APPARATUS AND METHODS

摘要

We describe apparatus for controlling the filter channel opening size of a ceramic filter element, said ceramic filter element having flared pores, the apparatus comprising: a lapping machine having a lapping plate; and a filter holder to hold a ceramic filter element for controlled lapping of said flared pores; wherein said filter holder comprises: a filter element mount to mount a filter element to be lapped such that a surface of said filter element lies substantially flush with a lower face of said filter holder; an adjustable actuator to controllably move said surface of said filter element so that it remains substantially flush or projects beyond said lower face of said filter holder during lapping; and means for urging said filter holder towards said lapping plate.