Izigaba Ezine Eziyisisekelo zenqubo ye-Tungsten Carbide Sintering

I-Tungsten carbide, eyaziwa nangokuthi i-cemented carbide, inezici zokuqina okuphezulu, amandla aphezulu, ukumelana nokugqokwa okuhle nokuqina, ukumelana nokushisa okuhle kakhulu, nokumelana nokugqwala. Futhi kuvame ukusetshenziselwa ukwenza amathuluzi okumba, amathuluzi okumba, amathuluzi okusika, izingxenye ezingagugi, insimbi iyafa, ama-bearings anemba, imibhobho, njll.

I-Sintering iyinqubo eyinhloko yokwenza imikhiqizo ye-tungsten carbide. Kunezigaba ezine eziyisisekelo zenqubo ye-tungsten carbide sintering.

1. Isiteji sangaphambi kwe-sintering (Ukususwa kwe-ejenti eyakhayo kanye nesiteji sangaphambi kwe-sintering)

Ukususwa kwe-ejenti yokwakha: Ngokukhuphuka kwezinga lokushisa lokuqala lokucwilisa, i-ejenti eyenza kancane kancane ibola noma ihwamuke, ngaleyo ndlela iqede isisekelo esine-sintered. Ngesikhathi esifanayo, i-ejenti yokwakha izokhuphula ikhabhoni kusisekelo se-sintered ngaphezulu noma ngaphansi, futhi inani lokukhuphuka kwekhabhoni lizohluka ngohlobo nenani le-ejenti yokwakha kanye nenqubo ye-sintering.

Ama-oxide ebusweni bempushana ayancishiswa: ekushiseni kwe-sintering, i-hydrogen inganciphisa ama-oxide e-cobalt ne-tungsten. Uma i-ejenti yokwakha isuswa endaweni engenalutho futhi ifakwe i-sintered, ukusabela kwe-carbon-oxygen ngeke kube namandla kakhulu. Njengoba ukucindezeleka kokuxhumana phakathi kwezinhlayiya ze-powder kuqedwa kancane kancane, i-powder yensimbi ebophezelayo izoqala ukubuyisela futhi ihlaziye kabusha, ubuso buzoqala ukusabalalisa, futhi amandla ahlangene azokhula ngokufanele.

Kulesi sigaba, izinga lokushisa lingaphansi kuka-800 ℃

2. Isigaba esiqinile se-sintering (800℃——izinga lokushisa le-eutectic)

800~1350C° usayizi wokusanhlamvu we-tungsten carbide powder ukhula ube mkhulu futhi uhlanganiswe ne-cobalt powder ukuze ube yi-eutectic.

Ezingeni lokushisa ngaphambi kokuvela kwesigaba soketshezi, ukusabela kwesigaba esiqinile kanye nokusabalalisa kuyaqiniswa, ukugeleza kwepulasitiki kuyathuthukiswa, futhi umzimba we-sintered uyancipha kakhulu.

3. Isigaba se-Liquid sintering stage (izinga lokushisa le-eutectic - izinga lokushisa le-sintering)

Ku-1400 ~ 1480C ° i-binder powder izoncibilika ibe uketshezi. Lapho isigaba se-liquid sivela kusisekelo esine-sintered, ukuncipha kuqedwa ngokushesha, kulandelwa ukuguqulwa kwe-crystallographic ukuze kwakhiwe isakhiwo esiyisisekelo kanye nesakhiwo se-alloy.

4. Isiteji sokupholisa ( Izinga lokushisa le-Sintering - izinga lokushisa legumbi)

Kulesi sigaba, ukwakheka kanye nokwakheka kwesigaba se-tungsten carbide kushintshile ngezimo zokupholisa ezihlukene. Lesi sici singasetshenziselwa ukushisa i-tungsten carbide ukuze kuthuthukiswe izakhiwo zayo ezingokomzimba nezomshini.

Uma unentshisekelo emikhiqizweni ye-tungsten carbide futhi ufuna ulwazi olwengeziwe nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma ngemeyili kwesokunxele, noma SITHUMELE IMEYILI ezansi nekhasi.