Sebenzisa ithuluzi lokulinganisa ubukhulu ukukala ubukhulu be-tungsten ungqimba (ubukhulu be-tungsten Carbide ungqimba ukuze ube ngu-0.06-0.08)
Sebenzisa imitha ebushelelezi ukukala ukuqedwa okungaphezulu kwe-roll roll (izidingo zokuqedwa komhlaba ≤ Ra0.4)
Sebenzisa umhloli we-leeb hardness test ukukala ubulukhuni (ubulukhuni be-roll surce matrix buyadingeka ukuba ngaphezulu kwe-HRC57)