Amagama e-Hard Alloy(2)

I-Decarbonization

Ngemva kokucwilisa i-carbide enosimende, okuqukethwe kwekhabhoni akwanele.

Lapho umkhiqizo ukhishwa ikhabhoni, izicubu ziyashintsha zisuka ku-WC-Co ziye ku-W2CCo2 noma i-W3CCo3. Okuqukethwe kwekhabhoni okuhle kakhulu kwe-tungsten carbide ku-cemented carbide (WC) kungu-6.13% ngesisindo. Uma okuqukethwe kwekhabhoni kuphansi kakhulu, kuzoba nesakhiwo esisho ukuthi alinayo i-carbon emkhiqizweni. I-Decarburization inciphisa kakhulu amandla kasimende we-tungsten carbide futhi iyenze ibe brittle.

I-Carburization

Kubhekiselwa kokuqukethwe kwekhabhoni eyeqile ngemuva kokucwilisa i-carbide enosimende. Okuqukethwe kwekhabhoni okuhle kakhulu kwe-tungsten carbide ku-cemented carbide (WC) kungu-6.13% ngesisindo. Uma okuqukethwe kwekhabhoni kuphezulu kakhulu, kuzovela ukwakheka kwe-carburized kumkhiqizo. Kuzoba khona ukweqisa okukhulu kwekhabhoni yamahhala emkhiqizweni. Ikhabhoni yamahhala inciphisa kakhulu amandla nokumelana nokugqoka kwe-tungsten carbide. Izimbotshana zohlobo lwe-C ekubonweni kwesigaba zibonisa izinga le-carburization.

Ukuphoqwa

Amandla okucindezelayo amandla ayizibuthe ayinsalela akalwa ngokwenza uzibuthe ku-carbide enosimende ukuya endaweni egcwele bese ewukhipha uzibuthe. Kunobudlelwane obuqondile phakathi kobukhulu bezinhlayiyana ezimaphakathi zesigaba se-carbide esinesimende kanye nokuphoqa. Ukuqina kwesilinganiso sezinhlayiyana zesigaba esizibuthe, kulapho kuphakama inani lokuphoqelela.

Ukugcwala kwamagnetic

I-Cobalt (Co) inozibuthe, kuyilapho i-tungsten carbide (WC), i-titanium carbide (TiC), ne-tantalum carbide (TaC) ingezona uzibuthe. Ngakho-ke, ngokuqala ukulinganisa inani lamagnetic saturation ye-cobalt entweni bese uyiqhathanisa nenani elihambisanayo lesampula elimsulwa le-cobalt, njengoba ukugcwala kukazibuthe kuthintwa izakhi ze-alloying, izinga le-alloying lesigaba esiboshwe nge-cobalt lingatholwa. . Noma yiziphi izinguquko esigabeni sokuhlanganisa zingalinganiswa. Njengoba ikhabhoni idlala indima ebalulekile ekulawuleni ukwakheka, le ndlela ingasetshenziswa ukunquma ukuchezuka kokuqukethwe kwekhabhoni efanelekile. Amanani aphansi wokugcwaliswa kazibuthe akhombisa okuqukethwe kwekhabhoni ephansi namandla okukhipha i-carburization. Amanani aphezulu wokugcwala kazibuthe akhombisa ukuba khona kwekhabhoni yamahhala kanye ne-carburization.

I-Cobalt Pool

Ngemva kokucwilisa i-metallic cobalt (Co) binder kanye ne-tungsten carbide, i-cobalt eyeqile ingase yakheke, okuyisenzakalo esaziwa ngokuthi "i-cobalt pooling". Lokhu kungenxa yokuthi ngesikhathi senqubo ye-HIP (Pressure Sintering), izinga lokushisa le-sintering liphansi kakhulu futhi izinto ezibonakalayo zakha ukuminyana okwanele, noma ama-pores agcwele i-cobalt. Thola usayizi wechibi le-cobalt ngokuqhathanisa izithombe ze-metallographic. Ukuba khona kwechibi le-cobalt ku-carbide enosimende kuthinta ukumelana nokugqoka namandla ezinto ezibonakalayo.

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