METHOD FOR WEIGHING AND INJECTING MOLTEN METAL

摘要

PROBLEM TO BE SOLVED: To always smoothly weighing and injecting a metallic material by arranging a storing part of the liquid-state metallic material in an injection apparatus and obliquely disposing the apparatus. SOLUTION: A weighing chamber 18 having a necessary length, is formed by shrinking the diameter in this tip part communicating with a nozzle member 11 in a heating cylinder 1. An injection plunger 21 at the tip part of an injection shaft 2 is inserted so as to be freely advanced/retreated in the weighing chamber 18. The storing part B for metallic material is formed in an interval between the surrounding of a shaft part on the injection plunger and the heating cylinder 1. The metallic material melted with an outer heating, is stored into the storing part B by utilizing the inclination of the heating cylinder 1. The metallic material is sucked into the weighing chamber from the surrounding of the injection plunger 21 with negative pressure at the weighing chamber side developed by retreatedly shifting the injection plunger 21 to perform the weighing. The injection plunger 21 is advanced to perform the injection.