Manufacturing technology stamp-welded workpieces based on porous-net material with desired properties

Abstract

Abstract The manufacture of stamp-welded and porous elements of porous-net material (PNM) from stainless steel 12H18N10T (0,12% C, 18% Cr, 10% Ni, 1% Ti) is difficult due to the low ductility under tension and the lack of weldability. It limits the use of PNM, although the fact that they may have the necessary technological and operational properties. The effect of porosity and heat conductivity anisotropy on the strength of welded splices of parts made of PNM have been established. Technologies of electron-beam welding (EBW) and sheet stamping of filter elements, which are implemented during the manufacture of prototypes of filter elements with a cleaning precision 10-12 microns, are presented.