Hot-rolled pickled plate and production method thereof
A hot-rolled pickling and production method technology, applied in the field of steel rolling, can solve the problems that low-carbon steel is difficult to obtain quasi-acicular ferrite structure, etc., to eliminate scratches and roll marks defects, reduce work hardening, and improve surface quality effect
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[0037] Example 1
[0038] The main components of the hot-rolled pickled plate of this embodiment are shown in Table 1. The preparation method is as follows: heating the continuous casting billet of the composition to 1220°C, rough rolling it into a 35mm intermediate billet through the R1 and R2 stands, and The hot coil box is insulated before finishing rolling. The rough rolling reduction ratio is 85%, and the rough rolling exit temperature is 1050°C. Then, the intermediate billet is continuously rolled into 4mm strip steel through seven stands F1~F7. The final rolling temperature of the strip is 880°C. The strip is air-cooled at the exit of the finishing mill for 8 seconds, and then cooled in the latter part of the laminar cooling section. The coiling temperature is 668°C. The steel coil cooled to room temperature is uncoiled and straightened on a push-pull pickling production line, then pickled, rinsed and blow-dried, and trimmed and oiled to the final product. During the p...
Example Embodiment
[0039] Example 2
[0040] The main components of the hot-rolled pickled plate of this embodiment are shown in Table 1. The preparation method is: heating the continuous casting billet of the composition to 1180°C, rough rolling it into a 35mm intermediate billet through the two stands of R1 and R2, and The hot coil box is insulated before finishing rolling. The rough rolling reduction ratio is 85%, and the rough rolling exit temperature is 1000°C. Then the intermediate billet is continuously rolled into 3.6mm strip steel through the F1~F7 seven stands. The final rolling temperature of the strip is 870°C. The strip is air-cooled at the exit of the finishing mill for 6 seconds, and then cooled in the latter part of the laminar cooling section. The coiling temperature is 670℃. The steel coil cooled to room temperature is uncoiled and straightened on a push-pull pickling production line, then pickled, rinsed and blow-dried, and trimmed and oiled to the final product. During the p...
Example Embodiment
[0041] Example 3
[0042] The main components of the hot-rolled pickled plate of this embodiment are shown in Table 1. The preparation method is as follows: heating the continuous casting billet of the composition to 1200°C, rough rolling it into a 35mm intermediate billet through the R1 and R2 stands, and The hot coil box is insulated before finishing rolling. The rough rolling reduction ratio is 85%, and the rough rolling exit temperature is 1050°C. Then the intermediate billet is continuously rolled into a 3mm strip steel through the F1~F7 seven stands. The final rolling temperature of the strip is 870°C. The strip is air-cooled at the exit of the finishing mill for 6 seconds, and then cooled in the latter part of the laminar cooling section. The coiling temperature is 660°C. The steel coil cooled to room temperature is uncoiled and straightened on a push-pull pickling production line, then pickled, rinsed and blow-dried, and trimmed and oiled to the final product. During ...
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