Kungani Imikhiqizo ye-Tungsten Carbide Incipha Ngemva Kokugcotshwa?

I-Tungsten carbide ingenye yezinto ezisetshenziswa kakhulu embonini yesimanje. Embonini, sihlala sisebenzisa i-powder metallurgy ukwenza imikhiqizo ye-tungsten carbide. E-sintering, ungathola ukuthi imikhiqizo ye-tungsten carbide inciphile. Ngakho-ke kwenzekani ngemikhiqizo ye-tungsten carbide, futhi kungani imikhiqizo ye-tungsten carbide yancipha ngemva kokucwiliswa? Kulesi sihloko, sizohlola isizathu.

Ukukhiqizwa kwemikhiqizo ye-tungsten carbide

1. Ukukhetha nokuthenga 100% impahla eluhlaza, tungsten carbide;

2. Ukuxuba i-tungsten carbide powder ne-cobalt powder;

3. Ukugaya impushana exubile emshinini wokuxuba ibhola noketshezi oluthile njengamanzi ne-ethanol;

4. Fafaza ukomisa impushana emanzi;

5. Ukuhlanganisa impushana ibe yizimo nosayizi abahlukene ngokwezidingo zamakhasimende. Izindlela zokucindezela ezifanele zinqunywa izinhlobo nobukhulu bemikhiqizo ye-tungsten carbide;

6. Ukucwila esithandweni somlilo;

7. Ukuhlolwa kwekhwalithi yokugcina.

Izigaba ze-sintering tungsten carbide imikhiqizo

1. Ukususwa kwe-ejenti yokubumba kanye nesiteji sokushiswa kwangaphambili;

Kulesi sigaba, isisebenzi kufanele silawule izinga lokushisa ukuze lenyuke kancane kancane. Njengoba izinga lokushisa likhula kancane kancane, umswakama, igesi, ne-solvent eyinsalela ku-tungsten carbide ehlanganisiwe izohwamuka, ngakho lesi sigaba esokususa i-ejenti yokubumba nezinye izinto ezisele kanye nokushiswa kwangaphambili. Lesi sigaba senzeka ngaphansi kuka-800 ℃

2. Isiteji esiqinile se-sintering;

Njengoba izinga lokushisa likhuphuka futhi lidlule ku-800 ℃, liphendukela esigabeni sesibili. Lesi sigaba senzeka ngaphambi kokuba uketshezi lube khona kulolu hlelo.Kulesi sigaba, ukugeleza kwepulasitiki kuyanda, futhi umzimba we-sintered uyancipha kakhulu.Ukuncipha kwe-tungsten carbide kungabonwa ngokungathí sina, ikakhulukazi ngaphezu kwe-1150 ℃.

Cr. Sandvik

3. Isiteji se-Liquid-sintering;

Esigabeni sesithathu, izinga lokushisa lizokhuphuka liye ezingeni lokushisa le-sintering, izinga lokushisa eliphakeme kakhulu ngesikhathi sokushisa. I-shrinkage iqedwa ngokushesha lapho isigaba se-liquid sivela ku-tungsten carbide futhi ukuqina kwe-tungsten carbide kuncipha.

4. Isiteji sokupholisa.

I-carbide enosimende ngemva kokugcoba ingasuswa esithandweni somlilo futhi ipholiswe ekamelweni lokushisa. Ezinye izimboni zizosebenzisa ukushisa kwemfucuza esithandweni somlilo ukuze kusetshenziswe ukushisa okushisayo. Kuleli qophelo, njengoba izinga lokushisa lehla, kwakhiwa i-microstructure yokugcina ye-alloy.

Uma unentshisekelo emikhiqizweni ye-tungsten carbide futhi ufuna ulwazi olwengeziwe nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma ngemeyili kwesokunxele, noma SITHUMELE IMEYILI ezansi nekhasi.