FIELD: metal pressure forming. SUBSTANCE: method comprises steps of preliminary final upsetting of a blank, speeding it up and shaping; subjecting a semifinished product to rolling, bending out and broaching for removing a central zone with low quality physicomechanical properties; performing the broaching operation by two stages; realizing the first stage before the shaping operation. EFFECT: enhanced quality of railroad wheels. 7 cl, 4 dwg
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|
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| METHOD FOR ROLLING OF WHEEL-TYPE PRODUCTS | 1994 |
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RU2073577C1 |
