| 摘要 |
<p>An apparatus for processing material into a semisolid material thixotropic state and subsequently die casting the materials. The apparatus includes a shearing mechanism (14) and a shot sleeve (16) and also includes a barrel (38) which is adapted to receive either solid or liquid material thereinto at one end. As the material is passed through the barrel (38) it is subjected to shearing and heating or cooling to bring the material to a temperature which permits the presence of both liquid and solid particles therein. The shearing action promotes the formation of non-dendritic spherical particles and, accordingly, a semisolid thixotropic slurry is formed. From the shearing mechanism (14) the slurry is metered into a shot sleeve (16) and once a single shot or charge of the slurry is received therein, a ram (76) is advanced to force the slurry into a casting die cavity (100) where it solidifies in the form of the desired article.</p> |
