FK-8008 is a cathodic acrylic electrophoretic coating supplied as a concentrated, water-based lacquer. It is built for finishing lines that want a protective, decorative film on metal parts without the oven temperatures a conventional acrylic system demands, and it suits platers, job coaters and hardware makers who already run a cathodic tank and want to add colour and gloss without rebuilding the oven section.
We make it from imported raw materials on a patented process and supply it as a concentrate, diluted on site to the working solids used in the tank. The formulation is acrylic, water-borne and cathodic, which is what allows it to be run on a standard cathodic line and cured in a low-temperature oven.
The parts that are well-suited to it already carry a plated or polished surface: aluminium components, nickel-plated fittings, precious-metal ornaments, locks, lamp and clock parts, glasses frames, lighter fittings and furniture hardware. It is a topcoat, not a pretreatment, so everything it does depends on a clean, fully rinsed substrate underneath.
| Property | Value | Test method |
|---|---|---|
| Appearance | Light yellow or brownish red transparent viscous liquid | Visual inspection |
| Solid content | 58 ± 2% | GB/T 6751 |
| pH (25 °C) | 5.0 ± 0.5 | pH meter |
| Conductivity | 600 ± 300 µS/cm | HG/T 3335 |
| Working bath solid content | 10–12% | GB/T 6751 |
| Working bath pH (25 °C) | 4.5–5.5 | pH meter |
| Working bath conductivity (25 °C) | 600 ± 300 µS/cm | Conductivity meter |
| Solvent content | 2–4% | Chromatograph |
| Bath temperature | 24–28 °C | Thermometer |
| Baking conditions | 110–120 °C for 30–40 minutes | — |
The base is supplied clear, and colour is added at the bath with colour pastes. Both water-based and oily pastes can be used, so one water based electrophoretic coating can serve a clear finish on one tank and a matched shade on another without changing the base lacquer. Paste dosage sets the depth of colour; send us the target shade and we will confirm the paste and the addition range to work with.
On the part the film reads as glass-clear where it is unpigmented and deep where it is coloured. High transparency and fullness give a three-dimensional effect that flat lacquers lose, especially over polished or bright-plated surfaces, and the film sits flat and smooth rather than pooling at edges and holes.
Expect the coating to emphasise what is underneath rather than hide it. Where a part carries polished faces next to as-machined areas, the difference stays visible through the film — usually what a decorative part wants, but worth agreeing with your customer before the run.
Shade consistency between runs comes from keeping paste addition and bath parameters on the same footing. That discipline is what allows parts from different production batches to be assembled together without a visible mismatch.
Changeover is where coating projects usually stall, so plan it before the first drum arrives. Check the tank, the circulation loop and the rinse stages for residue from the previous coating, strip and re-rack the contact points, and confirm the rectifier holds a steady voltage across the rack you intend to run. A tank that has held a different chemistry needs a thorough clean before this electrophoretic lacquer goes in — residue in a corner shows up as a defect on the first batch.
Look at the whole line rather than the tank alone: the cure oven has to hold the low bake window with a real load inside it, the paste you intend to use has to match the shade standard, and the rinses after deposition need enough clean water to carry drag-out away. Where those pieces are already in place, a switch is mostly a matter of bath make-up and a trial run. As with any of the coating chemicals we supply, we would rather see a trial on your own parts before a full tank is committed.
If the part currently carries a painted or powder-coated film, that layer normally has to come off first; the lacquer bonds to metal, and a previous organic coating underneath it becomes a weak point rather than a base.
Choosing the right match is where most sourcing decisions stall. As a trading supplier, we keep one point of contact from first enquiry to after-sales: tell us what you are making and the conditions you work under, and we shortlist the closest matches from our supplier network, compare specifications and arrange samples before you commit to a bulk order. If something does not behave as expected, we work with the supplying partner on the cause and a practical fix, and stay with the case until it is settled. Email, WeChat or WhatsApp enquiries get a reply within 24 hours.
Metal parts. Aluminium and aluminium alloys are the most common substrate, followed by plated steel and zinc parts — including surfaces finished on an electroless nickel line — and precious-metal pieces. The film bonds to a clean metal surface, so the deciding factor is pretreatment rather than the metal itself. Castings and mixed alloys deserve a trial first, because surface porosity varies from lot to lot and shows through a transparent film.
Yes. The base is supplied clear and colour is built in at the bath with colour pastes; both water-based and oily pastes work, which lets one line run a shade for furniture hardware and another for ornaments. Send us the target shade or a physical standard and we will confirm the paste and the dosage range. Approve a coated panel before the production run, because a water based electrophoretic coating reads slightly differently over polished and satin substrates.
The film cures in a low-temperature bake instead of the 140–150 °C window many cathodic acrylic coating baths need. A lower oven set point cuts the energy used to bring oven and load up to temperature and reduces the heat lost through the oven walls on every cycle, and the shorter ramp means less oven time for the same load. The size of the saving depends on your oven, your load density and how often you run, so treat it as a line-by-line calculation rather than a fixed percentage.
The cured film is there to reduce maintenance, not add to it. Wipe with a soft cloth and a mild, non-abrasive detergent, then rinse and dry. Avoid scouring pads, abrasive polishes and strong solvents, which dull the gloss and can cut through the film at edges. Parts that are handled constantly — locks, lighter fittings, watch casings — are better wiped than polished, since the film's fingerprint resistance does most of the work.
Because you are buying a concentrate, not a ready-to-run bath. The drum holds the electrophoretic coating at full strength; on site it is cut with deionised water to the solids that give the film its build, and the bath is then set for pH, conductivity, temperature and solvent content before production. The dilution is normal make-up rather than a sign of a weak product — but it is also the step where most bath faults begin, so measure dilution and water quality instead of estimating them.
Film build is governed by the working bath solids, the deposition voltage and the geometry of the part, so there is no single figure that holds for every job. What we can do is confirm the parameters that control it and issue the technical data for the batch you receive. Measure the film on a coated panel from your own line before setting a specification; ask your sales contact for the technical data sheet and the batch certificate for the lot delivered.
