Use of Hot Rolled Steel Sheet

Hot Rolled Steel Sheet uses continuous casting slabs or preliminary rolled slabs as raw materials, and is heated by a walking-type heating furnace. After descaling with high-pressure water, it enters the roughing mill. The rough rolling material passes through the head, tail, and then enters the finishing mill. Controlled rolling, after the final rolling, it will be coiled by laminar cooling (computer controlled cooling rate) and coiler to become a straight hair coil. Straight hair curls tend to have tongue and fish-tail shapes, with poor thickness and width accuracy. Waves, folds, and towers are often present at the edges. Its coil weight is heavy and the inner diameter of the steel coil is 760mm. Straighten the coils after cutting, trimming, trimming, and multiple straightening, leveling and other finishing lines, and then cut or rewind the coils to become: hot-rolled steel sheet, flat hot-rolled steel coil, longitudinal cut tape and other products. If the hot-rolled finishing coil is pickled to remove scale and oil, it will become a hot-rolled pickled coil. This product has the tendency to partially replace cold-rolled sheet, and the price is moderate, and it is loved by customers.

Hot Rolled Steel Sheet

The following Galvanized Steel Sheet Manufacturer will give you a detailed introduction to the use of hot rolled steel sheet.

1.Structural steel

It is mainly used for the production of steel structural parts, bridges, ships and vehicles.

2. Weather-resistant steel

Adding special elements (P, Cu, C, etc.), has good corrosion resistance and atmospheric corrosion resistance, used in the production of containers, special vehicles, and also used in building structures.

3.Steel for automobile structure

High-strength steel plate with good stamping and welding properties, used in automobile FRAME, WHEEL and other production.

4.Hot-rolled special steel

Carbon steel, alloy steel, and tool steel for general mechanical structures are used in the production of various mechanical parts after heat treatment engineering.

5.Cold-rolled original plate

Used to produce various cold-rolled products, including CR, GI, color coated plates, etc.

6. Steel plate for steel pipe

It has good processing performance and compressive strength, and is used to produce high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of 500L or less.

7, steel plate for high pressure vessels

It has good processing performance and compressive strength, and is used to produce high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of 500L or less.

8.Stainless steel plate

Stainless steel has good corrosion resistance and is mainly used in the food industry, surgical equipment, aerospace, petroleum, chemical and other industries.

The difference between hot rolled steel and cold rolled steel:

1. Cold rolled plate has high hardness and relatively difficult processing, but it is not easy to deform and has high strength. The strength of hot-rolled sheet is relatively low, the surface quality is poor (with oxidation \ low finish), but the plasticity is good, generally medium and thick plates, cold rolled sheet: high strength, high hardness, high surface finish, generally thin sheet, can be used as punch with board.

2. The mechanical properties of hot-rolled steel plates are far inferior to those of cold working and second to forging, but they have better toughness and ductility. Cold Rolled Steel Sheet has a certain degree of work hardening and low toughness, but can achieve a good yield strength ratio. It is used for cold bending spring leaflets and other parts. At the same time, the yield point is closer to the tensile strength, so it is dangerous during use. Unforeseen, accidents are likely to occur when the load exceeds the allowable load.

The above is the use of hot rolled steel sheet.