SURFACE REFINEMENTS

	characteristic features	thickness	hardness	colour
teflon coating	self-lubricating	20-80µm		various colours possible
	food cabability
	good conductivity

anodizing	low scuff resistance	5-25µm		various colours possible
	high porosity
	colourable
	low thermic isolation
hard coating	high capacity of resistance to wear	30-200µm	ca. 400-450 Hv	grey, green, black
	good sliding behaviour		(depends on alloy and thickness)
	good surface hardness
	good anticorrosion properties
	food capability no conductivity
Kepla Coat®	high resistant to abrasion	30-80µm	ca.550 Hv	white
	superb sliding characteristics			(stainable)
	high hardness
	good anticorrosion properties
	no conductivity
chem.nickel plating	very hard	12-30µm	ca.700Hv	silvery to silk-mat
	high surface resistance
	excellent anticorrosion properties


Durni Coat®	very solderable	5-45µm	570 Hv	mirror finished
	chemical resistant

pretreatments for surface refinements

method	precedure - change of surface	applications
ball polishing	mechanical-chemical polishing process A polished surface - almost like chrome is caused by striking the ground of material with a hard medium (balls of stainless steel) with the spezific form of this medium an eben surface will also be achieved in very narrow radii.	the process is applicable to aluminium and similar soft materials
trowalisieren	(parts up to a size of max. 150 x 300 x 300 mm - the volumetric capacity is 800l) the several parts will be processed in ahorizontal-belt-workpiece-dryer or a round-hutch-granulate-dryer	gentle and even flash-removal of the workpiece
glass-bead-blasting ceramics-bead-blasting	the workpiece is blasted with glass-beads or ceramics-beads through nozzles	for parts with high optical demands, but also as preparative for chrome-plating and similar processes
sand blasting	contaminations (like scales, casting skin or similar) are removed sparingly. Plants up t0 5.000 x 5.000 x 8.000 mm	ideal cost saving process before new coatings, varnishing, chrome plating and any similar processes