JPS61209785A - Method and apparatus for rolling clad plate - Google Patents

Abstract

PURPOSE:To increase adhesive power and to improve the adhesion of a clad plate by working at least one of the surfaces to be adhered of plural different metallic plates to a roughened surface to increase contact area and sliding frictional force. CONSTITUTION:At least one surface of the surfaces to be adhered of the plural different metallic plates are worked to the roughened surface by a dull roll B14 or pinch roll. The plural different metallic plates Pa, Pb are rolled and adhered in this state. The contact area and sliding frictional force are increased and the plates are locally heated up and softened, by which the adhesive power is increased and the adhesion of the clad plat is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method and apparatus for rolling a clad plate.

[Conventional technology] Conventionally, by stacking and rolling two dissimilar metal plates,
When manufacturing a clad plate, no special processing is applied to the bonding surfaces of both metal plates.

[Problems to be Solved by the Invention] Therefore, there was a problem that the adhesive force between the two metal plates was weak.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolling method that can produce a clad plate with higher adhesive strength, and a rolling apparatus suitable for carrying out the method.

[Means for Solving the Problems] The present invention solves the above problems and has the following configuration.

First, in the method of rolling a clad plate according to the present invention, at least one of the surfaces of a plurality of dissimilar metal plates to be bonded to each other is
It is characterized by roughening the surface using a roughening means, and then overlapping and rolling.

Further, the clad plate rolling apparatus according to the present invention includes a pair of rolling rolls that bond metal plates to each other by stacking and rolling a plurality of dissimilar metal plates, and a pair of rolling rolls that are arranged on the entry side of these rolling rolls and that are bonded to each other. It has a pair of surface treatment rolls through which one of the metal plates to be passed is passed, and a roll surface of the pair of surface treatment rolls is used as a roll that comes into contact with the adhesive side of the metal plate to be passed through. It is characterized by the use of dull rolls with large roughness.

[Function] According to the above-described clad plate rolling method and apparatus, by increasing the roughness of the bonding surfaces, the contact area between the metal plates increases, and sliding occurs on the contact surfaces of the metal plates to reduce frictional force. increases, and as a result, the adhesive force between the metal plates increases.

[Examples] Each of the four embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram of the first embodiment.

In the method of this embodiment, two dissimilar metal plates Pa and Pb wound around coils A and H, respectively, are placed on pinch rolls 1 and 2.
By feeding the metal plates Pa and Pb in the direction of the arrow and simultaneously feeding them between the upper and lower rolling rolls 4.5 of the rolling mill 3, and rolling the metal plates Pa and Pb in a superposed state, both the metal plates Pa and P
The cladding plate P is obtained by gluing the parts b together. Before winding the metal plate Pa around the coil A, the surface to be bonded is roughened using a surface roughening means (not shown).

By doing so, both metal plates Pa when rolled.

PB is firmly bonded and integrated. This is because when the adhesive surface is rough, the contact area between both metal plates Pa and Pb increases,
This is because slipping occurs at the interface between the two, increasing the frictional force, and these changes contribute to strengthening the adhesive force.

It goes without saying that the adhesive surface of the metal plate Pb on the other side may also be roughened.

FIG. 2 is an explanatory diagram of the second embodiment.

The rolling apparatus in this embodiment has rolling rolls 13.14 above and below a pair of upper and lower rolling rolls 11.12, between the rolls 11.12, between the rolls 11.13,
Between the rolls 12, 14 there are roll gaps G, Ga, Gb through which the metal plates pass, respectively. Further, the rotation of the rolls is such that rolls 11 and 12 are in opposite directions, and roll 1 is rotated in opposite directions.
3 and 14 are rotated in opposite directions relative to rolls 11 and 12, respectively. Then, the metal plate Pa supplied from the -blade side is wound around the roll 13, and the metal plate Pa is wound around the roll 11.1.
3 through the gap Ga, further wound around the roll 11, passed through the gear between the rolls 11 and 122, and guided to the other side, and the other metal plate Pb is also
Similarly, it is supplied from one side, wound around the roll 14, passed through the gap Gb between the rolls 12.14, further wound around the roll 12, and passed through the gap G between the rolls 11.12 at the same time as the metal sheet Pa. Ru. Then, within this gear G, both metal plates Pa and Pb are overlapped and rolled, thereby being bonded and led out to the other side as a clad plate P. and,
In this embodiment, dull rolls with large surface roughness are used as the rolling rolls 13 and 14.

