I-15Mo3 (15MoG) : Ingumbhobho wensimbi kwi-DIN17175 standard. Yityhubhu yentsimbi ye-carbon molybdenum enedayamitha encinci yebhoyila kunye ne-superheater, kunye ne-pearlescent yohlobo lwentsimbi eshushu. Ngo-1995, yatshintshwa ukuba ibeGB5310kwaye yabizwa ngokuba yi-15MoG. Ukubunjwa kwayo kweekhemikhali kulula, kodwa iqulethe i-molybdenum, ngoko inamandla angcono e-thermal kune-carbon steel ngelixa igcina ukusebenza kwenkqubo efanayo njenge-carbon steel. Ngenxa yokusebenza kwayo kakuhle, ixabiso eliphantsi, lisetyenziswa kakhulu ehlabathini. Nangona kunjalo, insimbi inomkhuba wokwenza i-graphitization emva kokusebenza kwexesha elide kwiqondo lokushisa eliphezulu, ngoko ukushisa kwayo kufuneka kulawulwe ngaphantsi kwe-510 ℃, kwaye inani le-Al elongezelelweyo kwi-smelting kufuneka lilinganiselwe ukulawula nokulibazisa inkqubo ye-graphitization. Le ityhubhu yentsimbi isetyenziselwa ikakhulu ubushushu obuphantsi be-superheater kunye ne-reheater ephantsi yobushushu. Ubushushu bodonga bungaphantsi kwe-510℃. Ukubunjwa kwayo kweekhemikhali C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Umgangatho wamandla oqhelekileyo σs≥270-285, σb≥450-600 MPa; Plastic delta 22 okanye ngaphezulu.

15CrMoG:GB5310-95 insimbi (ehambelana ne-1CR-1 / 2Mo kunye ne-11 / 4CR-1 / 2MO-Si insimbi esetyenziswa kakhulu kwihlabathi), umxholo wayo we-chromium uphezulu kunentsimbi ye-12CrMo, ngoko inamandla aphezulu e-thermal kwi-500-550 ℃. Xa ubushushu budlula i-550℃, amandla e-thermal ensimbi ayancipha kakhulu. Xa isetyenziswa ixesha elide kwi-500-550 ℃, i-graphitization ayenzeki, kodwa i-carbide spheroidization kunye ne-alloying element redistribution zenzeka, ezikhokelela ekunciphiseni amandla e-thermal yentsimbi. Intsimbi inokumelana kakuhle nokuphumla kwi-450 ℃. Ukwenza umbhobho wayo kunye nokusebenza kwenkqubo ye-welding kulungile. Isetyenziswa ikakhulu njengoxinzelelo oluphezulu kunye oluphakathi kombhobho womphunga kunye nebhokisi yokudibanisa kunye neparameter yomphunga ongaphantsi kwe-550 ℃, ityhubhu ye-superheater kunye nobushushu bodonga obungaphantsi kwe-560 ℃, njl njl. -0.70, S≤0.030, P≤0.030, CR0.80-1.10, MO0.40-0.55; Ngaphantsi kwemeko eqhelekileyo yokucaphuka, inqanaba lamandla σs≥235, σb≥440-640 MPa; Idelta yeplastiki p 21.

T22 (P22), 12Cr2MoG: T22 (P22) ziASME SA213 (SA335) izixhobo zekhowudi, ezifakwe kuyoGB5310-95. Kwi-series ye-CR-Mo yensimbi, ukusebenza kwayo kwamandla e-thermal kuphezulu, ubushushu obufanayo bomelele kunye noxinzelelo oluvumelekileyo kune-9CR-1Mo yentsimbi nangaphezulu, ngoko isetyenziswa ngokubanzi kumandla angaphandle ashushu, amandla enyukliya kunye neenqanawa zoxinzelelo. Nangona kunjalo, uqoqosho lwayo lobuchwephesha lungaphantsi kwe-12Cr1MoV yethu, ngoko ke ayisetyenziswanga kangako kwimveliso yebhoyila yamandla ashushu asekhaya. Sebenzisa kuphela xa kuyimfuneko (ingakumbi xa uyilwe kwaye usenziwa ngokuhambelana nekhowudi ye-ASME). Intsimbi ayinaluvelwano kunyango lobushushu kwaye ineplastiki ephezulu ehlala ixesha elide kunye nokusebenza kakuhle kwe-welding. Ityhubhu ye-T22 encinci yedayamitha isetyenziswa ikakhulu njengobushushu bodonga lwentsimbi ngaphantsi kwe-580 ℃ i-superheater kunye ne-reheater yomphezulu ityhubhu yokufudumeza, njl.P22ityhubhu enkulu yedayamitha isetyenziswa ikakhulu kubushushu bodonga lwentsimbi ayikho ngaphezulu kwe-565 ℃ ibhokisi yokudibanisa i-superheater/reheater kunye nombhobho ophambili womphunga. Ukubunjwa kwayo kweekhemikhali C≤0.15, Si≤0.50, MN0.30-0.60, S≤0.025, P≤0.025, CR1.90-2.60, MO0.87-1.13; Ngaphantsi kwemeko eqhelekileyo yokucaphuka, inqanaba lamandla σs≥280, σb≥450-600 MPa; Plastic delta 20 okanye ngaphezulu.

