Ishidi Lensimbi Engagqwali

 Isiphetho esingunombolo 4 sihlala siyindlela yokuzikhethela ezintweni zikagesi zasekhishini, izindawo zokudla neziphuzo, amakheshi, izitebhisi ezizihambelayo, izibhedlela, nanoma iyiphi indawo lapho insimbi engagqwali ingase ihlangane nokudla. Ibonakala ngamamaki ayo amafushane, wokupholisha aqondile, lesi siphetho sibuye sibe lula kakhulu ukuhlala sibukeka sisihle ngokuhamba kwesikhathi. Kuye ngokuthi insimbi izosetshenziswa kanjani, igrit yokugcina yokupholisha ingaba kusuka ku-120 kuya ku-320—izinombolo zegrit ephakeme zikhiqiza imihuzuko emihle kanye nokubukeka okucwebezelayo. Kungakhathalekile ukuthi i-grit, umphumela uba indawo okumaholo kwayo ngokuvamile angeqi ku-Ra 25 µin, okwenza kube kokubili okuhlanzekile nokunokunakekelwa okuphansi.

I-premium yethu engu-304-2B yensimbi engagqwali iyi-low-carbon, i-austenitic chromium-nickel alloy eyakhelwe ukumelana nokugqwala okuvelele nokuvikela ukugqwala okuthuthukisiwe kwe-intergranular, ngisho nangemva kokushisela noma ukwelashwa okwehlisa ingcindezi. Ngokwakheka okuklanyelwe ukunciphisa ukwakheka kwe-carbide, leli banga liqinisekisa ukwethembeka kuzinqubo eziningi zokwakha ezishiselwe futhi lizifanelekela izinhlelo zokusebenza lapho izinga lokushisa lokusebenza lingeqi ku-800°F. Esimeni salo sokuvuvukala, ishidi alinawo uzibuthe futhi alizuzi ngokuqina ngokwelashwa okungeziwe kokushisa, okulenza lilungele ukunemba nokuqina ekusetshenzisweni okuhlukahlukene.