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Method for grinding hearth roll of continuous annealing unit on line

A technology of continuous annealing unit and hearth roller, applied in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of low nodulation elimination efficiency, complex operation, and many control parameters, so as to improve system functions and increase production efficiency , the effect of saving energy

Inactive Publication Date: 2012-07-11
美钢联工程技术股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

This method needs to control multiple variables, many control parameters, and complex operation, so the efficiency of eliminating nodules is low

Method used

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  • Method for grinding hearth roll of continuous annealing unit on line
  • Method for grinding hearth roll of continuous annealing unit on line
  • Method for grinding hearth roll of continuous annealing unit on line

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Embodiment Construction

[0025] The following description is merely exemplary in nature and not intended to limit the disclosure, application or uses.

[0026] Through the joint programming of PLC and transmission, the transmission speed of hearth roller can be adjusted online. According to the method for grinding hearth rollers on-line in the present invention, an interface for modifying the parameters of the hearth roller transmission device on-line needs to be added to the existing man-machine interface. The interface includes at least two modifiable hearth roll drive parameters, hearth roll diameter and surface line speed range. In this interface, the operator can modify the diameter parameters of the hearth roll or the range of the surface linear speed according to the nodulation of the hearth roll. After the operator finishes modifying the parameters of the hearth roller transmission device, the PLC processor calculates and processes the input according to the man-machine interface screen, and ...

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Abstract

The invention provides a method for grinding a hearth roll of a continuous annealing unit on line, which aims to solve the problem of extremely easy nodulation of the hearth roll of a silicon steel annealing unit. With the adoption of the method, production and operation personnel can directly operate through the existing man-machine interface under the situations that the furnace temperature is not required to be reduced, and any mechanical equipment is not required to be increased, and the hearth roll can be ground on line at any time according to site demands. The method has the beneficial effects that the efficiency is high, the operation is convenient and quick, the quality of the lower surface of finished strip steel is ensured, energy sources are effectively saved, and the production efficiency and the yield of product are improved.

Description

technical field [0001] The invention relates to the control of hearth rolls of an annealing furnace, in particular to a method for online grinding of hearth rolls of a continuous annealing unit. Background technique [0002] After the silicon steel continuous heat treatment unit has been in operation for a period of time, the fine dust adhered to the surface of the strip accumulates in the pores of the carbon sleeve, and it is easy to form "nodules" on the hearth roll at high temperature. The direct harm of nodulation is to cause defects such as bright marks, scratches, and chrome damage on the strip, which will affect the surface quality of the strip, and then affect the yield. [0003] figure 1 It is a common method for eliminating hearth roll nodules adopted by the prior art, which is usually an off-line operation method. Such as figure 1 As shown, this traditional offline method includes the following steps: [0004] (1 In step 100, after finding nodules on the heart...

Claims

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Application Information

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IPC IPC(8): C21D9/56C21D1/26C21D11/00
Inventor 张本艳胡志强孟庆贤郭琪罗晓时宁连峰肖伟高继柱高国飞周振华王丹妮
Owner 美钢联工程技术股份有限公司
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