Ukungena Inqubo ye-powder metallurgy

I-powder compact ithintwa ngensimbi ewuketshezi noma icwiliswe ensimbi ewuketshezi, ama-pores ku-compact agcwaliswa ngensimbi ewuketshezi, futhi izinto ezihlangene noma izingxenye zitholakala ngokupholisa phansi.Le nqubo ibizwa ngokuthi ukucwiliswa emanzini.Inqubo yokucwiliswa incike ensimbi encibilikisiwe yangaphandle ukuze imanzise umzimba oyimpuphu onezimbotshana.Ngaphansi kwesenzo samandla e-capillary, insimbi ewuketshezi igeleza eduze kwama-pores phakathi kwezinhlayiya noma ama-pores ngaphakathi kwezinhlayiya kuze kube yilapho ama-pores agcwele ngokuphelele.

Izinzuzo zokungeniswa kwethusi kwe-powder metallurgy iron-based materials:
1. Thuthukisa izakhiwo zemishini;

2. Thuthukisa ukusebenza kwe-electroplating;

3. Thuthukisa ukusebenza kwe-brazing;

4. Thuthukisa ukusebenza kwemishini;

5. Thuthukisa ukusebenza kukagesi kanye ne-thermal;

6. Kulula ukulawula ubukhulu bezingxenye;

7. Yiba nokusebenza okuhle kokuvalwa kwengcindezi;

8. Izingxenye eziningi zingahlanganiswa;

9. Thuthukisa izinga lokucisha;

10. Ukungena kwendawo kwezingxenye ezikhethekile ezidinga izakhiwo eziqiniswayo neziqinile.

Izici zethonya:

1. Ukuminyana kwamathambo
Njengoba ukuminyana kwamathambo kukhula, amandla ensimbi ene-sintered efakwe ngethusi akhuphuka kakhulu, futhi ukuqina nakho kuyanda.Lokhu kungenxa yokwanda kwe-skeleton density, ukwanda kwenani le-pearlite, kanye nokuqukethwe kwethusi okuncane kakhulu.Mayelana nezindleko, ukukhetha ukuminyana okuphezulu kwamathambo kunganciphisa okuqukethwe kwethusi, ngaleyo ndlela kuthuthukise izinzuzo zezomnotho.

2. Engeza isici Sn
Ukwengezwa kwesici sephoyinti elincibilikayo eliphansi Sn kunenzuzo ukukhulisa ukuminyana namandla ensimbi ene-copper-infiltrated sintered.Kusukela kumdwebo wesigaba se-Cu-Sn alloy, kungabonakala ukuthi ama-alloys ethusi aqukethe i-Sn anezinga lokushisa eliphansi lokwakheka kwesigaba soketshezi, elingakhuthaza ukungena okubushelelezi kwama-alloys ethusi.

3. Izinga lokushisa
Njengoba izinga lokushisa likhuphuka, izinga lokukhula okusanhlamvu nalo liyakhula, okulimazayo ekuthuthukiseni amandla.Ngakho-ke, ukungena kwe-sintering efanele kanye nesikhathi sokubamba kufanele kukhethwe ngaphansi kwesisekelo sokuqinisekisa i-alloying ephelele kanye ne-homogenization ye-Fe-C, ukungena okugcwele kwe-Cu, kanye nokuqiniswa kwesisombululo esiqinile esigcwele se-Fe-Cu.