Technology Applications

Tthere is a variety of the Dymet applications found in a range of enterprises - from small workshops to large manufacturing companies. Most of the applications are determined by the major technology advantages low temperature spraying and high accuracy - and include repair and restoration of metal components such as engines, bearings, cases, shafts, rollers, alloy wheels; modfication of moulds and dies; corrosion protection; deposition of special coatings (elcetro conductive, anti-seizure, hermetic, heat resistant, spark shield, decorative) .

Repair and Restoration of Aluminium Engines and Components

DyMet equipment can be used for all restoration and repair works with aluminium parts. In comparison with argon-arc welding the use of Cold Spray equipment significantly facilitates the process of repair by reducing repair time. It does not require the surface preheating and provides a guaranteed hermetic sealing of the defected area.

Cold Spray technology can be effectively used in the elimination of defects and damages of such products as aluminium engine blocks and cylinder heads, alloy wheels (See picture on the right), inlet and outlet manifolds and other automotive components. Typical defects of castings are microcracks, flaws, cavities, bowls, through porosity. Often these defects may not affect the mechanical

One of the most typical use of the Low Pressure Cold Spray is repair of worn and defected metal parts, particularly. Figures (clickable) on the left show a block of a jet ski engine with a broken thin wall (2mm) that retains a sealing ring. It was possible to restore the wall by spraying an aluminium-zinc powder. It took only 5 minutes and did not cause any distortions or thermal stresses. Prior to metal powder spraying the surface was blasted with Dymet using an abrasive powder to ensure a reliable adhesion of the deposited metal to the substrate. The restored volume was machined at low cutting speed. The engine was re-assembled and installed back on the jet ski.

Anticorrosive Coatings

Zinc and zinc- aluminium coatings by Dymet can be used for corrosion protection of steel structures. In particular, they could be used to restore zinc layer on galvanised structures after they were welded.

The University of South Australia has conducted a comparative salt spray test of galvanised and sprayed samples. The test results confirmed the high anti-corrosive characteristics of the sprayed coatings. Thus, the trace amounts of red rust on zinc sprayed samples were noted after 118 hours, while on the galvanised plates after 72-96 hours. Some local companies are planning Dymet trials in this field.

Electro Conductive Coatings

The DyMet equipment is successfully used in the manufacturing of porcelain insulators used in power supply systems (See the figure on the right). The copper coating is deposited on the ends of porcelain cups and then metal electrodes are soldered to the cups.

As a result of the application of this technology it is possible to replace the technically complex and expensive operation of the silver baking usually used as a sublayer for soldering. The mechanical tests of adhesion of cold spray coatings with porcelain cups have shown that their quality is equal to the quality of the silver coatings; however the deposition rate and process costs are significantly lower, than in the existing technology.

Electro conductive coatings can be created on every metal or ceramic surface. Copper plating of bus-bar wires and connectors by the DyMet Cold Spray is more cost-effective than traditional metallisation processes.

Dymet D423
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Dymet Spray-On Solutions
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Dymet Applications

Dymet Technology Overview
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Dymet in Marine Applications
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Dymet in Oil and Gas Industry
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Dymet in Mould Repair
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Dymet in Repair and Restoration of Metal Components
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Dymet in Car Services and Repair
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