DE1986309U - ENAMELLED OR PLASTIC COVERED CLADDING PANEL WITH CORROSION PROTECTION. - Google Patents

Description

B eschr eibu ng
to the utility model application

Baumann brothers, stamping and enamelling works, 8 ^ 5 Amberg concerning

^ - Enamelled or plastic-coated cladding panel] / with corrosion protection

It is known that when enamelling in particular large objects such as cladding panels for the Construction, tiles, wall panels for e.g. stoves and boilers, signs, billboards and the like on the often sharp

Edges of the sheet metal blanks of the enamel coating not in the required strength adheres, it to the sharp edges and especially corners to a drainage of the enamel seal comes. These inadequately enamelled areas, such as the points of support of the tips of the hearth racks, are often cause of corrosion by atmospheric substances and especially moisture.

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lG-33 587

For the items mentioned above, but not are enamelled but coated with a plastic material similar difficulties arise with the cut edges, bending edges, creases, grooves and the like where there is a local reduction in the adhesion of the plastic coating to the sheet metal base body. All of these places are at risk of corrosion in a humid atmosphere.

With both coatings, i.e. both the enamel as well as the plastic coating, surface defects, pores and the like occur either material-related or in the course of the individual processing stages Damage to the coating, with the metallic base material again being exposed to the atmosphere without protection *

It has now been shown that these difficulties in

can easily be remedied that after Applying the enamel or plastic coating to the object in an electrolyte by electrodeposition a metal, which is less noble than iron, on the stiffeners, on which there is bare metal, flawlessly against all occurring in the context of the application Corrosion can be protected. A special feature this protective coating can also be seen in the fact that as a result of the formation of a local element "-

follows "" pages 3 to 5 of August 18, 1967

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mentS between the noble base material iron and the; ■ " With the less noble layered metal, injuries can heal themselves. Basically this property is of e.g. zinc or cadmium layers on iron materials in the framework of the materials for the roof cladding or the rainwater discharge known; however it has not yet been

recognized that. this phenomenon is also very successful for a corrosion protection of enamelled or plastic coated objects, such as - - above were hinted at, can be applied.

This new edge or. Pore protection is more common Way by immersing the objects in an electrolyte and electrolytically depositing the metal in question achieved. But it results in terms of a good one Contact during electrolysis: certain difficulties. Sanding off the enamel or the plastic coating an easily accessible: point as a contact would / just an additional, dem. Create a grate accessible area .... However, one can reach a suitable contact, though before enamelling at the des. Iron or steel -.

attaching a rivet to the existing raw body “This will. when enamelling either covered or it consists of a metal to which enamel does not adhere and which is opposite Atmospheric and moisture resistant to corrosion. In completely analogue. You will remove the plastic or paint before the anti-rust layer

1G-33:

is applied electrolytically. :; -. ■ '■ "/

The enamelled objects are preferably heated cleanly before they are galvanized. The modern Email has one like that. good acid resistance that no attack occurs; but at the cut edges and in the Pores and surface defects are exposed by the pickling of the metallic material. During the subsequent Electroplating creates a perfect protective layer, if the plated metal is less noble than iron. Preferably used for this. Zinc or cadmium,

The objects protected after the innovation with enamel and plastic coating show improved resistance to corrosion by moisture .. ■ The cladding elements are particularly suitable for use in construction. In the case of plastic-coated panels, i.e. with an electrically.isolating layer, there is no need for expensive repainting at the trimmed or punched edges and holes, which does not guarantee rust protection; wherein the galvanic -. protection according to the innovation is however ensured ■■■■■ [that all points of the parent metal, 'which were somehow exposed to or covering d.enen as the plastic does not adhere properly, have a .verläßlichen corrosion protection ". ; "■ - ..'-- ■ ■: -.. -; '-: ■'.

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The innovation is explained in more detail with the help of the accompanying illustrations explained: -

-. Fig. «1, shows a schematic cross-section through an enamel tile. The sheet metal body 1 is coated on both sides with a base enamel 2 and carries the top enamel layer 3 ″ on the edges of the. Tile, i.e. at the cut edges of the sheet metal blank, the enamelling is generally inadequate. By electrolytic deposition of a metal that is less noble than iron, such as zinc or cadmium, in a suitable electrolyte, a secure anti-corrosion coating is applied to the edges H-. At the same time, pores in the enamel coating that extend down to the metal base, flaking or impressions of the firing frame are covered or filled with the protective metal layer. An enamelled object according to the innovation does not have any. Set up with exposed ferrous material. . -.

Fig »2 shows the hiring using a cover plate for ■ sound-absorbing room cladding. A plastic support 6 is located on the sheet metal base body 1. This composite material is trimmed and perforated.

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like cover plate a perfect corrosion resistance to lend under the conditions of use,.: are the cut edges 8 and the inner edges 9 after punching out acoustically effective openings 7 with a compared to the Sisengrund-, fabric covered with base metal. . . . . . , - '. . "., ...

: Protection claims SlXI i ^y . . '... ;

Claims (2)

8 MUNICH 90 DIPL. ING. G. PXTIiS SCHWEIEKEHSTRASSE Si DR.E.v.PECHMANN telepok 22 06 51 PATENTANWÄLTE TEIEeSlMMiDBESSÜ: PBOTEOTPATKKT MClfCHES lG-33 58? ■ '.' ■■. B 72 261 / 4-8c Gbm 18th December 1967 S ch u t ζ a η s ρ r ü ehe 1 «Enamelled or plastic-coated cladding panels with corrosion protection on edges and surfaces, thereby g. e k e η η ζ e ic h net that on the edges and in the pores - or surface defects a layer of a non-ferrous metal is present. . / 2. Articles according to claim 1, characterized in that g. ek e η nz eic h, -n. et that the layer consists of zinc or cadmium. '"-■' ■ - .- ^:..:: Objects according to claim 1 or 2, characterized in that a corrosion-resistant rivet is provided as a contact for the galvanic deposition of the layer. ■ 4 ~. Articles according to claim 3: thereby; ge: ke η η ζ e i ή.et that the rivet is made of metal,. is preferably made of copper. . .. ■■■. ^r 8111