GNEE Steel automotive steel sheet
The production process of cold-rolled automotive sheets is complex and difficult, and the production and quality conditions between each process restrict each other. In recent years, advanced cold-rolled automobile sheet manufacturers at home and abroad have gradually established, developed and improved the principle of consistent production, and unified the various processes involved in smelting, continuous casting, hot rolling, cold rolling, annealing and coating. Production planning and quality management provide advanced process technology and management support for the production of high-quality cold-rolled automotive sheets.
| Usually available specification range | |||||
| Variety | thickness | width | length(or coil inner diameter) | ||
| steel plate | trimming | 0.30~3.5 | 900~1830 | 1000~6000 | |
| No trimming | 900~1850 | ||||
| steel belt | trimming | 0.30~3.5 | 900~1830 | 610(the inside diameter of) | |
| No trimming | 900~1850 | ||||
| Slitting steel strip | 0.30~3.5 | 120~<900 | |||
| Technical Standards for cold rolled steel coil | |||
| grade | Comparable to foreign standards | illustrate | |
| Standard | Grade | ||
| general use | DIN1623JISG3141 | St12 SPCC | For general forming processing such as refrigerators and other home appliance shells, oil barrels, and steel furniture. |
| stamping grade | DIN1623JISG3141 | St13 SPCD | Steel for stamping and forming processes such as automobiles, home appliances, and construction. |
| Deep drawing | DIN1623JISG3141 | St13 SPCE | Automobile headlights, fuel tanks, car doors, windows and other steels for deep drawing and forming. |
| Steel for extra deep drawing | Car headlights, complex underbody panels, oil pans. | ||
| hard steel | JISG3141 | 1/4 hard1/8hard | Steel for bicycle rims and steel for stationery. |
| structural steel | DIN1623 | St37-2G St44-3G St52-3G | Buildings, car bodies, brackets. |
| Atmospheric resistant steel | Automobile, train car outer panels, container panels, doors and windows, cold-formed steel and other components. | ||
| steel for car wheels | Steel for automotive wheel rims. | ||
Cold rolled steel automotive
Advantages of cold rolled automotive sheets
1) Excellent formability, namely: high plastic strain ratio r value, high uniform elongation δu, high total elongation δt, low yield strength σs, low aging index AI and low yield elongation , used for stamping complex automobile panels.
2) Excellent dent resistance and sufficient structural rigidity to avoid dents during manufacturing and use, especially in sudden collision accidents, to maximize energy absorption and protect the safety of the occupants.
3) Good welding performance to ensure effective connection of parts and no major changes in the strength and performance of the solder joints and areas surrounding the solder joints.
4) Excellent surface morphology and smoothness, good spraying performance and adhesion to paint coating, in order to achieve a beautiful surface.
5) High corrosion resistance.
6) Good plate shape and surface flatness, strict dimensional accuracy and performance uniformity.
7) Good sound absorption and vibration damping properties, used in some parts to reduce the thunder effect of the car while driving.
Due to these special quality requirements of cold-rolled automobile sheets, the production process is complex and difficult. Therefore, the manufacturers of automobile sheets have adopted the principle of consistent production in actual production, that is, smelting, continuous casting, hot rolling, cold rolling, and annealing. and coating and plating and other processes involved in unified production planning and management.
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Our company has comprehensive steel plate cutting equipment and skilled technical operators, making customers more confident and worry free. Various steel plates can be laser cut, plasma cut, flame cut, CNC cut, and can be cut into products according to any customer's needs.
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