Khetha i-20Crmo, 42Crmo, 40CrNiMo alloy materials .Ukubumba, ukukhanda imishini, ukwelapha ukushisa, ukuqhunyiswa kwesibhamu, ukugaya nezinye izinqubo zokucubungula kusetshenziselwa ukuthuthukisa ukumelana ne-Abrasion kanye nomthelela wokumelana nemikhiqizo, futhi kwandise impilo yesevisi yemikhiqizo.