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Material Group 10: Self-fluxing Alloys

Using these materials produces coatings which, after application onto the component by means of oxyacetylene flames, are fused in a controlled atmosphere furnace or vacuum furnace or inductively (two-step procedure). These components are processed using powder-flame spray systems. In a one-step procedure, both the application and melting of the powder happen simultaneously. These materials yield a gas-tight, almost non-porous, wear resistant layer which is permanently bonded to the base material. They are distinguishable by their high wear resistance, low friction values, large punctual load capacities, and high corrosion resistance against a multitude of corrosive substances. By inclusion of hard metals, either alone or in combination with other, like tungsten or chromium carbide, these coatings can withstand the most extreme wear stresses. The melting temperatures are, depending on the materials, around 970 to 1,150 ° C.

Material Group 20: self adhesive spray powders

With these materials, coatings are created which are as undercoatings for spray powders in material groups 30 and 40. Additionally, in this way. Single-layer systems can be created which are distinguishable by their high adherence, tensile strength, low porousness, and good corrosion and wear resistance. Coatings can be made in thicknesses up to 10mm. These coatings have low susceptibility to cracking, even in high operating and spraying temperatures.

Material Group 30: Standard Spray Powders

This group encompasses pure metals, non-ferrous metals, low and high alloyed steels and hard metals like tungsten carbide with nickel or cobalt matrix, and chromium carbide of various compositions. These spray powders are used to produce coatings for many purposes, all of which require an undercoating from material group 20, except for those which are self-adhering like molybdenum or tungsten, thinly sprayed plasma coatings and all HVOF spray coatings.

Material Group 40: Ceramic Spray Powder

Ceramic spray coatings offer a wide range of possible uses. They can be identified by their high wear resistance and hard, chemical resistance to acids and alkalis and, depending on requirements, good thermal and/or electro conductivity or electrical insulation, high temperature resistance, and that they are partially not wetted by molten metals. Except for very thin coatings, ceramic coatings require an undercoat from material group 20.

Material Group 50: Spray Wires

These materials are processed with oxyacetylene or electrically. They provide a cost effective alternative to spray powders but generally require the application of purer, dryer pressurised air and in most cases also an undercoat. Exceptions to this are characteristically adhesive materials and molybdenum.

Material Group 90: Accessories

This group contains various additional supplies which are nessecary or useful for thermal spraying, such as sealers, blasting as brasives, masking fluid, and cover bands.

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