Abstract

1. A study was made of the possibility of adding surface-active substances to a plasticizer (paraffin wax) and their effects on the extrusion characteristics of hard-alloy mixtures and quality of finished parts. It was established that the addition of 1% of a SAS to 5% of paraffin wax facilitates deformation through an adsorption effect, the extrusion pressure thus being lowered by 100 kg/cm2. 2. Surface-active substances considerably simplify the preparation of a mixture for extrusion by eliminating the process of repeated mixing through a multiple-channel die.

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