Fektheri e rekisang mahare a pola

Mohoma o bolela karolo ea tšepe ea mantlha ea lisebelisoa tsa temo tsa setso tse etsang mosebetsi oa ho lema mobu. O entsoe ka mohoma (bakeng sa ho roba mobu) le 'mele oa mohoma (bakeng sa ho reteleha mobu), 'me o bapala karolo ea bohlokoa temong ka ho roba mobu le ho reteleha mobu.
Mehleng ea pele, lihlahisoa li ne li entsoe haholo-holo ka tšepe e entsoeng ka tšepe (joalo ka mehoma ea khale ea lilemo tsa bo-1970), e nang le bokaholimo bo lefifi bo lefifi. Moralo oa mehoma ea khutlotharo o ntlafalitse bokhoni ba ho roba mobu. Lihlahisoa tsa sejoale-joale li ntlafalitsoe ho sebelisa lisebelisoa tsa motsoako tse kang tšepe ea manganese (65Mn) le tšepe ea boron, tse nang le boima ba 45-50 HRC kamora kalafo ea mocheso, e leng se ntlafatsang haholo ho hanyetsa ho tsofala.
Mohoma le 'mele oa mohoma li sebelisa sebopeho se arohaneng, se lumellang ho nkeloa sebaka ke o ikemetseng (joalo ka letoto la Jeremane la Rabe SUPER). Bophara ba ho lema bo fetoloang ke lisenthimithara tse 33-60, bo loketse mefuta e fapaneng ea mobu, ho kenyeletsoa le mobu oa lehlabathe le letsopa.