The method of mechanical drawing is to increase the surface roughness by drawing the plug. The surface structure of stainless steel pipeline can be improved, but other aspects will not be optimized. This is the most basic surface treatment technology, and the roughness of this method also lays a good foundation for further surface treatment technology.
Mechanical grinding is to improve the surface roughness of stainless steel pipe by precision grinding, which can optimize the surface structure, but will not improve the shape and other aspects.
Fabric decoration is often used in stainless steel polishing industry to increase the surface brightness of stainless steel. Although the radium value of this process is good, a large number of cracks can still be seen under electron microscope, and the actual specific surface area becomes larger, and some ferrite and martensite structures will be separated. There are many impurities on the surface of the pipeline, such as abrasive particles. Due to the use of polishing paste, a large amount of energy will be formed in the original depression, resulting in an increase in the number of media. This kind of pipeline is usually not used in sensitive corrosive media, such as optoelectronics and biopharmaceuticals.
After pickling or passivation treatment, the surface roughness of stainless steel pipeline will not be improved, but the residual abrasive particles can be removed and the energy level can be reduced, but the number of intermediate layers cannot be reduced.
Light-burning passivation process refers to the stainless steel pipeline after high-temperature heat treatment, in the state of hydrogenation or vacuum, eliminating internal stress, producing a passivation film on the surface of the pipeline, optimizing the structure and reducing energy consumption without increasing the surface roughness.
Subelectrochemical polishing is an electrochemical polishing method based on surface treatment of barium stainless steel plate. It is a slight electrolytic polishing process, which reduces the surface area and the thickness of passivation film as much as possible, thus improving the corrosion resistance, improving the surface morphology and reducing the energy level. After this surface treatment, the whiteness of stainless steel pipeline is not very high, but the surface quality has been greatly improved, no particles will be formed, and the iron and iron oxide components on the surface will be reduced.
Electrochemical polishing is realized by electrochemical polishing, which can greatly improve the surface morphology and structure of stainless steel pipes and minimize the actual surface area of stainless steel pipes. The surface of the pipeline is closed and there is a thick chromium oxide film. For stainless steel alloys with energy close to normal level, the amount of medium will be minimized.