Ingxubevange	%	Ni	Cr	Mo	Cu	N	C	Mn	Si	P	S
254SMO	Min.	17.5	19.5	6	0.5	0.18
Max.	18.5	20.5	6.5	1	0.22	0.02	1	0.8	0.03	0.01

254SMO iipropati ezibonakalayo:

Ukuxinana	8.0 g/cm3
Indawo yokunyibilika	1320-1390 ℃

254SMO ubuncinci beempawu zoomatshini kwiqondo lobushushu legumbi:

Ubume	Tensile strength Rm N Rm N/mm2	Unikeze Amandla RP0.2N/mm2	Ukwandisa A5 %
254 SMO	650	300	35

 

Uphawu:
Uxinaniso oluphezulu lwemolybdenum, ichromium kunye nenitrogen eyenziwe ngama-254SMO inokumelana okuhle kakhulu nemingxuma kunye nokusebenza komhlwa. I-Copper iphucule ukuxhathisa kwe-corrosion kwenye i-asidi. Ukongeza, ngenxa yomxholo wayo ophezulu we-nickel, i-chromium kunye ne-molybdenum, ukuze i-254SMO ibe noxinzelelo olulungileyo lwamandla okusebenza kwe-corrosion cracking.
I-1.Uluhlu oluninzi olubanzi lokusetyenziswa kwamava lubonise ukuba i-iin iqondo lokushisa eliphezulu, i-254SMO kumanzi olwandle iphinda ixhathise kakhulu kwi-gap yokusebenza kwe-corrosion, kuphela iindidi ezimbalwa zensimbi engenasici kunye nale ntsebenzo.
I-2.254SMO efana nephepha le-bleach elifunekayo ekuveliseni isisombululo se-acidic kunye nesisombululo se-halide oxidative corrosion resistance and resistance resistance inokufaniswa neyona nto inamandla kwisiseko se-alloy ye-nickel kunye ne-titanium alloys.
I-3.254SMO ngenxa yomxholo we-nitrogen ephezulu, ngoko amandla ayo omatshini kunezinye iindidi ze-austenitic stainless steel ziphezulu. Ukongeza, i-254SMO nayo inobungozi kakhulu kwaye inefuthe lamandla kunye ne-weldability elungileyo.
I-4.254SMO enomxholo ophezulu we-molybdenum ingenza izinga eliphezulu le-oxidation kwi-annealing, okuthi emva kokucocwa kwe-asidi nge-rough surface kunentsimbi eqhelekileyo yentsimbi ixhaphake ngaphezu kwendawo enqabileyo. Nangona kunjalo, ayichaphazeli kakubi ukuxhathisa umhlwa kwale ntsimbi.

 

Ulwakhiwo lwesinyithi
I-254SMO sisakhiwo esisembindini sobuso setyhubhiki. Ukuze ufumane i-austenitic structure, i-254SMO i-annealing ngokubanzi kwi-1150-1200℃.Kwezinye iimeko, izinto eziphathekayo mhlawumbi kunye neempawu zesigaba esiphakathi sesinyithi (χ isigaba kunye ne-α-phase). Nangona kunjalo, amandla abo empembelelo kunye nokumelana nomhlwa akuchatshazelwa kakubi kwiimeko eziqhelekileyo. Xa zibekwe kuluhlu lwe-600-1000℃, zinokuthi ngesigaba kwimvula yomda wengqolowa.

