WCT has more than 60 years experience and know-how in the field of surface engineering.

In the 60’s and 70’s we developed technology for the surfacing of complex components in high temperature base metals used in the nuclear and fossil fuel power stations.

Nickel base Colmonoy alloys, cobalt base Wallex alloys, and all nickel alloys and other metals can be deposited on all types of base metals. Deposit thickness ranges from 0.5 to 5 mm depending on the process used.

We offer welded overlays using :
- Oxyacetylene
- Electric Arc
- TIG
- PTA (Plasma Transferred Arc)
- Spray & Fuse
- Furnaces for pre and post welding heat treatment

sprayed coatings

HVOF sprayed coatings of tungsten carbide, and wear resistant alloys produce highly bonded, dense and smooth coatings.
Deposit thickness ranges from 0.5 to 5 mm.
Very high hardness is achieved, up to 1500 Hv, with no distortion. This process is suitable for finished components.

We offer :
- HVOF robotised installations (High Velocity Oxy Fuel) for metal alloys and carbide deposits
- Plasma spraying equipment for ceramic and metal alloys deposits.

revetox

Revetox is a unique thermo-chemical process developed from a process patented by WCT.
Revetox is a very dense, very hard chromium oxide providing unequalled wear and corrosion resistance.
Maximum hardness : 2 000 HV
Applications include : compressor rods and sleeves, seal rings, pump pistons…

machining

Comprehensive machine shops include lathes, mills, grinders and lapping.
The shops are equipped with CNC and CAD/CAM equipment.
Single complex parts or large batches can be handled. Parts 7m long by Ø 1.2 m can be handled.

quality

Quality is carried out under ISO 9001 and many customers’ specific programs.
Equipement included in the temperature controlled facility includes CMM and associated equipment.
A fully equipped metallurgical laboratory provides metallography, hardness, bend and impact testing.
A dedicated dye penetrant shop meets the highest industry standards.

9 rue des Aulnettes BP N°30216 - 95106 ARGENTEUIL CEDEX France / Tel. +33 1 30 25 98 60 / Fax +33 1 39 82 88 89 / E-mail : contact@wallcolmonoy.fr - Siret 352 920 235 00012 - FR 91 352 920 235