METHOD FOR RECOVERY OF WORN-OUT SURFACES OF AXLE JOURNALS OF CAR WHEEL PAIRS BY MEANS OF LASER FUSING
FIELD: mechanical engineering. SUBSTANCE: worn-out surfaces of axle journals are degreased and subjected to mechanical working. Then laser fusing and grinding are performed. Basic metal of axle journal is controlled thermostatically at temperature of at least 150 C, and fusing material is annealed a...
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| creator | KORCHAGIN ALEKSANDR PETROVICH VZJATKIN GENNADIJ ALEKSEEVICH KOZUBENKO IVAN DMITRIEVICH RASSOKHA ANATOLIJ IVANOVICH GLAZKOV VLADIMIR SERGEEVICH BYZOVA NINA EGOROVNA RADIONOV JURIJ SERGEEVICH |
| description | FIELD: mechanical engineering. SUBSTANCE: worn-out surfaces of axle journals are degreased and subjected to mechanical working. Then laser fusing and grinding are performed. Basic metal of axle journal is controlled thermostatically at temperature of at least 150 C, and fusing material is annealed at temperature of 300-350 C for 30-35 min. This done, laser fusing is carried out in the following modes: laser power is at least 1.5 kW with laser radiation diameter of not less than 1.5 mm powder fed at speed of 0.1 g/s and more, angle of nozzle slope to vertical axis of laser beam is equal to 35-45 deg. Beads are superposed one upon the other at overlap coefficient of 0.5-0.7 with subsequent thermal treatment. Axle journal is turned to depth not exceeding the height of laser fusing bead. Thermal treatment of journals after fusing is performed in the following mode: heating of journal up to 580 15 C, maintenance of axle journal at the temperature for at least 10 min, and cooling of axle journal in still air. EFFECT: enhanced wear resistance of recovered journal surface. 5 clo |
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SUBSTANCE: worn-out surfaces of axle journals are degreased and subjected to mechanical working. Then laser fusing and grinding are performed. Basic metal of axle journal is controlled thermostatically at temperature of at least 150 C, and fusing material is annealed at temperature of 300-350 C for 30-35 min. This done, laser fusing is carried out in the following modes: laser power is at least 1.5 kW with laser radiation diameter of not less than 1.5 mm powder fed at speed of 0.1 g/s and more, angle of nozzle slope to vertical axis of laser beam is equal to 35-45 deg. Beads are superposed one upon the other at overlap coefficient of 0.5-0.7 with subsequent thermal treatment. Axle journal is turned to depth not exceeding the height of laser fusing bead. Thermal treatment of journals after fusing is performed in the following mode: heating of journal up to 580 15 C, maintenance of axle journal at the temperature for at least 10 min, and cooling of axle journal in still air. 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SUBSTANCE: worn-out surfaces of axle journals are degreased and subjected to mechanical working. Then laser fusing and grinding are performed. Basic metal of axle journal is controlled thermostatically at temperature of at least 150 C, and fusing material is annealed at temperature of 300-350 C for 30-35 min. This done, laser fusing is carried out in the following modes: laser power is at least 1.5 kW with laser radiation diameter of not less than 1.5 mm powder fed at speed of 0.1 g/s and more, angle of nozzle slope to vertical axis of laser beam is equal to 35-45 deg. Beads are superposed one upon the other at overlap coefficient of 0.5-0.7 with subsequent thermal treatment. Axle journal is turned to depth not exceeding the height of laser fusing bead. Thermal treatment of journals after fusing is performed in the following mode: heating of journal up to 580 15 C, maintenance of axle journal at the temperature for at least 10 min, and cooling of axle journal in still air. 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SUBSTANCE: worn-out surfaces of axle journals are degreased and subjected to mechanical working. Then laser fusing and grinding are performed. Basic metal of axle journal is controlled thermostatically at temperature of at least 150 C, and fusing material is annealed at temperature of 300-350 C for 30-35 min. This done, laser fusing is carried out in the following modes: laser power is at least 1.5 kW with laser radiation diameter of not less than 1.5 mm powder fed at speed of 0.1 g/s and more, angle of nozzle slope to vertical axis of laser beam is equal to 35-45 deg. Beads are superposed one upon the other at overlap coefficient of 0.5-0.7 with subsequent thermal treatment. Axle journal is turned to depth not exceeding the height of laser fusing bead. Thermal treatment of journals after fusing is performed in the following mode: heating of journal up to 580 15 C, maintenance of axle journal at the temperature for at least 10 min, and cooling of axle journal in still air. EFFECT: enhanced wear resistance of recovered journal surface. 5 clo</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING UNIVERSAL MACHINE TOOLS WELDING WORKING BY LASER BEAM |
| title | METHOD FOR RECOVERY OF WORN-OUT SURFACES OF AXLE JOURNALS OF CAR WHEEL PAIRS BY MEANS OF LASER FUSING |
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