plans regionaux pour: Topics by Science.gov
Aug 01, 2017·APPARATUS FOR MELTING AND POURING METAL. DOEpatents. Harris, F.A. 1958-02-25. This patent relates to a crucible for melting and pouring a metal under controlled atmospheric conditions. The crucible has a frangible plug in the bottom and a retaining device to prevent the entrance of the broken portions of the plug into the mold without interfering with the flow of the melt.