Antenna Spring

[koza19]

We are manufacturing a antenna spring made of music wire per astm a228. The customer is asking for a coating to be placed over the material. The spring will be used on a clock and will only be used in doors. Does any one have any ideas of a plating or coating to use? I have attached a drawing of the spring in question

Thanks in advance

 

[CoryPad]

Why does the customer want a coating? Corrosion resistance? Apearance? Other? That will have a large influence on the coating selection.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[koza19]

Appearence

 

[CoryPad]

If it can be a metallic coating, how about coated wire before spring making? Several suppliers provide zinc coated wire, and Bekaert makes Benzinal (Zn + Al) and Benzalplast (Zn + Al + PET plastic). Or, you could coat the finished springs with a coating like Magni 565 or one of the Doerken Delta series coatings. Colors are available with some of these also.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[TVP]

CoryPad provided some good options for coatings, especially for good corrosion resistance combined with appearance. A low-cost option that is not as attractive as conventional coatings but may be sufficient is Aqua TRC from JN Machinery/Toyo Ink. Talk to your spring vendor about what options they have in-house, outsource, etc.

http://www.jnmachinery.com/Aqua-TRCPaint.html

http://wwwsoc.nii.ac.jp/jssr/english/Proceeding/paper10.pdf

 

[sbozy25]

Just dip it in dykem and be done with it. That will be the cheapest option for you....

 

[koza19]

Thanks for the all help