Chii chinangwa chekupinzwa kwemhangura muchikamu chePM, uye chinoitwa sei?

Zvikamu zvinopinzwa mhangura nekuda kwezvikonzero zvakawanda.Mimwe mibairo inodiwa mhedzisiro ndeye kuvandudzwa kwekusimba kwekusimba, kuoma, kukanganisa zvivakwa, uye ductility.Mhangura-inopinza zvikamu zvichavawo nepamusoro-soro.

Zvimwe zvikonzero izvo vatengi vangasarudze kupinza kwemhangura ndezvekuvandudza kupfeka kana kuvharira kuyerera kwemhepo / gasi kuburikidza nechimwe chinhu chine porous pane tembiricha iyo resin inogona kusashanda.Dzimwe nguva kupinza kwemhangura kunoshandiswa kusimudzira machining maitiro ePM simbi;mhangura inosiya kupera kwakatsetseka kwakagadzirwa.

Heino mashandiro anoita copper infiltration:

Chigadziko chechimiro chechikamu chine dhizaini inozivikanwa, iyo inoshandiswa kuona huwandu hwekuvhurika porosity.Nhamba yakayerwa yemhangura inosarudzwa inoenderana nehuwandu hweporosity inozadzwa.Mhangura inozadza porosity panguva yekunyunguduka (pakupisa kuri pamusoro pekunyunguduka kwemhangura) nekungoisa mhangura pamusoro pechikamu isati yanyunguduka.Iyo > 2000 ° F sintering tembiricha inobvumira kuti mhangura yakanyunguduka iyerere ichipinda muchikamu cheporosity kuburikidza necapillary chiito.Sintering inopedzwa pane inotakura (semuenzaniso ceramic ndiro) saka mhangura inogara pane chikamu.Kana chikamu chacho chatonhodzwa, mhangura inosimbiswa mukati mekugadzirisa.

Top Photo(kurudyi): Zvikamu zvakaunganidzwa nemhangura slugs zvakagadzirira kunyura.(Mufananidzo neAtlas Pressed Metals)

Pazasi Mufananidzo(kurudyi): Microstructure yechikamu chinoratidza kuti mhangura inopinda sei yakavhurika porosity.(Mufananidzo naDr. Craig Stringer - Atlas Pressed Metals)


Nguva yekutumira: Sep-07-2019