Ukucisha nokushisa kwama-crankshafts
2020-01-16
Ukucisha inqubo nenjongo
I-workpiece ishiselwa kumazinga okushisa e-austenitizing isikhathi esithile bese ipholiswa ngenani elikhulu kunezinga lokupholisa elibalulekile ukuze kutholwe inqubo yokwelapha ukushisa kwesakhiwo se-martensite.
Ukuthuthukisa ubulukhuni obuphezulu nokumelana nokugqoka kwe-workpiece
Inqubo yokwehlisa izinga lokushisa eliphansi kanye nenjongo
Inqubo yokwelapha ukushisa lapho insimbi ecishiwe ishisa khona ku-250 ° C. bese ipholiswa phansi.
Ukuze ulondoloze ubulukhuni obuphezulu kanye nokugqoka ukumelana kwe-workpiece ecishiwe, nciphisa ukucindezeleka okusele kanye nokuqina ngesikhathi sokucisha.
Indlela yokuhlukanisa phakathi kwe-crankshaft ecishiwe futhi engacimi?
I-ayoni ihlangana namakhemikhali nomoya-mpilo osemoyeni emazingeni okushisa aphezulu ukuze ikhiqize i-iron trioxide emnyama. Lokhu kuhlukile kulokho esivame ukukubiza ngokuthi ukugqwala. Esivame ukukusho ngokugqwala ukuthi insimbi ihlangana nomoya-mpilo, amanzi, nezinye izinto ezisemoyeni ezingeni lokushisa elilingana negumbi ukuze yakhe (ingxenye eyinhloko yokugqwala) i-iron oxide, ebomvu.
I-ayoni ishiselwa nge-oxygen:
3Fe + 2O2 === Ukushisisa ==== Fe3O4
Insimbi igqwala emoyeni:
i-crankshaft engacishiwe
i-crankshaft ecishiwe
