Jawiga Sintering ee MIM

Jawiga inta lagu guda jiro habka sintering waa barta muhiimka ah ee tignoolajiyada MIM, waxay go'aamisaa natiijada sinjiga iyo waxqabadka kama dambaysta ah ee alaabta.Maanta, waxaan ka hadli doonaa waxa ku saabsan, Atmosphere of Sintering.

Doorka jawiga isku dhafka ah:

1) Aagga dewaxing, ka saar saliidaha ee jidhka cagaaran;

2) Yaree oksaydhyada oo ka hortagga oksaydhka;

3) Ka fogow carburization alaabta iyo carburization;

4) Ka fogow oksaydhka alaabta ee aagga qaboojinta;

5) Ku ilaali cadaadiska wanaagsan ee foornada;

6) Ilaali joogtaynta natiijooyinka sintering.

Kala-soocidda jawiga isku-dhafka ah:

1) Jawiga Oxidization: Agabka saafiga ah ama Ag-oxide walxaha isku dhafan iyo isku-dhafka dhoobada oksaydhka: Hawada;

2) Jawi-dhimista: Jawi-guud ee ka kooban qaybaha H2 ama CO: Atmosfyada Hydrogen ee sibidhka carbide sintered, Hydrogen-ka kooban jawiga birta ku salaysan iyo copper-ku salaysan qaybaha birta ku salaysan (ammooniya decomposition gaaska);

3) Jawi dhexdhexaad ah ama dhexdhexaad ah: Ar, He, N2, Vacuum;

4) Carburizing jawi: waxa ku jira qaybo sare oo sababa carburization ee jidhka sintered, sida CO, CH4, iyo Hydrocarbon gases;

5) Jawiga ku salaysan Nitrojiin: Iyada oo ay ku jirto maadada nitrogen-ku saraysa ee jawiga isku xidha: 10% H2+N2.

Gaaska Dib-u-habaynta:

Isticmaalka gaasta hydrocarbon (gaaska dabiiciga ah, gaasta batroolka, gaaska foornada kookaha) sida alaabta ceeriin, isticmaalka hawada ama uumiga biyaha si looga falceliyo heerkul sare, iyo natiijada H2, CO, CO2, iyo N2.In yar oo gaas isku dhafan oo ah CH4 iyo H2O.

Gaaska Exothermic:

Marka la diyaarinayo gaaska dib-u-habaynta, gaaska alaabta ceeriin iyo hawadu waxay soo maraan beddelaha qayb ahaan.Haddii saamiga hawada iyo gaasta alaabta ceeriin uu sarreeyo, kulaylka la sii daayo inta lagu jiro falcelinta ayaa ku filan si loo ilaaliyo heerkulka falcelinta beddelka, iyada oo aan loo baahnayn dibadda kuleyliyaha reactor, gaaska beddelka ee ka dhashay.

Gaaska Endothermic:

Marka la diyaarinayo gaaska dib loo habeeyay, haddii saamiga hawada iyo gaaska cayriin uu hooseeyo, kulaylka la sii daayo inta lagu jiro fal-celinta kuma filna in lagu ilaaliyo heerkulka falcelinta ee dib-u-habeeeyaha, iyo reactor wuxuu u baahan yahay in la keeno kulayl dibadda ah.Gaaska dib loo habeeyay ee ka dhashay waxaa loo yaqaan Gaaska Endothermic.

TheKaarboon kaarboonka jawigawaa qiyaasta kaarboonka ee jawiga, taas oo u dhiganta kaarboonka ku jira maaddada marka jawiga iyo walxaha sinteed ee leh kaarboon gaar ah ay gaaraan dheelitirnaanta falcelinta (carburization, no decarburization) heerkul gaar ah.

IyoJawi Kaarboon Kaarboon ah oo La Xakameyn karowaa ereyga guud ee dhexdhexaadiyaha gaaska ee diyaarsan ee lagu soo galiyay nidaamka sintayn si loo xakameeyo ama loo hagaajiyo kaarboonka birta sintay.

Furayaasha lagu xakameynayo qadarka CO2 iyo H2Ojawiga:

1) Xakamaynta heerka qiyaasta H2O

Barta sayaxa: Heerkulka uumiga biyaha ee jawiga uu bilaabo inuu isku ururiyo ceeryaamo hoos yimaada cadaadiska jawiga caadiga ah.Inta badan biyaha ku jira jawiga, ayaa sareeysa barta sayaxa.Barta sayaxa waxa lagu qiyaasi karaa mitirka barta sayaxa: cabbirka nuugista biyaha iyadoo la isticmaalayo LiCI.

2) Xakamee xadiga CO2 waxaana lagu cabiraa falanqeeyaha nuugista infrared.