Semi-solid cast forging apparatus and method and cast forged product

摘要

An excellent product having excellent mechanical properties and having a fine structure can be produced not only for a thin product but also for a thick product without using a complicated process or apparatus. After the molten metal is poured into the lower mold of the press controlled so that the solid phase ratio becomes a desired constant value so that supercooling occurs, a semi-solid slurry is prepared, and at least the upper mold is the semi-solid A semi-solid casting forging method in which the semi-solid slurry is compressed to form a product by moving the upper die or the lower die at a speed of 0.1 to 1.5 m / s after contacting the slurry. is there. It is preferable to use crystal grains having a particle size that increases fluidity by compression, and the particle size is preferably 50 μm or less.