Emkhakheni we-metallurgy, umlando wokukhiqiza we-Silicon carbide crucible esetshenziselwa ukuncibilikisa izinsimbi ezingenayo insimbi ungalandelelwa emuva kuma-1930s. Inqubo yayo eyinkimbinkimbi ihlanganisa ukuchotshozwa kwempahla eluhlaza, ukuhlanganisa, ukuphotha ngesandla noma ukwenza ama-roll, ukomisa, ukudubula, ukugcoba amafutha kanye nokuvimbela umswakama. Ingane...
Funda kabanzi