| 摘要 |
<p>A metal casting die, and a method for its production, are described. By the method the die has provided over at least a part of its internal cavity forming surfaces, indentations of predetermined depth, area and distribution, by employing a technique selected from the group comprising photoetching, electrochemical etching and grit blasting. The die cavity forming surfaces also have thereon, over at least those surfaces with indentations, a coating of a hard, corrosion and erosion resistant material which extends into and between each indentation as a continuous layer. <IMAGE></p> |
