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Control method and device for preventing bearing set burning loss of supporting roller of finish mill

A control method and technology of bearing packs, applied in rolling force/roll gap control, safety equipment of rolls, metal rolling, etc., can solve the problems of easy burning of bearing packs of backing rolls of finishing mills, and achieve rapid build-up of oil film thickness , The effect of improving productivity and preventing indentation defects

Active Publication Date: 2019-05-31
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problem in the prior art that the back-up roll bearing packs of the finishing mill are easy to burn out by providing a control method and device for preventing the back-up roll bearing packs of the finishing mill from burning out

Method used

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  • Control method and device for preventing bearing set burning loss of supporting roller of finish mill
  • Control method and device for preventing bearing set burning loss of supporting roller of finish mill
  • Control method and device for preventing bearing set burning loss of supporting roller of finish mill

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Effect test

Embodiment 1

[0037] see figure 1 , an embodiment of the present invention provides a control method for preventing back-up roll bearing package burnout in a finishing mill, including:

[0038] Step S10, optimizing the calibration process of the rolling mill, canceling the static pressing of the rolling mill, and adopting the dynamic pressing method of turning the car first and then pressing down.

[0039] Wherein, in step S10, adopting the dynamic pressing method of turning first and then pressing includes: performing dynamic rotation and pressing of the rolls when turning at a linear speed of 2 m / s.

[0040] Usually, the calibration of the finishing mill usually carries out two static pressings, and the static pressing is performed when the oil film thickness of the back-up roll bearing package has not been fully established, which will easily cause the indentation of the Babbitt alloy. In the embodiment of the present invention, the calibration process of the rolling mill is optimized, ...

Embodiment 2

[0049] see figure 2 , the embodiment of the present invention also provides a control device for preventing the burnout of the back-up roll bearing package of the finishing mill. The device is implemented based on the control method for preventing the burnout of the back-up roll bearing package of the finishing mill provided in Embodiment 1. The device includes:

[0050] The calibration optimization unit 201 is used to optimize the calibration process of the rolling mill, cancel the static pressing of the rolling mill, and adopt the dynamic pressing method of turning the car first and then pressing down.

[0051] The roll gap control unit 202 is used to raise the roll gap when the rolling mill passing steel gap is at a creeping speed; after the rolling mill speeds up, press down the roll gap to the set roll gap value.

[0052] Further, the device provided by the embodiment of the present invention also includes:

[0053] The temperature monitoring unit 203 monitors the furna...

Embodiment 3

[0058] see image 3 , the embodiment of the present invention also provides a computer-readable storage medium 300, the computer-readable storage medium 300 is implemented based on the control method for preventing back-up roll bearing package burnout of the finishing mill provided in the first embodiment, the computer-readable storage medium 300 has stored thereon a computer program 310 which, when executed by a processor, implements the following steps:

[0059] Optimize the calibration process of the rolling mill, cancel the static pressing of the rolling mill, and adopt the dynamic pressing method of turning the car first and then pressing down;

[0060] When the rolling mill passes through the steel gap at the creeping speed, the roll gap is lifted; after the rolling mill speeds up, the roll gap is pressed down to the set roll gap value.

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Abstract

The invention relates to the technical field of finish rolling, in particular to a control method and a device for preventing bearing set burning loss of a supporting roller of a finish mill. The control method for preventing bearing set burning loss of the supporting roller of the finish mill comprises the following steps that the calibration process of a rolling mill is optimized, the static pressing of the rolling mill is cancelled, and a dynamic pressing method of first turning and then pressing is adopted; when a steel gap of the rolling mill is at a crawling speed, a roller gap is lifted; and after speed of the rolling mill is increased, the roller gap is pressed down to a set roller gap value. The control method and device for preventing bearing set burning loss of the supporting roller of the finish mill can solve the technical problem that in the prior art, a bearing set of the supporting roller of the finish mill is easy to burn, and the yield is also improved.

Description

technical field [0001] The invention relates to the technical field of finish rolling, in particular to a control method and device for preventing back-up roll bearing package burnout of a finish rolling mill. Background technique [0002] The lubrication method of the bearing package of the hot-rolled back-up roll is different from that of the work roll. The back-up roll adopts the oil film bearing lubrication method. In the early stage, the temperature is too high or the lock-up often occurs, resulting in abnormal burning of the bearing package. On the surface of the Babbitt alloy, there are obvious radial indentations, which are related to the static pressing action during each mill calibration, which is likely to cause burnout of the back-up roll bearing package of the finishing mill, resulting in unnecessary downtime. Contents of the invention [0003] The invention solves the technical problem in the prior art that the backing roll bearing packs of the finishing mill...

Claims

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Application Information

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IPC IPC(8): B21B37/58B21B37/74B21B33/02
Inventor 崔二宝刘志霍光帆张月林刘丰辛艳辉王磊王占东
Owner BEIJING SHOUGANG CO LTD
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