Method for improving intermediate billet cooling water-penetrating efficiency of single stand rolling mill

Abstract

The invention discloses a method for improving intermediate billet cooling water-penetrating efficiency of a single stand rolling mill, and belongs to the field of single stand reversible-type mills.The method comprises the steps that during single-billet temperature controlled rolling, the temperature control time is 50-150 s, so that a rolling piece enters an intermediate billet water-penetrating device for two times; during double-billet rolling, the temperature control time is set within 180-200 s, and the speed of the rolling piece passing through the intermediate billet water-penetrating device is 0.5-2.0 m / s; when the double-billet temperature control time is 200-480 s, the speed of the rolling piece passing through the intermediate billet water-penetrating device is 0.5 m / s; and during three-billet rolling, the temperature control time is set within 400-610 s, the previous two blocks of three billets behind the rolling mill are subjected to temperature waiting, the intermediate billet water-penetrating device behind the rolling mill is subjected to reciprocating water penetrating for two times, and the third block of the three billets is subjected to reciprocating water penetrating for two times ahead the rolling mill. According to the method for improving intermediate billet cooling water-penetrating efficiency of single stand rolling mill, the water penetrating efficiency of the middle billet is improved, so that the purpose of minimizing the temperature control time of the second rolling stage is achieved, and the rolling mill machine-hour yield is improved accordingly.

Description

technical field [0001] The invention belongs to the field of metallurgical single-stand reversible rolling mills, and in particular relates to a method for improving the efficiency of cooling and water penetration of an intermediate billet of a single-stand rolling mill. Background technique [0002] When a single-stand rolling mill is rolling a temperature-controlled plate, since there is no long-term temperature-controlled area, in the actual rolling process, the machine-hour output can only be increased by increasing the billet grouping mode, but the pure rolling time of the rolled piece cannot be shortened, and because As the number of briquettes increases, the idle time of the rolling mill will increase dramatically, which seriously affects the rolling efficiency of the rolling mill. When using the intermediate billet for water penetration, due to the need to ensure the smooth progress of the production process, when the rolled piece passes through the intermediate bill...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above-mentioned technical problems, overcomes the shortcomings of the prior art, and proposes a method for improving the cooling and water penetration efficiency of the intermediate billet of a single-stand rolling mill, which mainly solves the problem that the water penetration utilization rate of the intermediate billet of the single-stand reversing rolling mill is not high, and the intermediate billet wears The problem that the water device has no obvious effect on shortening the temperature control time of the second stage of the rolling mill