METHOD OF ANODE DYNAMIC HARDENING OF PART FROM CURRENT CONDUCTING MATERIAL Russian patent published in 2011 - IPC B23H5/04 

FIELD: process engineering.

SUBSTANCE: invention relates to combined methods of processing involving application of electric field and mechanical surface hardening. Proposed method comprises mechanical and anode processing of part surface by metal granules with application of electric field in weal electrolytes based on non-toxic salts at low DC voltages, the processed part making the anode. Processing is carried out in three stages. At first stage, metal granules are placed on part processed surface. Then, electrolyte is fed along processed surface at the rate allowing granules transfer relative to processed surface, DC current is fed to granules and part to perform anode removal of allowance making the difference between total processing allowance and that for thirst processing stage. At second stage, current and electrolyte feed are interrupted to use the same granules for vibroimpact hardening to required amount of cold-hardening. At second stage, cold-hardened layer is anode-dissolved using current and electrolyte similarly to first stage on adjusting amount of allowance removal till amount of cold-hardening that provides for maximum strength of part material.

EFFECT: guaranteed cold-hardening that allows maximum durability of parts.

3 dwg, 1 ex