METHOD FOR RESTORING WORN SLEEVE OF PLASTIC MATERIAL Russian patent published in 2005 - IPC

FIELD: repairing production, possibly repairing of worn sleeves of plastic materials.

SUBSTANCE: method comprises steps of moving by means of tool art of inner material of sleeve to wear zone arranged on inner surface of sleeve; at first placing worn sleeve on core in press-mold (where worn surface is spaced from target one by wear value) in press; by action of inverted effort of press moving part of inner material of sleeve from zone of mounting surface to wear zone with use of tool in the form of indenters whose number n is set according to expression: n = 4d_in H_h t_w / πd² _ind h_ind where d_in -_{inner diameter of album sleeve; Hh -height of album sleeve; tw - thickness of worn zone; dind -diameter of indenter; hind - depth of indenter embedding; creating three-dimensional plastic deformation due to pressing indenters into surface of sleeve in radial direction from outside.}

EFFECT: possibility for obtaining initial wear resistance and useful life period of sleeve due to restoring nominal size and properties of friction surface.

1 dwg