Metal Surface Powder Spraying Production Line's typical front processing process is as follows:
(1) Pre -painting process of the coating of the water dispenser shellHot water washing (30s, 50-65 ° C) → Pre -dipper (60S, 50-65 ° C) → Skin (150s, 50-65 ° C) → Washing 1 (Direct Row) → Washing 1 [30s, room temperature (RT)] → → → → Washing 2 (30s, RT) → Fresh water direct injection → watch (30s, RT) → phosphorusization (150s, 50-60 ℃) → Washing 3 (30s, RT) → Washing 4 (30s, RT) → Fresh and pure Direct spray.
(2) Pre -processing process of air conditioner shell coating
Hot water washing (40S, 50-65 ° C) → Pre -dipper (80S, 50-65 ° C) → Skin (120S, 50-65 ° C) → Washing 1 (45S, RT) → Washing 2 (50s, RT) → Fresh Water Direct injection → Table (45S, RT) → Phosphorus (150s, 38 ~ 45 ℃) → Washing 3 (45S, RT) → Washing 4 (50s, RT) → Pure Wash (50s, RT) → Fresh Pure Water Straight Straight Straight Straight Straight Straight spray.
(3) A special pre -painting process
Disciplinary phosphorus (90s, 120 ~ 140 ℃) → Washing 1 (60s, 120 ~ 140 ℃) → Pure water spray (5s, RT) → Washed 2 (60s, RT) → Pure water spray (5s, RT)
