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(A), use and performance
The special anti-corrosion coating for construction machinery is mainly used for various construction machinery, special engineering vehicles, heavy machinery, mining machinery, construction machinery and other vehicle primers, middle paints, various special top coats and supporting thinners. The paint is dry at room temperature, bright colors, hard and full coating film, good adhesion, strong acid resistance, color retention, gloss retention performance is very prominent, is one of the preferred coatings for all types of construction machinery.
(B) Main varieties of special anti-corrosion coatings for construction machinery (type I: single-component; type II: two-component)
The special anti-corrosion coating for construction machinery is mainly used for various construction machinery, special engineering vehicles, heavy machinery, mining machinery, construction machinery and other vehicle primers, middle paints, various special top coats and supporting thinners. The paint is dry at room temperature, bright colors, hard and full coating film, good adhesion, strong acid resistance, color retention, gloss retention performance is very prominent, is one of the preferred coatings for all types of construction machinery.
(B) Main varieties of special anti-corrosion coatings for construction machinery (type I: single-component; type II: two-component)
| Items | Explain | ||||||
| Variety | Primer | Intermediate paint | Topcoat | ||||
| colour | Iron red | Various colors (according to customer requirements) | Various colors (according to customer requirements) | ||||
| Light | no | 20-50% (according to customer requirements) | 50-80% (according to customer requirements) | ||||
| Drying time | Surface dry: 2 hours, hard work: 24 hours (25°C) | ||||||
| Hardness | ≥0.5 | ||||||
| Impact strength | 50kg·cm | ||||||
| Flexibility | 1mm | ||||||
| Attached | Level 1 | ||||||
| Salt water resistance | ≥48h (5% NaCl solution) | ||||||
| Storage period | 1 year | ||||||
| Matching ratio | Type I: single component; type II: Part A: Part B = 4:1 | ||||||
| Dilute agent | Special thinner | ||||||
| Theoretical use | 90-180 g/m2 (25-40 micron) | ||||||
| Mature period | Type I: Unlimited; Type II: 20 minutes | ||||||
| Applicable period | Type I: Unlimited; Type II: 4-8 hours | ||||||
| Painting method | High pressure airless spray | Air spray | Hand brushing, roller coating | ||||
| Spray hole | 0.4-0.5mm | 2.0-2.5mm | no | ||||
| Spray pressure | 15-20Mpa | 0.3-0.4Mpa | no | ||||
| Tool cleaning | Special cleaning agent | ||||||
| Painting interval | temperature（℃） | 0 | 15 | 25 | |||
| Shortest（h） | 24 | 12 | 8 | ||||
| longest（h） | 72 | 48 | 36 | ||||
| Surface treatment | Before the construction, the surface to be coated must be strictly treated so that the surface is free of rust, oil, and sandblasting on the surface of the steel material. Sa2.5 in accordance with the Standards for Corrosion Levels and Derusting of the Steel Surface before Painting. Use manual mechanical derusting to achieve St3. Welds on the surface of the steel should be free of welds, horns, smooth, burrs. The rust-removed steel surface should be coated with a primer within 24 hours in order to avoid secondary rust. | ||||||
| Construction Conditions | The best construction conditions for the coating are temperature 0-35°C, relative humidity ≤85%, substrate temperature 3°C above the dew point, and no construction under conditions of rain, fog, snow, and large dust. | ||||||
| Package specifications | Type I: 20kg/barrel; Type II: 25kg/pack | ||||||