Control method of tandem cold rolling mill emulsion section cooling

A segmental cooling and control method technology, applied in the direction of contour control, etc., can solve the problems that the surface quality of the finished strip steel in the rolling mill cannot be guaranteed, and achieve the effects of fast calculation speed, clear principle, and reduced slippage
CN101683660BActive Publication Date: 2011-07-20BAOSHAN IRON & STEEL CO LTD
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2011-07-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a control method of tandem cold rolling mill emulsion section cooling, comprising the following steps: a. collecting the device parameter of a rolling mill and the key parameter of band steel to be rolled; b. collecting a technological lubrication institution parameter; c. giving emulsion section cooling flow distribution initial value and iteration precision; d. calculating corresponding work roll thermal crown; e. calculating the lateral distribution value of a slipping factor; f. comparing the slipping factor maximum value with a critical value; g. calculating the lateral distribution value of a slip injury index; h. comparing the maximum value of the slip injury index with the critical value; i. calculating the corresponding strip shape distribution value; j. calculating the function value of a strip shape objective function; and k. judging whether Powell condition is available, and obtaining the control curve of the optimal section cooling flow. The control method of the invention combines device section condition with practical flow control precision to set the emulsion flow in sections, reduces problems of slipping, hot slip injury and the like caused by lubrication and ensures the strip shape and the surface quality index of chassis outlet strip steel rolled stock.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a production technology of continuous cold rolling, in particular to a method for controlling the staged cooling of emulsion in a continuous cold rolling mill. Background technique

[0002] figure 1 It is a schematic diagram of the continuous rolling process of cold strip steel, such as figure 1 As shown, the strip 1 is uncoiled from the uncoiler 2 and then sent to the frame. After being rolled by multiple stands, the strip 1 reaches a specified thickness and is sent to the coiler 3 for rewinding. The rolls of each stand include backup rolls 4 and work rolls 5 , wherein the work rolls 5 are in direct contact with the surface of the strip 1 . In the process of continuous cold rolling production, due to the deformation heat and friction heat generated by the deformation of the metal and the friction between the metal and the roll, the temperature of the roll surface gradually rises, forming a certain roll crown, producing a cer...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More