ASTM A179 seamless steel raj, raws li cov yeeb nkab tshwj xeeb siv dav rau cov khoom siv hluav taws xob sib txawv, cov condensers, thiab lwm yam khoom siv siab - siab, yog cov khoom siv tseem ceeb hauv kev lag luam xws li petrochemicals, lub zog tsim hluav taws xob, thiab kev tsim boiler vim lawv cov thermal conductivity zoo, corrosion kuj, thiab ruaj khov nyob rau hauv siab - kub thiab siab - siab.
Kev ua tiav ntawm ASTM A179 tus qauv xav tau:
Cov ntsiab lus carbon (C) Tsawg dua lossis sib npaug li 0.06%
Manganese (Mn) cov ntsiab lus 0.27-0.63%
Silicon (Si) cov ntsiab lus Ntau dua lossis sib npaug rau 0.10%
Phosphorus (P) cov ntsiab lus Tsawg dua lossis sib npaug rau 0.025%
Sulfur (S) cov ntsiab lus Tsawg dua los yog sib npaug rau 0.025%
Kev muab cov raj txias - kos seamless rajnrog sab nraud diameters Φ12.7-50.8mm thiab phab ntsa thicknesses 0.89-3.66mm.
Rau Φ19mm raj: sab nraud txoj kab uas hla ± 0.10mm, phab ntsa thickness sib txawv ± 10%
Mechanical zog:
Tensile zog Ntau dua los yog sib npaug rau 325MPa
Yield zog Ntau dua los yog sib npaug rau 180MPa
Hardness Tsawg dua los yog sib npaug rau 72HRB
Expansion rate Ntau dua lossis sib npaug li 15% (30℃cone expansion test)
Thermal khoom:
Thermal conductivity Ntau dua los yog sib npaug rau 52W / (m·K) (ntawm 100 degree)
Tshwj xeeb kub muaj peev xwm 0.46kJ / (kg·K)
Thaum tshav kub kub hloov coefficient 40% siab dua 304 stainless hlau
Geometric kam rau ua:
Kev Ncaj Ncees Tsawg dua lossis sib npaug li 1.5mm / m
Ellipticity Tsawg dua lossis sib npaug li 0.5% OD
Txiav perpendicularity sib txawv Tsawg dua los yog sib npaug rau 0.15mm
Tsis yog -kev kuaj kev puas tsuaj:
Eddy kev xeem tam sim no rau ASME SE-209 Class A
Ultrasonic kuaj rau ASME SA-450
Nto tiav:
Sab hauv / sab nrauv roughness Ra Tsawg dua los yog sib npaug rau 1.6μm
Tso cai me me khawb tsawg dua lossis sib npaug ntawm 0.05mm tob
Khoov kev ua tau zoo:
Yam tsawg kawg yog dabtsi yog khoov vojvoog 2D (D=kab sab nraud)
Phab ntsa thickness txo qis dua los yog sib npaug li 15% tom qab khoov
Vuam cov lus pom zoo:
GTAW welding pom zoo
Cov roj tiv thaiv Ar+2%O₂
Thaum tshav kub kub input Tsawg dua los yog sib npaug rau 15kJ / cm
Weld factor Ntau dua lossis sib npaug rau 0.85
Expansion kev ua tau zoo:
Tso cai nthuav dav tsawg dua lossis sib npaug li 5%
Cov dej xau siab Ntau dua lossis sib npaug li 1.5 npaug ntawm kev tsim siab tom qab nthuav dav
Cov khoom thiab customization:
Feem ntau cov khoom loj: Φ19.05, Φ25.4, thiab lwm yam.
Inventory >50,000 meters
Kev cai ntev precision ± 2mm
Ntim thiab kev tiv thaiv:
Cov roj tiv thaiv xeb + lub kaus mom kawg
Txhua pob khoom nruab nrog ASME BPE-cov ntaub ntawv siv tau
ASTM A106 seamless steel yeeb nkab yog cov pa roj carbon steel seamless yeeb nkab tsim los rau siab - kub thiab siab - cov ntawv thov siab, ua raws li ASTM A106 / A106M tus qauv tsim los ntawm American Society for Testing and Materials (ASTM).
