1. Àgwà arụmọrụ, ojiji na ọnọdụ ndị metụtara ya
SA302GrB bụ efere ígwè manganese-molybdenum-nickel alloy dị obere nke nwere ike dị elu nke dị na ọkọlọtọ ASTM A302 ma e mere ya maka akụrụngwa dị elu na nke nwere ike dị elu dịka arịa nrụgide na ihe na-agba mmiri. Isi njirimara arụmọrụ ya gụnyere:
Njirimara igwe dị mma: ike nrụgide ≥550 MPa, ike mmepụta ≥345 MPa, ogologo ≥18%, na ike mmetụta ruru ọkọlọtọ ASTM A20.
Ọrụ ịgbado ọkụ dị mma: na-akwado ịgbado ọkụ aka, ịgbado ọkụ arc mmiri, ịgbado ọkụ gas na usoro ndị ọzọ, a na-achọkwa ikpo ọkụ tupu oge eruo na ọgwụgwọ okpomọkụ mgbe ịgbado ọkụ gasịrị iji gbochie mgbawa.
Nguzogide okpomọkụ dị elu na nguzogide nchara: Ọ na-adịgide adịgide n'ime oke okpomọkụ ọrụ nke -20℃ ruo 450℃, nke dabara adaba maka gburugburu mgbasa ozi na-emebi emebi dịka asịd na alkalis.
Ike dị fechaa ma dị elu: Site na nhazi alloy dị ala, ebe ọ na-ebelata ibu nke ihe owuwu ahụ, a na-eme ka ikike ibu nrụgide ka mma ma belata ọnụ ahịa nrụpụta akụrụngwa.
Ihe ndị dị mkpa: akụrụngwa dị mkpa n'ọhịa nke petrochemicals, boilers nke ụlọ ọrụ ike, ụlọ ọrụ ike nuklia, mmepụta ike mmiri, wdg, dị ka reactors, ihe mgbanwe okpomọkụ, tankị gburugburu, arịa nrụgide reactor nuklia, drum boiler, wdg.
2. Isi ihe dị na ya, paramita arụmọrụ na ihe ndị dị na ya
Ihe mejupụtara kemịkalụ (nnyocha agbaze):
C (kabọn): ≤0.25% (≤0.20% mgbe ọkpụrụkpụ ya ruru ≤25mm)
Mn (manganese): 1.07%-1.62% (1.15%-1.50% mgbe ọkpụrụkpụ ya ruru ≤25mm)
P (phosphorus): ≤0.035% (ụfọdụ ụkpụrụ chọrọ ≤0.025%)
S (sọlfọ): ≤0.035% (ụfọdụ ụkpụrụ chọrọ ≤0.025%)
Si (silikọn): 0.13%-0.45%
Mo (molybdenum): 0.41%-0.64% (ụfọdụ ọkọlọtọ chọrọ 0.45%-0.60%)
Ni (nickel): 0.40%-0.70% (oke ọkpụrụkpụ ụfọdụ)
Paramita arụmọrụ:
Ike nrụgide: 550-690 MPa (80-100 ksi)
Ike mmepụta: ≥345 MPa (50 ksi)
Ogologo: ≥15% mgbe ogologo nha bụ 200mm, ≥18% mgbe ogologo nha bụ 50mm
Ọnọdụ ọgwụgwọ okpomọkụ: Mbupu na nhazi, nhazi + nhazi ma ọ bụ ọnọdụ mpịakọta a na-achịkwa, a chọrọ nhazi ọgwụgwọ mgbe ọkpụrụkpụ karịrị 50mm.
Uru arụmọrụ igwe:
Nha nke ike na ike dị elu: N'ike nrụgide 550-690 MPa, ọ ka na-agbatị ≥18%, na-eme ka akụrụngwa ahụ nwee ike iguzogide mgbawa gbawara agbawa.
Nhazi ọka dị mma: Na-emezu ihe achọrọ maka nha ọka dị mma nke ọkọlọtọ A20/A20M ma na-eme ka ike mmetụta dị ala dịkwuo mma.
