SA612M steel phajyog C-Mn-Si carbon steel phaj tsim los rau welded siab hlab ua haujlwm nyob rau hauv nruab nrab mus rau qis- qhov kub thiab txias.
Nws yog tsim tshwj xeeb rau cov hlab ntsha siab thiab cov khoom siv tseem ceeb hauv kev lag luam xws li roj av, petrochemicals, tsim hluav taws xob, thiab kev tsim boiler.
Nws qhov chaw tseem ceeb yog nyob rau hauv kev ua tiav qhov sib npaug ntawm lub zog siab, zoo heev toughness, thiab superior weldability los ntawm optimized tshuaj muaj pes tsawg leeg thiab nruj txheej txheem tswj, ua tau raws li qhov yuav tsum tau ntawm manufacturing siab - siab hlab ntsha nyob rau hauv nruab nrab mus rau qis - kub.
Cov Qauv Ua Haujlwm
Cov Qauv Tseem Ceeb:
ASTM A612 / A612M - Txuj kev qhia tshwj xeeb rau cov phaj siab siab, Carbon Steel, Manganese-Silicon, Siab zog, rau kev pabcuam nruab nrab thiab qis
ASME SA612 / SA612M - Muaj ntawv pov thawj rau kev siv lub nkoj siab
Supplementary Standards:
Kev Ntsuas Ultrasonic: ASTM A578 (Nqaj-Beam Ultrasonic Examination ntawm Steel Phaj)
Kev kho qhov tsis xws ntawm qhov chaw: ASME SA-20M (Cov Lus Qhia dav dav rau cov phaj hlau rau lub nkoj siab)
Tshuaj muaj pes tsawg leeg
| Element | Cov ntsiab lus (%) | Muaj nuj nqi |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.25 | Ua kom lub hauv paus muaj zog; qis- carbon tsim txhim kho toughness |
| Manganese (Mn) | 1.00–1.50 | Txhim kho matrix thiab txhim kho hardenability |
| Silicon (Si) | 0.15–0.50 | Txhim kho corrosion kuj thiab deoxidation |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.03 | Txo brittleness |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.02 | Txhim kho machinability thiab weldability |
| Chromium (Cr) | Tsawg dua lossis sib npaug li 0.25 | Txhim kho oxidation tsis kam |
| Nickel (Ni) | Tsawg dua lossis sib npaug li 0.25 | Txhim kho qis-kub toughness |
| Molybdenum (hli) | Tsawg dua lossis sib npaug li 0.08 | Txhim kho siab -kub muaj zog |
| Niobium (Nb) | Tsawg dua los yog sib npaug li 0.05 | Refines grain qauv thiab ua kom muaj zog |
Alloy Nta: Microalloying nrog niobium (Nb) ua tiav cov khoom ua kom zoo, thaum ultra-tsawg phosphorus thiab sulfur ua kom cov khoom zoo purity, tsim lub hauv paus rau cov khoom zoo heev thiab weldability.
Mechanical Properties
| Khoom | Tus nqi ntau |
|---|---|
| Yield zog (ReH) | Ntau dua lossis sib npaug li 345 MPa |
| Tensile zog (Rm) | 570-725 MPa (tsawg dua lossis sib npaug ntawm 12.5mm) / 560-695 MPa (12.5-25mm) |
| Elongation Tom qab Fracture (A) | Ntau dua lossis sib npaug li 16% (200mm ntsuas qhov ntev) |
| Impact Zog (-40℃V-notch) | Ntau dua lossis sib npaug rau 27 J (nruab nrab) |
SA612M steel phaj muaj qhov sib npaug ntawm lub zog siab thiab tawv, zoo tagnrho rau nruab nrab - qhov kub thiab txias - qhov chaw siab.
Core Zoo
Lub zog sib npaug thiab Toughness: Lub zog tensile siab, lub zog tawm los Ntau dua lossis sib npaug ntawm 345 MPa, elongation Ntau dua lossis sib npaug li 16%, thiab cuam tshuam lub zog Ntau dua lossis sib npaug ntawm 27 J ntawm -40 degree.
