SA302GrB icyuma cyerekana icyapa kirambuye

1. Ibiranga imikorere, ikoreshwa nibishobora gukoreshwa
SA302GrB ni icyuma gike cyane-manganese-molybdenum-nikel alloy icyuma cyerekana icyuma cya ASTM A302 kandi cyagenewe ibikoresho byo mu bushyuhe bwo hejuru hamwe n’umuvuduko ukabije nkubwato bwumuvuduko na boiler. Ibikorwa byingenzi biranga imikorere ikubiyemo:
Ibikoresho byiza bya mashini: imbaraga zingana ≥550 MPa, imbaraga zitanga ≥345 MPa, kurambura ≥18%, hamwe ningaruka zikomeye zujuje ubuziranenge bwa ASTM A20.
Imikorere myiza yo gusudira: ishyigikira intoki za arc gusudira, gusudira arc kurengerwa, gusudira gazi ikingira hamwe nibindi bikorwa, hamwe no gushyushya no gushyushya ubushyuhe birasabwa nyuma yo gusudira kugirango birinde gucika.
Kurwanya ubushyuhe bwinshi no kurwanya ruswa: Iguma ihagaze neza mubushyuhe bwo gukora bwa -20 ℃ kugeza 450 ℃, bikwiranye nibitangazamakuru byangirika nka acide na alkalis.
Imbaraga zoroheje n'imbaraga nyinshi: Binyuze mu gishushanyo mbonera gike, mugihe ugabanya uburemere bwimiterere, ubushobozi bwo gutwara umuvuduko uratera imbere kandi igiciro cyo gukora ibikoresho kikagabanuka.
Ibihe byakoreshwa: ibikoresho byingenzi mubijyanye na peteroli, amashanyarazi, amashanyarazi, ingufu za kirimbuzi, kubyara amashanyarazi, nibindi, nka reaction, guhinduranya ubushyuhe, ibigega bya serefegitura, imiyoboro y’ingufu za kirimbuzi, ingoma zitetse, nibindi.
2. Ibice byingenzi, imikorere yimikorere nubukanishi
Ibigize imiti (gusesengura gushonga):
C (karubone): ≤0,25% (≤0,20% iyo umubyimba ≤25mm)
Mn (manganese): 1.07% -1,62% (1.15% -1,50% iyo umubyimba ≤25mm)
P (fosifore): ≤0.035% (ibipimo bimwe bisaba ≤0.025%)
S (sulfure): ≤0.035% (ibipimo bimwe bisaba ≤0.025%)
Si (silicon): 0.13% -0.45%
Mo (molybdenum): 0.41% -0,64% (ibipimo bimwe bisaba 0.45% -0.60%)
Ni (nikel): 0,40% -0,70% (uburebure bumwe)
Ibipimo by'imikorere:
Imbaraga zingana: 550-690 MPa (80-100 ksi)
Imbaraga zitanga umusaruro: 45345 MPa (50 ksi)
Kurambura: ≥15% iyo uburebure bwa gauge ari 200mm, ≥18% mugihe uburebure bwa 50mm
Uburyo bwo kuvura ubushyuhe: Gutanga muburyo busanzwe, busanzwe + ubushyuhe cyangwa bugenzurwa na reta, kuvura bisanzwe birasabwa mugihe umubyimba> 50mm.
Ibyiza bya mashini:
Kuringaniza imbaraga nyinshi no gukomera: Kuri 550-690 MPa imbaraga zingana, iracyakomeza kurambura ≥18%, byemeza ko ibikoresho bifite ubushobozi bwo kurwanya kuvunika.
Imiterere myiza yintete: Yujuje ingano nziza yubunini bwibisabwa bya A20 / A20M kandi bizamura ubukana bwubushyuhe buke.
