Casting parts pretreatment process issues that need attention: casting parts, not all surfaces are machined, machined surfaces without leaving too thick oxide layer formed during casting, and some there are the sand in Jinan aluminum particles professional manufacturers, this time should be used to machining or sand blasting method to remove the oxide film on the original site, or by caustic after processing, the only way to both parts of the net addition to the original unprocessed oxide layer, and change can avoid machining tolerances of parts 1, working area is too large manufacturer specializing in the production of aluminum particles, operating over a large swing in the slot, with a touch of edge and center solution, updates exchange are very different, then the color of the oxide film produced inconsistent prevention approach: oxidation of the workpiece rotation downs small, you can quiet disposition, but when the solution temperature is too prone to map-like piebald, seem unnatural 2, aluminum coil coating layer is processed. When damaged part is cut, wearing a high-quality aluminum outer aluminum grain prices Shandong, inner layer is a hybrid aluminum, due to the difference between the larger, and therefore will have a "vitiligo" like spots after 3 oxidation process operating problems: alkaline etching workpiece disposal is not complete, the original part of the oxide film, the dirt can not divisible; disposal immediately after alkaline etching light on the surface is still alkaline; workpiece during the transfer contact foreign body aluminum particles, aluminum particles Jinan manufacturers, rolls of aluminum. Industry (certified merchants) provided by Jinan Heshun Aluminium Limited. Jinan Heshun Aluminum Co. (www.jnhsly.com) in the field of aluminum products devoted boundless enthusiasm and passion, rolls Alcoa has been customer-centric, for customers to create the concept of value, quality and service to win market share sincerely hope to cooperate with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Zhang.