Control method for upward and downward head bending of plate blank
A control method and the technology of warping the buckle head, which are applied in the direction of rolling mill control devices, metal rolling, manufacturing tools, etc., can solve the problems of different control effects, high labor intensity, production stagnation, etc., and achieve high measurement accuracy and improved flatness , easy maintenance effect
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Embodiment 1
[0154] Example 1 (head warping situation):
[0155] refer to Figure 10 , the current thickness of the slab is Δh=15cm, and the rolling speed of the lower roll in this pass is V=2.3m / s. According to the steel type and pass before the slab is rolled, the speed difference setting value obtained from the layer file is ΔQ old = 4%, which means that the speed of the lower roll of the slab is 4% faster than that of the upper roll, and the slab warps upward after the current pass of rolling, such as figure 1 shown in . The image measurement function separates the edge of the upper surface of the slab from the background, the sampling interval is 1.5m, and the number of sampling points is 20 to represent the warping curve of the slab head. The coordinates of these 20 points are as follows Figure 5 As shown in , the specific values are as follows:
[0156] Form 2
[0157] serial number
1
2
3
4
5
6
7
8
9
10
X=
0
...
Embodiment 2
[0200] Example 2 (discount situation):
[0201] Such as figure 2 As shown, the current slab thickness Δh=19.7cm, the rolling speed of the lower roll V=2.3m / s, the speed difference setting value obtained from the layer file according to the steel type and pass before rolling is ΔQ old =0%, means there is no speed difference between the upper and lower rolls, and the slab is bent downward after the current rolling pass, such as figure 2 shown in . The image measurement function separates the edge of the upper surface of the slab from the background, and uses 20 sampling points to represent the warping curve of the slab head, and the sampling interval is 1.5m. The coordinates of these 20 points are as follows Figure 6 As shown, the specific values are as follows:
[0202] serial number
1
2
3
4
5
6
7
8
9
10
X=
0
7.8
15.5
23.2
31
38.7
46.5
54.2
62
69.8
Y=
-2.32
...
PUM
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