C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
26/106, 154/124,
C23C 28/00 (2006.01) B23K 11/18 (2006.01) B23K 11/34 (2006.01) B23K 35/00 (2006.01) B32B 15/04 (2006.01) C09J 5/02 (2006.01) F16B 11/00 (2006.01)
Patent
CA 1322305
ABSTRACT OF THE DISCLOSURE Aluminium sheet is pre-treated to form an inorganic surface layer of a coating weight of 0.01 to 1.5 g/m2 containing at least 10% by weight of chromium and no more than 10% by weight of aluminium. Chemical conversion coating and "no-rinse" pre- treatments are preferred. Environmentally stable structural adhesive bonds are formed. The pre-treatment can be performed more rapidly than in prior art structures. The components can be formed by cutting the aluminium sheet which has been pre-treated and then preferably coated with press-lubricant. Such sheet can be stored for up to 6 months prior to forming. The components are made into desired shapes and then secured together by adhesive alone or in combination with spot-welding.
616083
Maddison Anthony
Selwood Patrick G.
Sheasby Peter G.
Alcan International Limited
Bl Technology Limited
Fetherstonhaugh & Co.
Maddison Anthony
Selwood Patrick G.
LandOfFree
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