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APPLICATION GUIDE

Hướng dẫn thi công Ws Water Silicate

Product Code: KS-WS-WATPhiên bản: V1.0Date: 2026-06-17Page: 1/2

1. Chuẩn bị trước khi thi công

1Kiểm tra và xử lý bề mặt nền

Check substrate surface cleanliness, roughness, temperature and humidity conditions. Steel blast-cleaned to Sa2.5 grade (ISO 8501-1), surface roughness Rz 40-75μm. Complete primer application within 4h after treatment. Substrate temperature ≥ dew point +3°C, relative humidity ≤85%.

2Chuẩn bị sơn

Accurately weigh the main agent and curing agent according to the ratio for one-component or two-component (as per product label). Stir with an electric stirrer at low speed (300-500rpm) for 3-5 minutes until uniform. Add 0-10% dedicated thinner as needed to adjust application viscosity. Use after an induction period of 15-30 minutes (23°C).

3Xác nhận điều kiện môi trường

Application temperature: 5-40°C (substrate temperature ≥ dew point +3°C). Relative humidity: ≤85%. The application area should be well ventilated. For outdoor application, avoid rain, snow, strong wind, and direct sunlight.

2. Quy trình thi công

Phương pháp thi côngParameterTình huống áp dụng
Phun không khíNozzle 0.38-0.53mm, pressure 15-25MPaKết cấu thép diện lớn, bể chứa, tàu biển
Phun dùng khí nénNozzle 1.5-2.0mm, pressure 0.3-0.5MPaChi tiết gia công nhỏ/vừa, vỏ thiết bị
Quét cọ / con lăn—Sửa chữa diện tích nhỏ, sơn pre-stripe mối hàn, gia cố góc cạnh

Độ dày màng khô khuyến nghị (DFT):30-60μm/coat. Multiple coats may be required to achieve specified film thickness. Minimum recoat interval must be met between coats (see TDS Drying Time table).

III. Lưu ý khi thi công

1. If maximum recoat interval is exceeded, sweep blast the surface (low pressure 0.2-0.3MPa, non-metallic abrasive) to create mechanical anchoring profile.

2. Welds, free edges, bolt holes, etc. should be stripe coated first to ensure coating thickness at these weak points meets specifications.

3. Continuously stir the coating during application to prevent pigment settling (especially for products containing heavy pigments such as zinc powder/mica iron oxide/glass flakes).

4. Two-component coatings must not be used after exceeding the pot life (4-8 hours @23°C)—cross-linking reaction has occurred, and continued use will result in loss of adhesion and coating chalking.

5. Low temperature (<5°C)Application时Curing Agent反应活性显著Reduces,需Sử dụngđóng rắn ở nhiệt độ thấp剂或采取加热措施。

6. Avoid contact with water during coating curing after application (epoxy resin is not water-resistant; amine curing agents react with water to produce amine blush/white spots).

IV. An toàn và môi trường

1. Applicator must wear protective equipment: gas mask (A2P2 filter cartridge), goggles, nitrile gloves, anti-static workwear.

2. Open flames, welding, cutting, and other operations that generate sparks/high temperatures are prohibited in the construction area. Use explosion-proof electrical equipment.

3. Dispose of waste paint and containers in accordance with Category HW12 of the National Hazardous Waste List.

4. Residual paint must not be poured into sewers or soil. Collect and hand over to a qualified hazardous waste disposal unit for treatment.

V. Kiểm tra chất lượng

Hạng mục kiểm traPhương phápTiêu chí nghiệm thu
Xử lý bề mặtISO 8503 Surface Roughness ComparatorSa2.5, Rz 40-75μm
Dry Film Thickness (DFT)Phương pháp cảm ứng điện từ ISO 280880% điểm đo ≥ giá trị quy định, không có điểm đo<80%规定值
Độ bám dínhISO 4624 Phương pháp kéo đứt / ISO 2409 Phương pháp rạch ô≥≥3-5 MPa
Lỗ đinh/khuyết tật màng sơnKiểm tra tia lửa cao thếKhông lỗ đinh/khuyết tật màng sơn
Application Guide preparation basis: HG/T / GB / ISO related standards | ISO 12944-7/8 | SSPC PA1 | Actual Application Parameters should be adjusted according to on-site conditions. If you have any questions, please contact the KeXin Technical Department at 0757-88793275

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