Title:
ALUMINUM ALLOY-MADE HIGH STRENGTH FASTENER AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2017218609
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an aluminum alloy-made high strength fastener capable of stably maintaining high fastening force (axial force) even when used under high temperature environment.SOLUTION: There is provided a high strength fastener made of an Al ally containing Fe:1.5 to 6%, Zr:0.2 to 1.5%, Ti:0.15 to 1.2% and the balance: Al with inevitable impurities based on 100 mass% in total. The Al alloy preferably further contains Mg:0.2 to 2.5%. Such Al alloy does not permanently grow practically and is extremely excellent in dimensional stability. Therefor the fastener (bolt, nut or washer) contributes to stable maintenance of high fastening force (axial force) even when used under high temperature environment. By coating at least a slide contact face of the fastener with a burned Ni-P plating layer, increase of wear resistance or corrosion resistance of the fastener can be achieved.SELECTED DRAWING: Figure 1
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Inventors:
MATSUOKA HIDEAKI
KONDO MIKIO
KONDO MIKIO
Application Number:
JP2016111570A
Publication Date:
December 14, 2017
Filing Date:
June 03, 2016
Export Citation:
Assignee:
TOYOTA CENTRAL RES & DEV
International Classes:
C22C21/00; C22C19/03; F16B33/06; F16B35/00; F16B37/00; F16B43/00
Attorney, Agent or Firm:
Morioka Masayuki
Sansui International Patent Office
Sansui International Patent Office