Ho na le mefuta e mengata ea likere tlhahisong, ho kenyeletsoa lisebelisoa tsa letsatsi, lisebelisoa tse otlolohileng, lisebelisoa tse habeli, lisebelisoa tsa kahare, lisebelisoa tsa kantle le lisebelisoa tsa bevel.
Tlhahiso ea lisebelisoa tsa phofo ea metallurgy e tlameha ho qala ka ho netefatsa lisebelisoa.Ho na le litekanyetso tse ngata tse mahareng tsa thepa ea metallurgy ea phofo.Joalo ka ha Japane, United States le Jeremane li etelletse pele lefats'eng ka lipatlisiso tsa metallurgy ea phofo, hajoale ho na le mefuta e mengata ea lisebelisoa bakeng sa litekanyetso tsa thepa tsa JIS, MPIF, le DIN.
Hangata li-gears li na le litlhoko tse itseng tsa matla, kahoo ts'ebetso ea thepa e khethiloeng e tlameha ho finyella litlhoko tsa sehlahisoa.Hajoale, lisebelisoa tse sebelisoang haholo bakeng sa likere ke lisebelisoa tsa Fe-Cu-C-Ci (tse lumellanang le JIS SMF5030, SMF5040, le MPIF FN-0205, FN-0205-80HT standard) Lisebelisoa tsa Fe-Cu-C le tsona lia fumaneha.
Boima ba lisebelisoa tsa tšepe tsa phofo, hobane likere li sebelisoa bakeng sa phetisetso, li na le litlhoko tse phahameng bakeng sa matla a likere, ka hona, boima ba lihlahisoa bo tla ba bo phahameng haholo, 'me ho hanyetsa leino ho tla ntlafatsoa le matla a phahameng.
Ho thatafala ha li-gear tsa metallurgy tsa phofo ho amana haufi-ufi le thepa, boemo ba sekhahla le ts'ebetso ea morao-rao ea sehlahisoa.Kahoo ha u reka likere, mofuta oa boima o tlameha ho bontšoa setšoantšong.
Ka mor'a hore lisebelisoa li siloe, e le ho ntlafatsa matla le ho roala ho hanyetsa ha lisebelisoa, mekhoa ea ho sebetsa ka morao hangata e eketsoa ho ntlafatsa tshebetso.Hangata ho na le mekhoa e 'meli ea phekolo:
1. Phekolo ea mouoane oa metsi ka holim'a metsi.Mouoane oa metsi o kopana le Fe holim'a giar ho etsa ntho e teteaneng Fe₃O₄.Fe₃O₄ e na le boima bo phahameng, bo ka eketsang ho hanyetsa ho apara le ho thatafala ha holim'a lisebelisoa.
2. Kalafo ea carburizing
Joalo ka kalafo ea carburizing ea likere tse tloaelehileng tse entsoeng ka mochini, carbonitriding le quenching hangata li sebelisoa ho ntlafatsa boima ba bokaholimo ba likere.