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Method for online automatic maintaining of hot-rolled laminar cooling manifolds

A laminar cooling and cooling header technology, applied in workpiece cooling devices, metal rolling, metal rolling, etc., can solve the problems of quality impact, short life, and high failure rate of laminar cooling headers, and reduce the failure rate. , the effect of ensuring sensitivity

Inactive Publication Date: 2017-01-11
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature baking and water vapor erosion for a long time, the laminar flow cooling header has a high failure rate and short life, which has a certain impact on the quality of the product and indirectly increases the production cost.

Method used

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  • Method for online automatic maintaining of hot-rolled laminar cooling manifolds
  • Method for online automatic maintaining of hot-rolled laminar cooling manifolds
  • Method for online automatic maintaining of hot-rolled laminar cooling manifolds

Examples

Experimental program
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Embodiment Construction

[0026] image 3 It is the specific implementation method of online automatic maintenance of hot-rolled laminar flow cooling headers. First, make preparations and fully understand the current equipment composition, automatic control system and process of laminar cooling header water spraying, and expand ideas for the development of maintenance functions. , master the key points of control; on the premise of ensuring that the laminar flow cooling header can meet the process control requirements during steel rolling, add the maintenance function of the laminar flow cooling header to ensure the stable operation of all equipment in the laminar flow area.

[0027] Step 1. Determine whether the power supply of the solenoid valve controlling the water spray of the laminar flow cooling header is normal, and whether the cantilever of each group of laminar flow cooling header is in the lower position. When the power supply of the solenoid valve is normal and the cantilever is in the lower...

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Abstract

The invention discloses a method for online automatic maintaining of hot-rolled laminar cooling manifolds and belongs to the technical field of automatic control. The laminar cooling manifolds are maintained by utilizing the steel rolling interval time, and therefore the service life of the laminar cooling manifolds is prolonged. Firstly, the running conditions of a laminar manifold control valve are judged; then the load carrying conditions of a finishing mill and laminar roller beds are taken into consideration, the speed of the laminar roller bed cannot be zero, in addition, according to the method, running needs to be conducted in an automatic mode, and a rolling mill secondary CTC model does not have starting and stopping orders on the laminar manifolds; and finally, and an operator controls whether the function is started or not and controls the maintaining time. The method has the beneficial effects that surface cooling of the laminar roller beds can be more uniform, and meanwhile the damage rate of the electromagnetic valve can be reduced; and especially, the service life of the laminar headers can be prolonged, and the equipment maintaining cost is saved.

Description

technical field [0001] The invention belongs to the technical field of automatic control and provides an online automatic maintenance method for a hot-rolled laminar flow cooling header. This method comprehensively considers the production characteristics of the hot rolling line and the operation of the laminar cooling header, and cleverly uses the logic signal of the automatic control system to realize the function of prolonging the life of the laminar cooling header. Background technique [0002] The hot-rolled laminar cooling function is mainly to quickly cool down the high-temperature strip steel after finishing rolling by spraying water from a large number of laminar cooling headers to meet the technological requirements of the product. These laminar flow cooling headers are divided into upper water spray header and lower water spray header. The upper and lower water spray headers are controlled in groups. Different steel grades have different temperature requirements. ...

Claims

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Application Information

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IPC IPC(8): B21B45/02
CPCB21B45/0218B21B2201/06
Inventor 张文宝刘得鹏韦节辉刘顺东
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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