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DS Type A American Standard ASTM A1008M cold-rolled coil cut-to-length processing


Summary description:




The thickness is 0.2-4mm, the width is 600-2000mm, and the length of the steel plate is 1200-6000mm.

Cold roll grade

Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06

Cold roll production process

Since there is no heating during the production process, there are no defects such as pits and scales that often occur in hot rolling, and the surface quality is good and the finish is high. Moreover, the dimensional accuracy of cold-rolled products is high, and the performance and structure of the products can meet some special requirements for use, such as electromagnetic properties and deep drawing properties. Performance: Low carbon steel grades are mainly used, which require good cold bending and welding performance, as well as certain stamping performance. The main producing areas are: Baosteel, Anshan Iron and Steel, Benxi Iron and Steel, Wuhan Iron and Steel, Handan Iron and Steel, Baotou Steel, Tangshan Iron and Steel, Lianshan Iron and Steel, Jinan Iron and Steel, etc.

Types of cold rolled cold rolled

(1) After annealing, it is processed into ordinary cold rolling;

(2) The galvanizing unit with pre-annealing treatment device processes galvanizing;

(3) Panels that basically do not require processing.

Cold coil use

Cold-rolled coils have good properties, that is, through cold rolling, cold-rolled strips and steel sheets with thinner thickness and higher precision can be obtained, with high flatness, high surface finish, clean and bright surface of cold-rolled sheets, and easy coating. Plating processing, many varieties, wide application, high stamping performance, no aging, low yield point, so cold-rolled sheet has a wide range of uses, mainly used in automobiles, printed iron drums, construction, building materials, bicycles and other industries , and is also the best material for the production of organic coated steel sheets.

Cold Roll Chemical Composition

Grade CMnPSAltaTibDC01, SPCC0.120.600.0450.0450.020DC02, SPCD0.100.450.0350.0350.020DC03, SPCE0.080.400.0300.0300.020DC04, SPCF0.0 60.350.0250.0250.015

Cold rolled coil

Coil is a kind of plate in steel. In fact, it is a long and narrow thin steel plate supplied in coils. The coil and flat plate are almost a cut and package. Chilled coil is obtained by hot-rolled coil after pickling and cold rolling. It can be said to be a kind of cold rolled coil. Cold-rolled coils (annealed state): hot-rolled coils obtained by pickling, cold rolling, bell annealing, tempering, and (finishing). There are three main differences between the two: 1. In appearance, the general chilled coil is a little black. 2. The surface quality, structure, and dimensional accuracy of cold-rolled sheets are better than chilled coiled sheets. 3. In terms of performance, because the chilled coil directly obtained by the hot-rolled coil through the cold rolling process undergoes work hardening during cold rolling, resulting in an increase in yield strength and residual internal stress, the external performance is relatively "hard". It is called chilled coil. Therefore, the yield strength: the chilled coil is larger than the cold-rolled coil (annealed state), which makes the cold-rolled coil (annealed state) more conducive to stamping. Generally, the default delivery state of cold-rolled coils is annealed.