Linjani ukwakheka kweshidi lensimbi engagqwali elingu-304?

Ishidi lensimbi engagqwali le-304 wuhlobo lwensimbi engagqwali ye-austenitic esetshenziswa kabanzi ezinhlelweni ezihlukene zezimboni ngenxa yokumelana nokugqwala okuhle kakhulu, amandla, kanye ne-ductility. Yakhiwe ngezinto ezithile ezinikeza izici zayo eziyingqayizivele nezici.

 

Ingxenye eyinhloko

Izingxenye eziyinhloko zeshidi lensimbi engu-304 insimbi, ikhabhoni, i-chromium, ne-nickel. I-ayoni iyisici esiyisisekelo, esinikeza insimbi amandla ayo kanye ne-ductility. Ikhabhoni yengezwa ukuze kuthuthukiswe ubulukhuni nokuqina kwensimbi, kodwa kufanele ibe khona ekugxilweni okuphansi kakhulu ukugwema ukwehlisa ukumelana nokugqwala.

 

I-elementi ye-Chromium

I-Chromium iyisici esibucayi kakhulu ku-304 insimbi engagqwali, njengoba inesibopho sokungagqwali kwayo. I-Chromium yakha isendlalelo se-oxide esivikelayo ebusweni bensimbi lapho sichayeka kumoya-mpilo, ivimbela ukugqwala nokugqwala. Ngensimbi engagqwali engu-304, okuqukethwe kwe-chromium kuvame ukuzungeze u-18-20% ngesisindo.

 

Isici se-nickel

I-Nickel ingenye ingxenye ebalulekile yensimbi engagqwali engu-304, ekhona ekugxilweni kuka-8-10% ngesisindo. I-Nickel ithuthukisa ukuqina kwensimbi, iyenze imelane nokuqhekeka nokuphuka. Iphinde ithuthukise ukumelana nokugqwala, ikakhulukazi ezindaweni ezine-chloride.

 

Ezinye izakhi ezimbalwa

Ngaphezu kwalezi zakhi eziyinhloko, insimbi engagqwali engu-304 ingase futhi ibe nenani elincane lezinye izakhi ezifana ne-manganese, i-silicon, isulfure, i-phosphorus, ne-nitrogen. Lezi zakhi zengezwa ukuze kulungiswe izakhiwo zensimbi futhi kuthuthukiswe ukusebenza kwayo ezinhlelweni ezithile.

 

Kafushane, ukwakheka kweshidi lensimbi engagqwali elingu-304 ngokuyinhloko kusekelwe ensimbi, ene-chromium ne-nickel njengezici ezibalulekile zengxubevange. Lezi zici, kanye namanani amancane ezinye izici, zinikeza insimbi engagqwali engu-304 ukumelana nokugqwala kwayo okuhle kakhulu, i-ductility, nokusebenza kwezinga lokushisa eliphezulu. Lokhu kwakheka okuyingqayizivele kwenza ishidi lensimbi engagqwali elingu-304 libe yizinto ezihlukahlukene kakhulu ezifanele ukusetshenziswa okubanzi.