 

Ukumelana nokubola
I-254SMO enomxholo ophantsi kakhulu wekhabhoni, oku kuthetha ukuba ingozi ngokufudumeza okubangelwa yimvula ye-carbide incinci kakhulu. Kwanakwi-600-1000℃ emva kweyure enye i-sensitization isakwazi ukuba i-Strauss ngokusebenzisa uvavanyo lwe-corrosion ye-intergranular (i-Strauss Test ASTMA262 i-odolo ye-E) .Nangona kunjalo, ngenxa yomxholo wentsimbi ye-alloy ephezulu. Kwinqanaba lokushisa elikhankanywe ngasentla kwisigaba se-intermetallic kunye nokwenzeka kwesinyithi kwimvula yomda wengqolowa. Ezi sediments musa ukwenza ukuba kwenzeke intergranular umhlwa kwizicelo eendaba ezonakalisayo, ke, iwelding kungenziwa ngaphandle intergranular corrosion.Kodwa kubushushu obunzulu nitric acid, ezi intlenga kunokubangelwa intergranular umhlwa kwindawo echaphazelekayo ubushushu. Ukuba intsimbi eqhelekileyo engatyiwayo kwisisombululo esiqulethe ikloridi, ibromidi okanye i-iodide, iya kubonisa i-pitting, i-crevice corrosion okanye i-stress corrosion cracking form by corrosion localized. Nangona kunjalo, kwezinye iimeko, ubukho be-halide buya kukhawulezisa ukubola okufanayo. Ngokukodwa kwi-asidi engeyiyo i-oxidizing. Kwi-asidi ye-sulfuric ecocekileyo, i-254SMO ene-corrosion resistant eninzi kune-316 (intsimbi eqhelekileyo yentsimbi), kodwa ngokumelana nokuxhatshazwa kwe-corrosion xa kuthelekiswa ne-904L (NO8904) yensimbi engenasici kwiindawo eziphezulu. Kwi-asidi ye-sulfuric equkethe i-ion ye-chloride, i-254SMO enegunya elikhulu lokuxhathisa i-corrosion.I-316 ayinakusetyenziselwa insimbi engenasici kwi-hydrochloric acid ekubeni inokuthi yenzeke kwi-corrosion yendawo kunye ne-uniform corrosion, kodwa i-254SMO ingasetyenziswa kwi-diluted hydrochloric acid kumaqondo obushushu ngokubanzi. , ngaphantsi komda akufuneki ube nexhala malunga nomhlwa owenzekileyo. Nangona kunjalo, kufuneka sizame ukuphepha ukuqhekeka komsantsa. Kwi-silicate ye-fluoride (H2SiF4) kunye ne-hydrofluoric acid (HF), ukunyanzeliswa kwe-corrosion yensimbi eqhelekileyo engenasici kuncinci kakhulu, kwaye i-254SMO ingasetyenziswa kwiqondo lokushisa elibanzi kakhulu kunye noxinzelelo.

 

Indawo efakiweyo:
I-254SMO yimathiriyeli eneenjongo ezininzi enokusetyenziswa kwimizi-mveliso emininzi:
1. I-petroleum, izixhobo zepetrochemical, izixhobo zepetro-chemical, ezifana ne-bellows.
2. Izixhobo zokucoca i-pulp kunye nephepha, ezifana nokupheka i-pulp, i-bleaching, izihlungi zokuhlamba ezisetyenziswe kwi-barrel kunye ne-cylinder pressure rollers, njalo njalo.
3. Isixhobo sokucoca igesi ye-flue ye-flue, ukusetyenziswa kweendawo eziphambili: inqaba yokufunxa, i-flue kunye nepleyiti yokumisa, inxalenye yangaphakathi, inkqubo yokutshiza.
4. Elwandle okanye inkqubo yokusetyenzwa kwamanzi olwandle, njengezixhobo zombane ezisebenzisa amanzi olwandle ukupholisa iCondenser enodonga olucekethekileyo, ukukhutshwa kwetyuwa kwisixhobo sokwenza amanzi olwandle, kunokufakwa nangona amanzi esenokungaphumi kwisixhobo.
5. Imizi-mveliso yokukhupha ityuwa, njengezixhobo zokukhupha ityuwa okanye ukukhupha ityuwa.
6. Umtshintshi wokushisa, ngokukodwa kwindawo yokusebenza ye-chloride ion.