Stainless Steel Coil
Product Introduction of Stainless Steel Coil
Stainless steel sheet is alloy steel with a smooth surface, high weldability, corrosion resistance, polishability, heat resistance, corrosion resistance, and so on. Widely used in all walks of life, it is an important material for modern industry. Stainless Steel Sheet is divided into austenitic Stainless Steel Sheet, ferritic stainless steel, martensitic stainless steel, duplex stainless steel according to the tissue state.
Shand Baowu Steel Group. Offer Stainless Steel Plate In Various Thicknesses, Standard Cut Lengths. Provide Custom.
Best Selling 430 Stainless Steel Coil 316l Cold Shandong Baowu Steel Group. Offer Stainless Steel Coil In Various Thicknesses, Standard Cut Lengths. Provide Custom.We will provide
High Quality Factory Direct 201 316 304 Stainless Stainless steel does not stain, corrode, or rust as easily as regular carbon steel and provides high strength
China Professional Factory Supply 10mm Aisi 304 stainless steel coil Stainless steel plate surface is bright and clean, with high plasticity, toughness and mechanical strength, acid,
Stainless Steel Strip Code：STAINLESS STEEL STRIPSeries：stainless steelSpec：Stainless SteelMaterial：201, 202, 301, 302, 303, 304, 304L, 304H, 310S, 316, 316L, 317L, 321,310S 309S, 410, 410S,420, 430, 431, 440A,904L
Stainless Steel Coil Cold Rolled Steel Plate is a flat sheet of steel that is poured with molten steel and pressed after cooling. Cold Rolled Steel
|Product Name||Stainless Steel Coil|
|Width:||1220mm 1500mm 1000mm or as customer’s requirements|
|Thickness:||0.1-3mm, or as customer’s requirements|
|Surface:||2B, NO.1, NO.2D, NO.3, NO.4, HL, BA, BK OR CUSTOMIZED|
|Material:||301, 304, 304j1, 304l, 321, 309s, etc|
|Spangle:||Regular spangle, minimal spangle, zero spangle, big spangle|
|Coil Weight:||3-5 Tons or as customer requirements|
|Packing:||Industry-standard packaging or according to client’s requirement|
|Payment||TT, Irrevocable LC at sight, Western union, Ali trade assurance|
|Delivery time:||Up to order quantity, contact us to know|
Product display Of Stainless Steel Coil
Application Of Stainless Steel Coil
The stainless steel coil is widely used in chemical, food, pharmaceutical, paper, petroleum, atomic energy, and other industries, as well as various parts of construction, kitchenware, tableware, vehicles, and household appliances.
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Packaging and Shipping of Stainless Steel Coil
The corrosion resistance of stainless steel coils decreases as the carbon content increases. Therefore, the carbon content of most stainless steels is low, up to 1.2%, and some steels have a low ωC (carbon content) of even less than 0.03% (such as 00Cr12). The main alloying element in stainless steel coil is Cr (chromium). Only when the Cr content reaches a certain value, the steel has corrosion resistance. Therefore, the goods Cr (chromium) content of at least 10.5%. Stainless steel coil also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements.
Most of the requirements for use are to maintain the original appearance of the building for a long time. In determining which type of goods to choose, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere and the cleaning system to be used. However, other applications are increasingly seeking structural integrity or impermeability. Examples include roofs and sidewalls of industrial buildings. In these applications, construction cost to the owner may be more important than aesthetics, and the surface may not be very clean. The use of 304 stainless steel coils in dry interior environments is quite effective.
Weldability. Different product uses have different requirements for weldability. A class of tableware generally does not require weldability, even including some cookware companies. However, most products require raw materials with good weldability, such as second-class tableware, insulation cups, steel pipes, water heaters, water dispensers, etc.
Corrosion resistance. Most stainless steel coil products require good corrosion resistance, such as Class I or Class II tableware, kitchen utensils, water heaters, water dispensers, etc.
Polishing performance. In today’s society, stainless steel coil products in the production process are generally polished, only a few products such as water heaters, drinking fountains, etc. do not need to be polished. Therefore, this requires raw materials with good polishing performance.
1. The need for pre-treatment
Pretreatment is an important treatment step before the surface of stainless steel coil parts enter surface treatment (including pickling, chemical polishing and electrochemical polishing, electroplating, passivation, black coating, coloring, chemical treatment, etc.). During the forming process of goods parts, the surface may adhere to oil stains, burrs, rough surfaces and oxides. Therefore, before surface treatment, oil stains, burrs, uneven surfaces and oxides must be removed in order to obtain subsequent satisfactory results through processing.
2. Treatment of removed dirt
Stainless steel coil surface pretreatment in the need to remove the dirt can be divided into two categories: organic and inorganic substances.
(1) organic dirt. Including mineral oil (such as diesel, oil, paraffin, gypsum, etc.) and animal oil, vegetable oil (such as soybean oil, camellia oil, rapeseed oil, lard, butter, etc.). These oils are mainly from the stainless steel coil zero cattle processing process used in the lubricant. , cutting oil, quenching oil, polishing paste and polishing paste, and fingerprints.
(2) Inorganic dirt. Including dirt, dust particles, oxides and other contaminants generated during the heat treatment process.
3. Pretreatment steps for stainless steel coil parts
(1) The surface is mechanically leveled. Eliminate the roughness of the stainless steel coil surface, through mechanical polishing and grinding to achieve a surface finish.
(2) Degreasing. Remove the surface oil and dirt.
(3) Acid washing. Remove the oxides on the surface.
(4) Weak corrosion. Activates the surface to be treated, removes the surface passivation film, and exposes the metal crystal structure.
Stainless steel is a high-alloy steel, with a large resistance to rolling deformation. In order to carry out high-efficiency and high-precision rolling, rigid rolling mills should be used, generally multi-roller cold rolling mill.
Special welding process is also a feature of cold-rolled stainless steel coil production.
In the production process of cold rolled stainless steel coil, the raw material (hot rolled coil) should be annealed, intermediate annealing should be carried out in the cold rolling process, and the final product should be annealed, so annealing is an important part of the production.
Cold-rolled stainless steel is a high-grade steel products, there are strict requirements for surface quality. Not only are metallurgical defects caused by the previous process not allowed, but also obvious defects caused by the cold rolling process.