Aluminum die casting and aluminum alloy surface treatment surface treatment methods are summarized six, aluminum and aluminum alloy surface treatment methods (8) to maintain 20min, then rose to within 5min from 10V 50V radiator processing, heat sink processing, holding 5min LED light manufacturing, assembly, and then washed aluminum luggage rack factory, 700C and dried. Note: The free chromium oxide concentration should not exceed 30-35g / l. Aluminum die casting process and aluminum surface treatment method for surface treatment summary Fourth, the electrochemical surface treatment of aluminum and its alloys discussed strengthening the film forming process and mechanism. Technology research results show that neutral Na_2WO_4 mixed system, control 2.5 ~ 3.0g / l Dongguan router aluminum casing, machining, aluminum products provided by Cavey Cavey Aluminum Products Co., Ltd., Dongguan City, a film promoter concentration is. Dongguan router aluminum casing, machining, aluminum products Cavey Cavey Dongguan City Aluminum Products Co., Ltd. (kaiwei.bcvbc.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Mr Yip.