard and European standard, with guaranteed quality. So how is stainless steel elbow produced? What are the processing steps? The management industry here will explain to you:
First of all, the first step we need to do is to cut the raw material pipe, calculate according to the distance from the center of the product to the end face, and then put it on the lathe for orderly cutting.
Secondly, we dust the cut pipe. The role of the process is lubrication to ensure the appearance of the pipe surface. If there is no dust, there will be obvious streaks on the pipe surface.
After finishing the ash on the pipe, there is the pressing link, which is divided into mandrel pushing system and ball pushing system.
Then the elbow is annealed, heated to a certain temperature and kept for a period of time to make it cool slowly. Annealing is one of the factors that determine the quality of the elbow after forming. It can improve the mechanical properties of the hot pressed elbow, reduce the residual stress, reduce the hardness, improve the plasticity and toughness, and improve the cutting performance.
The next step is pickling. The corrosion resistance of stainless steel pipe mainly comes from the reaction between chromium and oxygen, which will form a dense protective layer on its surface. The function of pickling is to make this reaction happen in advance and improve the corrosion resistance of stainless steel pipe fittings. In addition, the oil stain on the surface of the pipe and other substances contaminated in the production will be removed during the pickling process.
Then, the product is fully polished, using the mechanical, chemical or electrochemical effect to reduce the surface roughness of the workpiece, in order to obtain a bright, flat surface processing method.
Rolling sand treatment, the pipe products for comprehensive rolling sand, scouring the surface of the product, to remove the burr, it will also remove some of the surface rust.
In the first pickling, our products are pickling after 2 times, in order to make the corrosion resistance of products better, in order to achieve strict factory standards.
Finally, chamfering is carried out. In order to remove the burr caused by machining and facilitate the assembly of parts, chamfering is made at the end of parts.
Stainless steel pipe on the production and processing is completed, welcome to cooperate with customers to consult our products