Kuvelaphi ukuhlukaniswa kwamapayipi ensimbi engagqwali?

Kuamapayipi ensimbi engagqwali, insimbi ekwazi ukumelana nokugqwala ngenxa yemithombo yezindaba eqala ukugqwala njengomoya, isitimu, namanzi, nezinto ezigqwala ngamakhemikhali njenge-asidi, i-alkali, nosawoti, ibizwa nangokuthi insimbi engagqwali engamelana ne-asidi.Ezisetshenziswa ezingokoqobo, izinsimbi ezimelana nemidiya ebolayo ebuthakathaka ngokuvamile zibizwa ngokuthi insimbi engagqwali, futhi izinsimbi zimelana nemidiya yamakhemikhali zibizwa ngokuthi yinsimbi engamelana ne-asidi.Ngenxa yomehluko ekwakhekeni kwamakhemikhali phakathi kwalokhu okubili, eyokuqala ayimelani nokugqwala yimithombo yamakhemikhali, kuyilapho yakamuva ngokuvamile ayinabala.

Okwesibili, ukumelana nokugqwala kwamapayipi ensimbi engagqwali kuncike ezintweni ze-alloying eziqukethwe ensimbi.I-Chromium iyingxenye eyisisekelo yensimbi engagqwali ukuze ithole ukumelana nokugqwala.Lapho okuqukethwe kwe-chromium kunsimbi kufinyelela cishe ku-1.2%, i-chromium isebenzisana nokugqwala.Umphumela we-oxygen entweni wenza ifilimu encane ye-oxide ebusweni bensimbi, engavimbela ukugqwala kwensimbi.I-substrate iyagqwala futhi.Ngaphezu kwe-chromium, izakhi ze-alloying ezivame ukusetshenziswa yi-nickel, i-molybdenum, i-titanium, i-niobium, ithusi, i-nitrogen, njll.