| 摘要 |
<p>A method of die casting, particularly of metals with high melting points including iron and steel, characterized by inserting in the cavity of each die a pasteboard form prefabricated in the shape of the respective cavity and containing a refractory substance, then closing the mold and casting the metal part in the usual manner. Where desired, localized tempering of the part being cast may be obtained by reducing the thickness of the prefabricated pasteboard form in that region, and conversely, soft regions may be provided by reinforcing the thickness of the forms in those locations.</p> |