1. Chemical Composition thiab Mechanical Properties
Tshuaj muaj pes tsawg leeg:
Cov tshuaj muaj pes tsawg leeg ntawm ASTM A106 seamless steel kav yog tswj nruj me ntsis, nrog rau cov ntsiab lus tseem ceeb hauv qab no:
Carbon (C): Tsawg dua lossis sib npaug rau 0.30%
Manganese (Mn): 0.29% ~ 1.06%.
Phosphorus (P): Tsawg dua lossis sib npaug rau 0.035%
Sulfur (S): Tsawg dua lossis sib npaug rau 0.035%
Silicon (Si): Tsawg dua lossis sib npaug li 0.10% (cov ntsiab lus tsawg kawg tsis tau qhia meej meej, tab sis feem ntau tswj tau nyob rau hauv qee qhov ntau)
Chromium (Cr), Nickel (Ni), tooj liab (Cu), Molybdenum (Mo), Vanadium (V): Cov ntsiab lus muaj cov ntsiab lus qis (piv txwv li, Cr Tsawg dua lossis sib npaug li 0.40%, Ni Tsawg dua lossis sib npaug li 0.40%, thiab lwm yam).
Cov tshuaj tiv thaiv kab mob no ua kom muaj kev ruaj ntseg thiab kev tiv thaiv corrosion ntawm cov kav dej nyob rau hauv siab - kub thiab siab - siab.
Mechanical Properties:
Tensile zog: Ntau dua los yog sib npaug rau 415 MPa
Yield zog: Ntau dua los yog sib npaug rau 240 MPa
Elongation: Ntau dua lossis sib npaug li 22% (thaum ntsuas qhov ntev yog 50mm)
Cov cuab yeej cuab yeej ntsuas no tau lees paub tias cov kav dej yuav tsis yooj yim deform lossis rupture nyob rau hauv siab thiab kub.
2. Specifications thiab Dimensions
ASTM A106 seamless steel kav los ntawm ntau yam kev qhia tshwj xeeb thiab tuaj yeem kho raws li cov neeg siv khoom xav tau rau cov kab sib txawv, phab ntsa thicknesses, thiab ntev. Cov kab dav dav dav dav li ntawm NPS 1/8 (DN6) txog NPS 48 (DN1200), nrog phab ntsa tuab txiav txim siab los ntawm kev siv tshwj xeeb.
3. Cov Qauv Zoo thiab Kev Ntsuam Xyuas
ASTM A106 seamless steel kav yuav tsum ua raws li cov cai ntawm ASTM A106 / A106M tus qauv thiab raug soj ntsuam nruj:
Tshuaj ntsuam xyuas muaj pes tsawg leeg: Xyuas kom cov tshuaj muaj pes tsawg leeg ntawm cov kav dej ua tau raws li tus qauv yuav tsum tau ua.
Kev ntsuam xyuas cov cuab yeej cuab tam: Nrog rau kev ntsuam xyuas lub zog tensile, lub zog tawm los, elongation, thiab lwm yam ntsuas.
Tsis yog -kev kuaj kev puas tsuaj: Xws li kev kuaj ultrasonic thiab kuaj hluav taws xob kom ntseeg tau tias tsis muaj qhov tsis xws luag hauv cov kav dej.
Kev tshuaj xyuas qhov muag: Txheeb xyuas qhov zoo ntawm qhov chaw, qhov tseeb qhov tseeb, thiab lwm yam ntawm cov kav dej.
