Powder Coating Method for Spring with non-Zinc Contained Undercoat Paint

摘要

The present invention is a cleaning process for removing foreign substances from the surface of the manufactured spring, a manual drying process for drying the cleaning liquid remaining on the spring surface during the cleaning process, a spring surface preheating process, a spring undercoating process for forming a primary coating surface on the spring surface, In the spring painting process, which consists of the spring top coat painting process, which forms the second coat surface on the primary painting surface, and the painting drying process in which the bottom coat and top coat paint are cured and dried, the paint used for the bottom coat is 55-65 weight of epoxy resin. %, hardener 15~20% by weight, filler 15~20% by weight, additive 1.0% by weight or less, pigment 1.0% by weight or less to form a dense resin component, thereby improving the rust prevention performance of the spring without containing zinc. It relates to a spring powder coating method using a non-conducting primer coating that can be made.