12Cr1MoVG:GB5310-95 nano standard steel, luxinzelelo oluphezulu lwasekhaya, uxinzelelo oluphezulu lwe-Ultra, i-subcritical power plant boiler boiler superheater, ibhokisi yokuqokelela kunye ne-conduit engundoqo esetyenziswa kakhulu yintsimbi. Ukubunjwa kweekhemikhali kunye neepropati zemishini ye-12Cr1MoV plate iyafana. Ukubunjwa kwayo kweekhemikhali kulula, umxholo we-alloy we-alloy ungaphantsi kwe-2%, kwikhabhoni ephantsi, i-alloy ephantsi ye-pearlescent yentsimbi yentsimbi eshushu. I-Vanadium ingenza i-carbide ezinzileyo ye-VC kunye nekhabhoni, enokwenza i-chromium kunye ne-molybdenum kwintsimbi ekhethwayo ikhona kwi-ferrite, kwaye icothise isantya sokudluliselwa kwe-chromium kunye ne-molybdenum ukusuka kwi-ferrite ukuya kwi-carbide, ukuze intsimbi izinzile kwiqondo lokushisa eliphezulu. Isixa esipheleleyo sezinto ezidibeneyo kule ntsimbi sisiqingatha kuphela se-2.25 CR-1Mo yensimbi esetyenziswa ngokubanzi ngaphandle, kodwa amandla ahlala e-580 ℃ kunye ne-100,000 h yi-40% ephezulu kuneyokugqibela. Ngaphezu koko, inkqubo yokuvelisa ilula kwaye ukusebenza kwe-welding kulungile. Ngethuba nje inkqubo yonyango yokushisa ingqongqo, ukusebenza okubanzi kunye nokusebenza kwamandla okushisa kunokwaneliswa. Owona msebenzi wesikhululo samandla ubonisa ukuba umbhobho ongundoqo we-12Cr1MoV usenokusetyenziswa emva kokusebenza ngokukhuselekileyo kwi-540℃ iiyure eziyi-100,000. Ityhubhu enobubanzi obukhulu isetyenziswa ikakhulu njengebhokisi yokuqokelela kunye nombhobho ophambili weparamitha yomphunga ongaphantsi kwe-565 ℃, kwaye ityhubhu enobubanzi obuncinci isetyenziselwa ityhubhu yokufudumeza umphezulu webhoyila yobushushu bodonga lwentsimbi ngaphantsi kwe-580 ℃.

I-12Cr2MoWVTiB (G102) :Gb5310-95 kwintsimbi, kuphuhliso lwaseTshayina kwiminyaka yoo-1960, ikhabhoni ephantsi, i-alloy ephantsi (ixabiso elincinci lokwahluka) uhlobo lwentsimbi ye-Bainite yamandla ashushu, ukusuka kwiminyaka yoo-1970 yaqukwa kwi-Ministry of Metallurgical Industry standard YB529-70 kwaye ngoku umgangatho kazwelonke, ekupheleni 1980 intsimbi ngokusebenzisa i-Ofisi yoBuphathiswa Metallurgical Industry, i-Ofisi yoBugcisa kunye neSebe lokuchongwa kwamandla ombane ngokudibeneyo. Intsimbi ineempawu ezilungileyo ezibanzi zoomatshini, kwaye amandla ayo obushushu kunye nobushushu benkonzo buphezulu kunezo zentsimbi ezifanayo phesheya, zifikelela kwinqanaba leentsimbi ze-chromium-nickel austenitic kwi-620 ℃. Oku kungenxa yokuba intsimbi iqulethe iindidi ezininzi zezinto ezixutywayo, kwaye yongezwa kwakhona ukuphucula ukuxhathisa i-oxidation yezinto ezifana ne-Cr, i-Si, ngoko ke ubushushu benkonzo ephezulu bunokufikelela kuma-620 ℃. Ukusebenza kwangempela kwesikhululo samandla kubonisa ukuba isakhiwo kunye neempawu zombhobho wensimbi azitshintshi kakhulu emva kokusebenza kwexesha elide. Isetyenziswa ikakhulu njengetyhubhu ye-superheater kunye netyhubhu yokufudumeza kwibhoyila yeparameter ephezulu kakhulu enobushushu bentsimbi ≤620℃. Ukubunjwa kwayo kweekhemikhali C0.08-0.15, Si0.45-0.75, MN0.45-0.65, S≤0.030, P≤0.030, CR1.60-2.10, MO0.50-0.65, V0.28-0.42, TI0.08, TI0.08 -0.18, W0.30-0.55, B0.002-0.008; Ngaphantsi kwemeko eqhelekileyo yokucaphuka, inqanaba lamandla σs≥345, σb≥540-735 MPa; Idelta yeplastiki p 18.

