1. Chrome plating ka holim'a metsi ho ntlafatsa ho itoanela;
2. Likoti tse hlephileng li kenngoa ka chromium ho ntlafatsa polokelo ea oli holim'a metsi le ho potlakisa ho kena;
3. E ngotsoe ka holim'a bokahare ho ntlafatsa elasticity;
4. Sebaka sa polokelo ea oli se fanoa ka holim'a bokantle ba lesale ho nolofatsa lubrication;
5. Sebaka se ka ntle sa lesale se koahetsoe ka koporo ho nolofatsa ho matha;
6. Molybdenum e fafatsoa ka holim'a bokantle ba lesale ho fokotsa ho khomarela le ho apara.

Kakaretso ka tsela e latelang:
Ntlafatsa khanyetso ea ho apara: chrome plating, nitriding
Ntlafatsa ts'ebetso ea ts'ebetso ea pele: ho roala koporo, phosphating, sulphurizing
Ho thibela ho roala sekhomaretsi: fafatsa molybdenum