SU1371723A1 - Method of producing plated blank - Google Patents

Abstract

The invention relates to the preparation of cladding metal plates for the manufacture of bimetallic sheets in a batch process. In order to reduce the specific metal consumption and to obtain the rectangular edges of the workpiece before rolling, the side face of the slab is made with a concave depth equal to 0.9 - 1.1 times the width of the rolling width, and the value of the concavity is determined by the formula. The method provides a reduction in metal consumption by 30-80 kg, 2 Il, 1 table.

Description

00

The invention relates to ferrous metallurgy, in particular to the production of bimetallic sheets in a batch process.

The purpose of the invention is to obtain rectangular edges of the workpiece and to reduce the specific consumption of metal scrap.

Example. Manufacturing cladding metal blanks.

With a thickness of ho of 145 mm, a width of 1060 mm of different width of the workpiece, it is subjected to abrasion with an emery wheel over its entire surface, removing surface defects. Then, on the sides of its sides, with an emery wheel, concavities are made, which, to obtain a prefabricated cladding with a thickness of mm, have a value equal to (0.9-1.1) L 24.1-29.3 mm. Then, 20 to the entire perimeter for removal, surface rolling is carried out without breaking the tire defects. Then on the side

Ryny and cutting roll to dimensional dpiny. The side edge of the workpiece at this time is close to rectangular. Finished blanks are laid in a package for the production of bimetallic sheets.

The concavity is made with a depth equal to 0.9-1.1 of the broadening value when rolling a slab in length, and the magnitude of the concavity is determined from the shape of the sheets by the batch method.

mule

l s (b - h) mm,

where A is the value of broadening, mm;

3 is the coefficient of broadening at 10QO ° C, and 0.25;

Famous

18.8 24.1 26.8 29.5 32.2

h is the initial slab thickness, mm;

h is the final thickness of the cladding blank, mm.

Fig. 1 shows, before rolling, a cross section; FIG. 2 is the same, within the indicated limits of concavity and the resulting cross section of the cladding metal blank.

On the side faces of slab 1, concavities 2 are performed, equal to 0.9-1.1 of the magnitude of the extension when rolled in length. The blanks 3 of the cladding metal obtained from these slabs 1 have an edge D close to a rectangular one.

In the preparation of slab for rolling the cladding metal blanks, it is subjected to stripping or cutting

using an emery wheel or other method, a concavity is made, the value of which is 0.9-1.1, the value of 25, the slab broadening during rolling along its axis by a given thickness, rolls and cuts the roll into dimensional blanks, which are then used for bimetal35

The effect of the shape of the side faces of the slab from which the cladding metal blanks are made to the specific metal consumption in the production of bimetallic sheets is given in the table,

+ 26.8

1,681

0.7ft 0.9 1.0 & 1,1D 1,2L

1,680 1,650 1,600 1,650 1,681

As can be seen from the table, the specified limits for making the concavity on the side faces of the slabs before rolling them on cladding metal blanks for bimetallic sheet production in a batch method ensure the achievement of the goal, ensure a reduction in the specific metal consumption by 30-80 kg

Claims (1)

Invention Formula The method of making a cladding billet, which includes rolling a slab with a width equal to the width of the cladding billet and cutting, I distinguish u and so that, in order to ensure that the rectangular edges of the billet are obtained after rolling and to reduce the specific metal consumption, the side face of the slab before rolling is given a concave shape, with a depth of 0.9-1.1, the slab broadening during rolling this concavity is equal A a (bd - h) mm where A is the value of broadening, mm; .a is the coefficient of broadening at 1000 ° C,, 25; LD - initial thickness of slab, mm; h is the final thickness of the cladding blank, mm.