POROUS METALLIC ELEMENTS FOR THE LUBRICATION OF YARN

The properties of porous permeable lubricating elements fabricated fro m sintered metal powders were studied. It was shown that the working p roperties of the material are determined by its pore structure. Tests on type VTS-07/2 twisting machines revealed that the newly developed l ubricating elements increase the degree of lubrication ten-fold, and d ecrease thread breakage by 13-30%. (Ise of these elements permitted an increase in spindle rotation rate, leading to a 7-9% increase in mach ine productivity, and also decreased the extent of dusting by 57-76%.