WEAR RESISTANT ALUMINUM ALLOY LONG-LENGTH BODY, PRODUCTION METHOD THEREFOR AND PISTON FOR CAR AIR CONDITIONER

• Main Authors: KATO TAKAYUKI, IDETO KIICHI, NOJIRI MASASHI, NAKAI YOSHIHIRO, SATO SHINICHI, UTSUNOMIYA KIYOTAKA, KISHIKAWA YOSHIKI, IKEDA TOSHIYA
• Format: Patent
• Language: English
• Published: 29.01.2003
• Edition: 7
• Subjects: ALLOYS; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide a wear resistant aluminum alloy long-length body which has excellent shear cuttability and can be subjected to die peeling treatment, and to provide a production method therefor. SOLUTION: The wear resistant aluminum alloy long-length body has a composition containing, by mass, 7 to 13% Si, 0.001 to 0.3% Fe, 2.0 to 5.0% Cu, 0.3 to 1.0% Mg, 0.001 to 0.3% Mn, 0.001 to 0.3% Cr, 0.003 to 0.03% Sr and 0.005 to 0.05% Ti, and the balance Al with inevitable impurities. The size of Si particles present in the inside is <=10 μm by the average value, and is <=30 μm by the maximum value, and the size of Si particles in the range from the surface layer to a depth of 1.5 mm lies in the range of <=6 μm by the maximum value. The Al alloy has a crystal structure of one kind selected from the group consisting of a hot rolled structure, a recrystallized structure and a mixed structure of a hot rolled structure and a recrystallized structure.