China direct sales cold rolled steel coil DC01-DC06 high strength steel rolls

Short Description:

Thickness of 0.1 to 8 mm

The width is 600-2 000mm

The length of steel plate is 1 200-6 000mm

Q195a-q235a, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06 DC01-DC06 CR220IF HC340LA 590DP 220P1 CR220BH CR42 DC01-DC06 SPCC-J1 SPCC-J2 SPCD SPCE TYH THD SPCC-SC TLA SPCC DC01


Product Detail

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description

Cold rolled coil refers to the steel strip which is rolled into a certain thickness directly by the roller at room temperature and rolled into the whole coil by the coiler. Compared with hot rolled coil, cold rolled coil surface bright, higher finish, but will produce more internal stress, after cold rolling often need annealing treatment.
Hot rolled steel coil is used as raw material, after acid pickling to remove the oxide scale, cold rolling, rolling into hard coil. The strength, hardness, toughness and plasticity index of rolled hard rolls are improved by cold work hardening caused by continuous cold deformation. , so the stamping performance will be poor, can only be used for simple deformation of parts. Hard rolled coils can be used as raw materials in hot-dip galvanizing plants because hot-dip galvanizing lines are equipped with deignition wires. The weight of rolled hard rolls is generally 20-40 tons. Hot rolled pickling rolls are continuously rolled at room temperature. The inner diameter is 610mm.

cold-roll (6)

Product features

cold-roll (7)

Due to no annealing treatment, high hardness (HRB > 90), poor machinability, can only be carried out below 90 degrees of simple directional bending (perpendicular to the coiling direction).
To put it simply, cold rolling is processed and rolled on the basis of hot rolled coil. Generally speaking, it is a hot rolling - pickling - cold rolling process.
Cold rolled sheet is processed from hot rolled sheet at room temperature. Although the temperature of the steel plate will rise during processing, it is still called cold rolling. Due to continuous cold deformation of hot rolling, mechanical properties are poor and hardness is too high. It must be annealed to restore its mechanical properties, and those without annealed are called hard rolled coils. Hard rolled coils are generally used to make products that do not need to be bent or stretched. Coils with thickness less than 1.0 are rolled on both sides or four sides, with good luck.

Application

Cold rolled strip is widely used in automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, canned food, etc. Cold rolled plate is the abbreviation of common carbon structural steel cold rolled plate, also known as cold rolled plate, commonly known as cold rolled plate, sometimes mistakenly written as cold rolled plate. The cold plate is a hot rolled strip of common carbon structural steel, which is further cold rolled into steel plates with thickness less than 4mm. Due to normal temperature rolling, no oxide scale, so the surface quality of cold plate is good, high dimensional accuracy, coupled with annealing treatment, its mechanical properties and process performance is better than hot rolled steel plate, in many fields, especially in the field of household appliances manufacturing, has gradually replaced hot rolled steel plate

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