c
Rings parameters after rolling Controlled parameters Size tolerance, mm Variation in wall thickness, not more 1,2 Ovality and conicity of outer surface 1.5 Ovality and conicity of inner surface 2.5 Forging width variation 1.5 Circular burr in axial direction width not more 2.0 Circular burr in radial direction width not more 2.0 Ends gradation and concavity from minimum size, not more 0,8 Underfill in angles with radius R not more 6,0 Surface defects of forging character, depth of marks on the outer surface fromminimum size, not more (GOST 8479-70) 0.5 Surface defects of forging character, depth of marks on the inner surface fromminimum size, not more (GOST 8479-70) 0.5 Surface defects of forging character, depth of marks on width from minimumsize, not more {GOST 8479-70) 0.7