Pre-treatmentsAn essential step for ensuring the complete success of a galvanic treatment is the painstaking selection of the most efficient preparations for removing superficial contaminants. In many cases the cause of unsuccessful electrolytic coating can be ascribed to errors committed during the initial washing and degreasing of the pieces.
1) Chemical degreasing operations
These allow for removing oils and pastes via simple dipping of the items. They may require the use of ultrasonic systems.
2) Electrolytic degreasing operations
These make it possible to remove oils and pastes with an electric potential.
3) Pickling and activation
Products formulated to remove the fine layers of oxides and slag by chemical or electrochemical means.
CopperThe products in the CultraMet line produce extremely glossy copper deposits with a sulphate acid electrolyte. The levelling power is excellent, likewise the penetration. The copper deposits obtained in this way are ductile and very brilliant, with low internal tension and a good resistance to corrosion. The process is economical due to the working temperature, and the versatility and simplicity in processing the effluents.
The products in the NiLuxMet series, which offer operators the best possible solution for their different production needs when aimed at improving gloss and levelling the treated surfaces, and when their primary objective is to improve resistance to corrosion and wear of the items.
The Nickel Satin process entails nickel-plating on a frame that produces uniformly opaque, decorative satin-finish deposits that come in a wide range of grades.
Nickel Satin produces anti-reflective surfaces with excellent resistance to abrasion and fingerprints. The deposit can subsequently be treated with other decorative finishes such as chrome, gold, silver, palladium, etc.
For years recognised as the most suitable coating for meeting the needs of the most demanding industries, Chemical Nickel (or electroless) is used mainly for obtaining uniform, non-porous deposits offering a high resistance to corrosion.
It is characterised by the uniformity of the deposit thickness regardless of the geometry of the items processed.
POPPlating on Plastic. The products in the PlastiMet range used in the Plating On Plastic processes are specially designed for the metalizing of plastic materials (ABS, ABS/PP and PP). This cycle makes it possible for the tone, gloss, and colour to completely transform the plastic surfaces, exalting the machined item that can take on numerous more complex shapes. Lastly, the metallic surface layer of the plastic can be enhanced with high-quality decorative aesthetics.
BronzeOver the years, VALMET's cutting-edge products have evolved in order to comply with the different regulations that first entailed the elimination of nickel from the surfaces of products intended for direct and prolonged contact with the skin, followed by the elimination of lead from inserts obtained with these processes.
The BroMet, Ice series with a white colour similar to silver, and Or in a yellow colour, are able to deposit perfectly glossy and bright ternary copper-tin-zinc alloys by means of electrodeposition on rack and barrel.
They can be used in the jewellery, watch-making, glasses-framing, fashion accessory and garment sectors, as well as in mechanical engineering, in the automotive and chemical industries and in the button and zip sectors.
Main performance features:
• High-speed, lead-free deposition;
• Exceptional uniformity of the alloy with a homogeneous deposit colour throughout the frame;
• Excellent thickness distribution;
• Brilliant white/yellow deposit;
• Hard deposit, resistant to wear and corrosion.