Fengfan Alkaline Zinc Nickel Alloy Process Zinc Nickel Alloy Plating Process Eco Zinie 300

Product Overview

Eco Zinie 300 is an alkaline zinc-nickel alloy process for plating shops working to automotive corrosion specifications. The chemistry is alkaline rather than acidic, formulated to be environment-friendly, and developed around the requirements European and American vehicle makers place on zinc-nickel coatings, so the starting point is already the finish the specification is asking for. In daily use it behaves like a conventional alkaline line: the bath is made up, analysed on a routine cycle and topped up from four liquid additions, then the parts take a bright dip, a passivation and a seal. That makes it a practical route for a shop moving a part from a plain zinc specification to an alloy one, or for replacing an alloy bath that has become difficult to hold in balance. Shops that treat zinc nickel plating as a controlled process rather than a dip will find the behaviour predictable from the first load, and the sensible next step is a trial on your own parts and your own water rather than a comparison of data sheets.

Bath Composition & Operating Window

Alkaline System Compatibility

The bath is built on alkaline chemistry, and that choice is what makes the output repeatable. Alkaline systems tolerate the swings that come with real production — drag-in from the earlier stages, the differences between operators, the change from rack work to barrel work — and hold their balance through a shift without constant correction. Chemistry that sits stable is chemistry that plates stable, so what comes off the line in the afternoon matches what came off in the morning. It also plates evenly across different substrate surfaces, so a mixed load comes out with the same alloy on every part rather than a scatter that has to be sorted afterwards. For an industrial metal plating process where alkaline chemistry is already the house standard, this is the practical advantage: the process is compatible with existing alkaline baths and goes into a running line without the chemistry being rebuilt around it.

Deposit Characteristics

• 11–16% nickel in the layer — the composition automotive specifications are written around; nickel content is what separates an alloy coating from a plain zinc coating in corrosion terms.
• White and bright out of the bath — a clean, even colour that gives the bright dip and the passivation step a consistent base to work from.
• Ductility for formed parts — the zinc-nickel plating layer bends with the workpiece instead of cracking, so fasteners, clips and stamped parts survive post-plate handling and assembly.
• Corrosion and thermal-shock resistance — the alloy is what carries the corrosion performance, and it holds that performance through thermal cycling once the layer has been passivated and sealed.
• Efficient current distribution — in electro nickel plating applications the process keeps current distribution efficient, which is where alloy accuracy under continuous running comes from.
• Controlled metal transfer — plating thickness stays consistent across the load, so dimensional checks downstream do not throw up outliers.

Process Flow & Control Points

1. Alkaline chemical degreasing — strip oils and shop soils; this is the first stage of the metal plating process and the one that decides whether the alloy bonds.
2. Rinse — carry-over into the next tank is what causes most adhesion faults.
3. Acid degreasing — removes the film that alkaline degreasing leaves behind.
4. Rinse and activate — a clean, active surface immediately before plating.
5. Rinse — keep the activation drag-out low so the alloy bath stays in balance.
6. Zinc-nickel alloy plating — the alloy layer forms here; hold the bath inside the operating window and keep the filtration loop running.
7. Rinse — plenty of clean water before the bright dip.
8. Bright dip — dilute hydrochloric acid at pH 3.5–4.0; this is the step that lifts the white colour before passivation.
9. Rinse, then passivate — forms the conversion layer that carries the corrosion result.
10. Rinse, seal and dry-cure — the final seal and cure lock in the corrosion and thermal-shock performance the job is specified against.

Product Advantages

• Written around automotive corrosion targets — the process exists because plain zinc no longer clears vehicle specifications; the alloy is the answer and the bath is tuned for that job.
• Coverage where the part is awkward — good dispersion and homogeneous plating ability mean recesses, threads and shielded faces get their share, so a metal plating service is not sorting rejects after the barrel.
• One chemistry for rack and barrel — the same additions serve both formats with different set points, which keeps one bath recipe and one maintenance routine on the floor.
• Tolerance across the current-density band — mixed surface areas in a single load plate without re-racking for a different current.
• Easier to qualify — the alloy, the bright dip and the passivation are designed to work together, which shortens the road to a repeatable salt-spray result you can put in front of an automotive customer.

Additive System Design

Four additions do the work: MU, the A complex agent, the B brightener and the C nickel supplement. Splitting them is deliberate. The complex agent governs how zinc and nickel deposit together, the brightener looks after appearance, and the nickel supplement holds the alloy ratio as the bath is worked, so a correction in one area does not drag the others with it. In practice a drifting analysis is fixed at its cause — brightness problems are answered with brightener, alloy problems with the nickel supplement — instead of a blanket addition that overshoots somewhere else. For a zinc nickel plating company running several part numbers, that separation is what makes the bath controllable rather than something you chase. All four are liquids and go in on the same analysis cycle as the zinc metal and caustic, and the set works with the standard cleaning and passivation stages already on the line.

