Process for injection molding of slurries

Process for producing of a green obtained by injection and solidification in a mold, brought to a temperature lower than 0.degree. C., of a slurry containing at least one of a metallic and nonmetallic powder in suspension in a liquid wherein said nonmetallic powder has a composition which excludes an organic powder, which comprises:

• housing the mold in one of a first vessel having an outlet aperture and a second, gas tight vessel having at least one outlet aperture in a wall thereof, said at least one aperture of said second vessel being selectively opened;
• housing in one of the first and second vessels at least one mechanism ensuring opening and closing of the mold;
• producing in the interior of one of the first and second vessels one of a continuous and discontinuous current of dry gas, the dew point of which is not greater than the temperature of the mold and is of a value between 0.degree. C. and -100.degree. C.;
• injecting said slurry into said mold when said mold has been brought to said temperature lower than 0.degree. C.;
• ejecting the green from said mold;
• and
• passing the green through said outlet aperture in the wall of the first vessel or through said at least one outlet aperture of said second vessel upon said at least one outlet aperture of said second vessel being opened.