PACKED METALLIC PIG Russian patent published in 1997 - IPC

FIELD: ferrous metallurgy. SUBSTANCE: packed metallic pig has trapezoidal cross section with engaging members on its lateral longitudinal surfaces. Said members are in the form of protrusions formed by inner and outer surfaces and recesses formed respectively by outer and inner surfaces. Said surfaces are coincided and partially overlapping along height of pig and they form dents and recesses of respective shape limited in longitudinal direction by transitional surfaces. In order to join adjacent rows to pack, small base of pig has protrusions and recesses alternating by staggered fashion. Inner surface of protrusions and respectively outer surface of recesses of engaging members of lateral longitudinal surfaces of pig are inclined by 40-50 degrees relative to horizon. EFFECT: improved quality of packed pig. 6 dwg