Isigama seHard Alloy(2)

I-Decarbonization

Emva kokutshiza i-carbide ene-cemented, umxholo wekhabhoni awunakwanela.

Xa imveliso i-decarbonized, i-tissue iyatshintsha ukusuka kwi-WC-Co ukuya kwi-W2CCo2 okanye i-W3CCo3. Umxholo ofanelekileyo wekhabhoni we-tungsten carbide kwi-cemented carbide (WC) yi-6.13% ngobunzima. Xa umxholo wekhabhoni uphantsi kakhulu, kuya kubakho i-carbon-deficient structure kwimveliso. I-Decarburization inciphisa kakhulu amandla e-tungsten carbide sement kwaye iyenze ibe brittle ngakumbi.

Carburization

Ibhekisa kumxholo wekhabhoni ogqithileyo emva kokucoca i-carbide enesamente. Umxholo ofanelekileyo wekhabhoni we-tungsten carbide kwi-cemented carbide (WC) yi-6.13% ngobunzima. Xa umxholo wekhabhoni uphezulu kakhulu, i-carburized structure echazweyo iya kubonakala kwimveliso. Kuya kubakho ukugqithisa okukhulu kwekhabhoni yamahhala kwimveliso. Ikhabhoni yasimahla inciphisa kakhulu amandla kunye nokumelana nokunxiba kwe-tungsten carbide. I-C-type pores kwi-phase-detection ibonisa iqondo le-carburization.

Ukunyanzeliswa

Amandla okunyanzeliswa yintsalela yamandla emagnethi alinganiswa ngokwenza imagnethi imathiriyeli yemagnethi ekwikhabhide enesamente ukuya kwimo egcweleyo kwaye emva koko ikhuphe uzibuthe. Kukho ubudlelwane obuthe ngqo phakathi komlinganiselo we-particle ye-cemented phase carbide kunye nokunyanzeliswa. I-finer the average particle size of the magnetized phase, iphezulu ixabiso lokunyanzeliswa.

Ukugcwala kwemagneti

I-Cobalt (Co) imagnetic, ngelixa i-tungsten carbide (WC), i-titanium carbide (i-TiC), kunye ne-tantalum carbide (i-TaC) i-non-magnetic. Ke ngoko, ngokuqala ukulinganisa ixabiso lemagnethi lokugcwala kwecobalt kwinto kwaye emva koko uyithelekise nexabiso elihambelanayo lesampulu ecocekileyo yecobalt, kuba ukugcwala kwamagnetic kuchatshazelwa zizinto zealloying, inqanaba lokudityaniswa kwesigaba esibotshwe kwi-cobalt sinokufumaneka. . Naluphi na utshintsho kwisigaba sokubopha lunokulinganiswa. Ekubeni i-carbon idlala indima ebalulekileyo ekulawuleni ukubunjwa, le ndlela ingasetyenziselwa ukumisela ukuphambuka kumxholo wekhabhoni efanelekileyo. Amaxabiso asezantsi e-magnetic saturation abonisa umxholo wekhabhoni ephantsi kunye nokubakho kwe-decarburization. Amaxabiso aphakamileyo amagnetic saturation abonisa ubukho bekhabhoni yasimahla kunye ne-carburization.

Ichibi leCobalt

Emva kokuntywila i-cobalt yensimbi (Co) binder kunye ne-tungsten carbide, i-cobalt engaphezulu inokwakheka, into leyo eyaziwa ngokuba yi "cobalt pooling". Oku kubangelwa kukuba ngexesha le-HIP (i-Pressure Sintering) inkqubo, ukushisa kwe-sintering kuphantsi kakhulu kwaye izinto eziphathekayo zenza ubuninzi obunganelanga, okanye iipores zizaliswe nge-cobalt. Qinisekisa ubungakanani bechibi le-cobalt ngokuthelekisa iifoto ze-metallographic. Ubukho be-cobalt pool kwi-carbide ene-cemented buchaphazela ukuxhatshazwa kokugqoka kunye namandla ezinto eziphathekayo.

Ukuba unomdla kwiimveliso ze-tungsten carbide kwaye ufuna ulwazi oluthe kratya kunye neenkcukacha, ungaQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ekhohlo, okanye SITHUMELE MAIL emazantsi ephepha.