Tret'yakov

The author revealed the influence of thermalphysic properties of porous net materials (PNM) on the formation mechanism of the joint produced by the fusion welding. The designs of get-forming elements and plastic deformation in the PNM manufacture process have action upon anisotropy of efficient thermal conductivity. The method is presented to calculate the PNM efficient thermal conductivity and its anisotropy. Functional relationships are obtained to estimate technological process parameters providing the PNM production with prescribed thermalphysic properties. Experimental research of efficient thermal conductivity confirmed the adequacy of the obtained regularities; the research was performed both by the cylinder method and the plate method. The results of theoretical and experimental studies of thermalphysic properties are used for evaluation of energy input rate necessary for fusion welding of porous elements.