Cold rolling mill

Hot-rolled steel coil is used as raw material, after removing the oxide skin, cold continuous rolling, the finished product is rolled hard coil, because of the cold hardening caused by continuous cold deformation, the strength and hardness of the rolled hard coil increase, and the toughness and plastic index decrease, so the stamping performance will deteriorate, and can only be used for simple deformation parts. By hot rolling through continuous cold deformation of cold rolling, the mechanical properties are relatively poor, the hardness is too high, must be annealed to restore its mechanical properties, no annealing called rolled hard roll.

The mills used for cold strip rolling are two high mills, four high mills and multiple high mills. The most widely used is the four-high mill. A multi-roll mill is used to roll thinner products. There are many kinds of multi-roll mills, such as six-roll mills, partial eight-roll mills, 12-roll mills, 20-roll mills, etc. (see rolling mills). With the improvement of the profile requirements, many techniques have been developed to improve the profile, such as roll bending technology, roll shifting technology and cross roll technology. Cold strip rolling mill can be divided into single reversible or irreversible type and multi-machine continuous type according to the rack arrangement. The former is suitable for multi-variety, small batch or large proportion of alloy steel products. It has low investment and fast factory construction, but low output and large metal consumption. Multi-stand continuous rolling is suitable for a single product variety or little change, it has the advantages of high production efficiency and large output, but the investment is large.

MET master a full set of mature cold rolling process technology, can independently design small and medium-sized cold rolling production line, ensure the long-term high performance of cold rolling machine, high precision operation, the minimum thickness of cold rolled strip steel can reach 0.05mm, cold rolled foil can reach 0.001mm, according to the characteristics of different products design scientific production process and equipment selection. To provide customers with the best quality products and services.

Hot-rolled steel coil is used as raw material, after removing the oxide skin, cold continuous rolling, the finished product is rolled hard coil, because of the cold hardening caused by continuous cold deformation, the strength and hardness of the rolled hard coil increase, and the toughness and plastic index decrease, so the stamping performance will deteriorate, and can only be used for simple deformation parts. By hot rolling through continuous cold deformation of cold rolling, the mechanical properties are relatively poor, the hardness is too high, must be annealed to restore its mechanical properties, no annealing called rolled hard roll.
The mills used for cold strip rolling are two high mills, four high mills and multiple high mills. The most widely used is the four-high mill. A multi-roll mill is used to roll thinner products. There are many kinds of multi-roll mills, such as six-roll mills, partial eight-roll mills, 12-roll mills, 20-roll mills, etc. (see rolling mills). With the improvement of the profile requirements, many techniques have been developed to improve the profile, such as roll bending technology, roll shifting technology and cross roll technology. Cold strip rolling mill can be divided into single reversible or irreversible type and multi-machine continuous type according to the rack arrangement. The former is suitable for multi-variety, small batch or large proportion of alloy steel products. It has low investment and fast factory construction, but low output and large metal consumption. Multi-stand continuous rolling is suitable for a single product variety or little change, it has the advantages of high production efficiency and large output, but the investment is large.
MET master a full set of mature cold rolling process technology, can independently design small and medium-sized cold rolling production line, ensure the long-term high performance of cold rolling machine, high precision operation, the minimum thickness of cold rolled strip steel can reach 0.05mm, cold rolled foil can reach 0.001mm, according to the characteristics of different products design scientific production process and equipment selection. To provide customers with the best quality products and services.