20G: Ndiyo nhamba yesimbi yakanyorwa yeGB5310-95 (inoenderana nemhando dzekunze: st45.8 muGermany, STB42 muJapan, uye SA106B muUnited States). Ndiyo simbi inonyanya kushandiswa kune boiler simbi mapaipi. Iyo kemikari inoumbwa uye mechanical zvivakwa zvakangofanana neaya e20 mahwendefa esimbi. Simbi ine imwe simba pakudziya kwakajairika uye yepakati nepamusoro tembiricha, yakaderera kabhoni yemukati, zviri nani plastiki uye kuoma, uye yakanaka kutonhora uye inopisa kuumba uye welding zvivakwa. Inonyanya kushandiswa kugadzira high-pressure uye yepamusoro-parameter boiler pipe fittings, superheaters, reheaters, economizers uye masvingo emvura muchikamu chepasi-tembiricha; senge madiki-diameter mapaipi ekupisa pamusoro pepombi ane tembiricha yemudhuri ye ≤500 ℃, uye madziro emvura Mapombi, economizer pombi, nezvimwewo, hombe-dhayamita pombi dzepombi dzehutsi uye misoro (economizer, madziro emvura, yakaderera-tembiricha superheater uye reheater musoro) nemadziro tembiricha ≤450 ℃, uye mapaipi ane yepakati tembiricha ≤450℃ Zvishandiso etc. Kubva carbon steel ichave graphitized kana ikashandiswa kwenguva yakareba pamusoro pe450 ° C, iyo yakareba yenguva yakareba yekupisa tembiricha yechubhu yekudziya inogumira pasi pe450 ° C. Mune ino tembiricha yemhando, kusimba kwesimbi kunogona kusangana nezvinodiwa zve superheaters uye pombi dzehutsi, uye ine yakanaka oxidation kuramba, kuoma kwepurasitiki, kuita welding uye zvimwe zvinopisa uye zvinotonhora zvekugadzirisa zvivakwa, uye inoshandiswa zvakanyanya. Simbi inoshandiswa muchoto cheIranian (zvichireva chikamu chimwe chete) ipombi yekusuma tsvina (huwandu hwacho matani makumi maviri nemasere), pombi yekusuma mvura yemuutsi (matani makumi maviri), pombi yekubatanidza chiutsi (matani makumi maviri nematanhatu), uye musoro wehupfumi. (8 matani). ), desuperheating water system (5 matani), imwe yasara inoshandiswa sesimbi yakati sandara uye zvinhu zveboom (anenge matani 86).

SA-210C (25MnG): Ndiyo giredhi resimbi muASME SA-210 chiyero. Iyo kabhoni-manganese simbi diki-dhiyamita chubhu ye boilers uye superheaters, uye itis pearlite kupisa-simba simbi. China yakaiisa kuGB5310 muna 1995 ndokuitumidza kuti 25MnG. Chimiro chayo chemakemikari chiri nyore kunze kwehuwandu hwekabhoni uye manganese, iyo yose yakafanana ne20G, saka simba rayo regoho rinenge 20% yakakwirira kupfuura 20G, uye plastiki yayo uye kuoma kwakaenzana ne20G. Simbi ine nyore kugadzira muitiro uye yakanaka inotonhora uye inopisa workability. Kuishandisa panzvimbo ye20G kunogona kuderedza kukora kwemadziro uye kushandiswa kwezvinhu, Zvichakadaro kunatsiridza kupisa kwekushisa kwebhailer. Chikamu chekushandisa uye tembiricha yekushandisa zvakangofanana ne20G, inonyanya kushandiswa kumadziro emvura, economizer, yakaderera tembiricha superheater uye zvimwe zvikamu zvine tembiricha yekushanda yakaderera kupfuura 500 ℃.

SA-106C: Ndiyo giredhi resimbi muASME SA-106 chiyero. Iyo kabhoni-manganese simbi pombi yehombe-caliber boilers uye superheaters yekupisa kwakanyanya. Chimiro chayo chemakemikari chiri nyore uye chakafanana ne20G carbon steel, asi kabhoni uye manganese zvinyorwa zvakakwirira, saka simba rayo regoho rinenge 12% yakakwirira kupfuura ye20G, uye plastiki yayo uye kuoma hazvina kuipa. Simbi ine nyore kugadzira muitiro uye yakanaka inotonhora uye inopisa workability. Kuishandisa kutsiva 20G misoro (economizer, madziro emvura, yakaderera-temperature superheater uye reheater musoro) inogona kuderedza ukobvu hwemadziro neanenge 10%, iyo inogona kuchengetedza mari yezvinhu, kuderedza welding basa, uye kugadzirisa misoro Musiyano wekushushikana pakutanga-up. .

