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A device for suppressing the oxidation rate of rolls and its application method

A technology of oxidation rate and roll, applied in the rolling mill control device, keeping the rolling equipment in an effective state, metal rolling and other directions, can solve the problems of the interference effect of the rolling oil, reduce the scale of the roll system, improve the uniform density, The effect of too fast a cost-effective production rate

Active Publication Date: 2018-06-01
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] (3) Strip cooling, in addition to the cooling of the roll surface, the reduction of the surface temperature of the strip is also very important. In the case of ensuring that the internal temperature of the strip does not drop, there is currently an anti-stripping water device to reduce the temperature of the strip. Steel surface temperature, its disadvantage is that it has a certain interference effect on rolling oil

Method used

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  • A device for suppressing the oxidation rate of rolls and its application method
  • A device for suppressing the oxidation rate of rolls and its application method
  • A device for suppressing the oxidation rate of rolls and its application method

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Embodiment Construction

[0047] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings of the embodiments.

[0048] The present invention mainly relates to the protection technology of inert gas and the basic automation level control L1 in the above-mentioned computer-controlled strip rolling process (mainly completing the sequence control, position control, speed control, etc. of the equipment, receiving and executing from the process control level The setting value of L2) and the automatic control technology associated with the process control level L2 (mainly performing the rolling schedule formulation and optimization function based on the mathematical model, and sending the set calculation value to L1).

[0049] First of all, based on the different materials of the strip steel grades to be rolled and the characteristics of different oxidation rates on the surface of the rolls, different opening modes are selected...

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Abstract

The invention relates to a device for suppressing the oxidation rate of a roll and a method for using the device, which relates to the field of roll oxidation protection and solves the problem of slowing down the oxidation rate of the roll surface. The device is used in the strip rolling process, and the strip rolling process adopts four Computer control L4~L1, this device is composed of a pair of gas nozzles, which are respectively installed under the water cutting boards on both sides of the roll outlet working side and the transmission side of the stand before finishing rolling, and the nozzle of each gas nozzle is facing the water cutting board At the contact point with the roll, each gas nozzle is connected to the nitrogen generator through stainless steel pipes; the opening and closing of a pair of gas nozzles is controlled by the command issued by L2. According to the adjustment of the roll diameter and the roll gap, the gas nozzle can be followed by the gas nozzle to realize the gas protection after the roll leaves the roll gap, reduce the probability of the roll surface being in contact with air in the high temperature stage, and ensure that the oxidation rate of the roll surface is suppressed and controlled. It lays the foundation for the formation of a uniform and dense oxide film on the surface of the roll.

Description

technical field [0001] The invention relates to the field of roll oxidation protection, in particular to a device for suppressing the oxidation rate of rolls during rolling and a method for using the same. Background technique [0002] The improvement of strip surface quality is one of the important signs of product quality. With the development of science and technology, the demand for strip steel is developing in the direction of high strength, thinning and green, which puts forward more stringent requirements for the control of the surface quality of strip steel. The roll is the basic deformation tool in the hot rolling production process. It is closely related to the surface quality and shape of the strip, and determines the operating efficiency of the production line to a large extent. Therefore, the strict requirements on the surface quality of the strip must be Involves improving the surface quality of rolls. [0003] At present, there are relatively mature technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B9/00B21B28/04B21B37/00
Inventor 王金涛汪长安
Owner BAOSHAN IRON & STEEL CO LTD
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