Ukugeleza kwenqubo yokufaka i-carbide sintering

Ukucutshungulwa kwei-carbide enosimendei-liquid phase sintering, okungukuthi, yenziwa ngaphansi kwesimo sokuthi isigaba sokubopha sisesigabeni se-liquid.I-compact ibaselwa ku-1350C-1600C esithandweni somlilo.Ukuncipha komugqa kwe-compact ngesikhathi sokucwilisa cishe ku-18%, futhi ukuncipha kwevolumu cishe ku-50%.Ukuncipha okuqondile kuncike kusayizi wezinhlayiyana ze-tungsten carbide powder kanye nokwakheka kwei-carbide enosimende.

Ukucutshungulwa kwei-carbide enosimendekuyinqubo eyinkimbinkimbi engokoqobo namakhemikhali, ehlanganisa ukususwa kwe-plasticizer, ukuchithwa kwegassing, ukucwiliswa kwesigaba esiqinile, i-liquid phase sintering, i-alloying, ukuminyana, ukuncibilika kanye nemvula, njll. I-compact yenza imikhiqizo enokwakheka kwamakhemikhali okuthile, isakhiwo senhlangano, ukusebenza kanye nesimo nosayizi. ngaphansi kwezimo ezithile ze-sintering.Lezi zimo zenqubo ziyahlukahluka kakhulu kuye ngamadivaysi e-sintering ahlukene.

I-Carbidei-vacuum sintering inqubo yokucwilisa ngaphansi kuka-1atm (1atm=101325Pa).I-Sintering ngaphansi kwezimo ze-vacuum kunciphisa kakhulu isithiyo sokuminyana ngegesi ye-adsorbed endaweni eyimpushana kanye negesi ezimbotsheni ezivaliwe, okuhambisana nenqubo yokusabalalisa nokuminyana, futhi kugwema ukusabela phakathi kwensimbi nezinto ezithile emkhathini phakathi nenqubo yokucwilisa.Ingathuthukisa kakhulu ukumanzisa kwesigaba se-liquid bonding kanye nesigaba esiqinile, kodwa kufanele kuthathwe ukunakekelwa ukuze kuvinjelwe ukulahleka kokuhwamuka kwe-cobalt phakathi ne-vacuum sintering.I-vacuum sintering ingahlukaniswa ngezigaba ezine, okuyisiteji sokususa i-plasticizer, isiteji sangaphambi kwe-sintering,i-tungsten carbidehigh-temperature sintering isigaba, kanye nesiteji sokupholisa.