AUTHORISED DEALERS OF GROWEL CHEMICALS.
Mechanical zinc plating is accomplished by tumbling small parts in a drum with zinc and proprietary chemicals. Small iron and steel parts – usually limited in size to about 8-9 inches (200-300 mm) and weighing less than one pound (0.5 kg) – are cleaned and flash cOpper coated before loading into a plating barrel. The barrel is then loaded with proprietary chemicals, glass beads and zinc powder and tumbled. During tumbling, the glass beads peen zinc powder onto the part. Once finished, the parts are dried and packaged, or post-treated with a passivation film, dried, and packaged.
As mentioned, mechanical plating can only be applicable to small parts limited to the capacity of the drum. Furthermore, the materials must be simple in design to ensure peening to all surfaces. Mechanical zinc plating is most commonly used on high-strength fasteners and other small parts not suitable for hot-dip galvanizing.
BETTER IDEAS IN METAL FINISHING.
METACHEM CHEMICAL TRADING L.L.C.
PO.BOX : 3741 AJMAN | TEL : +971 6 7482750 | FAX : +971 6 7482751