Want to know more about Surface Coating Technologies? As we all know, a zinc-aluminium alloy is sprayed on as corrosion protection. Tungsten carbide hard metal, bronze, nickel, NiCrBSi, chrome-nickel-iron alloys and molybdenum are used as wear protection in surface coating.
In thermal spraying the surface coating substance – powder or wire is fused with a flame spraying pistol and sprayed on the surfaces with high pressurised gases. Surface coating includes high speed flame spraying, powder flame spraying, wire-flame spraying and arc spraying.
These base elements neutrally and warp-free, individual parts and serial parts can be treated for repair and renovation, and job coatings and grinding. Surface coating can be carried out magnetically or non-magnetically.
Hot galvanising or hot dipping is also called surface coatings. The steel part is here dipped in an approx. 400°C hot zinc melt and the metal surface is coated. With this method too it cannot be excluded that the base joints change and distort.
Thermal spraying has high agitation levels and can be very economical depending on the part’s geometry. The chipping is often carried out in our company due to the effects of corrosion, wear and sliding characteristics.
In the surface coating with coat fusion several fused layers are placed above and next to each other to build up appropriate hardness. It cannot be excluded that the base joints change and distort.
Surface coating by electro plating are also very common. Hard chrome has very good glide properties. Small parts are usually nickeled and chromed in an electrolysis bath. The coat application rate in surface coating is time consuming anyway and usually is about 1/100 mm per hour.
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