ASTM A106 Gr.B vs. ASTM A179 Qhov Tseem Ceeb Kev Ua Haujlwm Sib Piv
| Sib piv Dimension | ASTM A106 Gr.B | ASTM A179 Cov khoom lag luam |
|---|---|---|
| Txheem Scope | Seamless carbon steel kav rau siab - qhov kub thiab txias kev pab cuam, haum rau chav kav dej, boilers, petrochemical refining, thiab lwm yam siab - siab / siab- kub ib puag ncig. | Txias-tso qis- cov pa roj carbon seamless raj rau cov khoom siv hluav taws xob sib txuas, cov khoom siv hluav taws xob, thiab lwm yam khoom siv hluav taws xob hloov hluav taws xob, ua haujlwm kub tsawg dua lossis sib npaug li 450℃. |
| Chemical Composition (%) | ||
| - Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.30% | Tsawg dua lossis sib npaug li 0.06% |
| - Manganese (Mn) | 0.29%–1.06% | 0.27%–0.63% |
| - Silicon (Si) | Tsawg dua lossis sib npaug rau 0.10% (cov ntsiab lus tsawg kawg tsis tau teev tseg, feem ntau Ntau dua lossis sib npaug rau 0.10%) | Ntau dua lossis sib npaug li 0.10% |
| - Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035% | Tsawg dua lossis sib npaug li 0.025% |
| - Sulfur (S) | Tsawg dua lossis sib npaug li 0.035% | Tsawg dua lossis sib npaug li 0.025% |
| - Cov ntsiab lus (Cr/Ni, thiab lwm yam) | Tsawg dua lossis sib npaug li 0.40% (txhua lub ntsiab lus) | Tsis tas yuav tsum tau, feem ntau taug qab tus nqi. |
| Mechanical Properties | ||
| - Lub zog tensile | Ntau dua lossis sib npaug li 415 MPa | Ntau dua lossis sib npaug li 325 MPa |
| - Yield zog | Ntau dua lossis sib npaug li 240 MPa | Ntau dua lossis sib npaug li 180 MPa |
| - Elongation (gauge ntev 50mm) | Ntau dua lossis sib npaug li 22% | Ntau dua lossis sib npaug li 35% (kuaj ib ASTM E8, raws li A106 xeem txoj kev) |
| - Hardness | Tsis tau teev tseg | Tsawg dua lossis sib npaug rau 72 HRB |
| Txheej Txheem Kev Ua Haujlwm | ||
| - Kev sim ua kom nrawm | Yuav tsum tau: Sample flattened kom txog thaum lub raj phab ntsa sib cuag, tsis muaj kab nrib pleb. | Tsis xav tau. |
| - Expansion test | Tsis xav tau. | Yuav tsum tau: 30℃cone, expansion rate Ntau tshaj los yog sib npaug rau 15%. |
| Dimensions thiab Tolerances | Sab nraud txoj kab uas hla: NPS 1/8 txog NPS 48 (DN6–DN1200); phab ntsa thickness ib Sch series (xws li Sch40, Sch80). | Sab nraud txoj kab uas hla: Φ12.7-50.8mm; phab ntsa thickness: 0.89-3.66mm; Φ19mm raj sab nraud txoj kab uas hla ± 0.10mm, phab ntsa thickness sib txawv ± 10%. |
| Nto Zoo | Tsis meej Ra tus nqi yuav tsum tau; tsis muaj kab nrib pleb, folds, los yog scale defects. | Sab hauv / sab nrauv roughness Ra Tsawg dua lossis sib npaug li 1.6μm; tso cai tsawg dua los yog sib npaug rau 0.05mm sib sib zog nqus me khawb. |
| Tsis yog -Kev kuaj kev puas tsuaj | Ultrasonic kuaj (UT), eddy tam sim no kuaj (ET), hydrostatic test. | Kev ntsuas tam sim no (ASME SE-209 Class A), kuaj ultrasonic (ASME SA-450). |
| Kev kho cua sov yuav tsum tau | Txias- cov raj kos yuav tsum tau kho cua sov ntau dua lossis sib npaug li 650℃txhawm rau txo kev ntxhov siab. | Txias- cov raj kos yuav tsum muaj qhov ci ntsa iab (780℃× 3h) txhawm rau tshem tawm kev ua haujlwm nyuaj. |
| Tej kev siv | Fais fab nroj tsuag boiler superheaters, steam main pipelines, petroleum cracking units, high -high fluid transport. | Plhaub-thiab-tube heat exchangers, condensers, low-pressure boiler heating surfaces, chemical reactor heat exchange tubes. |
| Vuam Cov Lus Qhia | GTAW / GMAW, preheat Tsawg dua lossis sib npaug li 100 degree, tsis tas yuav tsum muaj cua sov nkag. | GTAW, tiv thaiv roj Ar+2%O₂, tshav kub input Tsawg dua los yog sib npaug rau 15kJ/cm, weld factor Ntau dua los yog sib npaug rau 0.85. |
| Expansion Performance | Tsis tau teev tseg. | Kev tso cai nthuav dav tsawg dua lossis sib npaug li 5%, qhov dej xau siab Ntau dua lossis sib npaug rau 1.5 npaug ntawm kev tsim siab tom qab nthuav dav. |
| Yam tsawg kawg Bending Radius | Tsis tau teev tseg. | 2D (D= sab nraud), phab ntsa thickness txo qis dua los yog sib npaug li 15% tom qab khoov. |