Transverse variable thickness plate strip and its preparation method
A sheet and strip, variable thickness technology, applied in the direction of sheet/plate, metal rolling, building components, etc., can solve the problem of little research on the horizontal variable thickness strip rolling technology, to avoid low production efficiency, The effect of saving metal materials and reducing the weight of the structure
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Embodiment 1
[0038] The cross-section of the strip to be rolled is as Figure 6 as shown in A6;
[0039] Four kinds of first rolling mills are adopted; the circumference of the cylinder of the upper work roll of the first kind of first rolling mill is provided with a protrusion, and the circumference of the cylinder of the lower work roll is provided with a groove; There is a protrusion and a groove on the circumference of the cylinder of the upper work roll, and a protrusion and a groove are provided on the circumference of the cylinder of the lower work roll; the cylinder of the upper work roll of the third type of first rolling mill There is one bulge and two grooves on the circumference, two bulges and one groove on the circumference of the cylinder of the lower working roll; There are two protrusions and a groove, and there is a protrusion and two grooves on the circumference of the cylindrical surface of the lower work roll; the roll gaps of the four first rolling mills respectively...
Embodiment 2
[0056] The structure of the upper and lower work rolls of the first rolling mill adopted is the same as the first rolling mill of the first kind in embodiment 1; the roll gap forms a U-shaped curve structure; the plate and strip to be rolled is carried out transition rolling with the first rolling mill, and Form a middle plate strip with a special-shaped structure in the middle, and the special-shaped structure is a U-shaped curve structure;
[0057] Six kinds of second rolling mills are used respectively, and the roll gap cross-section of the work roll gap structure is horizontal axis symmetric type; figure 1 As shown in A1, B1, C1, D1, E1 and F1; the middle plate strip with special-shaped structure in the middle is formed and rolled by the second rolling mill to make six kinds of transversely variable thickness plates and strips, and the structures are as follows figure 1 shown in A1, B1, C1, D1, E1 and F1;
[0058] Carry out band tension rolling in rolling process, method ...
Embodiment 3
[0066] The structure of the upper and lower work rolls of the first rolling mill adopted is the same as that of the second first rolling mill of embodiment 1, and the roll gap constitutes a horizontally placed S-shaped curve structure; system, making the middle plate strip with a special-shaped structure in the middle, and the special-shaped structure is a horizontally placed S-shaped curve structure;
[0067] Six kinds of second rolling mills are used respectively, and the roll gap cross-section of the roll gap structure is vertical axis symmetric type; figure 2 Shown in A2, B2, C2, D2, E2 and F2 of A2, B2, C2, D2, E2 and F2; the middle plate and strip with special-shaped structure in the middle are formed and rolled by the second rolling mill to make six kinds of transversely variable thickness plates and strips, and the structures are as follows figure 2 shown in A2, B2, C2, D2, E2 and F2;
[0068] Carry out band tension rolling in rolling process, method is with embodim...
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