Yoyamba yopangira ntchito popanga mphete zopanda msoko ndikupanga ring blanks. Mizere yozungulira yozungulira imasintha izi kukhala zoyambira zonyamula zipolopolo, magiya a korona, ma flanges, ma turbine disks a injini za jet ndi zinthu zina zopanikizika kwambiri.
Makina osindikizira a Hydraulic ndi oyenera kwambirikupanga ring blanks: Mphamvu zazikulu, zikwapu zazitali komanso kuchuluka kopanda malire ndizomwe zimafunikira pakupangira mphete yopanda kanthu. Mizere yosinthika kwambiri kapena njira zamasiteshoni zingapo zotulutsa zokongoletsedwa zimagwiritsidwa ntchito, kutengera kuya kwamtundu wazinthu komanso / kapena kuchuluka komwe kumafunikira. Zida zoyika pakati, mikono yozungulira, maloboti ndi ma manipulators amatsimikizira magawo oyenera ndikuwongolera kufa.