Rebar powder Coating
Introduction
Accurate selection of powder has always been a problem for the powder industry. To solve this problem, we name the powder according to the industry’s requirements for powder coatings. We select materials for different industries and make corresponding adjustments to the process to better match the industry’s requirements. We provide customers with high-quality and low-cost products that are easy to use.
| Product name |
Rebar powder |
| Applicable industries |
Steel strand, rebar |
| Powder specific gravity |
1.2-1.5ɡ/cm³ |
| Product features |
- High hardness, good adhesion.
- Chemical resistance, good corrosion resistance.
|
| Physical properties |
Bending |
ASTM D522 |
Passed-curvature diameter is 5mm. |
| GB/T1731 |
Passed-curvature diameter is 2mm. |
| Dry adhesion |
ASTM D3359 |
Passed-result is 5B. |
| ISO 2409 |
Passed-result is 0 grade. |
| GB/T9286 |
Passed-result is 0 grade. |
| Cupping |
ISO 1520 |
Passed 5mm-No cracking or shedding of coating. |
| GB/T9753 |
Passed 5mm-No cracking or shedding of coating. |
| Impact resistance (positive impact) |
ASTM D2794 |
≥50kg.cm |
| GB/T9753 |
50kg.cm |
| Pencil hardness (scratch hardness) |
ASTM D3363 |
≥2H |
| GB/T6739 |
≥2H |
| Storage stability |
12 months (less than 30℃ environment). Re-test after expiration. If it meets the requirements, it can be used at will. |
| Curing process |
200℃/12min, 180℃/15min (workpiece surface temperature). |
| Pretreatment |
All metal substrates need to be degreased and degreased, iron metals are treated with zinc or iron phosphating and aluminum chromium to improve corrosion resistance. |
| Coating |
- Manual or automatic spraying equipment can be used. To ensure the consistency of the coating, automatic spraying equipment is recommended.
- Unsprayed powder can be recycled through an appropriate recycling system.
- Atomizing air pressure ∽0.5 bar, primary air ∽0.5 bar, spraying voltage 40-90kv.
|
| Damage repair |
Surface treatment: Grinding + air cleaning.
Application: Recoating mode,reduce spraying voltage.
|
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