RU675U1 - Rolling roll - Google Patents

Abstract

A rolling roll with a convex-concave relief deposited on the surface, characterized in that it is provided with a cylindrical shell with a wall thickness of not more than the depth of the relief and a hardness of not less than the hardness of the rolled workpiece, but not exceeding the hardness of the roll.

Description

Ortucafekc ic

02.

 B2IB2I / 02

INDUSTRIAL FELT

The proposed utility model relates to the field of metal forming and can be used in the manufacture of aluminum strip with a convex-concave relief.

Known conical rolling roll with a convex-concave relief deposited on the surface (Japan z. - 62-15300 MM B2IB 1/02, 8/00 - 1987).

This roll does not allow to obtain an aluminum tape of high quality surface, because during the rolling process, aluminum particles adhere to the roll, followed by transfer of the adherents to the rolled sizing tape.

Known rolling roll with applied to the surface vyshgklo-concave relief (Shonia z. No. 55-126 MKI B2IB 27 / 02.1980).

This roll does not allow to obtain aluminum tape of high quality surface, because during the rolling process, aluminum particles adhere to the roll, followed by transfer of the adherents to the rolled strip. In addition, the convex parts of the topography of the roll at the exit of the deformation zone during rolling produce a tearing of the workpiece material from its concave part, which violates its integrity.

A rolling roll with a convex-concave relief applied to the surface is proposed; equipped with a cylindrical shell with a wall thickness not exceeding the depth of the relief

and hardness not less than the hardness of the rolled stock, but not exceeding the hardness of the roll.

The proposed rolling roll differs from the prototype in that it is provided with a cylindrical shell with a wall thickness of not more than the relief depth and a hardness of not less than the hardness of the rolled stock, but not exceeding the hardness of the roll.

The technical effect during the operation of this roll is to improve the surface quality of the rolled aluminum relief tape by eliminating the jamming of the rolls, as well as to increase its mechanical properties by eliminating the tearing of material at the exit of the deformation zone during rolling.

The use of the proposed rolling roll eliminates direct contact of the workpiece with the roll, which eliminates the aluminum coating of the roll and, accordingly, rolled-aluminum tape, providing high surface quality and a clear relief on the product. The metal shell works as a technological lubricant and, in addition, as a result of the sliding of the convex parts of the roll topography along its inner surface, the workpiece material does not tear out from the deformation zone on the run.

When the shell thickness is more than the depth of the roll topography, the pressure on the rolled billet smoothes the topography, as a result of which the blurring appears on the product.

When the hardness of the metal strip is less than the hardness of the workpiece, the roll relief pushes through the sheath material, which during the rolling process does not bend and does not fit the roll relief, which leads to a fuzzy transfer of the given relief to the J // rolling

Wavy aluminum tape.

When the hardness of the metal tape exceeds the hardness of the rolls, it does not fit the rolls during rolling, depending on the rolling pressure, the tape either breaks or the relief on the product is not printed

The essence of the proposed utility model is shown in the drawing.

The utility model consists of a rolling roll (I), with a convex-concave relief (2) deposited on the surface, on which a cylindrical metal shell (3) with a wall thickness (Hj) of no more than the depth of the relief (Hg) and hardness of at least the hardness of the rolled blanks, but not exceeding the hardness of the roll.

The work of the rolled roll is,

An aluminum flat billet is passed between two rolls of the rolling mill with compression, providing such a pressure of the rolled metal on the shell of the roll that it provides and repeats its relief. As a result, at the exit from the rolls of the rolling mill, an aluminum strip is obtained with a convex-concave relief repeating the relief of the rolling rolls. A cylindrical metal shell, excluding direct contact of the rolled billet with the topography of the rolls, works as a technological lubricant.

The vayaks were tested on the DUO 260 mill. A convex-concave relief of the type orange peel 0.3 mm deep was applied on them. The hardness of the rolls was 95 units. Shore. As a cylindrical shell, stainless steel 0.25 mm in hardness of 22 Shr. Hardness of an aluminum tape - but.

tovky was 5 units, according to Shrru,

Laminated 100 kg of aluminum tape with a convex-concave relief. The yield was 80 versus 62 when using the prototype roll.

The proposed utility model allows to improve the surface quality of the rolled embossed aluminum strip by eliminating the aluminum coating of the rolls, and also to improve its mechanical properties by eliminating the tearing of the material at the exit from the deformation zone, which leads to an increase in the yield by 17-18.

During operation and wear, the metal shell is easily replaced

REP. 1SCAPE) BY AUTHORS:

.S. ZhKAROV

V.A. TARASOV

.M. SOSSCHYUV

S.I. CHEVSH

E. I. ZIMIN

D.O. MIZHTYUK

Yu.I.shkov

Claims (1)

A rolling roll with a convex-concave relief deposited on the surface, characterized in that it is provided with a cylindrical shell with a wall thickness of not more than the depth of the relief and a hardness of not less than the hardness of the rolled workpiece, but not exceeding the hardness of the roll.