METHOD FOR MANUFACTURE OF MEMBER WITH OPEN THROUGH POROSITY Russian patent published in 2002 - IPC

FIELD: manufacture of porous, mainly, hardware with directed through ducts. SUBSTANCE: before molding of the member, fiberboards of the preset linear dimensions and cross-section profile are manufactured, molding of the blank is accomplished by laying of fiberboards in layers, the fiberboards are laid in each layer with formation of through ducts between them, the position of the fiberboards in the molding attachment is fixed, after that the fiberboards are integrated by thermal treatment, the process lock is removed in the process of heating, and stresses are removed and the surface of the fiberboards is cleaned, the blanks of the members are heated in a controlled atmosphere until the required temperature under rarefaction up to sintering of the fiberboards as a whole, on completion of sintering the members are cooled down and extracted from the moulds. EFFECT: improved regular structure of the porous space, enhanced specific surface, preset anisotropy and permeability. 18 cl, 3 ex