Different Usage of Types of Hot Rolled Steel Products
1.Steel for structure
It is mainly used in the production of steel structural parts, bridges, ships and vehicles.
With adding special elements (P, Cu, C, etc.), weathering steel has good corrosion resistance and atmospheric corrosion resistance, and is used for the production of containers and special vehicles, and also for building structures.
3.Steel for automobile structure
It has high strength steel plate with good stamping performance and welding performance, used for the production of frame, wheel, etc.
4.Hot rolled special steel
General mechanical structure uses carbon steel, alloy steel, tool steel, after heat treatment engineering for the production of various mechanical parts.
5.Cold rolled raw plate
It is used in the production of various cold rolled products, including CR, GI, color coated plates, etc.
6.Steel plate for steel pipe
With good processing performance and pressure strength, it is used for the production of high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an inner volume of 500L or less.
7.Steel plate for high-pressure vessels
With good processing performance and pressure strength, it is used for the production of 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, mainly used in the food industry, surgical equipment, aerospace, petroleum, chemical and other industries.
Welding Notice of Hot Rolled Carbon Steel Flat Product
1.Due to the good welding performance of hot rolled carbon steel flat product, in the condition of not thick plate, and the welding requirements are not too high, the choice of AC spot welder can achieve the welding requirements.
2.If the cost of equipment allows, try to use medium frequency inverter spot welder to spot weld mil steel plate. The welding effect is better, and the fusion nucleus and welded joints will be more perfect.
3.There are cold-rolled steel plates and hot-rolled steel plates. Cold-rolled steel plates do not need special cleaning before welding, while hot-rolled steel plates must be cleared of oxidation, rust, oil and other impurities on the surface.
4.If the capacity of the spot welder used allows, it is suggested that hard specification welding to reduce the effect of heat diffusion on the product, and also to reduce product distortion.
Hot Rolled Carbon Steel Overview
Hot rolled carbon steel plates are widely used in many specialized mechanical equipment and large structural components in the manufacturing industry, for example, in the engineering, energy and mining machinery industries, where many products use steel plateswith thicknesses of 6-20mm. Some of these hot rolled carbon steel plates are flat sheets without hollow cores, while most are 30% porosity plates. Their specifications and sizes vary depending on the product and application. These carbon steel plates are cut by plasma or oxygen, which will leave different degrees of flying edges, slag and burrs on the cut surface. These must be removed, otherwise the aesthetics and usability of the finished product will be affected.
Hot Rolled Steel Products VS Cold Rolled Steel Products
·Cold rolled steel products are hard, relatively difficult to process, but not easy to deformation, higher strength.
·Hot rolled steel products strength is relatively low, and the surface quality is poor (oxidation/low finish), but it has good plasticity, generally for the thick plate. Cold rolled steel products have high strength, high hardness, high surface finish, generally for the thin plate, which can be used as a stamping plate.
·The mechanical properties of hot rolled steel products are far from cold rolled steel product, but hot rolled steel products have good toughness and ductility.
·Cold rolled steel products due to a certain degree of hardening, low toughness, but can achieve a better yield to strength ratio, used to cold bending spring and other parts, while the yield point is closer to the tensile strength, so the use of the process of danger is not foreseeable, in the load exceeds the allowable load is prone to accidents.