Patents Assigned to Etude et Development en Metallurgie
  • Patent number: 4715427
    Abstract: A process and apparatus for automating a hot-air baking cycle of sand molds. Such process and apparatus make it possible to regulate the hot-air baking or drying speed in a sand mold during a baking cycle. This regulation can be accomplished before casting, and in particular, before low-pressure casting. The process includes dividing the cycle into characteristic phases associated with particular baking parameters. The apparatus includes a calculator assembly for obtaining baking parameters. The invention can be used for the baking of foundry molds, and particularly, foundry molds for aeronautical parts.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: December 29, 1987
    Assignee: Etude et Development en Metallurgie
    Inventors: Pierre L. Merrien, Pierre A. Merrien
  • Patent number: 4712601
    Abstract: A process and apparatus for automating the hot-air baking of sand molds before casting a sample in the mold using low pressure casting techniques. The process includes dividing the cycle into characteristic phases associated with particular baking parameters, determining and recording the optimal baking parameters associated with each phase and regulating the hot air blown on the mold so as to assure correspondence between the optimal parameters and those actually obtained during an actual baking cycle.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: December 15, 1987
    Assignee: Etude et Development en Metallurgie
    Inventors: Pierre L. Merrien, Pierre A. Merrien
  • Patent number: 4573522
    Abstract: A process and apparatus for automating a hot-air baking cycle of sand molds. Such process and apparatus make it possible to regulate the hot-air baking or drying speed in a sand mold during a baking cycle. This regulation can be accomplished before casting, and in particular, before low-pressure casting. The process includes dividing the cycle into characteristic phases associated with particular baking parameters. The apparatus includes a calculator assembly for obtaining baking parameters. The invention can be used for the baking of foundry molds, and particularly, foundry molds for aeronautical parts.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: March 4, 1986
    Assignee: Etude et Development en Metallurgie
    Inventors: Pierre L. Merrien, Pierre A. Merrien