The ring which is obtained by finishing process and the aforementioned process for the seal ring for the ceramic make machine of the pump

摘要

It regards the finishing process regarding, the seal ring for the ceramic make machine of the pump of the type which includes with the 1st cold forming process regarding the ceramic powder where this invention features that it is executed making use of the punch which possesses the head to which forming step has minute projection ones of plural point conditions, was inserted in the appropriate mold and the 2nd sinterring process regarding the ring. As for another purpose of this invention, it is the seal ring which is obtained by the aforementioned process. Selective figure It is not