| 摘要 |
A screw machining material consisting of Zn, Al, Cu and Mg is produced by alloying these elements in predetermined proportions, then continuously or semi-continuously casting the alloy into billets while offsetting its cracking tendency, then extruding such billets into rods, and finally drawing the obtained rods up to the final screw machining size. Such material can optionally be heat treated to improve its dimensional stability. The articles screw machines from this material may be suitably plated resulting in an excellent final product.
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