1.Ho hanyetsa kutu e ntle, e hanyetsanang le kutu ka sulfur dioxide, 60% hydrofluoric acid, acetic acid e nang le mahloriso a ka tlaase ho 80%, le 15% ho 65% sulfuric acid.Mocheso o phahameng o lumelletsoeng ke 140°C.
2.Easy ho phutha, forge kapa weld.Leha ho le joalo, e na le thepa e bonolo, matla a fokolang a mochine, matla a phahameng, le conductivity e tlaase ea mocheso.Haeba ho hlokahala, e lokela ho behoa ka liphaephe tsa tšepe ho eketsa khatello ea eona.Ha o e kenya, e lokela ho kenngoa ka har'a sekoahelo sa lepolanka, kapa e behoe ka har'a sekoti se entsoeng ka liphaephe tsa tšepe tse arohaneng kapa tšepe ea angle ho thibela ho holofala le ho theoha.