| 摘要 |
FIELD: plastic metal working; applicable in forge shops of metallurgical and machine-building plants in manufacture of wheels or similar products. SUBSTANCE: method of manufacture of wheel-type products includes preparation of initial blank, formation of intermediate semifinished product by indirect extrusion in form of bowl, formation of circular projection and branch, formation bowl of flange and disk part with formation of relief, formation of profile, rim part and the second flange, and final heat treatment and machining. Bowl is extruded in form of truncated cone with wall tape angle of at, at least, 30 deg, to form at the final stage of extrusion of bowl on wall end face of conical flange and to form preliminary relief of bottom part. Then, by applying force to flange and wall of bowl and displacing the blank whole volume, final formation of relief of disk part is effected to form circular projection by direct extrusion and to form wheel flange from the flange, and final formation of profile of rim part with wheel flange is accomplished by expanding the circular projection by diameter. The offered method allows manufacture of the product for three operations only with use of simple tools with no split dies. All for machining may be reduced as much as possible that allows combination of deformation texture with contour of wheel rim in the most loaded places to increase fatigue characteristics of the wheel. EFFECT: higher efficiency. |
