Grillo-werke Ag

Jochen Spriestersbach

Jurgen Wisniewski

Michael Knepper

Armin Melzer

Norbert Schulz

Petra Merkel

Rudi Kube

J&uuml;rgen Wisniewski

Juergen Wisniewski

Frank Prenger

Markus Kattannek

Jürgen Wisniewski

The invention relates to a method for inert gas welding or inert gas soldering of workpieces (A) made of steel, aluminum, magnesium, copper, or the alloys thereof with workpieces (B) made of steel, aluminum, magnesium, copper, or the alloys thereof by using an additional molten metal alloy, workpieces (A) and (B) being made of identical or different metals or metal alloys. The inventive method is characterized by the following steps: a) the workpieces that are to be connected are contacted edge to edge or in an overlapping manner; b) the additional metal alloy containing a Zn/Al alloy is fused; c) the additional molten metal alloy is applied to the contact points or partial areas of the contact points of the contacted workpieces; d) the connected workpieces are cooled. Steps b) and c) are carried out immediately after one another while at least steps b) and c) are carried out by using an inert gas. The invention further relates to a wire that is used in said method.

Method for inert gas welding or inert gas soldering of workpieces comprising identical or different metals or metal alloys by means of an additional Zn/Al metal

The invention relates to zinc powders or zinc alloy powders with an inhomogeneous bulk density distribution depending on the particle size, wherein the difference of the bulk density measured according to ASTM B212 in the particle size range smaller than 75 &#x3bc;m and that in the particle size range greater than 150 &#x3bc;m is at least 0.5 g/cm, and the mean bulk density of the powder, measured according to ASTM B212, ranges from 1.8 to 4.0 g/cm. The invention is also directed to mixtures of said zinc powders or zinc alloy powders and to an alkaline battery including said powders.

Zinc powder or zinc alloy powder with inhomogeneous bulk density for alkaline batteries

The method for applying a zinc-based anticorrosion layer for reinforced concrete is characterized in that a layer consists of at least two layers, of which the first layer, directly sprayed on the concrete, is made of pure zinc and the second layer sprayed thereon is made of a zinc/alumimum alloy.

Thermally sprayed anticorrosion layer for reinforced concrete and method for making the preparation thereof

The method for improving the corrosion resistance of reinforced concrete coated with a thermal spray coat of metals, especially of zinc or zinc alloys, is effected by electrically connecting said spray coat with the armour and additionally coating it with a polyurethane resin which is applied as a low-viscosity solution in organic solvents.

Method for improving the corrosion resistance of reinforced concrete

Tin and zinc based shot for use as ammunition having a diameter of from 1.5 to 5.5 mm, containing, by weight, in addition to tin and the usual unavoidable contaminants, from 12 to 60% of zinc and from 0 to 5% of aluminum, but less than 0.1% of copper, less than 0.1% of iron, and less than 1% of lead.

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Duisburg, Germany

Jochen Spriestersbach