15Mo3 (15MoG): Ipombi yesimbi ine mwero weDIN17175. Ipombi yesimbi ine dhayamita diki yecarbon molybdenum yekubikira nekupisa, uye simbi ine simba rinopisa remhando yepearlescent. Muna 1995, yakasimwa kuti ishandiswe.GB5310uye yakatumidzwa zita rekuti 15MoG. Kuumbwa kwayo kwemakemikari kuri nyore, asi ine molybdenum, saka ine simba rekupisa riri nani pane simbi yekabhoni uku ichiramba ichiita zvakafanana nesimbi yekabhoni. Nekuda kwekushanda kwayo kwakanaka, mutengo wayo wakachipa, yave ichishandiswa zvakanyanya pasi rose. Zvisinei, simbi iyi ine katsika kekuita graphitization mushure mekushanda kwenguva refu pakupisa kwakanyanya, saka tembiricha yayo yekushanda inofanira kudzorwa pasi pe510℃, uye huwandu hweAl inowedzerwa mukunyungudutsa hunofanira kuganhurirwa kudzora nekunonotsa maitiro egraphitization. Chubhu iyi yesimbi inonyanya kushandiswa kune superheater yekupisa yakaderera uye reheater yekupisa yakaderera. Tembiricha yemadziro iri pasi pe510℃. Kuumbwa kwayo kwemakemikari C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Simba rakajairika σs≥270-285, σb≥450-600 MPa; Plastiki delta 22 kana kupfuura.

15CrMoG:GB5310-95 simbi (inoenderana nesimbi ye1CR-1/2Mo uye 11/4CR-1/2MO-Si inoshandiswa zvakanyanya pasi rose), huwandu hwayo hwechromium hwakakwira kupfuura simbi ye12CrMo, saka ine simba rekupisa rakakwirira pa500-550℃. Kana tembiricha ikapfuura 550℃, simba rekupisa resimbi rinoderera zvakanyanya. Kana ikashanda kwenguva yakareba pa500-550℃, graphitization haiitike, asi carbide spheroidization uye alloying element redistribution zvinoitika, izvo zvinotungamira kudzikira kwesimba rekupisa resimbi. Simbi iyi inodzivirira kuzorora zvakanaka pa450℃. Kugadzira kwayo mapaipi uye maitiro ekuwelding kwakanaka. Inonyanya kushandiswa semugero wemhepo une simba repamusoro nepakati uye bhokisi rekubatanidza rine paramita yemhepo ine simba riri pasi pe550℃, chubhu yekupisa ine tembiricha yemadziro iri pasi pe560℃, nezvimwewo. Muumbirwo wayo wemakemikari C0.12-0.18, Si0.17-0.37, MN0.40-0.70, S≤0.030, P≤0.030, CR0.80-1.10, MO0.40-0.55; Pasi pemamiriro ezvinhu akajairwa ekudziya, simba remhepo σs≥235, σb≥440-640 MPa; Plastic delta p 21.

T22 (P22), 12Cr2MoG: T22 (P22variASME SA213 (SA335) zvinhu zvekodhi, izvo zvinosanganisirwa muGB5310-95. MuCR-Mo steel series, simba rayo rekupisa rakakwirira, simba rayo rinogara kwenguva refu uye kushushikana kunobvumirwa kupfuura 9CR-1Mo steel kwakanyanya, saka inoshandiswa zvakanyanya mumagetsi ekupisa ekunze, simba renyukireya uye midziyo yekumanikidza. Zvisinei, hupfumi hwayo hwehunyanzvi hwakaderera pane 12Cr1MoV yedu, saka haishandiswi zvakanyanya mukugadzira mabhoyira emagetsi ekupisa epamba. Shandisa chete kana zvichidikanwa (kunyanya kana yakagadzirwa uye yakagadzirwa zvinoenderana neASME code). Simbi haina hanya nekupisa uye ine plasticity yakasimba uye inoshanda zvakanaka pakuwelda. T22 small dayameter tube inonyanya kushandiswa sesimbi yemadziro tembiricha iri pasi pe580℃ superheater uye reheater heating surface tube, nezvimwewo.P22Chubhu ine dhayamita hombe inonyanya kushandiswa mubhokisi resimbi rekubatanidza madziro kwete kupfuura 565℃ superheater/reheater uye pombi huru yemhepo. Muumbi wayo wemakemikari C≤0.15, Si≤0.50, MN0.30-0.60, S≤0.025, P≤0.025, CR1.90-2.60, MO0.87-1.13; Kana mamiriro ekunze akajairwa ekupisa, simba remagetsi σs≥280, σb≥450-600 MPa; Plastiki delta 20 kana kupfuura.

