СЦЕПЛЕНИЕ ЖЕЛЕЗНЫХ ПОКРЫТИЙ СО СТАЛЬЮ И ЧУГУНОМ

Аннотация

The iron plating process in metilsulfate chloride electrolytes was investigated. The conditions of iron plating ensuring the coating adherence with steel and pig-iron required in the technological processes of re- conditioning and strengthening of machine pieces. Process conditions ensuring the high coating adherence with steels 45, 15HGT, 40H, grey and high-strength pig-iron witch include steps: powering on of polarizing current with initial density 0,15−0,5 kА/m2; immediate after insertion of pieces in electrolyte and raising of current density up to the working level with the rate 4-5 A/m2⋅s. Metallographic, polarizing and other re- searches show influence of initial electrolysis conditions on formation of the first layers of coverings and process of iron electrocrystallization on structural phases of tempered steel, grey and high-strength pig-iron.

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