METHOD FOR MANUFACTURING OF CORE WITH EASILY DEFORMABLE COATING Russian patent published in 2010 - IPC B28B1/00 

FIELD: technological processes.

SUBSTANCE: method for manufacturing of core with easily deformable coating, where a gypsum layer is applied onto metal frame of core, gypsum layer is finished down to specified profile and size. Gypsum mould, which completely follows profile and dimensions of core, is taken off produced core, core is bored along its whole surface. After boring, gypsum surface of core is coated with varnish, internal surface of gypsum mould is lubricated with solid oil, gypsum mould is installed on core with provision of gap between gypsum mould and core. Rubber-like polymer is poured into produced gap, maintained until final polymerisation of polymer, and gypsum mould is withdrawn.

EFFECT: simplified technology of manufacturing.

4 dwg