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Rolling method for single-face periodically variable thickness plate strip materials

A variable thickness and periodic technology, applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve problems such as uneven welding edges, uneven placement of stamping dies, and impact on project quality.

Active Publication Date: 2017-03-22
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current production technology of differential thickness plate is that only one uncoiler and one coiler are used, and a single steel coil can be used for traditional single-coil double-sided periodic variable-thickness strip rolling; , The reduction of the lower roll to the rolled piece is symmetrical, and the produced plate and strip are called double-sided differential thick plates after shearing. For thicker (≥1.5mm) double-sided differential thick plates, the There are uneven placement defects in the stamping die, which lead to problems such as uneven welding edges, which seriously affect the quality of the project

Method used

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  • Rolling method for single-face periodically variable thickness plate strip materials
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  • Rolling method for single-face periodically variable thickness plate strip materials

Examples

Experimental program
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Effect test

Embodiment 1

[0113] The rolling device used in this embodiment is as figure 1 As shown, the rolling device is sequentially provided with a first uncoiler 1, a first guide roll 2, a first pinch roll 3, a second uncoiler 4, a second guide roll 9, and a second pinch roll along the rolling direction. 10, four-high rolling mill 12, the third pinch roll 13, the third guide roll 15, the first coiler 17, the fourth pinch roll 18, the fourth guide roll 20 and the second coiler 22;

[0114] A first thickness gauge 7 is provided between the first guide roll 2 and the first pinch roll 3, a second thickness gauge 11 is provided between the second pinch roll 10 and the four-roll mill 12, and the third pinch roll A third thickness gauge 14 is provided between the roller 13 and the third guide roller 15, and a fourth thickness gauge 19 is provided between the fourth pinch roller 18 and the fourth guide roller 20;

[0115] Below the first uncoiler 1 is provided with a first loading car 6, below the second...

Embodiment 2

[0208] This embodiment is a method of rolling double-sided periodic side thickness plates and strips using a rolling device with double uncoilers and double coilers. The rolling device used is the same as that of Embodiment 1, the difference is that the rolling method Different, in the rolling process of the method of this embodiment, there is only one uncoiler and one coiler working under the working state, and the double-sided differential thick plate rolling of single coil strip is carried out; the other uncoiler and coiler In the state of material preparation, two groups of equipment are formed. The first group of equipment works, and the second group prepares materials. The specific group rolling method is:

[0209] The first group of equipment: the second loading car, the second uncoiler, the second guide roll, the second pinch roll, the second thickness gauge, four-roll mill, the third thickness gauge, the third pinch roll, the Three guide rollers, first coiler and firs...

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Abstract

The invention disclose a rolling method for single-face periodically variable thickness plate strip materials, and belongs to the technical field of metal rolling. According to the method, double-strip synchronous variable-thickness ply rolling is conducted through two uncoilers and two coilers, that is, the two uncoilers and the two coilers are arranged on two sides of a rolling mill correspondingly. The rolling method includes the specific steps that (1) feeding is carried out, specifically, upper-layer raw plate strip materials and lower-layer raw plate strip materials are installed on the corresponding uncoilers; (2) strip penetrating is conducted, specifically, the upper-layer raw plate strip materials and the lower-layer raw plate strip materials are welded to guide strips of the corresponding coilers separately through guide strip movement and welding, so that strip penetrating is completed; (3) variable-thickness rolling is conducted, specifically, setting of rolling parameters and control over alignment, speed, thickness, tension and the like in the rolling process are included; and (4) the single-face periodically variable thickness plate strip materials are obtained and moved out. By the adoption of the method, rolling of the single-face periodically variable thickness plate strip materials and double-face periodically variable thickness plate strip materials can be realized, different production requirements are met, the rolling efficiency is greatly improved, and the production cost is lowered.

Description

Technical field: [0001] The invention belongs to the technical field of metal rolling, and in particular relates to a rolling method of a single-sided periodically variable-thickness plate and strip. Background technique: [0002] Periodically variable-thickness strip rolling technology is a new type of production process. For example, in the production of auto parts, the periodically variable-thickness strip becomes a thick plate after cross-cutting, which can replace laser tailor welded blanks and be used for automobile stamping parts to reduce the weight of the vehicle, realize the lightweight of the vehicle, and achieve the purpose of energy saving and emission reduction. [0003] The current production technology of differential thickness plate is that only one uncoiler and one coiler are used, and a single steel coil can be used for traditional single-coil double-sided periodic variable-thickness strip rolling; , The reduction of the lower roll to the rolled piece is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/24B21B37/20B21B37/28B21B37/48B21B37/46B21B15/00B21B45/02
CPCB21B1/24B21B15/00B21B37/20B21B37/28B21B37/46B21B37/48B21B45/0239B21B2015/0092B21B2261/043B21B2263/02
Inventor 孙涛张广基吴志强
Owner NORTHEASTERN UNIV
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