Sprayform Holdings Limited

Sprayforming Developments Limited

Ford Motor Company Limited

British Technology Group Limited

Allen Dennis Roche

Alfred R Singer

Richard Michael Jordan

Gordon I Davies

Joseph McGeough

A facsimile of article to be produced by tooling is laid in register with a first tooling part and sprayed metallic material is deposited over the first tooling part and the facsimile of the article in order to form a second tooling part. The first tooling part typically comprises a metallic material and portions of the first and second tooling parts bounding the article facsimile are typically in metal to metal contact with one another. The tooling parts are separated and the article facsimile removed.

Tooling production

Filling porosity or voids in articles formed in spray deposition

Atomized metal is deposited metal onto a substrate so as to cause at least partial solidification of the deposited metal; further atomized metal is deposited onto the partially solidified deposited metal on the substrate; and the metal deposited onto the partially solidified deposited metal is allowed to fully solidify on the substrate; the cooling of the further deposited metal, and the composition of the metal and/or of a gas used in the atomization of the further atomized metal being tailored such that volumetric contraction on solidification and cooling of the further deposited metal is compensated for, when the deposited metal has been cooled to ambient temperature, by volumetric expansion in a reaction or phase change in the further deposited metal.

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Aberdare, United Kingdom

Allen Dennis Roche