Aluminum weak alkaline etchant alkaline etching before oxidation of alkaline etching before plating alkaline etching

Aluminum weak alkaline etchant 1. Process characteristics:? Removing the oxide film and the film surface to form a uniform layer of sand surface, it is conducive to the formation of good adhesion of the subsequent process. ? Etching rate uniform, will not cause local erosion for weak corrosive aluminum body. 2. The solution composition and operating conditions: open cylinder of raw materials and operating standards weak alkaline etchant amount ranging from aluminum 30-40 g / l 35 g / l temperature 40-50 degrees 40-50 degrees 20 seconds to 1 minute 15 seconds 3. Prepare a solution:? When open cylinder, with the solution in the tank by adding 2/3 of the water. ? Adding the required amount of weak caustic, stirring to dissolve. ? Water was added to the desired volume. The equipment needs project requirements? Tank PP, PVC or high density PE. ? Rack PP, PVC or 316 stainless steel. ? Moderate air agitation is not required, even cheer stirring. ? Circulating loop is not required. ? Add the system needs, feed pump made of PVC, PP or PE, can be resistant to alkali. ? Filtration system does not require a continuous loop filter. ? Ventilation requirements. ? Cooling system needs. 5. Environmental protection and safety? In order to avoid product of human and environmental hazards, access to product safety and environmental protection instructions manual is necessary. The company's product safety data sheet (MSDS) contains these instructions. 6. Warranty? I provide liability guarantees within the effective range of the law for the product quality. Product quality? Customers after repackaging the product is not within my company's warranty. ? In use, regardless of the user have any questions, our technical staff will be happy to answer. 7. Color and packaging of the product as a white solid, with plastic fiber bags. Packing is 25kg / pcs. Renchang chemical http://www.fsrchg.com Recruitment agency, the agency paid