Abstract
Low-pressure diecasting process is widely employed as a manufacturing method for cylinder heads and aluminum wheels. This method suffers from drawbacks such as low productivity, difficulty in controlling conditions, and limited freedom of gate design. Moreover, the rising complexity of products means that the required degree of difficulty involved in manufacturing is increasing, while also requiring high levels of quality and productivity. Conventional technology is not sufficient to overcome such problems and suffers from low cost competitiveness. To resolve these problems, we conducted analysis of a number of technologies from the ground up, including molten metal treatment, pressurization control, die cooling system, and gate design, and significantly revised basic plans for the casting machine, holding furnace, and die design in development of a special low-pressure diecasting method. This method combines quality characterized by rapidly inject molten metal under stable temperature conditions and constant pressure casting, and cost competitiveness in terms of productivity.