12Cr1MoVG:GB5310-95 nano standard steel, ndiyo inodzvinyirirwa zvakanyanya mumba, inodzvinyirirwa zvakanyanya, ine simba remagetsi risingakoshi, inodziya zvakanyanya, bhokisi rekuunganidza uye simbi inoshandiswa zvakanyanya. Makemikari uye hunhu hwemakanika hweplate ye12Cr1MoV zvakafanana. Makemikari ayo ari nyore, huwandu hwese hwe alloy huri pasi pe2%, kune simbi ine kabhoni shoma, ine alloy yakaderera pearlescent. Vanadium inogona kugadzira carbide VC yakagadzikana nekabhoni, iyo inogona kuita kuti chromium ne molybdenum musimbi zvivepo mu ferrite, uye inoderedza mwero wekutamisa chromium ne molybdenum kubva ku ferrite kuenda ku carbide, kuitira kuti simbi ive yakasimba pakupisa kwakanyanya. Huwandu hwezvinhu zvakasanganiswa musimbi iyi ihafu chete yesimbi ye2.25 CR-1Mo inoshandiswa zvakanyanya kunze kwenyika, asi simba rakasimba pa580℃ ne100,000 h rakakwirira ne40% kupfuura rekupedzisira. Uyezve, maitiro ekugadzira ari nyore uye mashandiro ekushongedza akanaka. Chero bedzi nzira yekurapa kupisa iri yakasimba, kushanda kwakakwana uye kushanda kwesimba rekupisa kunogona kugutsa. Kushanda chaiko kwechiteshi chemagetsi kunoratidza kuti pombi huru yemhepo ye12Cr1MoV inogona kushandiswa mushure mekushanda kwakachengeteka pa540℃ kwemaawa 100,000. Chubhu hombe inoshandiswa zvakanyanya sebhokisi rekuunganidza uye nzira huru yemhepo yemhepo yeparameter yemhepo iri pasi pe565℃, uye chubhu diki inoshandiswa chubhu yekupisa pamusoro pebhoyira yetembiricha yemadziro esimbi iri pasi pe580℃.

12Cr2MoWVTiB (G102):Gb5310-95 musimbi, yekuvandudza kweChina muma1960, simbi ine kabhoni shoma, ine alloy shoma (yakawanda kusiyana) yeBainite type hot strength steel, kubva kuma1970 yakabatanidzwa muMinistry of Metallurgical Industry standard YB529-70 uye ikozvino standard yenyika, pakupera kwa1980 simbi kuburikidza neMinistry of Metallurgical Industry, Ministry of Machinery uye Ministry of electric power joint identification. Simbi iyi ine hunhu hwakanaka hwemakanika, uye simba rayo rekupisa uye tembiricha yebasa yakakwira kupfuura yesimbi dzakafanana dziri kunze kwenyika, ichisvika padanho remamwe simbi e chromium-nickel austenitic pa620℃. Izvi zvinodaro nekuti simbi iyi ine mhando dzakawanda dzezvinhu zvinosanganisa, uye yakawedzerwawo kuvandudza oxidation resistance yezvinhu zvakaita seCr, Si, saka tembiricha yepamusoro yebasa inogona kusvika 620℃. Kushanda chaiko kwechiteshi chemagetsi kunoratidza kuti chimiro uye hunhu hwepombi yesimbi hazvichinje zvakanyanya mushure mekushanda kwenguva refu. Inonyanya kushandiswa sechubhu ye superheater uye chubhu ye reheater ye ultra-high parameter boiler ine tembiricha yesimbi ≤620℃. Muumbirwo wayo wemakemikari 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, TI0.08-0.18, W0.30-0.55, B0.002-0.008; Kana mamiriro ekudziya akajairwa, simba remagetsi σs≥345, σb≥540-735 MPa; Plastic delta p 18.

Sa-213t91 (335P91): Nhamba yesimbi iri muASME SA-213(335) standard. Yakagadzirwa neRubber Ridge National Laboratory yeUnited States of America, inoshandiswa musimba renyukireya (inogona kushandiswawo mune zvimwe zvinhu) zvikamu zvekumanikidzwa kwekupisa kwakanyanya kwezvinhu, simbi yakavakirwa pasimbi yeT9 (9CR-1MO), muganho wehuwandu hwekabhoni, inodzora zvakanyanya zviri mukati meP neS nezvimwe zvinhu zvakasara panguva imwe chete. Rudzi rutsva rwesimbi yeferritic inodzivirira kupisa yakagadzirwa nekuwedzera huwandu hushoma hwe0.030-0.070% N, 0.18-0.25% V uye 0.06-0.10% Nb kuti isangane nezvinodiwa zvekunatswa kwezviyo.ASME SA-213simbi yakajairika yembiru, iyo yakasimwa muGB5310standard muna 1995 uye giredhi i10Cr9Mo1VNb. Standard yepasi rose ISO/ DIS9399-2 yakanyorwa seX10 CRMOVNB9-1.

Nekuda kwehuwandu hwayo hwe chromium (9%), kuramba kwayo oxidation, kuramba ngura, simba rekupisa kwakanyanya uye kusaita graphitization zviri nani pane zvesimbi isina alloy yakawanda. Molybdenum (1%) inonyanya kuvandudza simba rekupisa kwakanyanya uye inodzivirira kupisa kwesimbi ye chromium. Kana ichienzaniswa neT9, hunhu hwekuwelda uye kupisa hunovandudzika, simba rinogara pa600℃ rakapetwa katatu pane rekupedzisira, uye kuramba ngura kwakanyanya pakupisa kwakanyanya kwesimbi yeT9 (9CR-1Mo) kunochengetwa. Kana ichienzaniswa nesimbi isina ngura ye austenitic, kuwedzera kwekuwedzera kudiki, kupisa kwakanaka, uye ine simba rinogara kwenguva refu (senge neTP304 austenitic steel ratio, kusvika tembiricha yakasimba yasvika 625℃, tembiricha yakaenzana yekumanikidzwa yasvika 607℃). Saka, ine hunhu hwakakwana hwemakanika, chimiro chakagadzikana uye hunhu husati hwachembera uye mushure mekukwegura, hunhu hwakanaka hwekuwelda uye hwekugadzirisa, simba rinogara kwenguva refu uye kuramba oxidation. Inonyanya kushandiswa kune superheater uye reheater ine tembiricha yesimbi ≤650℃ muboiler. Kuumbwa kwayo kwemakemikari 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≤0.04, NB0.06-0.10, N0.03-0.07; Kana yagara iri muchimiro chekudziya, simba rayo σs≥415, σb≥585 MPa; Plastiki delta 20 kana kupfuura.