Control method of high-carbon steel head impact marks
A control method and technology of high carbon steel, applied in the direction of tail end control, temperature control, etc., can solve problems such as roll marks on the surface of strip steel, and achieve the effect of improving surface quality
Active Publication Date: 2020-05-26
BAOSHAN IRON & STEEL CO LTD
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
It is used to solve the problem of periodic roll marks or indentation defects on the strip surface during the production of high carbon steel
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] According to different steel layers, the present invention precisely controls process water such as finish rolling and descaling, and avoids the head area of the strip steel; at the same time, combines the experience of safe use of finish rolling work rolls to control the flow and pressure of roll cooling water.
[0028] Control method of the present invention comprises three aspects, (1) to the control of finish rolling 2# descaling case inlet and outlet high-pressure descaling water; (2) to the control of the stand water between each stand of finish rolling; 3) The control of the cooling water of each stand of the finish rolling is as follows:
[0029] 1. For the high-pressure descaling water at the entrance and exit of the 2# descaling box in the finishing rolling area, the cutting head and tail cutting signals of the flyi...
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 PUM
Login to View More Abstract
The invention relates to a control method of high-carbon steel head impact marks. The control method of the high-carbon steel head impact marks comprises three parts that (1) a corresponding timing control manner is adopted, and opening and closing of strip steel high-pressure descaling water is performed according to the strip steel cutting head and cutting tail signals; (2) the rack water is controlled by adopting a corresponding control time sequence through opening and closing signals of racks; and (3) the flow and pressure of the roller cooling water of the racks are set according to thesteel grade of the strip steel, and the roller cooling water of the racks is controlled. According to the control method, precise control is carried out on process water such as fine rolling and descaling, and the head area of the strip steel is avoided; and at the same time, the flow and pressure of the roller cooling water are controlled in combination with the safety use experience of a finishrolling working roller, and the problem that during the high-carbon steel production process, periodic roller printings or indentation defects exist on the surface of the strip steel is solved.
Description
technical field [0001] The invention relates to a finishing rolling unit of a hot continuous rolling mill, in particular to a method for controlling impact marks on the head of a high-carbon steel. Background technique [0002] like figure 1 , The process flow of the hot rolling production line roughly includes heating furnace 1, rough rolling 2, finish rolling 3, layer cooling 4, and coiling 5 processes. The hot rolling process is as follows: 210-250mm thick continuous casting slab is heated to about 1200 degrees by the hot rolling heating furnace, after descaling in the 1# high pressure water descaling box 6, it enters the first rough rolling stand 7 and rolls one pass , and then roll five times in the second rough rolling stand 8, and pass through the third and fourth rough rolling stands 10 each pass, and finally roll into an intermediate billet with a thickness in the range of 36-65mm. Finished products have different width target values to complete the slab width r...
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 Application Information
Patent Timeline
Login to View More IPC IPC(8): B21B37/72B21B37/74
CPCB21B37/72B21B37/74
Inventor 吴真权李华明王金涛杨宴宾胡平奚昌明沈思刚
Owner BAOSHAN IRON & STEEL CO LTD