Powder Coating for Die Casting Parts supplier and manufacturer - China factory

Product Description

Powder Coating for Die Casting Parts

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1. Description of Powder Coating for Die Casting Parts

Powder coating for die casting parts is a solid powdery synthetic resin coating composed of solid resin, pigments, fillers and additives. Unlike ordinary solvent-based coatings and water-based coatings, the dispersion medium of Powder coating for die castin is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation and low energy consumption.

2. Curing Conditions of Powder Coating for Die Casting Parts

Standard curing:180℃ (workpiece temperature) for 15-20min
Low temperature curing: 160℃ (workpiece temperature) for 15min
Quick curing: 200℃ (workpiece temperature) for 3min

Pre-treatment: Different pre-treatment for different substrates (phosphating treatment, sandblasting treatment, shot peening treatment)
Spraying: Corona electrostatic spraying, if special spraying method is used, please inform in advance
Theoretical coverage: 8-10 square meters/kg film thickness of 60 microns varies according to type and color
Scope of application: indoor

Performance	Testing standard		Testing results
Burnish of 60 °		GB/T9754-88	1° to 95°+
Impact test	ISO6272	GB/T1723-1993	50cm/kg
Cup drawing test	ISO1520	GB/T9753-1988	8mm
adhesion	ISO2409	GB/T 9286-1998	Grade 0
Bending test	ISO1519	GB/T 6742-1986	2mm
Pencil hardness	ASTMD3363	GB/T 6739-1996	1H-2H
Salt spray test	ISO7253	GB/T 1771-1991	＞500h
Wet resistance	ISO6270	GB/T 1740-1979	＞1000h
Heat resistance	110℃/24h (White)		Excellent light retention,△E≤0.3-0.5
Note: 1. The above test is completed with 0.8 mm thick rust and oil removal cold rolled steel plate under experimental conditions, and the coating thickness is about 70μm;
2. The performance index of the above coating may be slightly reduced with the decrease of luster.

3. Technical Defects in Powder Coating for Die Casting Parts Spraying for Metal Castings

Among the metal workpieces coated with Powder coating for die casting parts, some materials such as castings (iron, aluminum), hot-rolled steel plates, galvanized, etc., have rough surfaces and have microscopic pores, which make the coating film prone to pores. The formation mechanism is that during the baking and solidification of the powder coating, the workpiece is in a closed state during melting and leveling, so that the melted and leveled coating film is arched, resulting in poor flatness of the coating film surface.

Powder coatings for heat sensitive substrates developed by Milestone Industrial Co. Ltd have been applied in many fields and are the best choice for paper, plastic, wood and furniture manufacturing.

4. Powder coating for die casting parts produced by Milestone Industrial Co. Ltd. solves this problem well. In order to achieve the best coating effect, the MST process is as follows

1) Before using Powder coating for die casting parts, pre-treat and pre-bake the workpiece;
2) Before spraying with Powder coating for die casting parts, use a sealant (or professional primer) for primer, and try to make the coated workpiece smooth and flat without micro-holes on the surface;
3) Surface spraying and baking are required to use Powder coating for die casting parts.