I-Sintering yindlela yokwelapha ukushisa esetshenziswa kumpushana ohlangene ukuze unikeze amandla nobuqotho.Izinga lokushisa elisetshenziselwa ukucwenga lingaphansi kwendawo yokuncibilika yengxenye enkulu ye-Powder Metallurgy material.

Ngemva kokuhlangana, izinhlayiya zempushana ezingomakhelwane zibanjiswa ndawonye ngamashisela abandayo, okunikeza ukuhlangana “amandla aluhlaza” anele okusingathwa.Ezingeni lokushisa elishisayo, izinqubo zokusabalalisa zenza izintamo zakhe futhi zikhule kulezi zindawo zokuthintana.

Kunezandulela ezimbili ezidingekayo ngaphambi kokuthi le "solid state sintering" yenzeke:
1.Ukususwa kwe-lubricant ecindezelayo ngokuhwamuka kanye nokushiswa komhwamuko
2.Ukunciphisa ama-oxide angaphezulu kusuka ezinhlayiyeni zempushana ku-compact.

Lezi zinyathelo kanye nenqubo yokucwilisa ngokwayo ngokuvamile ifinyelelwa esithandweni esisodwa, esiqhubekayo ngokukhetha okuhlakaniphile nokuklanywa komkhathi wesithando somlilo kanye nokusebenzisa iphrofayili yokushisa efanelekile kuso sonke isithando somlilo.

I-Sinter iyaqina

Izithando zomlilo ze-Sintering ziyatholakala ezingasebenzisa izilinganiso zokupholisa ezisheshisiwe endaweni yokupholisa futhi amabanga wezinto ezibonakalayo athuthukisiwe angaguqukela kuma-martensitic microstructures kulawa mazinga okupholisa.Le nqubo, kanye nokwelashwa okulandelayo kokushisa, yaziwa ngokuthi i-sintering harding, inqubo evele, eminyakeni yamuva nje, inezindlela ezihamba phambili zokuthuthukisa amandla e-sintered.

I-Transient liquid phase sintering

Ku-compact equkethe kuphela izinhlayiya zempushana yensimbi, inqubo ye-sintering yesimo esiqinile ingadala ukushwabana okuthile kwe-compact njengoba izintamo ezihlabayo zikhula.Kodwa-ke, umkhuba ojwayelekile ngezinto ezisansimbi ze-PM ukwenza isengezo sempushana yethusi ecolekileyo ukuze kwakhiwe isigaba soketshezi esidlulayo ngesikhathi sokucwiliswa.

Emazingeni okushisa ashisayo, ithusi liyancibilika bese lisakazeka ezinhlayiyeni ze-iron powder ezidala ukuvuvukala.Ngokukhetha ngokucophelela okuqukethwe kwethusi, kungenzeka ukulinganisa lokhu kuvuvukala ngokumelene nokuncipha kwemvelo kwe-iron powder skeleton futhi unikeze into engaguquki ngobukhulu ngesikhathi sokucwiliswa.Ukwengezwa kwethusi nakho kunikeza umphumela oqinile wokuqinisa isisombululo.

I-Permanent liquid phase sintering

Ezintweni ezithile, njengama-carbides asimende noma ama-hardmetals, kusetshenziswe indlela ye-sintering ehlanganisa ukukhiqizwa kwesigaba samanzi esihlala njalo.Lolu hlobo lwe-liquid phase sintering lubandakanya ukusetshenziswa kwesengezo kumpushana, esizoncibilika ngaphambi kwesigaba se-matrix futhi esizovame ukudala okuthiwa yisigaba sokuhlanganisa.Inqubo inezigaba ezintathu:

Ukuhlelwa kabusha
Njengoba uketshezi luncibilika, isenzo se-capillary sizodonsa uketshezi lube ezimbotsheni futhi sibangele ukuthi okusanhlamvu kuhlelwe kabusha kube ilungiselelo lokupakisha elivumayo.

Isixazululo-imvula
Ezindaweni lapho umfutho we-capillary uphezulu, ama-athomu azongena exazululweni abese ewa ezindaweni ezinamandla aphansi amakhemikhali lapho izinhlayiya zingasondelene noma zingathintani.Lokhu kubizwa ngokuthi i-contact flattening futhi kugxilisa isistimu ngendlela efana nokusatshalaliswa komngcele wezinhlamvu ku-solid state sintering.Ukuvuthwa kwe-Ostwald nakho kuzokwenzeka lapho izinhlayiya ezincane zizongena esixazululweni ngokukhethayo futhi zihle phezu kwezinhlayiya ezinkulu eziholela ekugxilweni.

Ukuminyana kokugcina
Ukuminyana kwenethiwekhi eqinile yamathambo, ukunyakaza koketshezi olusuka ezindaweni ezipakishwe kahle luye ezimbotsheni.Ukuze ukucwiliswa kwesigaba soketshezi unomphela kube okusebenzayo, isigaba esikhulu kufanele okungenani sincibilike kancane esigabeni soketshezi futhi isithasiselo “sokuhlanganisa” kufanele sincibilike ngaphambi kokuba noma yikuphi ukucwiliswa okukhulu kwenethiwekhi yezinhlayiya eziqinile kwenzeke, ngaphandle kwalokho ukuhlelwa kabusha kwezinhlamvu ngeke kwenzeke.