3. Imanza zo gusaba hamwe nibyiza
Inganda zikomoka kuri peteroli:
Urubanza rusaba: Uruganda rukora peteroli rukoresha ibyuma bya SA302GrB kugirango rukore reaction yumuvuduko ukabije, umaze imyaka 5 ukora kuri 400 ℃ na 30 MPa udafite ibice cyangwa ngo uhindurwe.
Ibyiza: Kurwanya cyane kwangirika kwa hydrogène, hamwe na 100% ultrasonic inenge yo gusudira irinda umutekano ibikoresho.
Umuriro w'amashanyarazi ya kirimbuzi:
Ikibazo cyo gusaba: Ubwato bwumuvuduko wuruganda rukora ingufu za kirimbuzi bwakoresheje icyuma cya SA302GrB gifite uburebure bwa 120mm. Binyuze mubisanzwe + kuvura ubushyuhe, kurwanya imirasire byongerewe 30%.
Ibyiza: Ibirimo bya Molybdenum 0.45% -0,60% birabuza kwinjiza neutron irradiation kandi byujuje ibisabwa na ASME.
Umuriro w'amashanyarazi:
Urubanza rusaba: Ingoma itetse cyane ikoresha icyuma cya SA302GrB, ikora kuri 540 ℃ na 25 MPa, kandi ubuzima bwayo bukongerwa kugeza ku myaka 30.
Ibyiza: Ubushyuhe bwo hejuru imbaraga zigihe gito zigera kuri 690 MPa, yoroshye 15% kuruta ibyuma bya karubone kandi bigabanya gukoresha ingufu.
Umuriro w'amashanyarazi:
Ikibazo cyo gusaba: Umuyoboro w’amazi ufite umuvuduko mwinshi wa sitasiyo y’amashanyarazi wakira icyuma cya SA302GrB kandi ugatsinda ibizamini by’umunaniro 200.000 mu bidukikije -20 ℃ kugeza kuri 50 ℃.
Ibyiza: Ubushyuhe buke bw’ubushyuhe (≥27 J kuri -20 ℃) ​​bujuje ibisabwa bikabije by’ikirere cy’imisozi.
4. Umutekano, kurengera ibidukikije n'akamaro k'inganda
Umutekano:
Ikizamini cya ASTM A20 cyatsinzwe (V-notch energy energy ≥34 J kuri -20 ℃), byemeza ko ibyago byo kuvunika ubushyuhe buke bitarenze 0.1%.
Ubukomezi bwa zone yibasiwe nubushyuhe bwa weld ni 50350 HV kugirango birinde hydrogène iterwa.
Kurengera ibidukikije:
Molybdenum irimo 0.41% -0,64% igabanya ikoreshwa rya nikel kandi igabanya imyuka ihumanya ikirere.
Yubahiriza amabwiriza ya EU RoHS kandi ibuza gukoresha ibintu byangiza nka gurş na mercure.
Akamaro mu nganda:
Ifite 25% byisoko ryicyuma cyumuvuduko wisi ku isoko kandi nikintu cyingenzi muguhuza ingufu za kirimbuzi nibikoresho bya peteroli.
Gushyigikira ubushyuhe bwagutse bwa porogaramu kuva kuri -20 ℃ kugeza kuri 450 and, kandi igateza imbere ibikoresho bikora 15% -20% ugereranije nicyuma gakondo.
Umwanzuro
Icyuma cya SA302GrB cyahindutse ibikoresho byingenzi byinganda zigezweho zubushyuhe bwo hejuru hamwe nibikoresho byumuvuduko mwinshi kubera imbaraga nyinshi, kurwanya ruswa no gusudira byoroshye. Uburinganire bw’umutekano, kurengera ibidukikije no gukoresha neza ibiciro bituma bidasimburwa mu bijyanye n’ingufu za kirimbuzi, peteroli, ingufu, n’ibindi, kandi bitera iterambere ry’ibikoresho by’inganda bigana ku cyerekezo cyiza kandi gifite umutekano.