Fa'aogaina o paipa uamea i totonu ole suau'u ma alamanuia petrochemical
Uamea uamea e tusa ai ma le tuufaatasiga o vailaau e mafai ona vaevaeina i le u'amea u'amea Cr, u'amea u'amea CR-Ni, u'amea u'amea CR-Ni-Mo, e tusa ai ma le fanua talosaga e mafai ona vaevaeina i u'amea u'amea fa'afoma'i, u'amea fa'a'ele'ele'ele'ele u'amea u'amea, anti- oxidation uʻamea uʻamea, Cl – corrosion uʻamea uʻamea.Ae o le faʻavasegaga sili ona faʻaaogaina e tusa ai ma le fausaga o le uamea e faʻavasegaina, e mafai ona vaevaeina i le ferritic stainless steel, austenitic stainless steel, martensitic stainless steel, duplex stainless steel and precipitation hardening stainless steel.I suau'u ma petrochemical talosaga, austenitic u'amea u'amea, ferritic u'amea u'amea ma duplex u'amea u'amea tala mo se vaega tele.
Ferritic stainless steel Cr anotusi i le lautele i le va o le 13% -30%, C anotusi e masani lava e itiiti ifo nai lo 0.25%, e ala i annealing po o le matua, carbide i le ferritic saito tuaoi precipitation, ina ia ausia corrosion tetee.I se tulaga lautele, o le corrosion teteʻe o ferritic uamea stainless e maualalo nai lo austenitic uamea stainless ma duplex uamea, ae maualuga atu nai lo martensitic uamea stainless.Ae ona o le tau maualalo o le gaosiga pe a faʻatusatusa i isi uʻamea uʻamea, o le mea lea, i le vailaʻau ma petrochemical talosaga, mo le corrosion resistant medium ma le malosi manaʻomia e le maualuga i le fanua o le faʻaoga lautele.E pei o le suauu sulfur, hydrogen sulfide, potu vevela nitric acid, carbonic acid, hydrogen ammonia tina ava, urea gaosiga o le maualuga-vevela ammonia, urea tina ava ma le vinylon gaosiga o vinyl acetate, acrylonitrile ma isi siosiomaga e faʻaaogaina lautele.
O le lautele Cr anotusi o martensitic uamea uʻamea i le va o le 13% -17%, ma le C anotusi e maualuga, i le va o le 0.1% ma le 0.7%.E maualuga atu le malosi, ma'a'a ma le ofuina o le tete'e, ae o le corrosion e maualalo.E masani ona faʻaaogaina i le suauʻu ma petrochemical fanua i le siʻosiʻomaga e le malosi ai le ala corrosive, e pei o le maualuga o le malosi ma le aʻafiaga o vaega o uta, e pei o vaʻa afi afi, paʻu ma isi vaega faʻatasi ma vaega.
O le anotusi o le Cr i austenitic uʻamea uʻamea i le va o le 17% -20%, o le anotusi o le Ni i le va o le 8% -16%, ma o le anotusi o le C e masani ona maualalo ifo nai lo le 0.12%.E mafai ona maua le fausaga austenitic i le vevela o le potu e ala i le faʻaopoopoina o Ni e faʻalautele ai le vaega o suiga austenitic.Austenitic stainless steel corrosion resistance, plasticity, toughness, process performance, welding performance, low temperature performance compared to isi stainless steel e sili atu ona lelei, o lona faʻaaogaina i vaega eseese e sili atu ona lautele, o lona faʻaaogaina o le 70% o le aofaʻi atoa. o u'amea uma.I le fanua o le suauu ma petrochemical, auala corrosive malosi ma maualalo le vevela ala, lelei o austenitic uʻamea uʻamea e sili atu, e pei o le corrosion maualuga tetee, aemaise lava le vaega totonu i le tetee atu i intergranular corrosion siosiomaga, e pei o le vevela exchanger / paipa fittings, cryogenic. liquefied natural gas (LNG) paipa, e pei o le urea, sulfur ammonia gaosiga atigipusa, fa'alu kasa aveese pefu ma desulfurization masini.
Duplex uamea uamea ua atiina ae i luga o le faavae o le tasi-vaega uʻamea uʻamea, lona Ni anotusi e masani lava e uiga i le afa o austenitic stainless steel Ni anotusi, faʻaitiitia le tau alu.Austenitic u'amea u'amea e sili ona lelei tete'e ma le maualuga atoatoa faatinoga, e foia le vaivai o ferritic ma martensitic uʻamea uʻamea tetee, austenitic malosi uʻamea ma ofuina teteʻe.I le fanua o suauu ma petrochemical, e masani ona faaaogaina i le suasami corrosion teteʻe fatafata suauu i fafo, acidic vaega ma meafaigaluega, aemaise i pitting corrosion vaega tetee.
O le faʻamalosia o le faʻamalosia o timuga e masani lava e ala i le faʻamalosia o timuga e maua ai le faʻatinoga o le malosi maualuga, e ositaulagaina ai foʻi lona teteʻe o le corrosion, o lea e faʻaitiitia ai le faʻaaogaina i le corrosive auala, e masani ona faʻaaogaina i masini petrochemical mining ma isi alamanuia.
Fa'aogaina o paipa uamea i totonu ole suau'u ma alamanuia petrochemical
Ole suau'u ma suau'u ole alamanuia poutu ole tamaoaiga ole atunu'u, e iai sona sao taua ile tamaoaiga ole atunu'u.I le 20 tausaga ua tuanaʻi, ua faʻaleleia atili le faʻaleleia atili o paipa uʻamea pe leai se paipa poʻo paipa uelo i le gaosiga o tekonolosi.O le paipa uʻamea uʻamea gaosia e nisi o fale gaosi oloa ua oʻo i le tulaga e mafai ona suia atoa oloa faaulufale mai, iloa le localization o paipa uamea.
I le suauu ma le alamanuia petrochemical, e masani ona faʻaaogaina paipa uʻamea i pipeline felauaiga faiga, e aofia ai faagaau ogaumu maualuga-omiga, paipa, paipa ta'e suauu, paipa felauaiga vai, faafesuiaiga vevela ma isi.E mana'omia le u'amea u'amea e fa'atino lelei i le su'esu'e ma le 'au'auna.
Taimi meli: Iuni-20-2022