Inqubo ye-Sintering Tungsten Carbide

Njengoba sonke sazi, i-tungsten carbide ingenye yezinto ezinzima kakhulu ezisetshenziswa embonini yesimanje. Ukwenza ukukhiqizwa kwe-tungsten carbide, kufanele ihlangabezane nezinqubo eziningi zezimboni, njengokuxuba impushana, ukugaya okumanzi, ukomisa isifutho, ukucindezela, ukucwilisa, nokuhlola ikhwalithi. Ngesikhathi se-sintering, umthamo we-carbide enosimende uzoncipha ngesigamu. Lesi sihloko ngesokucacisa ukuthi kwenzekeni nge-tungsten carbide ngesikhathi i-sintering.

Phakathi ne-sintering, kunezigaba ezine okufanele zihlangabezane ne-tungsten carbide. Kunjalo:

1. Ukususwa kwe-ejenti yokubumba kanye nesiteji sokushiswa kwangaphambili;

2. Isiteji esiqinile se-sintering;

3. Isiteji se-Liquid-sintering;

4. Isiteji sokupholisa.

1. Ukususwa kwe-ejenti yokubumba kanye nesiteji sokushiswa kwangaphambili;

Kule nqubo, izinga lokushisa kufanele lenyuke kancane kancane, futhi lesi sigaba senzeka ngaphansi kuka-1800 ℃. Njengoba izinga lokushisa likhula, umswakama, igesi, kanye nencibilikitho eyinsalela ku-tungsten carbide ecindezelwe kuyahwamuka kancane kancane. I-ejenti yokubumba izokwandisa okuqukethwe kwekhabhoni ye-sintering cemented carbide. Ku-sintering ehlukene, ukwanda kokuqukethwe kwe-carbide kuhlukile. Ukucindezeleka kokuxhumana phakathi kwezinhlayiya ze-powder nakho kuqedwa kancane kancane ngesikhathi sokwanda kwezinga lokushisa.

2. Isiteji esiqinile se-sintering

Njengoba izinga lokushisa likhuphuka kancane, i-sintering iyaqhubeka. Lesi sigaba senzeka phakathi kuka-1800 ℃ nezinga lokushisa le-eutectic. Izinga lokushisa elibizwa ngokuthi i-eutectic libhekisela ekushiseni okuphansi kakhulu okungase kube khona uketshezi kulolu hlelo. Lesi sigaba sizoqhubeka sisekelwe esigabeni sokugcina. Ukugeleza kwepulasitiki kuyanda futhi umzimba we-sintered uyancipha kakhulu. Kulo mzuzu, umthamo we-tungsten carbide uyancipha ngokusobala.

3. Isigaba samanzi se-sintering

Kulesi sigaba, izinga lokushisa liyakhuphuka lize lifinyelele izinga lokushisa eliphakeme kakhulu kwinqubo ye-sintering, izinga lokushisa le-sintering. Lapho isigaba se-liquid sivela ku-tungsten carbide, ukuncipha kuqeda ngokushesha. Ngenxa yokungezwani okungaphezulu kwesigaba se-liquid, izinhlayiya zempushana ziyasondelana, futhi ama-pores ezinhlayiyeni agcwaliswa kancane kancane ngesigaba se-liquid.

4. Isiteji sokupholisa

Ngemuva kokushisa, i-carbide enosimende ingasuswa esithandweni somlilo futhi ipholiswe ekamelweni lokushisa. Ezinye izimboni zizosebenzisa ukushisa kwemfucuza esithandweni somlilo ukuze kusetshenziswe ukushisa okushisayo. Kuleli qophelo, njengoba izinga lokushisa lehla, kwakhiwa i-microstructure yokugcina ye-alloy.

I-Sintering iyinqubo eqinile, futhi i-zzbetter ingakunikeza ikhwalithi ephezulu ye-tungsten carbide. Uma unentshisekelo emikhiqizweni ye-tungsten carbide futhi ufuna ulwazi olwengeziwe nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma nge-imeyili kwesokunxele, noma SITHUMELE IMEYILI ezansi nekhasi.