15Mo3 (15MoG): Ipombi yesimbi muDIN17175 chiyero. Iyo idiki-diameter kabhoni-molybdenum simbi chubhu ye boiler superheater, Zvichakadaro iri pearlitic kupisa-simba simbi. China yakaiisa kuGB5310 muna 1995 ndokuitumidza kuti 15MoG. Mushonga wayo wemakemikari uri nyore, asi une molybdenum, saka uchichengetedza maitiro akafanana nekabhoni simbi, simba rayo rekupisa riri nani pane kabhoni simbi. Nekuda kwekuita kwayo kwakanaka uye mutengo wakaderera, yakagamuchirwa zvakanyanya nenyika dzepasirese. Nekudaro, iyo simbi ine maitiro ekuita graphitization mukushanda kwenguva refu pakupisa kwakanyanya, saka tembiricha yekushandiswa kwayo inofanirwa kudzorwa pazasi 510 ℃, uye huwandu hweAl hwakawedzerwa panguva yekunyungudika hunofanira kugumira kudzora uye kunonoka graphitization process. Iyi pombi yesimbi inonyanya kushandiswa kune yakaderera-tembiricha superheaters uye yakaderera-tembiricha reheater, uye tembiricha yemadziro iri pazasi 510 ℃. Chimiro chayo chemakemikari ndeyeC0.12-0.20, Si0.10-0.35, Mn0.40-0.80, S≤0.035, P≤0.035, Mo0.25-0.35; yakajairika moto simba mwero σs≥270-285, σb≥450- 600 MPa; Plasticity δ≥22.

SA-209T1a (20MoG): Ndiyo giredhi resimbi muASME SA-209 mwero. Idiki-dhayamita kabhoni-molybdenum simbi chubhu yemaboilers uye superheaters, uye iri pearlite kupisa-simba simbi. China yakaiisa kuGB5310 muna 1995 ndokuitumidza kuti 20MoG. Mushonga wayo wemakemikari uri nyore, asi une molybdenum, saka uchichengetedza maitiro akafanana nekabhoni simbi, simba rayo rekupisa riri nani pane kabhoni simbi. Nekudaro, iyo simbi ine tsika yekuita graphitize mukushanda kwenguva refu pakupisa kwakanyanya, saka tembiricha yekushandiswa kwayo inofanirwa kudzorwa pazasi 510 ℃ uye kudzivirira kupfuura-tembiricha. Panguva yekunyungudika, huwandu hweAl hwakawedzerwa hunofanira kugumira kudzora uye kunonoka kuita graphitization. Iyi pombi yesimbi inonyanya kushandiswa kune zvikamu zvakaita semadziro akanyoroveswa nemvura, superheaters uye reheaters, uye tembiricha yemadziro iri pazasi 510 ℃. Chimiro chayo chemakemikari ndeyeC0.15-0.25, Si0.10-0.50, Mn0.30-0.80, S≤0.025, P≤0.025, Mo0.44-0.65; normalized simba level σs≥220, σb≥415 MPa; plastiki δ≥30.

15CrMoG: ndeye GB5310-95 simbi yegiredhi (inowirirana ne1Cr-1 / 2Mo uye 11 / 4Cr-1 / 2Mo-Si masimbi anoshandiswa zvakanyanya munyika dzakasiyana-siyana pasi rose). Iyo chromium yemukati yakakwira kupfuura ye12CrMo simbi, saka ine Yakakwira yekupisa simba. Kana tembiricha yadarika 550 ℃, simba rayo rekupisa rinodzikiswa zvakanyanya. Kana ichinge ichishandiswa kwenguva yakareba pa500-550 ℃, graphitization haizoitiki, asi carbide spheroidization uye kugoverwazve kwezvinhu zvealloying zvichaitika, izvo zvese zvinotungamira mukupisa kwesimbi. Simba racho rakaderedzwa, uye simbi ine yakanaka kuzorora kupikisa pa450 ° C. Kugadzira kwayo pombi uye welding process performance yakanaka. Inonyanya kushandiswa seyakakwirira uye yepakati kumanikidza mapombi ehutsi uye misoro ine chiutsi parameters pazasi 550 ℃, superheater machubhu ane chubhu madziro tembiricha iri pasi pe560 ℃, etc. Kemikari yayo 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; chiyero chesimba σs≥ mune yakajairika mamiriro ekutsamwa 235, σb≥440-640 MPa; Plasticity δ≥21.

