Umahluko phakathi kwe-316L kunye ne-304 yeNtsimbi engagqwali

Zombini316L kunye ne-304ziziintsimbi ze-austenitic ezisetyenziswa ngokubanzi kwimizi-mveliso, ulwakhiwo, unyango, kunye nezicelo ezinxulumene nokutya. Nangona kunjalo, ziyahluka kakhuluukwakheka kweekhemikhali, ukumelana nokubola, iipropathi zoomatshini, kunye nokusetyenziswa.

1. Ukubunjwa kwemichiza

304 Intsimbi engatyiwa: Iqulunqwe ikakhulu yiI-18% yechromium (Cr) kunye ne-8% yenikeli (Ni), yiyo loo nto ikwabizwa ngokuba18-8 intsimbi engenasici.

316L iNtsimbi eNgatyiwayo: Iqulethe16-18% chromium, 10-14% nickel, kunye nolongezelelweyo2-3% molybdenum (Mo), eyongeza ukuxhathisa kwayo ukubola.

I"L" kwi-316Limele iikhabhoni ephantsi (≤0.03%), ukuphucula i-weldability yayo kunye nokunciphisa umngcipheko we-corrosion intergranular.

2. Ukuchasa ukuMdla

I-304 inokumelana nokugqwala okulungileyo, ilungele iindawo eziqhelekileyo kunye nokuvezwa kwi-acids oxidizing.

I-316L inika ukuxhathisa okuphezulu kwe-corrosion, ngakumbi kwiIindawo ezityebileyo zekloridi(njengamanzi olwandle kunye ne-atmospheres enetyuwa), ngenxa ye-molybdenum, enceda ukuxhathisaimingxuma kunye nomhlwa.

3. IiPropati zoomatshini kunye nokuSebenza

I-304 yomelele, ngokuqina okuphakathi, okwenza kube lula ukusebenza ngokubandayo, ukugoba, kunye nokuwelda.

I-316L ingaphantsi kancinci kodwa i-ductile eninzi, kunye nomxholo wekhabhoni ophantsi ophuculayoukuwelda, okwenza kube yinto efanelekileyo kwizicelo apho unyango lwe-post-weld heat heat lungenakwenzeka.

4. Uthelekiso lweendleko

I-316L ibiza kakhulu kune-304, ikakhulu ngenxa ye-nickel ephezulu kunye nomxholo we-molybdenum, okwandisa iindleko zokuvelisa.

5. Izicelo eziphambili

Ukuqukumbela

Ukuba isicelo sakho siku-aindawo jikelele(njengezinto zasekhitshini, izixhobo zokwakha, okanye izixhobo zasekhaya),I-304 lukhetho olungabizi kakhulu. Nangona kunjalo, kubaiindawo ezinokonakala kakhulu(njengamanzi olwandle, ukusetyenzwa kweekhemikhali, okanye amayeza) okanyeapho kufuneka i-weldability ephezulu, I-316L lolona khetho lungcono.