Hot Rolled Stainless Steel Coil Details

1. The toughness and surface flatness are poor, and the price is low;
2. The temperature of hot rolling is similar to that of forging;
3. The hot plate is hot-rolled and has oxide skin on the surface, and the thickness of the plate is different;
4. Due to its production process, it is more used in civilian applications, such as kitchen utensils, general household appliances, etc.;
5. The mechanical properties of hot-rolled steel sheets are far inferior to those of cold working and forging, but they have better toughness and ductility.

Standard Specification Of Hot Rolled Stainless Steel Coil

Production Process of Hot Rolled Stainless Steel Coil

1. Selection of slab and preparation before rolling
The slabs used in hot-rolled strip production are mainly continuous cast slabs, and only a few surviving blooming mill metallurgical plants use blooms.
2. Rough rolling
The function of the rough rolling unit is to dephosphor The temperature required for the finishing billet.
3. Finishing rolling
The strip billets rolled from the roughing mill are conveyed by the intermediate roller table or hot coil box over a hundred meters long to the finishing mill for rolling, and the finishing mill is arranged in a relatively simple manner. .
4. Cooling and coiling after rolling
(1) Cooling after rolling. The final rolling temperature of hot-rolled strip is generally 800-900 degrees Celsius, and the coiling temperature is generally 550-650 degrees Celsius. The strip must be cooled from the end of the finishing mill to the coiler in order to shorten this section of the production line. Commonly used strip cooling devices include laminar cooling, water curtain cooling, and high-pressure water spray cooling. The structure is simple, but the cooling is uneven and the water is easy to splash. The newly built plants have rarely been used.
(2) Coiling. The coiler is located at the end of the output roller table of the finishing mill. Its function is to roll the strip rolled by the finishing mill into a strip in a good coil shape, tightly and without friction. The number of coilers is generally 2-3 to meet the production requirements.
5. Finishing process
Hot-rolled strip coil finishing equipment mainly includes flattening, sub-coiling, transverse shearing and longitudinal shearing units, as well as heat treatment facilities such as normalization, annealing, and flap inspection devices.
Due to the increasing production of hot strip rolling mills and the increasing variety and specifications, the following requirements are placed on the coilers used: coiling tight and neat coils; increasing the bite and coiling speed; expanding the width and thickness range of the coiled strip ; Can coil high-strength alloy strip; can coil at lower temperature; can coil single-heavy steel coil.
The coiled steel coil is unloaded from the coiler by the unloading trolley and transported to the fixed bench, and the coil is transported to the steel coil transportation line by the coil transportation trolley, and finally transported by the steel coil transportation line to the steel coil warehouse or cold rolling. In the workshop, inspection, weighing, baling, and printing are carried out in the process.

Application of Hot Rolled Stainless Steel Coil

1. Structural steel, producing general structural steel and welded structural steel, mainly used in the production of steel structural parts, bridges, ships and vehicles.
2. Weathering steel, adding special elements (P, Cu, C, etc.), has good corrosion resistance and atmospheric corrosion resistance, used for containers and special vehicles
The production of vehicles is also used for building structures.
3. Steel for automobile structure, high-strength steel plate with good DRAWING performance and welding performance, used for automobile FRAME, WHEEL, etc.
Production.
4. Hot-rolled special steel, carbon steel, alloy steel, tool steel for general mechanical structures, and used for the production of various mechanical parts after heat treatment.
Produce.
5. The original cold-rolled sheet is used to produce various cold-rolled products, including CR, G lead, color-coated sheet, etc.
6. Steel plates for steel pipes have good processing performance and compressive strength, and are used for filling LPG, acetylene gas and various gases with an internal volume of less than 5001.
high-pressure gas pressure vessel.
7. The steel plate for high pressure vessels has good processing performance and compressive strength, and is used for the production of an internal volume of 500! The following are filled with LPG, acetylene gas and each
A high-pressure gas pressure vessel for a gas.
8. Stainless steel plate, stainless steel has good corrosion resistance, mainly used in food industry, surgical equipment, aerospace, petroleum, chemical industry, etc.
industry.