Production process of high-speed cold-rolled straight bar

Abstract

The present invention relates to a production process of high-speed cold-rolled straight bars, and relates to the technical field of cold-rolled steel bars, comprising: step S1, sending the descaled rolled piece into a cold rolling mill for cold rolling; step S2, putting the rolled piece According to the length and thickness, it is divided into three rolling areas; step S3, according to the temperature of each rolling area, the roll spacing of the cold rolling mill is controlled to carry out the first rolling; step S4, according to the rolling of the first rolling Thickness controls the roll spacing of the cold rolling mill to carry out the second rolling; after the first rolling of the rolled piece is completed, the second rolling is controlled according to the average thickness P of the rolled piece after the first rolling is completed. The distance between the rolls of the second rolling is compensated according to the temperature Ta of the rolled piece after the first rolling; step S5, after the second rolling is completed, the rolled piece is detected, and according to the detection result Judging whether the rolling meets the requirements. The invention effectively improves the rolling efficiency of cold rolling steel bars.

Description

technical field [0001] The invention relates to the technical field of steel bar cold rolling, in particular to a high-speed cold-rolled straight bar production process. Background technique [0002] Cold-rolled steel bars are obtained by cold-working hot-rolled steel bars, such as cold-drawing and drawing of steel bars at room temperature. The cold rolling mill is a new type of cold rolling processing equipment for steel bars. This machine can process hot-rolled wire rods and hot-rolled coils with a diameter of 6.5 mm to 12 mm into cold rolled coils with a diameter of 5 mm to 12 mm. Rolled ribbed steel bars, cold-rolled ribbed steel bars rolled by cold rolling mills are replacement products of cold-drawn low-carbon steel wires in prestressed concrete members, and can replace Class I steel bars in cast-in-place concrete structures , to save steel, it is a better kind of cold-worked steel of the same kind. [0003] In the prior art, when the steel bar is cold-rolled, only f...

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Problems solved by technology

[0004] Therefore, the present invention provides a high-speed cold-rolled straight bar production process to overcome the problem of low rolling efficiency in the prior art due to the inability to accurately adjust the rolling process according to the parameters of the rolled piece itself

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