Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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POWDER COATING ON ZINC COMPONENT
Dear Sir,
Can you guide us in powder coating on zinc pressure diecast component- 1)what type of powder should be used for powder coating
2) what temperature it should be baked and what type of processing of pretreatment should be carried out.
regards
- Coimbatore
2006
Zinc phosphatizing is probably the most appropriate pretreatment, but the temperature depends on the type of powder, and the type of powder depends on the application more than the substrate. Indoors, outdoors, exposed to sunlight? Hardness and scratch resistance required? Range of colors?
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006
2007
Dear sir,
Regarding the Powder Coating On Zinc Mazak Component,we are using Grey Color powder of Epoxy Polyster,Exposed to Outdoor Sunlight,Powder Coating Test for adhesion is by Scratch Test using Tape.
with regards,
Precicraft Components India Pvt Ltd - Coimbatore, India
Dear Mr,SriRam
Pl don't use epoxy-polyester(hybrid) powder coating for outdoor/ in direct sunlight because hybrid powder coatings are not suitable for outdoor(chemistry part of resins/pigments and additives will be responsible for UV protection).you can use polyester-TGIC or TGIC free powder for outdoor.
thanks and regards,
- Gurgaon, India
Dear MrJagmal Singh,
thanks for your information.
- Coimbatore
2007
adv.
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