Exceptional Weldability: Carbon sib npaug (Ceq) Tsawg dua lossis sib npaug li 0.48%, tso cai rau preheat- vuam dawb rau cov phaj Tsawg dua lossis sib npaug li 150mm. Weld lub zog phim lub hauv paus hlau.
Superior Internal Quality: Ultrasonic kuaj xyuas kom ntom ntom, cov qauv sab hauv, tsis muaj teeb meem tsis xws luag.
Corrosion Resistance: Alloying cov ntsiab lus zoo li Si, Cr, Ni txhim khu kev ruaj khov hauv cov xov xwm hnyav.
Ua Flexibility: Txhawb kev txiav, khoov, stamping, thiab sib sau rau cov khoom nyuaj.
Txoj kev txiav rau SA612M
| Txoj kev | Kev piav qhia | Daim Ntawv Thov / Qhov Zoo |
|---|---|---|
| Nplaim Txiav | Siv oxy- nplaim taws thiab siab - oxygen | Suitable for thick plates (>10mm); ceev, tsis tshua muaj khoom poob |
| Plasma Txiav | Siab -plasma arc melts hlau | High precision, complex geometries, siab - melting - cov ntaub ntawv taw tes |
| Laser Txiav | High-precision txiav rau nyias daim hlau (<20mm) | Cov npoo du, me me cua sov- cuam tshuam cheeb tsam, automated ntau lawm |
| CNC txiav | Program- tswj txoj kev txiav | Integrate nplaim taws, ntshav, lossis laser; high efficiency thiab precision |
Tej kev siv
SA612M steel phaj yog dav siv hauv cov cuab yeej tseem ceeb thoob plaws ntau qhov kev lag luam, tshwj xeeb tshaj yog nyob rau hauv nruab nrab - qhov kub thiab txias - siab.
Tsawg-Tsuas Kub Siab Nkoj
LPG cia tso tsheb hlau luam, cov khoom siv kua ammonia, cov hlab ntsha cryogenic
Cryogenic separators, condensers, thiab qis - kub exchangers
Kev lag luam Petrochemical
Tsawg-kub reactors, chemical processing nkoj
Cov khoom siv roj thiab roj hauv ntug dej hiav txwv: cov kav dej hauv qab hiav txwv, qis- kub manifolds
Acid/base storage tanks thiab chemical reactors
Kev lag luam tsim hluav taws xob
Lub chaw nres tsheb fais fab boilers: qis- cov khoom kub, cov khoom siv hluav taws xob hloov pauv kub
Nuclear cog auxiliary khoom: cryogenic cia systems, siab hlab ntsha
General Engineering & Kev Tsim Kho
Siab - lub tank siab siab (txog 21MPa)
Spherical tanks rau industrial gas cia
Cov khoom sib xyaw ua ke rau qis -kub muaj cov nroj tsuag
Cov teb tshwj xeeb
Cryogenic engineering: LNG thauj nkoj, cryogenic cia tso tsheb hlau luam
Kev ua tshuaj thiab zaub mov: qis- cov khoom siv kom tsis muaj menyuam
Marine engineering: shipboard siab nkoj, offshore platform Cheebtsam
SA612M steel phaj yog siab -lub zog, welded carbon steel phaj tsim rau nruab nrab- rau qis-kub siab cov hlab ntsha. Nws cov tshuaj muaj txiaj ntsig zoo tshaj plaws, nplua -grain microstructure, thiab kev tswj cov txheej txheem nruj ua rau nws zoo tagnrho rau siab - siab, kev siv tseem ceeb hauv cov roj av, petrochemical, lub zog, boiler, cryogenic, thiab marine industries.
Nrog tshwj xeeb weldability, toughness, corrosion kuj, thiab fabrication yooj, SA612M ua kom ntseeg tau thiab muaj kev nyab xeeb kev ua tau zoo raws li cov kev pabcuam nyuaj.
