O le a le lelei o oloa faʻapipiʻi faʻafefete
E masani lava e le mafai ona faʻaaogaina uʻamea faʻafefete i totonu o siosiomaga faʻaleagaina ma le malosi faʻaitiitia poʻo le maualuga o le faʻamaufaʻailogaina (anoxic environment), ma o le faʻatinoga o oloa o loʻo faʻafouina i taimi uma, ma o loʻo faʻaaogaina lautele, ma o loʻo i ai le tele o gaosiga o oloa, pe faʻafefea. filifili O le gaosiga e fetaui ma oe o se saienisi.I le tasi itu, o le malamalama e tatau ona mafaufauina i le tau, ma isi itu e tatau foi ona mafaufau lelei, e pei o le faʻatulafonoina o le gaosiga ma pe faʻamaonia le auaunaga mulimuli ane.
Alloy e tetee i le pala
O a ituaiga o u'amea e tete'e i le pala?
1. A'a o u'amea u'amea
E fa'atatau i le 300 fa'asologa masani u'amea u'amea 304, 316L, 317L, ma isi mea e tetee atu i le ea po'o le suasami;austenitic uʻamea uʻamea 904L, 254SMO ma malosi tetee corrosion;uamea lua 2205, 2507, ma isi;u'amea fa'a'ele'ele o lo'o iai u'amea CU 20, ma isi.
2. Fa'avae u'amea-tete'e
E masani lava Hastelloy alloy ma NI-CU alloy, ma isi. Talu ai ona o le uʻamea NI lava ia o loʻo i ai se fausaga kupita faʻatatau i foliga, o lona faʻamautu tioata e mafai ai ona faʻaogaina atili elemene faʻafefiloi nai lo FE, e pei o CR, MO, ma isi, ina ia ausia. tetee Le gafatia o siosiomaga eseese;i le taimi lava e tasi, o le nickel lava ia o loʻo i ai se tomai faʻapitoa e tetee atu ai i le pala, aemaise lava le malosi e tetee atu ai i le faʻalavelave faʻalavelave e mafua mai i ions chloride.I si'osi'omaga fa'a'ale'a malosi fa'aitiitiga, si'osi'omaga fefiloi fefiloi lavelave, ma vaifofo o lo'o iai ion halogen, u'amea fa'a'ele'ele e fa'atatau i le nikeli o lo'o fa'atusalia e Hastelloy e matua'i sili atu nai lo u'amea fa'avae u'amea.
3.Hatelloy o le nickel-molybdenum-chromium-iron-tungsten nickel-based alloy.O se tasi o mea u'amea fa'aonapo nei e sili ona fa'afefete.E masani lava ona tetee atu i chlorine susu, chlorides oxidizing eseese, chloride masima fofo, sulfuric acid ma oxidizing masima, ma e lelei tetee corrosion i le vevela maualalo ma le vevela vevela hydrochloric acid.O le mea lea, i le tolu sefulu tausaga talu ai, ua faʻaaogaina lautele i siosiomaga corrosive faigata, e pei o alamanuia kemisi, alamanuia petrochemical, flue kasa desulfurization, pulupulu ma pepa, puipuiga o le siosiomaga ma isi fanua tau alamanuia.O faʻamatalaga faʻamaʻi eseese o Hastelloy alloys e masani, ae e le mafai ona faʻaaogaina e fai ma faʻamatalaga, aemaise lava i siosiomaga e le iloa, ma e tatau ona filifilia mea pe a uma suʻega.E le lava le Cr i Hastelloy e tetee atu ai i le pala i si'osi'omaga malosi fa'ama'i, pei ole nitric acid vevela.O le gaosiga o lenei uʻamea e masani lava mo le faʻagasologa o vailaʻau, aemaise lava i le i ai o le vailaʻau fefiloi, e pei o le paipa faʻafefe o le faʻaogaina o le kasa faʻafefe.
Taimi meli: Me-15-2023
