301 stainless steel belt is the primary factor for use. Due to the relatively large hardness tolerance, the application field is very wide. 301 stainless steel belt corresponds to the new Chinese trademark: 12Cr17Ni7 and the old trademark 1Cr17Ni7.
Because the carbon content is better than 304, it has a good performance in terms of high hardness. The highest hardness can reach about H620 degrees, which is not reachable by ordinary materials. 301 hardness
The scale can be divided into HV200 degrees ~ HV620 degrees, and the hardness below 420 degrees can be shared with 304 materials! In terms of resistance, it is lower than 420HV, preferably 304 material, because
304 stainless steel belt has excellent low carbon, better than 301 material in terms of resistance!
Chemical composition: C: ≤0.15, Si: ≤1.0, Mn: ≤2.0, Cr: 16.0～18.0, Ni: 6.0-8.0, S: ≤0.03, P: ≤0.045
SUS301 (17Cr-7Ni) stainless steel can get high strength after cold working. 301 stainless steel strip is a kind of metastable austenitic stainless steel. Under the condition of full solution, it has
has a thorough austenite arrangement. Among the stainless steels, 301 is the steel that is most likely to be strengthened by cold deformation. The strength and hardness of the steel can be improved by cold deformation processing, and the requirements are retained.
plastic and resistance, coupled with this steel has excellent rust resistance under atmospheric conditions, but poor corrosion resistance in reducing media, poor corrosion resistance in chemical media such as acid, alkali and salt,
Therefore, it is not recommended for corrosive harsh environments. 301 is mainly used in cold working conditions to accept higher loads, but also hopes to reduce equipment weight and rust-free equipment parts.
is generally fine-rolled, with a thickness tolerance of 0.01mm-0.005mm. SUS301 stainless steel strip Because of its high hardness and good elasticity, spring springs are all used
301 stainless steel belt. Railway vehicles, belt conveyors, bolts and nuts, springs, etc. Clockwork shrapnel, high-precision steel belt application, etc.
Production issues and processing methods of stainless steel strip
Stainless steel strip is relatively simple to rust in water and air. The corrosion rate of zinc in the atmosphere is only 1/15 of the corrosion rate of steel in the atmosphere. Galvanized steel is used to maintain the steel plate with a dense galvanized layer. Protect from corrosion. Stainless steel belt refers to the conveyor belt made of carbon steel as the traction and carrying member of the belt conveyor. It can also be used to bundle goods. It is the need of various steel rolling enterprises to get used to the industrial production of various metal or mechanical products in different industrial sectors. And a narrow and long steel plate produced.
The width of stainless steel strip is within 1300mm, and the length is slightly different according to the size of each roll. Strip steel is generally supplied in coils, which has the advantages of high dimensional accuracy, good appearance quality, easy processing, and data saving. Steel strips are divided into ordinary strip steel and high-quality strip steel according to the raw materials used, and hot-rolled steel strip and cold-rolled steel strip are classified according to the processing method.
Stainless steel strip has a large output, a wide range of uses, and a wide variety of steel products. Divided into hot-rolled steel strip and cold-rolled steel strip according to the processing method; divided into thin steel strip (thickness less than 4mm) and thick steel strip (thickness greater than 4mm) according to thickness, and divided into wide steel strip according to width (width greater than 600mm) And narrow steel strips (width not greater than 600mm), narrow steel strips are divided into direct rolling narrow steel strips and slitting narrow steel strips from wide steel strips. According to their appearance, they are divided into original rolling appearance and plating (coating) appearance. Steel belts are divided into general and special (such as hulls, bridges, oil drums, welded pipes, packaging, self-generating vehicles, etc.) steel belts according to their uses.
stainless steel strip production matters
1. Before starting the machine, check whether the rotating parts of the equipment and the electrical parts are safe and reliable. If there is any abnormality, find the relevant personnel to repair it in time.
2. The data on the work site should be neatly stacked, and there should be no obstacles on the passage.
3. Operators must wear work clothes, tie the cuffs and corners tightly, wear work caps, gloves, and protective glasses.
4. When driving, it is forbidden to clean, refuel and repair the equipment, nor to clean the work site. Do not touch the steel belt and rotating parts with your hands when driving.
5. It is forbidden to put things or other objects on the equipment or maintenance cover while driving.
6. When using electric hoist hoisting, the safety operation rules of electric hoist should be followed, the wire rope should be checked whether it is in good condition and the hook should be hung up. When hoisting the steel belt, it is not allowed to slant or hang the steel belt in the air during the production process.
7. When the operation is over or the power is cut halfway, the power supply should be blocked immediately.
Stainless steel belt (strip) material
Stainless steel with trademark grouping. Stacked hardened stainless steel. It has a good forming function and excellent weldability, and can be used as an ultra-high strength material in the nuclear industry, aviation and aerospace industries. According to the composition, it can be divided into Cr series (SUS400), Cr-Ni series (SUS300), Cr-Mn-Ni (SUS200) and separate hardening series (SUS600).
200 series—chromium-nickel-manganese austenitic stainless steel
300 series—chromium-nickel austenitic stainless steel
301—Good ductility, used for molded products. It can also be quickly hardened by machining. Good weldability. Abrasion resistance and fatigue strength are better than 304 stainless steel.
302—The corrosion resistance is the same as that of 304, and the strength is better due to the relatively high carbon content.
303—After adding a small amount of sulfur and phosphorus, it is easier to cut than 304.
304—that is, 18/8 stainless steel. The GB trademark is 0Cr18Ni9.
309—Compared with 304, it has better temperature resistance.
316—After 304, the second most widely used steel grade, mainly used in food industry and surgical equipment, adding molybdenum element to obtain a special corrosion-resistant structure. Because it has better resistance to chloride corrosion than 304, it is also used as “ship steel”. SS316 is generally used in nuclear fuel recovery devices. 18/10 grade stainless steel generally also meets this application level.
321—Except for the addition of titanium, which reduces the risk of data weld corrosion, other functions are similar to 304.
400 series—ferritic and martensitic stainless steel
408—Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
409—the cheapest type (British and American), generally used as car exhaust pipe, is a ferritic stainless steel (chrome steel).
410—Martensite (high-strength chromium steel), good wear resistance, poor corrosion resistance.
416—Add sulfur and improve the processing function of data.
420—”tool grade” martensitic steel, similar to the earliest stainless steel such as Brinell high chromium steel. It is also used for surgical knives, which can be very bright.
430—Ferritic stainless steel, for decoration, such as car accessories. Excellent formability, but poor temperature resistance and corrosion resistance.
440—High-strength cutting tool steel with slightly higher carbon content. After proper heat treatment, higher yield strength can be obtained. The hardness can reach 58HRC, which is classified as the hardest stainless steel. The most common example is “razor blades.” There are three commonly used types: 440A, 440B, 440C, and 440F (easy processing type) for others.
500 series—heat-resistant chromium alloy steel.
600 series—Martensite accumulation hardening stainless steel.
630—The most commonly used type of stack hardening stainless steel, generally called 17-4; 17% Cr, 4%. Ni.