Fengfan Brightener for SZ-30B Sulfate Zinc Plating
Properties 1. Stable performance, high current efficiency. 2. The plating is smooth, bright and leveling. 3. Suitable for continuous galvanizing, also suit for single workpiece, su
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natural trivalent chromium passivation and hexavalent chromium free passivate. Fengfan TR-393 is formulated as a for zinc-nickel alloy plating lines. It produces a tight, transparent natural-color layer as a, with long bath service life and simple line control.
Supplier-confirmed product and operating details for ordering and line setup.
| Product | Fengfan TR-393 Natural Color Passivate |
|---|---|
| Brand | FENGFAN |
| Model | TR-393 |
| Passivation type | Natural-color trivalent chromium passivate for zinc-nickel alloy |
| Place of Origin | China |
| Minimum Order Quantity | 25 kg |
| Packaging Details | Plastic barrel |
| Payment Terms | T/T, L/C |
| Parameter | Best Value | Working Range |
|---|---|---|
| TR-393 concentration | 70 ml/L | 50–100 ml/L |
| pH | 3.5 | 3.5–4.0 |
| Immersion time | 40 seconds | 30–60 seconds |
| Solution temperature | 30°C | 25–40°C |
Confirm the best operating set point with Fengfan when line conditions or part geometry change.
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Properties 1. Stable performance, high current efficiency. 2. The plating is smooth, bright and leveling. 3. Suitable for continuous galvanizing, also suit for single workpiece, su
View product
Ensure high-performance durability with our alkaline non-cyanide zinc plating solution. Optimized for bright alkaline zinc plating in rack and barrel systems.
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Delivers tough 25μm coatings with high impurity tolerance. Professional cyanide free alkaline zinc plating additives for rack and barrel industrial processes.
View producttr-393 is used after zinc-nickel alloy plating. it produces a transparent natural-color passivate layer on the plated part and protects the zinc-nickel deposit from corrosion.
yes. the tr-393 solution is a trivalent chromium passivate; it does not add hexavalent chromium to the passivation stage. rinsing after immersion removes residues before sealing or drying.
tr-393 leaves a natural color. the passivate layer is tight, uniform and transparent, so the zinc-nickel plated surface retains a clean natural appearance.
a working bath typically starts at 70 ml/l tr-393, ph 3.5, 40 seconds immersion and 30°c. the usable ranges are 50–100 ml/l, ph 3.5–4.0, 30–60 seconds and 25–40°c.
the recommended sequence is: zinc-nickel alloy plating, washing, gloss forming, washing, immersion in the tr-393 solution, washing, sealing and drying.
tr-393 is supplied by fengfan with a minimum order quantity of 25 kg and packaged in a plastic barrel. payment terms are t/t or l/c. contact the fengfan team for current pricing and availability.
