Lead alloy aluminum oxide film different models of different aluminum alloys of different models, the conductivity after chemical conversion treatment, due to differences in the appearance of the color of the film than the difference between the different oxidation process recipe received other more obvious. High purity aluminum alloy aluminum, film speed is slow; low purity aluminum alloy aluminum hot rolling of aluminum, on the contrary. Therefore, depending on the need to master the different aluminum alloy oxidation. To do this, the different types of aluminum alloy banding not allowed in the same bunch as they may therefore not be appropriate to control their oxidation time. Pros and cons of aluminum alloy components can be distinguished when alkaline etching Jinan supply hot-rolled aluminum dealers, such as alkali corrosion workpiece surface there are too many gray-black film, or a red film, it must be compared with silicon or copper High aluminum, this aluminum chemical conversion film to shorten the time in relation to the supply of hot-rolled aluminum Jinan, otherwise obtained conductive film is bound to be difficult to meet the requirements. How to buy high-quality aluminum patterns? Look materials. Quality pattern aluminum used in aluminum, thickness, strength and oxide film, the rules should be consistent with the relevant norms of the country, should be 1.2 mm wall thickness, tensile strength reach 157 Newton per square millimeter sell hot-rolled aluminum manufacturers, succumb strength to reach 108 Newtons per square millimeter, the thickness of the oxide film should reach 10 microns. If not meet the above specification, which is defective aluminum doors and windows, no use. Supply of hot-rolled aluminum manufacturer Alcoa _ cis (certified) _ Hot-rolled aluminum sheet provided by the Aluminum Co. of Jinan rolls. Jinan Heshun Aluminum Co. (www.jnhsly.com) Shandong Jinan, aluminum products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Aluminum leadership in cis with the staff warmly welcome all inquiries negotiations to create a better future for aluminum rolls.