Engineered Surfaces for Exceptional Performance
Engineered Surfaces for Exceptional Performance

Food Processing Equipment Industry

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Reinforced Stainless Steel Coating System for Cookware

Reason for use: The application of Arc sprayed Stainless Steel as a reinforced coating has been proven to drastically increase the working life of many types of cookware. By producing a thin Arc sprayed layer the fluoropolymer coating penetrates the sprayed surface. This produces high bond strengths and allows the high wear resistant Arc sprayed coating to protect the fluoropolymer coating.

Equipment: Arc Spray Equipment

Materials: Main Deposit: Stainless Steel or Titanium.

Arc Spray Process

In the Arc spray process, the raw material in the form of a pair of metallic wires, are melted by an electric arc. This molten material is atomised by a cone of compressed air and propelled towards the work piece. The molten spray solidifies on the component surface to form a dense, strongly adherent coating. Arc spray deposits possess a higher degree of bond strength than most other thermally sprayed deposits and the use of compressed air and electricity alone mean more economic coatings. 

Method

Cleaning

The surface should be free from grease, oil or other contaminants as this would affect the adhesion of the sprayed coating.

Blasting

The surface should be grit blasted; the standard of surface cleanliness required is as Swedish Standard SA3. Surfaces not being treated should be masked before blasting.

Application of Sprayed Coating

Spraying should begin as soon as possible after preparation and before any visible sign of deterioration occurs. The surface speed should not be less than 18 metres/minute (60 feet per minute).

  1. The Arc Spray equipment should be set up in accordance with the MSSA manual for the spraying of St/St or Titanium wire.
  2. The area to be sprayed should be cleaned with a clean air blast to remove any loose particles of grit.
  3. The Arc Spray Pistol should be set so that the spray stream is at 90° to the surface being coated and traversed at an even speed giving a uniform coating.
  4. Apply St/St or Titanium Coating to the required thickness.

Spraying Parameters

Contact us for more information on particular spraying parameters.

General

There should be the minimum of interruption from commencement of preparation to completion of spraying. At all times, the prepared surface should be protected from dust, dirt, moisture etc.