Stainless steel plate in the first place to have good x52 line pipe corrosion resistance, we should consider the application of stainless steel plate, according to the specific requirements to determine whether corrosion specifications.
The corrosion resistance of stainless steel plate is relative, is often said that the corrosion resistance of stainless steel plate with rust and corrosion, refers to the condition must be (medium, impurities, pressure, concentration, temperature, speed and other factors), not under any circumstances without rust corrosion.
When we choose stainless steel plate, the first consideration of corrosion resistance, this is because the material research is usually focused on stainless steel usually corrosion resistant function.
Stainless steel equipment, if component failure due to corrosion, should be cut, corrosion damage analysis, it is found that after the way.
Stainless steel plate when bending 90 ℃, stainless steel plate can be used as a room wall, ceiling, car plate, trunk board, building decoration, signs and other decoration.
Stainless steel are familiar, now already can make color under the technology of stainless steel plate, the colorful become good decorative material, relatively onefold tonal, the color can have more decorative effect, and its corrosion resistance is strong, high mechanical properties more strengthened the practicability of stainless steel plate, color, colour and lustre the characteristic that will have certain color changes is also a bonus, this is also the cause of the stainless steel plate is applied widely in adornment metope.
People often stainless steel sheet with magnet adsorption, x56 line pipe verify its quality and authenticity, not without magnetic absorption, think is good and true; Magnetic suction, is believed to be fake fake. Actually, this is a very one-sided, not real wrong about it.
There are many types of stainless steel plate, the temperature according to the organizational structure can be divided into several categories:
1. Austenite size: such as 304, 321, 316, 310, etc.;
2. Martensite or iron grain size: such as the 430, 420, 410, etc;
Austenite size is non-magnetic or weak magnetic, martensite and ferrite are magnetic.
Most often used as decorative tube plate of stainless x60 line pipe steel plate is 304 austenite size of material, generally speaking is non-magnetic or weak magnetic, but caused by smelting chemical composition may also appear different magnetic fluctuations or processing status, but it cannot be considered a counterfeit or substandard, what reason is this?
Mentioned above austenite is non-magnetic or weak magnetic, martensite and ferrite is magnetic, due to improper smelting composition segregation or heat treatment, will cause the austenitic 304 stainless steel plate in a small amount of martensite and ferrite. In this way, 304 will be with a weak magnetic stainless steel plate.
In addition, 304 stainless steel plate after cold working, the organization structure will be to the martensitic transformation, the greater the degree of cold deformation, martensitic transformation, the magnetic steel. As a number of steel strip, the production of Φ 76 tube, no obvious magnetic induction, Φ 9.5 tube production. Because ling bending deformation is magnetically sensitive to some apparently, rectangular tube production due to the deformation is bigger than circular tube, especially the Angle, more intense magnetic more obvious deformation.
To eliminate the causes of 304 magnetic steel treated by high temperature solid solution stability returns austenitic organization, thus eliminating magnetism.
In particular, due to the above magnetic causes of 304 stainless steel plate, stainless steel plate with other material, such as 430, carbon steel magnetic is not entirely with 1 level, that is to say 304 magnetic always shows the weak magnetic steel.
This tells us, if the stainless steel plate with weak magnetic or completely without magnetic, should distinguish material for 304 or 316; If the magnetic with carbon steel, show strong magnetic, 304 for judging is not material.
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