Q1: Hom hlau twg yog SA612?
SA612 yog cov pa roj carbon-manganese siab lub nkoj steel phaj teev nyob rau hauv ASME SA612 / ASTM A612. Nws yog tsim los rau welded siab hlab ntsha ua hauj lwm nyob rau hauv nruab nrab kub thiab siab. Piv nrog rau cov pa roj carbon steels, SA612 muab lub zog ntau dua thiab kev ua haujlwm zoo dua qub thaum tuav cov weldability zoo.
Q2: Qhov ntsuas kub npaum li cas rau SA612 daim ntawv thov?
SA612 feem ntau yog npaj rau nruab nrab- qhov kub thiab txias, feem ntau haum rau kev khiav hauj lwm kub ntawm ambient mus txog ib ncig ntawm 350℃. Nws tsis pom zoo rau qis- qhov kub thiab txias cuam tshuam- cov ntawv thov tseem ceeb lossis siab - qhov kev pab cuam hydrogen tshwj tsis yog muaj kev sim ntxiv thiab kev ntsuam xyuas engineering.
Q3: SA612 txawv ntawm SA516 Qib 70 li cas?
Thaum ob qho tib si SA612 thiab SA516 Gr.70 yog cov hlab ntsha siab, SA612 muaj cov txiaj ntsig qis dua thiab lub zog tensile, tso cai rau cov neeg tsim qauv siv cov phaj nyias nyias nyob rau hauv tib lub siab tsim. SA516 Gr.70 yog siv dav dua rau cov hlab ntsha dav dav, qhov SA612 nyiam dua thaum muaj zog dua thiab txo qhov hnyav.
Q4: Puas yog SA612 haum rau welded siab hlab ntsha?
Yog lawm. SA612 tshwj xeeb yog tsim rau welded siab hlab ntsha kev tsim kho. Nws nthuav tawm kev ua haujlwm ruaj khov siv cov txheej txheem vuam xws li SAW, FCAW, thiab SMAW. Preheating thiab post-weld heat treatment feem ntau tsis tas yuav tsum tau ua rau cov tuab tuab, tab sis tuaj yeem siv nyob ntawm cov phaj tuab thiab cov qauv tsim qauv.
Q5: Puas yog SA612 xav tau kev sim cuam tshuam?
Kev ntsuam xyuas cuam tshuam rau SA612 tsis tas yuav tsum tau ua raws li tus qauv. Txawm li cas los xij, Charpy V- qhov ntsuas qhov cuam tshuam tuaj yeem teev nyob rau hauv daim ntawv xaj yog tias lub nkoj siab yuav ua haujlwm hauv qis dua - kub lossis cyclic- chaw thau khoom, lossis yog tias xav tau los ntawm qhov project specifications.
Q6: Dab tsi yog daim ntawv thov ntawm SA612 steel phaj?
SA612 steel daim hlau yog dav siv nyob rau hauv nruab nrab - siab welded hlab ntsha, nrog rau cov kav hlau txais xov, LPG cia tso tsheb hlau luam, reactors, separators, petrochemical khoom, thiab fais fab nroj tsuag siab systems. Nws lub zog siab dua ua rau nws tshwj xeeb tshaj yog haum rau cov hlab ntsha loj - txoj kab uas hla uas txo qhov hnyav tau zoo.
Q7: Yuav ua li cas SA612 piv nrog alloy siab hlab ntsha hlau xws li SA387?
SA612 yog ib qho uas tsis yog- alloy carbon-manganese hlau, thaum SA387 yog chromium-molybdenum alloy hlau tsim los rau siab - kub thiab kev pabcuam hydrogen. SA612 yog tus nqi ntau dua - siv tau thiab yooj yim dua rau kev tsim tawm thaum siab - qhov kub thiab txias tsis kam lossis hydrogen tsis kam. Rau siab - kub lossis kev pabcuam hnyav, SA387 feem ntau nyiam.
