FIELD: machine building.
SUBSTANCE: ring is made with opened external and opened internal periphery. At least on one of said peripheries a tooth structure is made. The ring has at least one welded joint made by flash-butt welding. The tooth structure is made by means of rolling, cutting or their combination. The tooth structure can have crests or skew teeth.
EFFECT: high quality and accuracy of rings manufacturing.
19 cl, 7 dwg
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