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

254SMO Izakhiwo ezibonakalayo:

Ukuminyana	8.0 g/cm3
Iphoyinti lokuncibilika	1320-1390 ℃

254SMO ubuncane bezakhiwo zemishini egumbini lokushisa:

Isimo	Amandla aqinile Rm N Rm N/mm2	Amandla esivuno RP0.2N/mm2	Ukwelula A5 %
254 SMO	650	300	35

 

Isici:
Ukuhlushwa okuphezulu kwe-molybdenum, i-chromium ne-nitrogen eyenziwe i-254SMO inokumelana okuhle kakhulu nokugqwala kwemigodi kanye nokusebenza kokugqwala kwemifantu. Ithusi lithuthukise ukumelana nokugqwala kwe-asidi ethile. Ngaphezu kwalokho, ngenxa yokuqukethwe kwayo okuphezulu kwe-nickel, i-chromium ne-molybdenum, ukuze i-254SMO ibe namandla amahle okucindezeleka kokugqwala kokuqhekeka.
I-1.Ukusetshenziswa okuningi okubanzi kokuhlangenwe nakho kubonise ukuthi ngisho namazinga okushisa aphakeme, i-254SMO emanzini olwandle futhi imelana kakhulu negebe lokusebenza kokugqwala, izinhlobo ezimbalwa kuphela zensimbi engagqwali ngalokhu kusebenza.
I-2.254SMO efana nephepha le-bleach elidingekayo ekukhiqizeni isixazululo esine-asidi kanye nesisombululo se-halide oxidative corrosion resistance kanye nokumelana nokugqwala kungafaniswa nokuqina kakhulu kusisekelo sengxubevange ye-nickel ne-titanium alloys.
3.254SMO ngenxa yokuqukethwe okuphezulu kwe-nitrogen, ngakho amandla ayo okusebenza kunezinye izinhlobo zensimbi engagqwali ye-austenitic aphezulu. Ukwengeza, i-254SMO nayo ingakala kakhulu futhi inomthelela wamandla kanye nokushisela okuhle.
I-4.254SMO enokuqukethwe okuphezulu kwe-molybdenum ingayenza izinga eliphezulu le-oxidation ku-annealing, okuthi ngemva kokuhlanza i-asidi ngendawo emagebhugebhu kunensimbi engagqwali evamile kuvame kakhulu kunendawo emagebhugebhu. Kodwa-ke, akuzange kuthinte kabi ukumelana nokugqwala kwale nsimbi.

 

Isakhiwo se-Metallurgical
I-254SMO iyisakhiwo se-cubic lattice esigxile ebusweni. Ukuze kutholwe isakhiwo se-austenitic, i-254SMO annealing jikelele ku-1150-1200℃.Kwezinye izimo, impahla ingase ibe nemikhondo yesigaba esimaphakathi sensimbi (χ isigaba kanye nesigaba α). Kodwa-ke, amandla abo okuthonya kanye nokumelana nokugqwala akuthikamezwa kabi ezimeni ezijwayelekile. Uma zibekwe kububanzi obungu-600-1000℃, zingase zifake imvula yomngcele wokusanhlamvu.

 

Ukumelana nokugqwala
254SMO enokuqukethwe kwekhabhoni ephansi kakhulu, okusho ukuthi ingozi yokushisisa okubangelwa imvula ye-carbide incane kakhulu. Ngisho naku-600-1000℃ ngemva kokuzwela kwehora elilodwa kusakwazi ukwenza i-Strauss ngokuhlolwa kokugqwala kwe-intergranular (Strauss Test ASTMA262 order E). Nokho, ngenxa yokuqukethwe kwensimbi ye-alloy ephezulu. Esigabeni sokushisa esishiwo ngenhla se-intermetallic esinethuba lensimbi emngceleni wezinhlamvu zemvula. Lezi zinsalela azikwenzi kwenzeke ukugqwala kwe-intergranular kuzinhlelo zokusebenza zemidiya ezonakalisayo, khona-ke, ukushisela kungenziwa ngaphandle kokugqwala kwe-intergranular. Uma insimbi engagqwali evamile esixazululweni esiqukethe i-chloride, i-bromide noma i-iodide, izobonisa ukugqwala kwe-pitting, ukugqwala kwemifantu noma ifomu lokuqhekeka lokugqwala kwengcindezi ngokugqwala kwendawo. Kodwa-ke, kwezinye izimo, ukuba khona kwe-halide kuzosheshisa ukugqwala okufanayo. Ikakhulukazi ku-asidi engeyona oxidizing. Ku-sulfuric acid emsulwa, i-254SMO enokumelana nokugqwala okukhulu kakhulu kuno-316 (insimbi engagqwali evamile), kodwa enokumelana nokugqwala okunciphile uma kuqhathaniswa nensimbi engagqwali engu-904L (NO8904) ekugxilweni okuphezulu. Ku-asidi ye-sulfuric equkethe ama-ion e-chloride, i-254SMO enamandla amakhulu kakhulu okumelana nokugqwala.I-316 ayikwazi ukusetshenziselwa insimbi engagqwali ku-hydrochloric acid njengoba ingase yenzeke ukugqwala kwendawo kanye nokugqwala okufanayo, kodwa i-254SMO ingasetshenziswa ku-diluted hydrochloric acid emazingeni okushisa ajwayelekile. ,ngaphansi kwesifunda somngcele akudingeki sikhathazeke ngokuthi ukugqwala kwenzeka. Nokho, kufanele sizame ukugwema ukuqhekeka kwegebe. Ku-fluoride silicate (H2SiF4) kanye ne-hydrofluoric acid (HF), ukumelana nokugqwala kwensimbi engagqwali evamile kulinganiselwe kakhulu, futhi i-254SMO ingasetshenziswa ekushiseni okubanzi kakhulu nokugxila.

 

Inkambu esetshenzisiwe:
I-254SMO iyinto enezinjongo eziningi ingasetshenziswa ezinhlelweni eziningi zezimboni:
1. Uphethiloli, okokusebenza kwe-petrochemical, okokusebenza kwe-petro-chemical, okufana nezifutho.
2. Imishini yokuhlanza i-pulp nephepha, njengokupheka kwe-pulp, ukuxubha, izihlungi zokugeza ezisetshenziswa emgqonyeni nama-cylinder pressure rollers, njalonjalo.
3. Imishini yokususa igesi yegesi ye-power plant flue, ukusetshenziswa kwezingxenye eziyinhloko: umbhoshongo wokumuncwa, umshini wokuwasha kanye nepuleti lokumisa, ingxenye yangaphakathi, uhlelo lokufutha.
4. Olwandle noma uhlelo lokucutshungulwa kwamanzi olwandle, njengezitshalo zikagesi ezisebenzisa amanzi olwandle ukupholisa i-Condenser enezindonga ezincane, ukukhipha usawoti okokusebenza kwamanzi olwandle, kungasetshenziswa nakuba amanzi engase angagelezi ocingweni.
5. Izimboni zokukhipha usawoti emanzini, njengosawoti noma okokusebenza kokukhipha usawoti emanzini.
6. Isishintshi sokushisa, ikakhulukazi endaweni yokusebenza ye-ion chloride.