Pickling Fume Suppressant

I. Core Mechanism of Action

With "volatilization suppression, corrosion protection, bath stabilization" as core functions, it optimizes HDG pickling via three mechanisms:

Acid Fume Suppression via Molecular Film: Surfactants form a dense monomolecular film on acid surface, blocking HCl/SO₂ escape (no impact on pickling). Suppression rate ≥95%.

Corrosion Inhibition Against Over-Corrosion: Corrosion inhibitors form an adsorption film on workpiece surfaces, slowing acid corrosion (without hindering scale dissolution). Avoids hydrogen embrittlement/pitting; enhances subsequent zinc layer adhesion.

Bath Stabilization & Consumption Reduction: Molecular film minimizes acid volatilization/oxidation loss; corrosion inhibition reduces acid-workpiece side reactions. Prolongs bath life and reduces replacement frequency.

II. Core Product Advantages

Eco-Friendly & Improved Work Environment: Suppresses ≥95% acid fumes; cuts workshop HCl concentration. Optimizes working conditions without large purification equipment; protects operator health.

Corrosion Inhibition & Quality Boost: Ensures clean, uniform pickled surfaces (no over-corrosion/pitting/hydrogen embrittlement). Increases zinc layer adhesion by 10-15% and reduces HDG rework rate.

Energy & Cost Saving: Reduces acid volatilization and side reaction loss—prolongs bath life by 30-50% and cuts acid supplement by ≥25%. Slows equipment corrosion (pickling tanks/pipelines) and extends maintenance cycles.

Strong Adaptability & Easy Operation: Suitable for HCl, sulfuric acid, hydrofluoric acid (5-25% concentration; 25-60℃). No equipment modification—add 0.1-0.3% of acid weight directly (takes effect immediately; infrequent supplementary addition).

Green & Safe (No Secondary Pollution): Heavy metal/phosphorus/phenol-free. No pollutant decomposition during pickling; meets discharge standards after waste liquid treatment. No adverse impact on HDG processes or final product quality.

III. Application Scenarios & Usage Methods

1. Application Scenarios

Auto Parts HDG: Prevents over-corrosion/hydrogen embrittlement for precision parts (drive shafts, shock absorbers).

Hardware HDG: Reduces workshop acid fumes for batch parts (scaffold fasteners, door/window hardware).

Steel Structure HDG: Cuts acid consumption and equipment corrosion for large parts (bridge bearings, factory structures).

Standard Parts HDG: Improves surface quality and zinc adhesion for fasteners (bolts, nuts).

2. Usage Methods

Initial Addition: Add 0.2% of new acid solution weight; stir 5-10 minutes for uniform dispersion before use.

Supplementary Addition: Add 50% of initial amount after processing 5-8 tons of parts or 3-5 days of use. Add 0.2% of new acid weight when replenishing acid.

Precautions: Store sealed in cool, ventilated area (avoid sunlight). Wear rubber gloves; rinse skin with plenty of water if contacted.