A multi-metallic foil technology for minting medals and...

B - Operations – Transporting – 44 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B44B 5/00 (2006.01) A44C 21/00 (2006.01)

Patent

CA 2222096

The invention deals with a technology for minting coins and medals. The technology is based on the utilization of metal blanks with similar diameters, one being very thin (hereafter named as the foil), joined together by mechanical means during the impartion of the surface details by the minting dies. The technology requires the design and manufacture of a special geometry in the edge of the thicker disk in order to make possible assembly of the metal blanks. The proposed technology is based on a multi-stage manufacturing process consisting of three cold metal forming operations (preforming, rimming and coining) and one intermediate annealing treatment. The first metal forming operation ensures the preforming of the thicker disk blank, hereafter named as the disk. The second metal forming stage is the rimming operation in which the preformed disk is bent along its diameter in order to generate a suitable profile for subsequent assembly with the foil. The third metal forming stage is a coining operation in which the metal blanks (disk and foil) are assembled together, by locking the foil into the rimmed edge of the disk, during the imprint of the surface details. The annealing treatment is to be performed before the coining operation. The goal is to restore the initial ductility of the disk prior to the final coining stage.

Système pour la frappe de pièces de monnaie et de médailles à partir de flans métalliques de diamètres semblables, dont un très mince (ci-après feuille), ces flans étant reliés entre eux par voie mécanique lors de l'impression des détails superficiels par les matrices de frappe. Le système comporte la conception et la fabrication d'un disque plus épais dont le pourtour présente une géométrie particulière afin de permettre l'assemblage des flans métalliques. Ledit système se fonde sur un procédé de fabrication en plusieurs étapes, comprenant trois opérations de formage à froid du métal (préformage, cordonnage et frappe) et un traitement de recuit intermédiaire. La première opération de formage de métal assure le préformage du flan discoïdal plus épais (ci-après disque). La seconde étape de formage de métal est l'opération de cordonnage dans laquelle on déforme le disque dans le sens diamétral afin de générer un profil permettant son assemblage ultérieur à la feuille. La troisième étape de formage de métal est une opération de frappe comportant l'assemblage des flans métalliques (disque et feuille) par emboîtement de la feuille dans le pourtour cordonné du disque au cours de l'impression des détails superficiels. Le traitement de recuit s'effectue avant l'opération de frappe. Le but visé est de restituer la ductilité initiale du disque avant l'étape de frappe finale.

LandOfFree

Say what you really think

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

Rating

A multi-metallic foil technology for minting medals 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 A multi-metallic foil technology for minting medals and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A multi-metallic foil technology for minting medals and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1735798

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