METHOD FOR MAKING RAILWAY ROAD WHEELS OF CONTINUOUSLY CAST INGOT Russian patent published in 1999 - IPC

FIELD: plastic metal working, namely manufacture of railway road wheels. SUBSTANCE: method comprises steps of cutting continuously cast ingot by separate blanks and sorting them according to defects of axial zone. When defect size is more than 30 mm blank is worked. Then remaining blanks are upset between upper and lower plates of press, upset in ring, speeded up at marking opening, broached, shaped, rolled and sized. Blanks with defect size less than 10 mm are speeded up on dead underpunch plate. Blanks with defect size 10-30 mm - on hollow underpunch plate. Diameter of marked opening consists 0.5-0.6 of diameter of broached opening. Blanks are heated before upsetting up to 1260-1280 C. EFFECT: high degree of removing damaged metal out of blank body. 2 cl, 6 dwg, 1 ex