T22 (P22), 12Cr2MoG: T22 (P22) ndeye ASME SA213 (SA335) yakajairika zvinhu, izvo zvakanyorwa muChina GB5310-95. MuCr-Mo simbi yakatevedzana, simba rayo rinopisa rinenge rakakwirira, uye simba rayo rekutsungirira uye kushushikana kunobvumirwa patembiricha imwechete yakatokwira kupfuura iyo ye9Cr-1Mo simbi. Nokudaro, inoshandiswa mune dzimwe nyika inopisa simba, simba renyukireya uye midziyo yekumanikidza. Wide range of applications. Asi hupfumi hwayo hwehunyanzvi hahuna kunaka seyenyika yangu 12Cr1MoV, saka haishandiswe mudzimba dzekupisa magetsi boiler kugadzira. Inogamuchirwa chete kana mushandisi aikumbira (kunyanya kana yakagadzirwa uye inogadzirwa zvinoenderana neASME yakatarwa). Iyo simbi haina hanya nekupisa kurapwa, ine yakakwirira yakasimba yepurasitiki uye yakanaka welding performance. T22 madiki-diameter machubhu anonyanya kushandiswa sekudziya pamusoro pemachubhu epamusoro uye anopisa ane simbi yemadziro tembiricha iri pazasi 580 ℃, nepo P22 machubhu mahombe-diameter anonyanya kushandiswa kune superheater / reheater majoini ane simbi yemadziro tembiricha isingapfuure 565 ℃. Bhokisi uye main steam pombi. Chimiro chayo chemakemikari ndeye C≤0.15, Si≤0.50, Mn0.30-0.60, S≤0.025, P≤0.025, Cr1.90-2.60, Mo0.87-1.13; chiyero chesimba σs≥280, σb≥ pasi pekupisa kwakanaka 450-600 MPa; Plasticity δ≥20.

12Cr1MoVG: Iyo GB5310-95 yakanyorwa simbi, iyo inoshandiswa zvakanyanya mudzimba yakakwirira-kudzvanywa, yekupedzisira-yakanyanya kudzvanywa, uye subcritical power station boiler superheaters, misoro uye mapombi makuru. Iko kuumbwa kwemakemikari uye michina zvivakwa zvakangofanana neaya e12Cr1MoV sheet. Kemikari yaro inoumbwa iri nyore, iyo yakazara alloy yemukati isingasviki 2%, uye iyo yakaderera-kabhoni, yakaderera-alloy pearlite inopisa-simba simbi. Pakati pavo, vanadium inogona kuumba yakagadzika carbide VC ine kabhoni, iyo inogona kuita kuti chromium uye molybdenum musimbi zvivepo zvakanyanya muferrite, uye inonoke kumhanyisa kumhanya kwechromium uye molybdenum kubva kune ferrite kuenda kucarbide, ichiita simbi Inowedzera. yakagadzikana pakupisa kukuru. Huwandu hwezvinhu zvealloying musimbi iyi ihafu chete ye2.25Cr-1Mo simbi inoshandiswa zvakanyanya kunze kwenyika, asi kutsungirira kwayo kusimba pa580 ℃ uye 100,000 h ndeye 40% yakakwirira kupfuura yekupedzisira; uye maitiro ayo ekugadzira ari nyore, uye kuita kwayo welding kwakanaka. Chero bedzi nzira yekurapa yekupisa yakasimba, inogutsa kushanda kwese uye simba rekupisa rinogona kuwanikwa. Kushanda chaiko kwechiteshi chemagetsi kunoratidza kuti pombi huru ye12Cr1MoV inogona kuramba ichishandiswa mushure memaawa 100,000 ekushanda kwakachengeteka pa540°C. Mapaipi mahombe-diameter anonyanya kushandiswa semisoro uye mapombi makuru ane chiutsi maparamita ari pazasi 565 ℃, uye mapaipi madiki-diameter anoshandiswa kubikira kupisa pamusoro pepombi nesimbi madziro tembiricha pazasi 580 ℃.

