Inqubo yokwehliswa kwesipelingi yendabuko nezinkinga zayo ezikhona

Ukweqiwa kwendabuko kwendabuko ukwelashwa okungeziwe ihlukaniswe ngezigaba ezimbili ezilandelayo.

(1) Esigabeni sokulungiselela ukwenziwa kwe-spheroidization, insimbi ezokwakhiwa nge-spheroidized kanye ne-annealed iyashiswa ibe ngu-30-50 ° C ngaphezu kwephuzu elibucayi futhi ibanjelwe ihora eli-1 kuye kwele-2 ukuthola amandla, ukuze ama-carbides ancibilikiswe ku-austenite. Ngemuva kwalokho ipholile ngokushesha ibe ngaphansi kwephuzu elibucayi i-Ac ukuthola okusanhlamvu okuhle kwamakristalu nokucwenga ama-carbides ukwenza i-spheroidization elandelayo. Ukucwenga okusanhlamvu nokucwenga ama-carbides kudala izimo ze-spheroidization ebushelelezi, ngakho-ke lesi sigaba sibizwa ngokuthi isigaba sokulungiselela i-spheroidization. Imvamisa, isigaba sokulungiselela i-spheroidization siqala ngokushisa insimbi iye ku-850 ~ 900 ° C futhi siyibambe ngo-1 ~ 2h, okuthatha cishe amahora ayishumi esewonke.

(2) Esigabeni sokuphamba, insimbi ivuselelwa futhi ipholile ibe ngu-700 ~ 750 ° C futhi igcinwe cishe amahora ayi-10, ukuze ama-carbide acwengekile azokwakha ama-carbide ayindilinga ngokubumbana nokusakazeka, aqedele inqubo yokuphamba nokuqinisa.

Kusuka kunqubo engenhla ye-spheroidization, kungaphethwa ngokuthi insimbi ye-eutectoid nensimbi ye-hypereutectoid enokuqukethwe okuphezulu kwekhabhoni, ngaphansi kwesenzo sokushisa okuphezulu isikhathi eside, okokuqala kubangela uketshezi nokwehla komhlaba kwensimbi, okunciphisa ikhwalithi yendawo insimbi; Isikhathi spheroidization ukushisa ukulondolozwa kwandisa ukusetshenziswa kwamandla futhi kunciphisa ukusebenza kahle kokukhiqiza. Ngakho-ke, kunethemba lokuthi inqubo yokuncishiswa kwe-spheroidizing okusheshayo ingafundelwa ukunciphisa umjikelezo wokunciphisela okweqisayo futhi ithuthukise ikhwalithi yensimbi.