FIELD: hardening of cylindrical metal articles. SUBSTANCE: method includes treatment of metal articles by through of high-velocity jets of alloying element accelerated with the help of circular explosive linear charge located round treated part at distance of R which is found within relation of 0 ∠ R ∠ 0.414R1, where R1 is radius of treated part. Throwing is effected once from side surface of charge. EFFECT: time for treatment and simplified process. 1 tbl
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