Ukuthuthukiswa kanye nokukhiqizwa kwe-nonmagnetic hard alloy materials kuwukubonakaliswa okubalulekile kwezinto ezintsha eziqinile ze-alloy. I-Hard alloy yenziwa ngokufaka i-refractory metal carbides yamaqembu e-IV A, VA, kanye ne-VI A kuthebula lezinto zezikhathi (njenge-tungsten carbide WC), kanye nensimbi yoguquko yeqembu lensimbi (cobalt Co, nickel Ni, iron Fe) njengesigaba sokuhlanganisa ngokusebenzisa imboni ye-powder metallurgy. I-tungsten carbide engenhla ayinamagnetic, kuyilapho i-Fe, i-Co, ne-Ni zonke zingazibuthe. Ukusebenzisa i-Ni njengesibophezelo kuyisimo esidingekayo sokukhiqiza ama-alloys angenamagnetic.
Kunezindlela ezilandelayo zokuthola i-WC Ni series nonmagnetic hard alloys:1. Lawula ngokuqinile okuqukethwe kwekhabhoni
Njenge-WC Co ingxubevange, okuqukethwe kwekhabhoni kuyisici esiyinhloko esithinta umthamo wesixazululo esiqinile se-W esigabeni sokubopha se-WC Ni ingxubevange. Okusho ukuthi, ukuncipha kwekhabhoni yesigaba se-carbon compound ku-alloy, amandla esixazululo esiqinile se-W esigabeni sokubopha i-Ni, okunobubanzi obuhlukahlukene obungaba ngu-10-31%. Lapho isixazululo esiqinile sika-W esigabeni esihlanganisiwe se-Ni sidlula u-17%, ingxubevange iba demagnetized. Ingqikithi yale ndlela ukuthola ama-alloys aqinile angenazibuthe ngokunciphisa okuqukethwe kwekhabhoni nokwandisa isisombululo esiqinile sika-W esigabeni sokubopha. Ngokwenza njalo, i-WC powder enokuqukethwe kwekhabhoni ephansi kunokuqukethwe kwekhabhoni ye-theoretical ivame ukusetshenziswa, noma i-W powder yengezwe kumxube ukuze kuzuzwe umgomo wokukhiqiza ama-alloys e-low-carbon. Kodwa-ke, kunzima kakhulu ukukhiqiza ama-alloys angenamagnetic kuphela ngokulawula okuqukethwe kwekhabhoni.
2. Engeza i-chromium Cr, i-molybdenum Mo, i-tantalum Ta
Ingxubevange yekhabhoni engu-WC-10% Ni (wt% ngesisindo) ibonisa i-ferromagnetism ekamelweni lokushisa. Uma ngaphezulu kuka-0.5% Cr, Mo, kanye no-1% Ta engezwe ngendlela yensimbi, ingxubevange yekhabhoni ephezulu ingashintsha isuke ku-ferromagnetism iye kokungewona uzibuthe. Ngokungeza i-Cr, izici kazibuthe ze-alloy zizimele kokuqukethwe kwekhabhoni, futhi i-Cr ingumphumela wesamba esikhulu sesixazululo esiqinile esigabeni sokubopha i-alloy, njenge-W. I-alloy ene-Mo ne-Ta ingashintsha kuphela ibe yi-alloy ingxubevange engeyona-magnetic kokuqukethwe okuthile kwekhabhoni. Ngenxa yesisombululo esiqinile esiphansi se-Mo no-Ta esigabeni sokubopha, iningi lazo lithwebula kuphela ikhabhoni ku-WC ukwenza ama-carbide ahambisanayo noma izixazululo eziqinile ze-carbide. Ngenxa yalokho, ukwakheka kwengxubevange kuyashintsha kuya ohlangothini lwekhabhoni ephansi, okuholela ekwandeni kwesixazululo esiqinile sika-W esigabeni sokubopha. Indlela yokwengeza i-Mo ne-Ta ukuthola ingxubevange engeyona i-magnetic ngokunciphisa okuqukethwe kwekhabhoni. Nakuba kungelula ukulawula njengokwengeza i-Cr, kulula kakhulu ukulawula okuqukethwe kwekhabhoni kune-WC-10% Ni alloy ehlanzekile. Ibanga lokuqukethwe kwekhabhoni likhulisiwe lisuka ku-5.8-5.95% laya ku-5.8-6.05%.
I-imeyili:oiltools14@welongpost.com
Thintana: Grace Ma
Isikhathi sokuthumela: Oct-09-2023
