Ukwelashwa kokushisaingenye yezinqubo ezibalulekile ezibalulekile ekusunguleni inqubo yokukhiqiza ukufa, edlala indima ebalulekile empilweni ye-die. Ngokuvumelana nezidingo ezithileubuchwepheshe bokuqamba, ubuchwepheshe bokwelapha ukushisa buklanyelwe ukwenza amandla (ukuqina) kwesikhunta ukufanisa kahle ngokuqina, ukuqina kobuso bomzimba wesikhunta kanye nesikhunta sesikhunta sinengqondo futhi sifana, okusanhlamvu kuhle futhi kufana, akukho i-oxidation kanye ne-decarburization, ukunciphisa ukucindezeleka okusele kanye nokuguqulwa, okungathuthukisa impilo nokuzinza kwesikhunta. Ukusetshenziswa kobuchwepheshe obusha bokwelapha ukushisa kungathinta amandla wezinto ezibonakalayo futhi kuthuthukise kakhulu impilo yesikhunta ngezindleko ezincane. Isibonelo, nge-high-carbonukuganga okubandayo kuyafa, ukwamukela ukucisha izinga lokushisa eliphansi ukuze uthole i-lat Martensite eyengeziwe kungathuthukisa ukuqina, kunciphise ukubola kwesikhunta kanye nokucisha i-crack, ngaleyo ndlela kuthuthukise impilo yesikhunta. Ukwelashwa kokushisa kwe-vacuum kunezinzuzo zokungabi ne-oxidation, i-decarburization, i-degassing, ukushisa okufanayo kanye nokuguqulwa okuncane, okubuye kube nenzuzo ukuthuthukisa impilo yokufa.

Umphumela wokwelashwa okungaphezulu ekuqiniseni ubuso besikhunta kanye nokwandisa impilo yesikhunta akuyona nje ephawulekayo, kodwa futhi nezindleko eziphansi. Isetshenzisiwe futhi inezinhlelo zokusebenza ezingase zibe khona zesikhunta sokuqiniswa kwendlela yokwelashwa kwe-bore surface ine-deformation (i-shot peening, extrusion and rolling, njll.) iqinisa, ukuqinisa ukuguqulwa kwesigaba sendawo, ukuqinisa ukunwetshwa kobuso nokuqinisa ukufakwa kwe-ion, ukufakwa komphunga ngokomzimba kanye nobuchwepheshe bokuguqula indawo efana ne-membrane deposition kanye nobuchwepheshe be-electrochemical deposition (i-electrochemical deposition) ezishisayo zokufafaza ezinengilazi.

kusuka ku:168 froging