METHOD OF INDUCTION SURFACING Russian patent published in 2014 - IPC B23K13/01 B23K101/04 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for increasing wear resistance of inner cylindrical surfaces. Proposed method comprises application of facing mix on the surface and heating the mix and surface by inductor unless their joint fusion. Article is places in retainer to spin therewith about horizontal mirror axis of cylindrical surface. Hollow cylinders pre-glued or pre-sintered from the mix is fitted inside the article. Ring of heat resistant non-metal material are arranged between said cylinders, said material being a graphite with OD equal to cylinder OD and ID smaller than cylinder ID. Inductor is fitted inside the article to spin both for mix and facing surface smelting. Article is spun at speed selected to prevent the melt running-off. After surfacing inductor is switched off to spin the article unless hardening of the melt. Then, built-up surface of article and rings are machined to level their diameters, rings being cut to make lubricant grooves in the article.

EFFECT: optimised process, higher tribotechnical properties.

2 dwg