Method of producing an aluminium alloy brazing sheet and...

B - Operations – Transporting – 32 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B32B 15/01 (2006.01) C22C 21/00 (2006.01) C22F 1/04 (2006.01)

Patent

CA 2593276

The invention relates to a method of producing an aluminium alloy brazing sheet for the manufacturing of light brazed assemblies, wherein said brazing sheet has good formability, combined with a low susceptibility to core penetration in the end annealed as~produced condition after stretching, forming and/or shaping and brazing, comprising the steps of a) casting an AlMn core alloy, b) homogenization, c) cladding said core alloy with an AISi- brazing alloy, d) hot and/or cold rolling, e) recrystallization annealing, f) strain hardening said annealed product to a second thickness with a deformation of between 10% and 40%, and g) end annealing said brazing sheet at the second thickness for 1 to 10 hours between 250~C to 420~C, such that the end annealed product is not recrystallized and the mean grain diameter provided by the recrystallization anneal is maintained at less than about 60 ~m.

La présente invention concerne un procédé de production d'une feuille de brasage en alliage d'aluminium pour la fabrication d'ensembles brasés légers. Cette feuille de brasage qui se prête bien au formage est faiblement susceptible à la pénétration du coeur à l'état brut de production du recuit final après étirement, formage et/ou formage et brasage. Ce procédé enchaîne plusieurs opérations: a) fonte d'un noyau aluminium-manganèse; b) homogénéisation; c) garniture de l'alliage noyau avec un alliage de brasure aluminium-silicium; d) laminage à chaud et/ou à froid; e) recuit de recristallisation; f) écrouissage du produit recuit donnant une deuxième épaisseur affectée d'une déformation de 10 % à 40 %; et g) recuit final de la feuille de brasage à une deuxième épaisseur pendant 1 à 10 heures à une température comprise entre 250 °C et 420 °C, de façon que le produit recuit final ne se recristallise pas, et que le diamètre granulaire moyen du recuit de recristallisation soit conservé en dessous d'environ 60?m.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method of producing an aluminium alloy brazing sheet and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing an aluminium alloy brazing sheet and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing an aluminium alloy brazing sheet and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1773715

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.