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Activation for zinc diecast before plating brass/copper

Which are the acids and its concentrations in activation for parts made with zinc diecast (zamac) before plating with brass/copper?

Diogo Cavalcanti
home hardware - Caxias do Sul, RS, Brazil
2003

2003

astmb633.htmlb252.html" -->-92(1998) 'Standard Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings' gives details on all of the steps necessary. www.astm.org

Ken Vlach [deceased]
- Goleta, California

Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.
Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.

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