Heater for hot isostatic pressing apparatus

摘要

A heater for use in the HIP apparatus for treating a work item or work items in a high temperature and pressure gas atmosphere by isostatic application of pressure in a heated condition, the heater including at least one heater assembly unit including a meandering heating element arranged into a cylindrical grid-like form having axial slits open alternately at the upper and lower ends thereof; a plurality of radial projections of a predetermined width extending radially outward from the upper ends of the meandering heating element at a number of predetermined positions including terminal ends thereof; a number of mounted holes formed through the radial extensions of the heating element; a number of support columns fixedly erected respectively on retaining members and having a male screw portion at the upper ends thereof respectively protruded upwardly through the mounting holes in the radial extensions of the heating element; and a number of nuts respectively threaded and tightened on the protruded ends of the male screw portions of the support columns to thereby support in suspended state the heating element securely on the support columns, forming a cylindrical space therein.