Title:
ALUMINUM ALLOY FOR COLD FORGING AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3516566
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an aluminum alloy for cold forging, requiring no annealing treatment before cold forging and capable of producing a high strength even if solution hardening treatment is omitted after cold forging.
SOLUTION: The aluminum alloy for cold forging has a composition consisting of, by weight, 0.4-0.8% Mg, 0.4-1.0% Si, 0.15-0.5% Cu, 0.005-0.2% Ti, and the balance Al with inevitable impurities and satisfying the relation of Y≥(1/1.73)X+0.15 when X and Y represent Mg content (wt.%) and Si content (wt.%), respectively. A cold forged product is produced by subjecting this alloy to extrusion at 440 -560'C and then to press quenching without delay and subjecting the resultant slug to cold forging and successively to aging treatment or short-time heating treatment at 190-250°C for 5-30min.
Inventors:
Oka, Takashi
Hirano, Masakazu
Kaita, Kazuhiro
Hirano, Masakazu
Kaita, Kazuhiro
Application Number:
JP35479896A
Publication Date:
April 05, 2004
Filing Date:
December 22, 1996
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C22F1/00; C22C21/02; C22C21/06; C22F1/05; (IPC1-7): C22C21/02; C22C21/06; C22F1/05
Attorney, Agent or Firm:
香本 薫