DE733324C - Cold plating of steel strips - Google Patents

Description

Cold Plating of Steel Strips There are insertion devices. known for cold rolling mills to roll sheet metal strips in several layers which a number of superimposed, easily interchangeable, but fixed Separation plates are used, which together with side guide parts individual Form guide slots for the rolling stock.

These known insertion devices are intended to be superimposed on several Sheet metal strips precisely aligned and fed to the roller pair in a single operation will. When rolling in the package, each strip is stretched to the same extent. aside from that but here thin sheets are to be rolled so that they do not differ significantly between edge and center result or that no sheets with stretched edges and of various widths can be made. The individual dividing plates of this well-known Devices are fixed in the rolling direction, but perpendicular to the rolling direction movably arranged and are by a wedge after .dem introduction of the individual Metal strips pressed together.

These known insertion devices can, however, be used for cladding mills in general not especially not for feeding mills for cladding Aluminum on iron in thick layers, especially for the production of use aluminum-clad bearing shells, as the materials to be clad be stretched to varying degrees during plating. .

According to the invention, for such rolling mills for cold plating steel strips of a thickness of 4 mm and above with a layer of aluminum or aluminum alloys of 0.5 mm and above, the use of a known, correspondingly modified guide for. Proposed feeding of two superimposed sheet metal strips with two guide slots, which extend almost to the roll gap.

In the drawing is an example of the G, egerrstandes of the invention shown, although Fig. i shows the device in longitudinal section and Fig. 2 kn Cross-section according to A-B.

The belts i and 2 are guided by guides 4 that are closed on all sides and 5, which are separated from one another by a wall 3 -arranged until immediately out in front of the nip. Two pressure rollers G, which are mounted between support rollers 7 are held by the double wedge-shaped pointed ends of the tape. The guide .4, which serves to accommodate the aluminum strip, is correspondingly smaller in width held as the guide 5 for the iron band. Instead of the pressure and backup rollers A conventional two-roll cladding mill can of course also be used will. The internal dimensions of the guides 4 and 5 are kept so that both the aluminum band as well as the iron band pulled through the roller with little play can be, whereby each band for itself a special degree of deformation and thus can be subjected to a special stretch.

The subject matter of the invention provides for a sideways evasion of the two strips avoided during plating and on the other hand with the tightest guidance good plating is guaranteed. This is particularly important when Plating of pre-workpieces for the production of aluminum-clad bearing shells, since the two materials are subject to particularly strong deformation here, especially due to the extraordinarily high mechanical stresses during processing and during operation the two layers adhere particularly closely and firmly to one another have to

Claims (1)

PATENT CLAIM The use of up to almost an Gien. Nip Approaching closed rolling stock guides for cold rolling mills zaen cold cladding of steel strips with a thickness of 4 mm and finite an edition of Aluminum or aluminum linings of 0.5 ^ nni thickness = and above.