A speed control method used in steel rolling process
A technology of speed control and process, which is applied to the driving device of metal rolling mill, rolling mill control device, metal rolling, etc. It can solve the problems of no looper between the rolling mills of the production line, affecting economic benefits, and small size, etc., to achieve Improve the pass rate, avoid the large size of the head and tail, and improve the stability of the effect
Active Publication Date: 2019-12-06
JIANGSU YONGGANG GROUP CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Rolling large-scale rebar, due to the heavy rolling load, usually requires off-stand rolling, and the finished stand is often selected for pre-finish rolling or intermediate rolling; the disadvantage of this kind of process arrangement is: there is no looper between the rolling mills of the production line, During normal rolling, the racks are basically tension rolled, resulting in a large difference in the size of the head and tail of the rebar, and the longitudinal ribs at the head or tail are unqualified. The overall performance is that the longitudinal ribs at the head and tail are too large, and the size of the middle part is too large. The phenomenon of small size; while the production of rebar is based on output and cost as the main competitive advantage, the entire production line is not equipped with special grinding and finishing equipment like the industrial bar production line; in this way, when rolling large-scale rebar, you have to Increase the amount of waste cutting at the head and tail of rebar to ensure the qualified product size, which seriously affects the overall economic benefits
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
[0031] Embodiment: a kind of speed control method that is used in rolling steel process comprises multiple rolling mills, and described rolling mill comprises K1, K2, K3-Kn multiple series, and the rebar of different diameter has different rolling mill series, as figure 1 shown in;
[0032] Such as figure 2 As shown, the K1 is the finished product pass rolling mill series, the K2 is the finished product previous pass rolling mill series, the K3 is the finished product and the previous pass rolling mill series, and the Kn is the initial rolling mill series, and the control method steps for:
[0033] (1) Write and input the program of the rolling mill according to the diameter of the required finished rebar;
[0034] (2), rebar enters from Kn and starts rolling work;
[0035] (3) When K1 bites the steel, and after a delay of 50ms-100ms, the K2-Kn cascade speeds up by 0.3%-0.5%;
[0036] (4) When the current signal of the rebar tail leaving K3 is obtained, and after a delay ...
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 discloses a speed control method for a steel rolling process. The speed control method for the steel rolling process mainly depends on an existing steel rolling production control system, the speed-increasing and speed-reducing adjust relationship of all sorties is reconstructed according to bitten current signals of a rack in production, the conversion of an original steel-drawing rolling state being changed into speed-increasing rolling and an original steel-stacking rolling being changed into micro-steel-drawing rolling is realized, the size difference of head and tail of a steel bar is effectively reduced, the length of the unqualified part of the head and tail size is shortened, the cutting waste quantity is reduced, and the finished material rate is improved.
Description
technical field [0001] The invention relates to the technical field of steel rolling, in particular to a speed control method used in the steel rolling process. Background technique [0002] With the construction of major projects such as high-rise buildings, underground tunnels, ocean, oil and natural gas exploration platforms, the market demand for large-scale steel products is increasingly strong, and the quality requirements are getting higher and higher. In order to gain the greatest competitive advantage in the market, manufacturing enterprises are competing to develop large-scale rebar. At present, the largest rebar in the market has reached Ф60. [0003] Rolling large-scale rebar, due to the heavy rolling load, usually requires off-stand rolling, and the finished stand is often selected for pre-finish rolling or intermediate rolling; the disadvantage of this kind of process arrangement is: there is no looper between the rolling mills of the production line, During n...
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 Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00
CPCB21B37/00B21B2275/06
Inventor 朱爱华陈兵郭玄
Owner JIANGSU YONGGANG GROUP CO LTD