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Transversely partially thickened plate strip and its preparation method

A plate and strip, horizontal technology, applied in the direction of metal rolling, etc., to achieve the effect of improving bearing capacity, high production efficiency and low production cost

Active Publication Date: 2015-09-30
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the longitudinal variable-thickness plate and strip have been mass-produced; however, there is little research on the rolling technology of the transverse variable-thickness strip; there are many automotive lightweight parts that can be made by rolling the variable-thickness strip on the automobile, and some parts require longitudinal Variable thickness, and some parts need to change thickness horizontally

Method used

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  • Transversely partially thickened plate strip and its preparation method
  • Transversely partially thickened plate strip and its preparation method
  • Transversely partially thickened plate strip and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select cold-rolled strip steel as the plate and strip to be rolled;

[0035] Use the first rolling mill to carry out the first rolling of the plate and strip to be rolled; a trapezoidal groove is provided on the circumference of one work roll cylinder of the first rolling mill, and a trapezoidal groove is provided on the circumference of the other work roll cylinder. Trapezoidal bulge, the roll gap of the work rolls of the first rolling mill forms a U-shaped curve structure; after the first rolling pass, a rolled plate and strip are obtained, and there is a trapezoidal bulge on one surface of the primary rolled plate and strip , there is a trapezoidal groove on the other surface; the height of the trapezoidal protrusion is 0.1mm, and the depth of the trapezoidal groove is 0.1mm;

[0036] The second rolling mill is used to carry out the second pass rolling of the first-rolled plate and strip; an arc-shaped groove is provided on the circumference of one work roll cylinder...

Embodiment 2

[0043] Adopt cold-rolled steel strip as the plate and strip to be rolled; method is the same as embodiment 1, and difference is:

[0044] There are 2 trapezoidal grooves on the circumference of one work roll cylinder of the first rolling mill, and 2 trapezoidal protrusions are provided on the circumference of the other work roll cylinder. The roll gap of the work rolls of the first rolling mill forms 2 U Type curve structure; there are 2 trapezoidal protrusions on one surface of the primary rolling strip, and 2 trapezoidal grooves on the other surface; the height of the trapezoidal protrusions is 0.2mm, and the depth of the trapezoidal grooves is 0.2mm ;

[0045] The circumference of one work roll cylinder of the second rolling mill is provided with 2 arc-shaped grooves, and the circumference of the other work roll cylinder is provided with 2 arc-shaped protrusions. The roll gap of the work rolls of the second rolling mill constitutes 2 A V-shaped curve structure; there are 2...

Embodiment 3

[0054] Adopt cold-rolled strip steel as the plate and strip to be rolled; Method is the same as embodiment 2, and difference is:

[0055] There are 4 trapezoidal grooves on the circumference of one work roll cylinder of the first rolling mill, and 4 trapezoidal protrusions are provided on the circumference of the other work roll cylinder. The roll gap of the work rolls of the first rolling mill forms 4 U Type curve structure; there are 4 trapezoidal protrusions on one surface of the primary rolling strip, and 4 trapezoidal grooves on the other surface; the height of the trapezoidal protrusions is 0.3mm, and the depth of the trapezoidal grooves is 0.3mm ;

[0056] The circumference of one work roll cylinder of the second rolling mill is provided with 4 arc-shaped grooves, and the circumference of the other work roll cylinder is provided with 4 arc-shaped protrusions, and the roll gap of the work roll of the second rolling mill constitutes 4 A V-shaped curve structure; there ar...

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Abstract

The invention discloses a transversely locally thickened plate strip and a manufacturing method thereof, and belongs to the technical field of rolling. The transversely locally thickened plate strip comprises a base plate and at least one longitudinal rib. The manufacturing method includes firstly, preparing a plate strip to be rolled; secondly, performing a first rolling by a rolling machine with a trapezoidal groove on one working roll and a trapezoidal projection on another working roll; thirdly, performing a second rolling by a rolling machine with an arced groove on one working roll and an arced projection on another working roll; fourthly, performing a last rolling by a rolling machine with rib grooves circumferentially arranged on the cylindrical surface of one working roll. By the optimal design of the shape of the cross section of plates, local metal distribution, load conditions and structural characteristics on the cross section can be matched, and therefore metal materials are saved, and the target for reducing structural weight is achieved.

Description

technical field [0001] The invention belongs to the technical field of rolling, in particular to a laterally partially thickened plate strip and a preparation method thereof. Background technique [0002] Variable-thickness plate and strip are used in automobile manufacturing, shipbuilding, bridges and other industries, and have the advantages of saving material and weight, reducing weld seams, reducing costs, and improving efficiency. The production methods of variable thickness plates include laser tailor welding, rolling and so on; in recent years, the production of variable thickness steel plates by rolling method has been paid attention to because of its good quality, low cost and high efficiency; variable thickness plate strips can be divided into Longitudinal variable thickness plate strip, transverse variable thickness plate strip and three-dimensional variable thickness plate strip. Among them, the longitudinal variable-thickness plate and strip have been mass-prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/24
Inventor 支颖刘相华
Owner NORTHEASTERN UNIV LIAONING
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