Roll gap control method and device under light or heavy pressure

A technology of a pressing device and a control method, which is applied in the field of roll gap control under light or heavy pressing, can solve the problems of inability to achieve accurate roll gap calibration, uneven cast slabs, etc., and achieve high roll gap control accuracy and simple operation. , the effect of reducing the impact of equipment restrictions

Active Publication Date: 2021-08-24
CONTINUOUS CASTING TECH ENG OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the unevenness of the slab, accurate calibration of the roll gap cannot be achieved

Method used

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  • Roll gap control method and device under light or heavy pressure
  • Roll gap control method and device under light or heavy pressure
  • Roll gap control method and device under light or heavy pressure

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Embodiment Construction

[0070] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0071] Various embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.

[0072] figure 2 It is a flow chart of the roll gap control method under light reduction or heavy reduction of the present invention, such as figure 2 As shown, the roll gap control method under light reduction or heavy reduction includes:

[0073] Step S1, initialize the roll gap, install the pressing device according to the drawing (the factory installation drawing of the pressing device, for example, the factory...

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Abstract

The invention provides a method and device for controlling the roll gap under light reduction or heavy reduction, including: taking the roll gap value of the installed pressing device in the drawing as the initial roll gap value; Carry out calibration to obtain the corresponding relationship between the displacement sensor and the roll gap value; when the pressing is not implemented, the pressing roll works in the hot billet pressure mode, and obtain the rolling gap value of the pressing device in real time through the displacement sensor; set the relative pressure of each pressing roll Reduction amount; when the reduction is implemented, the reduction roller that performs the reduction works in the displacement control mode, and the average value of the roll gap value of the reduction device corresponding to the reduction roller when the reduction is not implemented for the set time As the reference roll gap value of the pressing device, the target roll gap value of the pressing device corresponding to the pressing roller is obtained according to the reference roll gap value and the relative reduction amount; The stroke implements the pressure nip control on the pressure rollers. The above method and device realize the dynamic measurement of the reference roll gap.

Description

technical field [0001] The invention relates to the field of continuous casting, and more specifically, to a method and device for controlling a roll gap under light reduction or heavy reduction. Background technique [0002] Central segregation and V-shaped segregation, that is, the uneven composition of the central area of ​​the slab, are the inevitable products of the solidification process of continuous casting, and are the main defects that cause internal quality problems in continuous casting of billets, and have a great impact on the quality of the slab. In the subsequent treatment process of bearing steel, high carbon hard wire, cord steel, gear steel, etc., due to the inhomogeneous segregation of the center, the network carbide, martensitic structure, banded structure, etc. lead to the core and matrix. Inconsistent performance, uneven hardness, brittle fracture after drawing, broken wire, unqualified flaw detection and other problems. Light reduction / heavy reductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/16B22D11/12
CPCB22D11/1206B22D11/16
Inventor 陈志凌
Owner CONTINUOUS CASTING TECH ENG OF CHINA
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