Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of silica sol for silicon steel sheet in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable silica sol for silicon steel sheet for sale here from our factory.
Silica Sol for Silicon Steel Sheet Coating Trials
| Model | Particle Size | SiO₂ Content | Na₂O Content | pH | Shelf Life |
|---|---|---|---|---|---|
| HA2005 | 7–10 nm | 20±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3010 | 10–15 nm | 30±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3510 | 10–15 nm | 35±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3020 | 20–30 nm | 30±1% | ≤0.2% | 2–4 | ≥12 months |
These acidic HA grades are formulation candidates rather than finished silicon-steel coatings. Qualification must use the actual phosphate or hybrid binder, steel grade, coating line and heat-treatment conditions.
Match Particle Size and Solids to the Insulation Coating
Silicon steel sheet coatings combine chemistry, film formation and high-temperature processing. The selected silica sol must remain stable in the complete bath and meet electrical, adhesion and surface requirements after curing or annealing.
HA2005 Fine-Particle Candidate
Provides 20±1% SiO₂ with the finest listed acidic particle range for lower-solids formulation trials.
HA3010 Standard-Solids Candidate
Combines 10–15 nm particles with a 30±1% silica concentration for controlled coating development.
HA3510 Higher-Solids Candidate
Shares the 10–15 nm particle range while providing a higher supplied-solids option for formulation comparison.
HA3020 Larger-Particle Candidate
Provides a different surface-area and packing direction at 30±1% SiO₂ for comparative coating trials.
Information Needed for Silicon Steel Sheet Evaluation
- Steel substrate: identify grain-oriented or non-oriented steel, grade, thickness, surface condition and pretreatment.
- Coating chemistry: list phosphate or other inorganic binder, organic resin, pigments, fillers, additives and process water.
- Bath conditions: provide pH, solids, viscosity, conductivity, mixing order, aging time and filtration requirements.
- Application process: specify roll, dip or laboratory coating, wet film, target dry coat weight and line speed.
- Thermal schedule: provide drying, curing, annealing or stress-relief temperatures, residence time and atmosphere.
- Acceptance criteria: define insulation resistance, adhesion, flexibility, surface appearance, corrosion and weldability tests.
Test the Bath, Film and Coated Steel
Bath Stability
Check viscosity, pH drift, precipitation, gelation and storage stability with all acids, salts, resin and additives present.
Application Behavior
Evaluate wetting, leveling, foam, pickup, edge buildup and coating-weight consistency on the intended steel surface.
Thermal Processing
Confirm film integrity, appearance, adhesion and dimensional response after the actual drying, curing or annealing schedule.
Electrical and Mechanical Tests
Measure insulation resistance, stacking performance, adhesion, bend response and other customer-specific requirements.
Request a Silicon Steel Sheet Coating Grade
Send the steel grade, coating chemistry, bath conditions, application process, thermal schedule and acceptance criteria.
Request a Coating Trial GradeProtect Acidic Silica-Sol Stability
Packaging Options
Available polyethylene packaging sizes are 25 kg, 250 kg and 1000 kg.
Storage Temperature
Store at 0–40°C and prevent freezing. Freezing can cause irreversible gelation.
Process Contamination
Use compatible transfer equipment and avoid uncontrolled salts, alkaline residues or foreign particles.
Container Closure
Keep containers closed to reduce evaporation, contamination and precipitation of silica particles.
Silica Sol for Silicon Steel Sheet FAQ
Which silica-sol grades can be evaluated for silicon steel sheet coatings?
HA2005, HA3010, HA3510 and HA3020 are acidic candidates covering 7–30 nm particles and 20–35% SiO₂.
Are the HA grades finished insulation coatings?
No. They are silica-sol raw-material candidates for coating formulation trials and must be combined with the customer's binder and additive system.
Does matching the acidic pH guarantee bath stability?
No. Phosphates, metal ions, resin, pigments, process water and mixing order can all affect stability, so the complete bath must be tested.
Which coated-sheet properties should be validated?
Validate insulation resistance, coating weight, adhesion, flexibility, surface appearance, corrosion behavior and application-specific thermal performance.
How should acidic silica sol be stored?
Store it at 0–40°C, prevent freezing and prolonged sunlight, and keep the package securely closed.
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Applications of Silica Sol for Silicon Steel Sheet
Acidic silica-sol grades can be evaluated as inorganic components in compatible electrical-steel coating formulations. Qualification requires the actual steel, binder system, coating line and thermal process.
Grain-Oriented Silicon Steel
Candidate grades can be screened in compatible insulation-coating formulations under the required annealing and electrical tests.
Non-Oriented Electrical Steel
Trials can assess bath stability, coating weight, adhesion and insulation performance on the intended steel grade.
Phosphate-Based Coatings
Acidic silica sol may be evaluated after compatibility with phosphates, metal ions, resin and additives is confirmed.
Chromate-Free Coating Development
Selected grades can support formulation trials where alternative inorganic or hybrid binder systems are under evaluation.
Stress-Relief Annealing Coatings
Coated-sheet trials should verify adhesion, film integrity and insulation properties after the specified thermal cycle.
Custom Electrical Steel Coatings
Particle size and supplied solids can be compared against customer-defined bath, line and coated-sheet requirements.
