Introduction to rolling surface processing of stainless steel tubes and the role of various elements in stainless steel

Introduction to rolling surface processing of stainless steel tubes
Stainless steel tube is an economic section of steel, is an important product in the steel industry, can be widely used in life decoration and industry, many people on the market for the production of staircase handrails, window guards, railings, furniture, etc., it is very widely used, a brief understanding of the rolling surface processing of stainless steel tube knowledge:
1, after hot rolling, annealing, pickling and descaling, the surface of the stainless steel plate after processing is a dull surface, a little rough;

2, better than the general surface finish, also a dull surface, after cold rolling, annealing, descaling, and finally lightly rolled with a rough surface roller;

3、This is the most commonly used in construction applications, except for the last light cold rolling with polishing rollers after annealing and descaling, other processes are the same as 2D, the surface is slightly luminous and can be polished;

4、Bright annealing:

    (1) This is a reflective surface, rolled by polishing rollers and final annealed in a controlled atmosphere; 

    (2) Bright annealed still maintains its reflective surface and does not produce oxide.
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Stainless steel as a more value-added special steel products, its application areas are becoming more and more widespread, both in the civil sector such as decoration, kitchenware, home appliances, etc.; or industrial areas such as petrochemical, mechanical equipment, etc. have been widely used, the current market outlook for high-quality stainless steel products is still promising. Below, let us understand the function of the main relevant elements required for the production of stainless steel.
1
Nickel: Nickel is the most important core element of stainless steel, which can improve the strength and toughness of steel, improve hardenability. When the content is high, it can significantly change the physical properties of some of the steel and alloy to improve the corrosion resistance of steel. 
2
Manganese: can improve the strength of steel, can weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, high alloy steel (high manganese steel) with high manganese content has good wear resistance and other physical properties.
3
Chromium: can improve the hardenability and wear resistance of steel, can improve the corrosion resistance and oxidation resistance of steel.
4
Vanadium: can refine the grain structure of steel, improve the strength, toughness and wear resistance of steel. When it is fused into the austenite at high temperatures, it increases the hardenability of the steel; conversely, when it is present in the carbide form, it reduces its hardenability.
5
Molybdenum: can significantly improve the hardenability and thermal strength of steel, prevent temper brittleness, improve the remanent magnetism and coercivity.
6
Titanium: can refine the grain organization of steel, thus improving the strength and toughness of steel. In stainless steel, titanium can eliminate or reduce the phenomenon of intergranular corrosion of steel. 
7
Copper: its prominent role is to improve the ordinary low-alloy steel atmospheric corrosion resistance, its use in conjunction with phosphorus more obvious.
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