According to the rolling apparatus of this embodiment, the metal plates Pa and Pb are
When rolling with gaps Ga and Gb, respectively, the surfaces that contact the dull rolls 13 and 14 are roughened by the dull rolls 13 and 14. When the roughened surfaces then pass through the gap G, they are superimposed on each other and rolled to be firmly bonded and taken out as a clad plate P.

In addition, as shown by the two-dot chain line in the figure, the metal plate Pa.

The pb may not be wound around the rolling roll t1.12, but may be pulled to the left in the figure by a tension roll 15.16.

FIG. 3 is an explanatory diagram of the third embodiment.

In the rolling apparatus of this embodiment, the metal plate Pa, which is the main material, is transferred horizontally in the direction of the arrow by a pair of upper and lower pinch rolls 21 and 22, and
At the same time, a metal plate pb serving as an auxiliary material is fed obliquely upward from below the entrance side of the rolling mill 23, and is fed between the rolling rolls 24.25.
In between, both the metal plates Pa and Pb are overlapped and rolled, whereby the metal plates Pa and Pb are bonded together to obtain the clad plate P. In this rolling apparatus, the pinch rolls 21 and 22 are used for surface processing, and the lower roll 22 is particularly used as a dull roll.

In this device, the pinch rolls 21 and 22
By sending out the metal plate Pa while rolling it slightly,
The lower surface of the metal plate Pa, that is, the adhesive surface with the metal plate pb is formed roughly. The roughened surface is then passed through rolling rolls 23
．． 24, the metal plate Pb is overlapped with the metal plate Pb and rolled, so that it is firmly bonded and taken out as the clad plate P.

FIG. 4 is an explanatory diagram of the fourth embodiment.

In this embodiment, one more metal plate Pc is added from above to the third embodiment to obtain a three-layer clad plate P. In this case, the upper pinch roll 21 is also a dull roll in order to roughen the upper surface of the metal plate Pa, which is the adhesive surface to the metal plate Pc. The rest is the same as the third embodiment, so the same reference numerals are given and the explanation is omitted.

In addition, in the above-mentioned example, the case where a dull roll was mainly used as a means for roughening the surface of a metal plate was explained, but in carrying out the rolling method of the present invention, it is not limited to this.

Furthermore, in the above embodiments, the case where two or three metal plates are bonded is described, but the present invention also applies to the case where four or more metal plates are bonded together by rolling to produce a clad plate. Of course it can be applied.

[Effect of the invention] According to the clad plate rolling method and apparatus according to the present invention,
Because the roughness of the bonding surfaces of the metal plates is increased and rolling is done overlapping them, the contact area between the metal plates increases, and sliding occurs on the contact surfaces of the metal plates, increasing frictional force. , As a result, the adhesive force between the metal plates increases. Therefore, a clad plate with high integrity can be obtained.

Further, since the rolling apparatus of the present invention employs dull rolls as the surface roughening means, it has the advantage that it can be easily installed on the rolling line.

[Brief explanation of drawings]

1 to 4 are side views for explaining each embodiment of the present invention. P a, P b, P c... Metal plate, P...
... Cladding plate, 3.23 ... Rolling machine, 4,
5, 11, 12, 13, 14゜24.25...
Rolling roll, 21.22...Pinch roll. Second factor ρ0

Claims (2)

[Claims] (1) After roughening at least one of the surfaces of the plurality of dissimilar metal plates to be bonded to each other using a surface roughening means,
A method of rolling a clad plate, which is characterized by rolling the clad plate in an overlapping manner. (2) A pair of rolling rolls that bond the metal plates together by stacking and rolling multiple dissimilar metal plates, and one of the metal plates that is placed on the entry side of these rolling rolls and is bonded to each other. A dull roll having a large roughness of the roll surface is used as a roll that contacts the adhesive side of the metal plate to be threaded among the pair of surface processing rolls. A clad plate rolling device featuring: