What is the reason for the corrosion resistance of stainless steel industrial pipe? Do you know?

Time:2022-04-22 16:52:03

What is the reason for the corrosion resistance of stainless steel industrial pipe? Do you know? As we all know, stainless steel industrial pipe is a kind of metal building materials, with the growth of science and technology and the progress of the period, has been widely welcomed by people. Because of its good resistance to decay, stainless steel enables the layout components to permanently link to the completeness of the project plan. Chromium stainless steel is also set of mechanical strength and high extensibility, easy to manufacture, meet the needs of architects and layout planners, so what are the reasons for the corrosion resistance of stainless steel industry pipe?

1, all metals and oxygen in the atmosphere are held in response to the appearance of the formation of oxide film. Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, causing the corrosion to expand and then form holes. Carbon steel may be coated with paint or an oxidation-resistant metal (such as zinc, nickel and chromium), but, as is known, this cover is only a film. If the shield is broken, the steel beneath it begins to rust. The corrosion resistance of stainless steel industrial pipe depends on chromium, but because chromium is one of the components of steel, it is not the same.

2. When the chromium content reaches 10.5%, the atmospheric corrosion resistance of steel increases obviously, but when the chromium content is higher, the corrosion resistance can still be improved, but it is not obvious. The reason is that alloying steel with chromium changes the paradigm of surface oxides to those similar to those formed on pure chromium metals. This precision adhesion of chrome-rich oxide shields the appearance against a burst of oxidation. This oxide layer is extremely thin, through which you can see the natural light of the steel appearance, so that the stainless steel industrial pipe has a peculiar appearance. Moreover, if the surface layer is destroyed, the exposed steel surface will be self-repairing with the atmosphere in response to the sound, re-forming this "passivation film", continuously playing a protective role.

3, in the production process, the tube will be symmetrical extrusion, and then online burning solid melting annealing, stainless steel industrial tube appearance becomes very smooth, and smooth appearance is not easy to scale, with anti-scaling results. This is not only conducive to heat dissipation but also unnecessary washing, saving time, effort and money. Secondly, welded pipe is a plate of deep processing products, the advantage of symmetrical wall thickness is incomparable, but also arbitrary ruler, high accuracy.

4, with cold rolled coil according to the specifications of the longitudinal shear, forming, after the multi-gun argon arc welding machine welded into the tube, and then cold rolled (drawn), so that the performance of the weld can be fundamentally consistent with the base material, product quality significantly improved.