Deutsche Version

PulsPlasma® CVD Utilization

Valve bodies and deep-drawing dies, even with undercuts and bored holes, can be coated with a wear-resistant hard material layer at treatment temperatures below 550°C.

Tools made of super high speed steel (HSS) or cold work steel, such as milling cutters or forming tools, can be initially plasma-nitrided and subsequently CVD-coated in a single process. This combined treatment will greatly enhance the product's service life. It improves the adhesion of the hard coating while increasing the substrate's load-bearing strength through the preceding plasma nitriding step (without white layer)

TOOLS :
cutting inserts	=>	Carbide, HSS
milling cutters	=>	high speed steel, HSS
punches	=>	high speed steel, HSS
die-and mold making	=>	cold working steel

SPECIALITIES :
Distortion ?	=>	negligible by reduction of heat treating temperature
Post machining ?	=>	no, because distortion and increase of surface roughness negligible, so that finally machined parts can be treated
Homogeneity ?	=>	very good, due to excellent temperature distribution even for complicated contours
Overheating ?	=>	The heating of sharp edges can be controlled by PulsPlasma®, so that an overheating is prevented
Support ?	=>	By the PulsPlasma® nitriding a good support for thin hard coating can be obtained
Masking ?	=>	reliable by metal or paste coating
Post cleaning ?	=>	not necessary

EXAMPLE :
		Cutting inserts made of carbides will reach a high increase of lifetime by plasma assisted CVD
		Milling cutters: A pre-treatment by PulsPlasma® nitriding the wear of sharp edges by breaking out of material is reduced.