Operational Usability

• Dosing on a routine cycle — concentrations are checked and topped up the way an electro nickel plating bath is checked: sample, titrate, add, log; nothing exotic sits outside the analysis sheet.
• Tolerant of normal fluctuation — the zinc-nickel plating bath absorbs small swings in current density and temperature without throwing the deposit, which is what keeps a shift running when a rectifier is adjusted mid-load.
• Longer bath life — the bath is built to run for extended cycles between treatments, cutting chemical consumption and the downtime that goes with a rebuild.
• Small corrections rather than large ones — because the additions are separate, a correction is targeted and quick instead of a reactive overdose.
• Repeatable set-up — once the band is set for a part, the same numbers reproduce on the next run without re-tuning.

Line Integration

The process is built to slot into a line rather than replace it. It runs under automatic control and on manually operated tanks with the same set points and the same analysis routine; what changes is who opens the valve. The rectifier, tank, filtration loop and rinse train stay as they are, so bringing the process in is a chemistry decision rather than a capital project. That matters on industrial metal plating work where the line is booked weeks ahead and a shutdown window is the only room for change. The quieter benefit is standardisation: one chemistry and one maintenance routine across shifts means results stop depending on who was on the floor. A shop that already runs electro nickel plating will recognise the rhythm — analyse, top up, log, repeat — applied here to an alloy bath instead of a single-metal one.

High-Volume Line Production

• Long campaigns hold their alloy — a zinc nickel plating line running the same part for days keeps its alloy ratio from the first barrel to the last, so the end of the campaign does not need re-qualifying.
• Monitoring instead of correcting — because the bath resists drift, the operator's shift becomes about readings and top-ups rather than chasing a problem mid-run.
• Uniform thickness across the run — deposition stays consistent over the campaign, which protects dimensional tolerances on high-volume parts.
• Barrel and rack in the same week — fasteners and small fittings by barrel, larger components on racks, and a metal plating service that quotes both without keeping a second alloy bath.
• Restarts without a re-balance — the pauses and restarts of a three-shift operation do not leave the bath out of condition at the start of the next shift.

Precision & Specialized Finishing

Not every line runs thousands of identical parts. Job shops and specialist finishers take work in small batches, on mixed substrates and to specifications written around a drawing rather than a standard. That is where this process earns its place: it delivers a reliable alloy from a bath that stays chemically stable between short runs, so a shop can tailor the finish — the colour after passivation, the layer thickness, the seal on top — without disturbing the general process conditions on the line next door. Small precision components plate without losing alloy integrity, and mixed loads of different substrate materials come through with the same composition. For a zinc nickel plating company whose value is in taking on the awkward jobs, the chemistry has to be predictable when the part count is low and the specification is high; that is the case this process is built for.

Conversion & Deployment Flexibility

• A route off a less stable formulation — where a metal plating process is being moved onto something more controllable and more environmentally sound, the surrounding stages stay in place and the change is confined to the plating step.
• A zinc-nickel plating bath that behaves — the point of the switch is a bath that holds its balance between analyses, so the first weeks are about confirming set points rather than fighting the chemistry.
• No adaptation delay — the additions are liquids dosed on a normal cycle, so the team does not need a retraining programme before the first production load.
• Throughput holds — the plating step changes; the cycle time around it does not.
• A documented starting point — fixed make-up values give the first trial a baseline to measure against, so the decision is made on readings rather than impressions.

Ordering & Delivery

• Payment — 100% T/T in advance.
• Minimum order quantity — varies by chemical; confirmed with our sales team per order.
• Lead time — 2 weeks.
• Packing — 10 kg/box; 25 kg or 50 kg/bag; 20 kg/25 kg/30 kg/200 kg/drum; 1000 kg/IBC drum.
• Shipping — per the terms agreed in the current contract.
• Documentation — an inspection certificate is issued after delivery stating the batch number and warranty period.
• Trial quantities — ask your sales contact about a trial quantity and the current terms for this product.
• Before you commit — confirm the passivator grade you intend to pair with the alloy layer, so the corrosion result is measured against the right post-treatment.

Use Scenarios

Where this piece is going to live matters as much as how it looks on the product. In a home setting it can anchor a living room, bedroom or entryway, while in a commercial or hospitality project the same design carries a different weight against heavier traffic and a stricter standard of finish. Tell us how you plan to use it — indoors or out, a single unit or a matching run across several rooms — and we will walk you through the sizes, materials and finishes that suit that setting. If your project carries specific requirements around placement, load or installation conditions, share them before you order so the details can be checked against what you have in mind.

Technical Support & Model Matching

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.

FAQ