Abstract
The history and development of the process of cyclic compacting are outlined briefly. The results are presented of the initial evaluation work in which 0·75-in.-wide strip was produced in a variety of metal powders. Data on the process variables with a more advanced tool-set are given for the compaction of stainless-steel Type-316L powder using uncompacted powder depths of up to 0·25 in. Details are given of the percentage (solid) density achieved in the compacting of a variety of metal powders; and of the physical properties attained by these following sintering and after cold reduction to strip. Development of the tool-sets is traced in relation to both design and materials. A description is given of a prototype tool-set which has been used for the production of continuous strip in copper and iron powders up to 4 ½ in. wide × 0·2 in. thick. The commercial significance of the cyclic-compacting technique is noted both as regards the high-density product obtainable and the relatively low capital cost of equipment required for the production of small quantities of strip or bar material.
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