Sa-213t91 (335P91) : Inombolo yentsimbi ngaphakathiI-ASME SA-213(335) umgangatho. Iphuhliswa yi-Rubber Ridge National Laboratory yase-United States yaseMelika, esetyenziswa kumandla enyukliya (inokusetyenziswa nakweminye imiba) amacandelo obushushu obuphezulu bezinto eziphathekayo, intsimbi isekelwe kwintsimbi ye-T9 (9CR-1MO) umda womxholo wekhabhoni, ulawula ngokungqongqo umxholo we-P kunye ne-S kunye nezinye izinto ezishiyekileyo ngaxeshanye, Uhlobo olutsha lwentsimbi ye-ferritic ekwazi ukumelana nobushushu senziwa ngokongeza amanani omkhondo we-0.030-0.070% N, 0.18-0.25 I-% V kunye ne-0.06-0.10% Nb ukuhlangabezana neemfuno zokucocwa kweenkozo. YiI-ASME SA-213intsimbi esemgangathweni yekholamu, eyatshintshwa yafakwaGB5310umgangatho ngo-1995 kwaye ibakala yi-10Cr9Mo1VNb. Umgangatho wamazwe ngamazwe ISO/ DIS9399-2 udweliswe njenge X10 CRMOVNB9-1.

Ngenxa yomxholo wayo ophezulu we-chromium (9%), ukuxhathisa kwe-oxidation, ukumelana nokugqwala, amandla okushisa aphezulu kunye nokuthambekela kwe-non-graphitization kungcono kunezo zentsimbi ephantsi. I-Molybdenum (1%) iphucula ubukhulu becala amandla obushushu obuphezulu kwaye inqanda ukuthambekela okushushu kwentsimbi yechromium. Xa kuthelekiswa ne-T9, i-welding kunye neempawu zokudinwa kwe-thermal ziphuculwe, amandla ahlala kwi-600 ℃ aphindwe kathathu kulawo wokugqibela, kunye ne-high-temperature resistant corrosion resistance ye-T9 (9CR-1Mo) yensimbi igcinwa. Xa kuthelekiswa ne-austenitic stainless steel, i-coefficient yokwandisa incinci, i-thermal conductivity ilungile, kwaye inamandla ahlala ehlala phezulu (afana ne-TP304 austenitic steel ratio, de ubushushu obuqinileyo yi-625 ℃, ubushushu obulinganayo boxinzelelo yi-607 ℃). Ke ngoko, ineepropathi ezibanzi ezibanzi zoomatshini, ubume obuzinzile kunye neepropathi ngaphambi nangemva kokuguga, i-welding elungileyo kunye nepropathi yenkqubo, amandla ahlala ixesha elide kunye nokumelana ne-oxidation. Isetyenziswa ikakhulu kwi-superheater kunye ne-reheater kunye nobushushu bentsimbi ≤650℃ kwibhoyila. Ukubunjwa kwayo kweekhemikhali C0.08-0.12, Si0.20-0.50, MN0.30-0.60, S≤0.010, P≤0.020, CR8.00-9.50, MO0.85-1.05, V0.18-0.25, Al≤04040 , NB0.06-0.10, N0.03-0.07; Ngaphantsi kwemeko eqhelekileyo yokucaphuka, inqanaba lamandla σs≥415, σb≥585 MPa; Plastic delta 20 okanye ngaphezulu.