Steel strip for LED bracket and manufacturing method thereof
A technology for an LED bracket and a manufacturing method, which is applied in the field of steel strips for LED brackets and their manufacturing, can solve the problems of poor thickness accuracy, inability to meet the quality requirements for producing LED brackets, and insufficient hardness of ordinary cold-rolled steel strips.
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Embodiment 1
[0047] (1) Hot rolling:
[0048] The composition of hot-rolled raw materials is shown in the table below:
[0049] serial number
C
Si
mn
P
S
Al
1
0.06
0.015
0.28
0.012
0.011
0.02
2
0.05
0.012
0.25
0.015
0.01
0.021
3
0.03
0.01
0.2
0.012
0.009
0.029
[0050] The balance is Fe and trace unavoidable impurities;
[0051] The finishing temperature of hot rolling is 870±20℃, and the coiling temperature of finishing rolling is 580±20℃;
[0052] (2) pickling
[0053] Hot-rolled steel coils are pickled by a push-pull shallow-trough turbulent-flow pickling unit, using hydrochloric acid pickling, the concentration is controlled between 7% and 17% (w / w), and the surface oxide scale is removed.
[0054] (3) cold rolling
[0055] After pickling, the steel coil is rolled by a double-stand reversible rolling mill, and the roughness of the rolling mill roll is...
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