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After electroplating other metal on the surface of aluminium and aluminium extrusion , it can significantly improve the surface physical or chemical properties, for example, electroplated silver on the surface can improve the electrical conductibility; electroplated copper, nickel or tin on the surface, it's to make aluminium alloy easy to weld; electroplated chromium is to improve wear resistance; In the decorative aspect, actually mostly adopted electroplating chromium. Aluminium and aluminium alloy surface electroplating have long been tried and used in actual production. The factors that oxidizing material existing between aluminium alloy and electroplated layer, the difference thermal expansivity between aluminium alloy and metal plating, pinhole and residual electroplating solution in electroplated layer etc.caused badly coating adhesion. Long time using will flake peeling off immediately after plating, even in the field of surface treatment, aluminium and aluminium a

https://haluminium.com/ Homogenizing Treatment In Alloy 6063, the dissolving temperature of Mg2Si is 520 ℃, and Al-Mg-Si three-phase eutectic temperature is 595 ℃, the actual burning temperature is lower than 595 ℃, so homogenization should be treated between 520-595 ℃. After homogenization, the following changes occurred in Alloy 6063 structure: 1), Coring Segregation disappeared. 2), Mg2Si is dissolved in α (Al12Fe3Si2), and unbalance eutectic disappeared. 3), The acicular β(Al9Fe2Si2) is transformed into a spherical α (Al12Fe3Si2), and the iron-containing phase particles are refined. Through the above changes, the extrusion performance and aluminium profile quality will be greatly improved: The disappearance of coring segregation will reduce the inhomogeneity of metal flow during extrusion and improve the surface finish of extruded profiles; The decrease and refining of large unbalance phase Mg, Si particles and Al-Fe-Si phase particle in the structure, will redu

Feb 28 (GMT +8 )    Source: SMM  SHANGHAI, Feb 28 (SMM) – Multiple investment banks and institutes have made their forecast on aluminium prices for 2018 and here is the roundup: Goldman Sachs raised its forecast to $2,000/mt due to China’s continuous winter production cut policy. UBS expected the price to climb to $2,400/mt due to a tight supply globally including China. Morgan Stanley expected the price of the lightweight metal to average at around $2,116/mt ($0.96/lb) in 2018-2019, up 7% supported by China’s supply-side reform policies. Bank of America Merrill Lynch saw support in base metals in general and lifts its aluminium price outlook to $2,381/mt ($1.08/lb) for 2018. Macquarie saw an average of $1,938/mt this year due to robust demand from China. This was up 7% from its previous forecast. JPMorgan was not so bullish on aluminium and lowered its price forecast for the second quarter to $1,970/mt. The bank sees weakening demand in China due to the country’s