METHOD OF RENEWAL OF INTERNAL CYLINDRICAL SURFACES OF CAST IRON ARTICLES

METHOD OF RENEWAL OF INTERNAL CYLINDRICAL SURFACES OF CAST IRON ARTICLES

the invention relates to the methods of renewal of the openings of basic parts made from cast iron, and can be used, for example, for repairing the cases of internal combustion engines. A method of renewal of internal cylindrical surfaces of cast iron articles includes preliminary annealing of artic...

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Hauptverfasser: KOTRECHKO OLEKSII OLEKSIIOVYCH, AFTANDILIANTS YEVHEN HRYHOROVYCH, ZAZYMKO OKSANA VOLODYMYRIVNA, LOPATKO KOSTIANTYN HEORHIIOVYCH, SIDORCHENKO DMYTRO OLEKSANDROVYCH
Format: Patent
Sprache:eng
Schlagworte:
COMBINED OPERATIONS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OTHER WORKING OF METAL
PERFORMING OPERATIONS
TRANSPORTING
UNIVERSAL MACHINE TOOLS
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creator KOTRECHKO OLEKSII OLEKSIIOVYCH
AFTANDILIANTS YEVHEN HRYHOROVYCH
ZAZYMKO OKSANA VOLODYMYRIVNA
LOPATKO KOSTIANTYN HEORHIIOVYCH
SIDORCHENKO DMYTRO OLEKSANDROVYCH
description the invention relates to the methods of renewal of the openings of basic parts made from cast iron, and can be used, for example, for repairing the cases of internal combustion engines. A method of renewal of internal cylindrical surfaces of cast iron articles includes preliminary annealing of article at a temperature 600 - 650 DEGREE C with holding in electric furnace for a period of 1.5 hours. After annealing the article is heated to the temperature of 450 - 550 DEGREE C. Then, the heating of article is conducted to the temperature of 820 - 840 DEGREE C with its cooling in the sprayer at a speed of 150 DEGREE C/s at displacement of article relative to the source of heating and cooling with a rate of 2-4 mm/s. After this, the final annealing of article is carried out in the electric furnace at a temperature of 180 - 200 DEGREE C during 2 hours. Technical result - increase of the wear resistance of renewed articles.
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subjects COMBINED OPERATIONS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OTHER WORKING OF METAL
PERFORMING OPERATIONS
TRANSPORTING
UNIVERSAL MACHINE TOOLS
title METHOD OF RENEWAL OF INTERNAL CYLINDRICAL SURFACES OF CAST IRON ARTICLES
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