3. Ihe gbasara ngwa na uru ya
Ụlọ ọrụ Petrochemical:
Ihe eji eme ihe: Ụlọ ọrụ petrochemical na-eji efere ígwè SA302GrB emepụta ihe nrụpụta nrụgide dị elu, nke na-arụ ọrụ ruo afọ ise na okpomọkụ 400℃ na 30 MPa na-enweghị mgbawa ma ọ bụ mgbanwe.
Uru: Nguzogide dị mma megide nchara hydrogen, yana nchọpụta ntụpọ ultrasonic 100% nke welds na-eme ka nchekwa akụrụngwa dị.
Ọgbakọ ọkụ eletrik nuklia:
Ihe eji eme ihe: Ngwa ngwa nke ihe nrụpụta ike nuklia na-eji efere ígwè SA302GrB nke nwere ọkpụrụkpụ nke 120mm. Site na nhazi na ọgwụgwọ okpomọkụ, a na-eme ka iguzogide radieshon dịkwuo mma site na 30%.
Uru: Ọdịnaya Molybdenum nke 0.45%-0.60% na-egbochi mmebi nke neutron radiation ma na-emezu ihe achọrọ na nkọwapụta ASME.
Ọdụ boiler nke ebe ọkụ eletrik:
Ihe eji eme ihe: Dọm boiler dị oke egwu na-eji efere ígwè SA302GrB, nke na-arụ ọrụ na 540℃ na 25 MPa, a na-agbatịkwa ndụ ọrụ ya ruo afọ 30.
Uru: Ike okpomọkụ dị elu nke obere oge ruru 690 MPa, nke dị mfe karịa ígwè carbon 15% ma belata oriri ike.
Ngalaba mmepụta ike mmiri:
Ihe eji eme ihe: Paịpụ mmiri dị elu nke ọdụ ike mmiri na-anabata efere ígwè SA302GrB ma gafere ule ike ọgwụgwụ 200,000 na gburugburu -20℃ ruo 50℃.
Uru: Ike mmetụta okpomọkụ dị ala (≥27 J na -20℃) na-emezu ihe achọrọ maka ihu igwe dị oke njọ nke mpaghara ugwu.
4. Nchekwa, nchekwa gburugburu ebe obibi na mkpa ụlọ ọrụ mmepụta ihe
Nchekwa:
Agafela ule mmetụta ASTM A20 (ike mmetụta V-notch ≥34 J na -20℃), na-eme ka ihe egwu nke mgbawa gbajiri agbaji dị ala erughị 0.1%.
Ike nke mpaghara ọkụ nke weld ahụ metụtara bụ ≤350 HV iji gbochie mgbawa nke hydrogen kpatara.
Nchedo gburugburu ebe obibi:
Ọdịnaya molybdenum nke 0.41%-0.64% na-ebelata ojiji nickel ma na-ebelata mwepụta ígwè dị arọ.
Ọ na-agbaso iwu EU RoHS ma machibido iji ihe ndị na-emerụ ahụ dịka lead na mercury.
Mkpa ụlọ ọrụ mmepụta ihe:
Ọ bụ 25% nke ahịa efere ígwè nke arịa nrụgide zuru ụwa ọnụ ma bụrụkwa ihe dị mkpa maka ebe a na-etinye ike nuklia na ngwa petrochemical.
Na-akwado ngwa okpomọkụ dị iche iche site na -20℃ ruo 450℃, ma na-eme ka arụmọrụ ọrụ akụrụngwa ka mma site na 15%-20% ma e jiri ya tụnyere ígwè carbon ọdịnala.
Mmechi
Efere ígwè SA302GrB aghọọla ihe dị mkpa maka akụrụngwa ụlọ ọrụ ọgbara ọhụrụ dị elu na nke nwere nrụgide dị elu n'ihi ike ya dị elu, iguzogide nchara na mfe ịgbado ọkụ. Nguzozi nchekwa ya, nchekwa gburugburu ebe obibi na ịdị ọnụ ala ya na-eme ka ọ ghara ịdị mkpa n'ọhịa ike nuklia, kemịkalụ petrochemicals, ike, wdg, ọ na-akwalite mmepe nke akụrụngwa ụlọ ọrụ mmepụta ihe gaa n'ụzọ dị irè na nke dị nchebe karị.
Oge ozi: Jun-04-2025