sei sintering process muupfu metallurgy

Hi, shamwari! Isu tiri nyanzvivagadziri vesimbi dzehupfu muChina.Tine zvakawandapoda metallurgy sintering yezvikamu.Tevere ini ndichakuudza nzira yekuisa mukati muupfu metallurgy!

 Sintering process muupfu metallurgyinosangana neyakatevedzana yekuchinja kwemuviri uye kemikari, senge mvura kana organic evaporation kana volatilization, adsorption gasi kuchenesa, kubviswa kwekushushikana, iyo poda particle surface oxide kuderedza, intergranular material migration, recrystallization uye kukura kwezviyo, nokudaro inoita kuti crystal interface pakati pezvikamu zviwedzere. , pore inodzikira kana kutonyangarika.Kana chikamu chemvura chikaonekwa, kupera uye kunaya kwechikamu chakasimba kuchaitika zvakare.Aya maitiro haana miganhu yakajeka kune mumwe nemumwe, asi anopindirana uye anopesvedzerana.Pamusoro peimwe sintering mumetallurgy, kuita kwezvakagadzirwa zvese zvakagadzirwa nehupfu metallurgy kwakaoma.Muna 1942, German GF Schutig akashandisa nzira dzekuongorora dzemuviri uye dzemakemikari kuyera pesvedzero yekupisa tembiricha pamagetsi emagetsi, solubility, density, microstructure, mechanical properties of sintered body, uye akawana kuti sintering inzira yakaoma zvikuru.Muna 1949, GCKuczynski wekuUnited States akadzidza kunyungudutswa kwemabhora esimbi nemarata esimbi uye akatenda kuti kutama kwezvinhu panguva yekunyungudika kwainyanya kuitwa nekupararira.Basa ravo rakasundidzira chidzidzo che sintering theory kune imwe nhanho.Yakawanda yeinotevera basa rekutsvagisa yakanangana nemaitiro ekutama kwezvinhu panguva yekupisa.

Zvinowanzotendwa kuti pane nzira shanu dzekutama kwezvinhu panguva yekunyungudika: kuyerera kana kuyerera kwepurasitiki, kubuda kwemhepo uye condensation, kupararira kwevhoriyamu, kupararira kwemuganho wezviyo, uye kupararira kwepasi.Kana maviri spherical particles arikusangana akasiiwa, kukura kwekusangana kwemutsipa radius X kunogona kunge kune hukama neiyo sintering nguva t sezvinotevera:

Sintering process Sintering inofanirwa kuitwa muchoto chinopisa chine mhepo inodzivirira kudzivirira oxidation yemuviri wakanyoroveswa kana kwakashata kuita kemikari.Kune akawanda marudzi emavira ekupisa, anogona kushandiswa sezvitubu zvekupisa senge gasi rechisikigo, gasi, oiri uye magetsi.Magetsi ekupisa choto ane mari uye ari nyore, ari nyore kugadzirisa uye kutonga.Iyo inowanzoshandiswa inodzivirira mhepo ndeye vacuum, argon, helium, nitrogen, carbon dioxide uye mamwe magasi anert uye hydrogen, kuora kweammonia, carbon monoxide, kutendeuka kwegasi rechisikigo uye mamwe magasi ekuderedza.

Kuti uwedzere kuvandudza mashandiro ezvigadzirwa zve sintered uye saizi uye kurongeka kwechimiro, zvinowanzodikanwa kuita kuumbwa, kupedzisa, kudzvanya, kunyudzwa kwemafuta, kugadzirwa kwemagetsi, kurapwa kwekupisa uye mamwe maitiro anotevera.

Injection molding process inoyerera

 

sintering process muupfu metallurgy


Nguva yekutumira: Jul-29-2022