Umehluko Phakathi kuka-316L kanye ne-304 Stainless Steel

Kokubili316L kanye 304ama-austenitic stainless steels asetshenziswa kakhulu ezimbonini, ezokwakha, ezokwelapha, nasezinhlelweni ezihlobene nokudla. Nokho, ziyehluka kakhuluukwakheka kwamakhemikhali, ukumelana nokugqwala, izakhiwo zemishini, kanye nezicelo.

1. Ukwakheka Kwamakhemikhali

304 Insimbi Engagqwali: Ihlanganiswe ngokuyinhloko18% i-chromium (Cr) kanye ne-nickel engu-8% (Ni), yingakho yaziwa nangokuthi18-8 insimbi engagqwali.

316L Insimbi Engagqwali: Iqukethe16-18% chromium, 10-14% nickel, kanye nokunye2-3% molybdenum (Mo), okuthuthukisa ukumelana nokugqwala kwayo.

I"L" ku-316Limeleikhabhoni ephansi (≤0.03%), ukuthuthukisa ukushisela kwayo kanye nokunciphisa ingozi yokugqwala kwe-intergranular.

2. Ukumelana Nokugqwala

I-304 inokumelana nokugqwala okuhle, ilungele izindawo ezijwayelekile kanye nokuchayeka kuma-oxidizing acid.

I-316L inikeza ukumelana nokugqwala okuphakeme, ikakhulukazi kuizindawo ezinothe nge-chloride(njengamanzi olwandle nomkhathi anosawoti), sibonga i-molybdenum, esiza ukumelanaukugqwala kwemigodi kanye nokugqwala.

3. Izakhiwo Zemishini & Ukusebenza

304 inamandla, enobulukhuni obusesilinganisweni, okwenza kube lula ukusebenza ngokubandayo, ukugoba nokushisela.

I-316L inamandla kancane kodwa i-ductile ngaphezulu, ngokuqukethwe kwekhabhoni ephansi okuthuthukayoukushisela, okwenza kube kuhle ezinhlelweni zokusebenza lapho ukwelashwa kokushisa kwe-post-weld kungenakwenzeka.

4. Ukuqhathaniswa Kwezindleko

I-316L ibiza kakhulu kune-304, ikakhulukazi ngenxa yokuqukethwe kwayo okuphezulu kwe-nickel ne-molybdenum, okwandisa izindleko zokukhiqiza.

5. Izicelo Ezibalulekile

Isiphetho

Uma isicelo sakho siku aimvelo jikelele(njengezinto zasekhishini, izinto zokwakha, noma izinto zasendlini),I-304 iyisinqumo esingabizi kakhulu. Nokho, ngobaizindawo ezonakalisa kakhulu(njengamanzi olwandle, ukucubungula amakhemikhali, noma imithi) nomalapho kudingeka khona ukushisela okuphezulu, I-316L iyindlela engcono kakhulu.