Hot rolled steel leh cold rolled steel inkar danglamna .
Rolling process chu a danglam a, mahse composition chu a inang thei. steel number inang, hot rolling chu a tlangpuiin a nem zawk. High precision sheet chu a tlangpuiin cold rolling. atanga siam a ni a, automobile industry leh in chhunga hmanrua te chuan cold-rolled steel tam tak an hmang.
Cold rolled steel hi a tlangpuiin grade pangngaiah then a ni (C .<0.12%), low carbon grade (C<0.10%) and ultra-low carbon grade (C<0.08%), and the lower the carbon content, the better the cold plasticity, which is widely used in the electronic industry. The thickness of the sheet is generally less than 3mm, and it is difficult for the cold-rolled steel to be cold processed if it is thicker. Due to the different production and processing technology, hot rolled steel sheet has good cold plasticity, good stamping formability and small friction damage to the mold. Therefore, in industrial applications, hot rolled steel plate can be generally thicker than cold rolled steel plate
A tlangpuiin, cold-rolled steel ang chi galvanized leh colored steel sheet te chu annealed a ngai a, chuvangin plasticity leh elongation pawh a tha zawk a, hei hi automobile, home appliances, hardware leh industry dang ah te hman a ni nasa hle., hot rolled sheet surface finish chuan requirements a tlin thei lo va, chuvangin hot rolled steel strip chu cold rolled{{2} what’s a tlangpuiin, hot rolled strip is is a tlangpuiin a awm a ngai a ni. leh cold rolled steel strip chu 0.1mm a thleng thei bawk. Professional lamah chuan hot rolling chu crystallization temperature point chungah a rolling a, cold rolling chu crystallization temperature point hnuaiah a rolling bawk.
CBIES hian 1999 atan steel tube an siam chhuak ber a ni.Side door impact beam, . Cross car beam a ni., seat frame, shock absorber, exhaust system, .Trunk hinge tube a ni a.etc{. tih a ni.