12Cr2MoWVTiB (G102): Igiredhi resimbi muGB5310-95. Iyo yakaderera-kabhoni, yakaderera-alloy (idiki yakawanda yakawanda) bainite inopisa-simba simbi yakagadzirwa uye yakagadziridzwa nenyika yangu muma1960. Yakaverengerwa muBazi reMetallurgy Standard YB529 kubva kuma1970s -70 uye yazvino chiyero chenyika. Pakupera kwa1980, simbi yakapfuura kuongororwa kweBazi reMetallurgy, Ministry of Machinery and Electric Power. Simbi ine yakanaka yakazara mechanicha zvivakwa, uye simba rayo rekupisa uye tembiricha yebasa inodarika iyo yesimbi dzakafanana dzekunze, inosvika pamwero weimwe chromium-nickel austenitic simbi pa620 ℃. Izvi zvinodaro nekuti kune akawanda marudzi ealloying zvinhu zviri musimbi, uye zvinhu zvakaita seCr, Si, nezvimwe zvinovandudza oxidation resistance inowedzerwawo, saka tembiricha yepamusoro sevhisi inogona kusvika 620 ° C. Kushanda chaiko kwechiteshi chemagetsi kwakaratidza kuti kurongeka uye kushanda kwepombi yesimbi hazvina kuchinja zvakanyanya mushure mekushanda kwenguva refu. Inonyanya kushandiswa senge superheater chubhu uye reheater chubhu ye super high parameter boiler ine tembiricha yesimbi ≤620 ℃. Chimiro chayo chemakemikari ndeyeC0.08-0.15, 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; nhanho yesimba σs≥345, σb≥540-735 MPa mune yakanaka tempering mamiriro; plastiki δ≥18.

SA-213T91 (335P91): Ndiyo giredhi resimbi muASME SA-213 (335) chiyero. Icho chinhu chepamusoro-tembiricha yekumanikidza zvikamu zvesimba renyukireya (inoshandiswawo mune dzimwe nzvimbo) yakagadziriswa neRubber Ridge National Laboratory yeUnited States. Iyo simbi yakavakirwa paT9 (9Cr-1Mo) simbi, uye inogumira kune yepamusoro uye yakaderera miganho yekabhoni. , Kunyange zvakanyanya kudzora zviri mukati mezvinhu zvakasara zvakaita seP uye S, mucherechedzo we0.030-0.070% weN, mutsara weiyo yakasimba carbide inogadzira zvinhu zve 0.18-0.25% yeV uye 0.06-0.10% yeNb inowedzerwa kuwana kunatswa Rudzi rutsva rweferritic kupisa-resistant alloy simbi inoumbwa nezviyo zvinodiwa; ndiyo ASME SA-213 yakanyorwa simbi giredhi, uye China yakasimwa simbi kune GB5310 chiyero muna 1995, uye giredhi rakaiswa se10Cr9Mo1VNb; uye chiyero chepasi rose ISO/ DIS9329-2 chakanyorwa seX10 CrMoVNb9-1. Nekuda kweiyo yakakwira chromium yemukati (9%), yayo oxidation kuramba, corrosion resistance, high tembiricha simba uye non-graphitization maitiro zviri nani pane yakaderera alloy simbi. Iyo element molybdenum (1%) inonyanya kunatsiridza yakanyanya tembiricha simba uye inhibits chromium simbi. Kupisa brittleness maitiro; Kuenzaniswa neT9, yakavandudza welding performance uye kupisa kuneta kwekuita, kusimba kwayo pa600 ° C kukapetwa katatu kune yekupedzisira, uye inochengetedza yakanakisa tembiricha yekupisa ngura yeT9 (9Cr-1Mo) simbi; Kana ichienzaniswa neaustenitic stainless simbi, ine diki yekuwedzera coefficient, yakanaka thermal conductivity, uye yakakwirira kutsungirira simba (somuenzaniso, kana ichienzaniswa neTP304 austenitic simbi, kumirira kusvika kusimba kwakasimba kuri 625 ° C, uye yakaenzana tembiricha yekushushikana i607 ° C) . Naizvozvo, ine yakanaka yakazara mechanicha zvimiro, yakagadzikana chimiro uye mashandiro pamberi uye mushure mekuchembera, yakanaka welding performance uye process performance, yakakwirira kusimba uye oxidation kuramba. Inonyanya kushandiswa kune superheaters uye reheaters nesimbi tembiricha ≤650 ℃ mumaboilers. Chimiro chayo chemakemikari ndeyeC0.08-0.12, 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; nhanho yesimba σs≥415, σb≥585 MPa mune yakanaka tempering mamiriro; plastiki δ≥20.