FIELD: process engineering.
SUBSTANCE: invention relates to electrophysical and electrochemical machining, particularly, to spark-erosion case-hardening. In steel part case-hardening, graphite electrode makes and anode and steel part makes a cathode. After case-hardening, part surface is subjected to spark-erosion alloying by carbon. Note here that said alloying is carried out step-by-step by the same graphite electrode. At every step, power discharge in spark-erosion alloying is decreased.
EFFECT: decreased surface roughness.
4 cl, 3 tbl, 6 dwg
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