Uyini umehluko phakathi kuka-430 no-439 insimbi engagqwali?

Insimbi engagqwali iyingxubevange esetshenziswa kakhulu empilweni yansuku zonke kanye nokukhiqizwa kwezimboni, futhi ithandwa ngenxa yokumelana nokugqwala kwayo okuhle kakhulu namandla. Phakathi kwezinhlobo eziningi zensimbi engagqwali, i-430 ne-439 yizinhlobo ezimbili ezivamile, kodwa kukhona umehluko obalulekile phakathi kwazo.

Ngokombono wokwakheka kwamakhemikhali

430 insimbi engagqwali iyingxubevange equkethe 16-18% chromium futhi akukho nickel. Lokhu kuyinikeza ukumelana nokugqwala okuhle kakhulu kwezinye izindawo, ikakhulukazi emithonjeni ye-oxidizing. 439 insimbi engagqwali iyingxubevange equkethe 17-19% chromium kanye 2-3% nickel. Ukwengezwa kwe-nickel akugcini nje ukuthuthukisa ukumelana nokugqwala kwezinto, kodwa futhi kuthuthukisa ukuqina kwayo nokucutshungulwa.

Mayelana nezakhiwo zomzimba

I-430 insimbi engagqwali iyinsimbi engagqwali ye-martensitic enobulukhuni obuphakeme namandla, kodwa i-ductility ephansi kanye nokuqina. Lokhu kuyenza ifaneleke kakhulu izinhlelo zokusebenza ezithile lapho kudingeka khona amandla aphezulu. Insimbi engagqwali engu-439 iwuhlobo lwensimbi engagqwali ye-austenitic, ene-ductility enhle nokuqina, ingamelana nokuguqulwa okukhulu futhi akulula ukuphuka.

Ngaphezu kwalokho, kukhona umehluko phakathi kokubili emkhakheni wesicelo. Ngenxa yokumelana nokugqwala namandla aphezulu ensimbi engagqwali engama-430, ivamise ukusetshenziselwa ukwakhiwa kwemishini yokukhipha umoya wezimoto, imishini yokuwasha, i-kitchenware nezinye izinto ezidinga ukumelana namazinga okushisa aphezulu kanye nezindawo ezigqwalile. I-439 insimbi engagqwali isetshenziswa kakhulu ku-petrochemical, imishini yezokwelapha, ukucubungula ukudla neminye imikhakha ngenxa yezakhiwo zayo ezinhle zokucubungula nokumelana nokugqwala.

Kafushane, i-430 ne-439 insimbi engagqwali inomehluko othile ekubunjweni kwamakhemikhali, izakhiwo ezibonakalayo kanye nezinkambu zesicelo. Ukuqonda lo mehluko kusisiza ukuthi sikhethe kangcono futhi sisebenzise izinto zensimbi engagqwali ukuze sihlangabezane nezidingo zezindawo ezihlukene nezinhlelo zokusebenza.