Umoya weSintering kwiMIM

Umoya ngexesha lenkqubo ye-sintering yeyona nto iphambili kwitekhnoloji ye-MIM, ithatha isigqibo malunga nesiphumo se-sintering kunye nokusebenza kokugqibela kweemveliso.Namhlanje, siza kuthetha ngayo, i-Atmosphere ye-Sintering.

Indima yomoya we-sintering:

1) Indawo ye-Dewaxing, susa i-lubricant kumzimba oluhlaza;

2) Ukunciphisa i-oxides kunye nokuthintela i-oxidation;

3) Gwema ukuchithwa kwemveliso kunye ne-carburization;

4) Gwema i-oxidation yeemveliso kwindawo yokupholisa;

5) Gcina uxinzelelo oluhle kwisithando somlilo;

6) Gcina ukuhambelana kweziphumo ze-sintering.

Ulwahlulo lomoya we-sintering:

1) Umoya we-oxidizing: I-Ag ecocekileyo okanye i-Ag-oxide yezixhobo ezidibeneyo kunye ne-sintering ye-oxide ceramics: Umoya;

2) Umoya wokunciphisa: I-Sintering atmosphere equkethe i-H2 okanye i-CO components: I-Hydrogen atmosphere ye-cemented carbide sintering, i-Hydrogen-containing atmosphere ye-iron-based kunye ne-copper-based metallurgy parts (igesi yokubola i-ammonia);

3) Imoya engathathi hlangothi okanye engathathi hlangothi: Ar, He, N2, Vacuum;

I-4) I-Carburizing atmosphere: iqulethe izinto eziphezulu ezibangela i-carburization ye-sintered body, njenge-CO, i-CH4, kunye neegesi ze-Hydrocarbon;

5) Umoya osekelwe kwi-nitrogen: Ngomxholo we-nitrogen ophezulu we-sintering atmosphere: 10% H2+N2.

IGesi yoLungiso:

Ukusebenzisa igesi ye-hydrocarbon (igesi yendalo, igesi yepetroleum, igesi ye-oven ye-coke) njengezinto eziluhlaza, usebenzisa umoya okanye umphunga wamanzi ukusabela kubushushu obuphezulu, kunye nesiphumo se-H2, CO, CO2, kunye ne-N2.I-aunt encinci yegesi edibeneyo ye-CH4 kunye ne-H2O.

Irhasi ephuma ngaphandle:

Xa ulungiselela igesi yokuguqula, igesi ekrwada kunye nomoya udlula kwi-converter ngomlinganiselo othile.Ukuba umlinganiselo womoya kwigesi ekrwada uphezulu, ubushushu obukhutshwe ngexesha lokusabela bukwanele ukugcina ubushushu bokusabela kwisiguquli, ngaphandle kwemfuneko yangaphandle kwi-reactor yokufudumeza, i-gas yokuguqulwa okubangelwayo.

Irhasi yeEndothermic:

Xa ulungiselela igesi ehlaziyiweyo, ukuba umlinganiselo womoya kwirhasi ekrwada uphantsi, ubushushu obukhutshwayo ngexesha lokusabela akwanelanga ukugcina ubushushu bokusabela bomguquli, kwaye i-reactor kufuneka inikwe ubushushu obuvela ngaphandle.Irhasi ehlaziyiweyo ethe yavela ibizwa ngokuba yi-Endothermic Gas.

IUmoya weKhabhoni onokubakhongumxholo wekhabhoni ohambelana nomoya we-atmosfera, olingana nomxholo wekhabhoni kwizinto xa i-atmosphere kunye ne-sintered material enekhabhoni ethile ifikelela kwi-reaction equilibrium (akukho carburization, akukho decarburization) kwiqondo lokushisa elithile.

Kwaye iI-Atmosphere yeKhabhoni elawulekayoligama eliqhelekileyo legesi elilungisiweyo elifakwe kwinkqubo ye-sintering ukulawula okanye ukulungelelanisa umxholo wekhabhoni wensimbi ene-sintered.

Izitshixo zokulawula ubungakanani be-CO2 kunye ne-H2Oemoyeni:

1) Ukulawulwa kwendawo ye-H2O yexabiso lombethe

Indawo yoMbethe: Iqondo lobushushu apho umphunga wamanzi osesibhakabhakeni uqalisa ukujiya ube yinkungu phantsi koxinzelelo oluqhelekileyo lomoya.Okukhona kukho amanzi amaninzi kwiatmosfera, kokukhona umbethe usiba phezulu.Indawo yombethe inokulinganiswa ngemitha yendawo yombethe: umlinganiselo wokufunxa amanzi usebenzisa i-LiCI.

2)Lawula ubungakanani be-CO2 kwaye ulinganiswe nge-infrared absorption analyzer.