Inqubo yokukhiqiza yokufaka i-carbide

2024-01-04

Inqubo yokukhiqiza izindwani ze-carbide ezinosimende ayifani nokuphonsa noma insimbi, eyakhiwe ngokuncibilika kwensimbi bese ijova esikhunjeni, noma ukwakha ngokubumba, kodwa i-carbide powder (i-tungsten carbide powder, i-titanium carbide powder, i-tantalum carbide powder) ezokwenza kuphela ncibilika lapho ifinyelela ku-3000 °C noma ngaphezulu. impushana, njll.) ishisiswe ibe ngaphezu kuka-1,000 degrees Celsius ukuze ifakwe sinter. Ukwenza lesi sibopho se-carbide sibe namandla, i-cobalt powder isetshenziswa njenge-ejenti yokubopha. Ngaphansi kwesenzo sokushisa okuphezulu nokucindezela okukhulu, ukuhlobana phakathi kwe-carbide ne-cobalt powder kuzothuthukiswa, ukuze kube kancane kancane. Lesi simo sibizwa ngokuthi i-sintering. Ngenxa yokuthi kusetshenziswa impushana, le ndlela ibizwa ngokuthi i-powder metallurgy.

Ngokuya ngenqubo yokukhiqiza ehlukene yezinto ezifakwayo ze-carbide ezisimende, ingxenye enkulu yengxenye ngayinye yokufaka i-carbide enosimende ihlukile, kanye nokusebenza kokufakwa kwe-carbide okusasimende nakho kuhlukile.

Manufacturing process of carbide inserts

I-Sintering yenziwa ngemuva kokwenza. Okulandelayo iyona yonke inqubo yenqubo ye-sintering:

I-1) Cindezela i-tungsten carbide powder echotshoziwe kakhulu ne-cobalt powder ngokusho komumo odingekayo. Ngalesi sikhathi, izinhlayiya zensimbi zixhunywe komunye nomunye, kodwa inhlanganisela ayiqinile kakhulu, futhi izochotshozwa ngamandla amancane.

I-2) Njengoba izinga lokushisa lezinhlayiya ze-powder block ezakhiwe landa, izinga lokuxhuma liqiniswa kancane kancane. Ku-700-800 ° C, inhlanganisela yezinhlayiya isencane kakhulu, futhi kusenezikhala eziningi phakathi kwezinhlayiya, ezingabonakala yonke indawo. Lawa ma-voids abizwa ngokuthi ama-voids.

I-3) Lapho izinga lokushisa lokushisa likhuphuka lifika ku-900 ~ 1000 ° C, i-voids phakathi kwezinhlayiya iyancipha, ingxenye emnyama eqondile icishe inyamalale, futhi ingxenye enkulu emnyama kuphela esele.

4) Lapho izinga lokushisa lisondela kancane kancane ku-1100 ~ 1300 ° C (okungukuthi, izinga lokushisa elivamile le-sintering), ama-voids ayancipha ngokwengeziwe, futhi ukubopha phakathi kwezinhlayiya kuba namandla.

5) Lapho inqubo ye-sintering isiqediwe, izinhlayiya ze-tungsten carbide ku-blade ziyi-polygons encane, futhi into emhlophe ingabonakala nxazonke zazo, okuyi-cobalt. Isakhiwo se-sintered blade sisekelwe ku-cobalt futhi simbozwe izinhlayiya ze-tungsten carbide. Ubukhulu nokuma kwezinhlayiya kanye nobukhulu besendlalelo se-cobalt buyahluka kakhulu ezindaweni zokufaka i-carbide.