ALUMINIUM ALLOY AND PROCESS FOR MAKING ASSEMBLING COMPONENTS FROM SAID ALLOY

摘要

The invention relates to an aluminium alloy and to a process for making items from the claimed alloy. The composition of the aluminium alloy comprises 1.5...6% Cu; 0.5...1% Mg;0.5...1% Si and at least one of the following metals: Cr 0.01...0.2%; Mn 0.01...0.2%; Zr 0.01...0.2%;Ti 0.01...0.2% and for the remainder aluminium and undesired impurities. The process for making items from the claimed aluminium alloy comprises: hand-casting of the alloy in moulds at temperatures of 500...580 C; treatment of the castings with a lubricating and corrosion-proof composition comprising 3...25% the alkanolamine of the oleic acid with diethanolamine in a mole ratio of 1/2 and 97...75% water; trimming; boring; calibrating; threading; new treatment of the castings with the lubricating and corrosion-proof composition and assembling, the polishing composition consisting of a mixture of bentonite with a grain size ranging between 0.1 and 20 microns and 0...75% wood dust.