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
View productnatural 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
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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.
