| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to hardening of parts operated under abrasive wear conditions. Dip-transfer surfacing of wearproof material with application of graphite electrode is executed. Facing material represents a cermet composite containing consolidated alloys of carbides, borides, nitrides and reinforcing ceramic superhard inclusions of boron carbide, corundum and carbocorundum. Simultaneously wit surfacing, surface being hardened is alloys with boron, nitrogen and carbon. After surfacing, the part is heated in furnace to 750?770°C and held for 1.5?2 minutes. Then, quenching and low tempering are performed at part heating to 150?160°C and holding for 8?10 minutes.EFFECT: two- threefold increase in toughness, threefold increase in wear resistance.1 tbl |
