Iibhola ezisemgangathweni zentsimbi ezinomxholo wekhabhoni kunye ne-chromium zikhethiwe kwaye zaqina ukuze zimelane noxinzelelo olunzima phakathi kwezinto ezijikelezayo kunye namakhonkco okuthwala.
I-Carbonitriding kumakhonkco angaphakathi nangaphandle yinkqubo esisiseko yokuqina kubathengisi abaninzi be-TPI bebhola. Ngolu nyango lukhethekileyo lobushushu, ubulukhuni kumphezulu wendlela yomdyarho buyanda; okunciphisa ukunxiba ngokufanelekileyo.
Intsimbi ye-Ultra-ecocekileyo ifumaneka kwezinye zeemveliso ze-TPI ezisemgangathweni zebhola ngoku, ukuxhathisa okuphezulu kokunxiba kufunyenwe ngokufanelekileyo. Ekubeni ukudinwa koqhagamshelwano kuhlala kubangelwa kukufakwa okuqinileyo okungeyontsimbi, iibheringi kule mihla zifuna amanqanaba akhethekileyo okucoceka.