Puas yog ASTM A203 Qib D haum rau qhov kub thiab txias ib puag ncig?
ASTM A203 Qib D (3.5% npib tsib xee steel) feem ntau yog tsim los rau qis - qhov kub thiab txias kev pabcuam, muab kev pabcuam zoo heev ntawm qhov kub thiab txias mus rau -101℃(-150℃F). Nws tsis raug suav hais tias yog qhov kub-kub alloy hlau, vim nws lub zog thiab kev ruaj ntseg yog tsim rau kev siv cryogenic lossis nruab nrab-kub.
ASTM A203 Qib D yog ferritic npib tsib xee - alloy steel phaj siv rau hauv kev tsim cov hlab ntsha siab rau qis - kev pabcuam kub. Nrog 3.5% npib tsib xee ntxiv, nws tau tsim tshwj xeeb los daws cov teeb meem thermal ntawm cov txheej txheem hauv tub yees. Nws yog "tawv" hlau, txhais tau tias nws tuaj yeem nqus tau siab ntawm lub zog kinetic txawm tias khov, uas tiv thaiv cov kab nrib pleb los ntawm kev hloov mus rau kev puas tsuaj loj. Nws yog dav siv nyob rau hauv lub ntiaj teb no tshuaj thiab lub zog sectors rau txhua daim ntawv thov qhov twg qhov kev khiav hauj lwm kub poob ntawm -75℃F thiab -150℃F.
Cov yam ntxwv tseem ceeb
High Energy Absorption:Dhau qhov kev xav tau nruj ntawm Charpy, kom ntseeg tau tias cov khoom siv tuaj yeem tiv taus qhov kub siab ntawm qhov txias.
Stable Thermal Expansion:Nws cov yam ntxwv ntawm thermal expansion yog kwv yees, txo kev ntxhov siab ntawm junctions nrog rau lwm yam steel Cheebtsam.
Nto Zoo:Ua rau siab PVQ (Pressure Vessel Quality) cov qauv, ua kom muaj qhov tsis xws luag thiab laminations tsawg.
Tsawg Carbon sib npaug:Tsim los rau weldable nyob rau hauv tej yam kev mob, yog hais tias tsim nyog tsawg - cov txheej txheem hydrogen raug ua raws.
Reliable Yield Limit:Muab qhov tsawg kawg nkaus tawm los ntawm 37 ksi (255 MPa), ua kom cov qauv kev ruaj ntseg nyob rau hauv siab.
Qib Qib
ASTM:American Society for Testing and Materials.
A:Prefix rau Ferrous (hlau{0}}raws li) cov ntaub ntawv.
203:Tus txheej txheem rau Nickel Alloy Steel siab nkoj daim hlau.
Qib D:Lub zog tensile qis (65-85 ksi) nyob rau hauv 3.5% Nickel tsev neeg.
Kev sib piv (vs. ASTM A240 Hom 304 Stainless Hlau)
Chemical complexity:A203 Qib D yog ferritic nickel hlau (3.5% Nws); 304 yog austenitic stainless hlau (8% Ni + 18% Cr).
Tensile zog:Ob leeg muaj qhov zoo sib xws tensile yam tsawg kawg nkaus, tab sis Qib D yog ferritic thaum 304 yog austenitic.
Thermal Window:304 Stainless tsis muaj qhov hloov pauv kub thiab tuaj yeem txias dua, tab sis A203 Qib D yog tus nqi ntau dua - siv tau rau-150℃Fntau.
Weldability:304 yooj yim dua rau vuam yam tsis muaj preheat, tab sis A203 Qib D yog qhov zoo dua rau qhov hnyav - cov hlab ntsha uas thermal expansion txuam yog qhov tseem ceeb.
Daim Ntawv Thov Kev Sib Tham
Liquid Ethane Vaporizers:Thaum tshav kub kub exchangers uas regasify ethane rau siv nyob rau hauv yas manufacturing.
Txias-Service Manifolds:Hnyav- lub luag haujlwm piping headers rau kev faib roj hauv sub- huab cua arctic.
Tej CO2 Cia Tank:Loj - cov tso tsheb hlau luam loj siv nyob rau hauv cov chaw lag luam rau kev khaws cov kua carbon dioxide.
Cryogenic Expansion Bellows:Cov txheej txheem reinforcement rau piping uas undergoes loj heev thermal contraction.
Secondary Containment Plhaub:Sab nraud kev nyab xeeb plhaub rau cov kua tso tsheb hlau luam phom sij nyob rau hauv cov cheeb tsam uas muaj lub caij ntuj no qis heev.
ASTM A203 Qib D ua haujlwm li cas hauv qhov chaw corrosive?
ASTM A203 Qib D steel muaj qhov zoo corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv marine thiab offshore ib puag ncig, vim nws cov ntsiab lus siab nickel. Cov khoom siv tiv taus corrosion tshwm sim los ntawm kev raug dej ntsev, tshuaj lom neeg, thiab lwm yam hnyav, ua rau nws tsim nyog siv rau hauv kev lag luam xws li roj thiab roj, kev tsim kho marine, thiab petrochemical ua. Nws tiv thaiv kev ntxhov siab corrosion cracking kuj txhim kho nws cov kav ntev, ua kom ntev - lub sij hawm ua haujlwm nyob rau hauv ib puag ncig corrosive qhov twg lwm cov ntaub ntawv yuav degrade sai dua.
Dab tsi yog qhov cuam tshuam ntawm ASTM A203 Qib D steel?
ASTM A203 Qib D muaj kev cuam tshuam zoo heev, tshwj xeeb tshaj yog nyob rau hauv qis - qhov kub thiab txias. Nws cov ntsiab lus npib tsib xee siab pab cov khoom siv tswj nws cov tawv nqaij thiab ua rau cov pob txha tawg ntawm qhov txias heev. Qhov no yog ib qho tseem ceeb rau cov ntawv thov xws li cryogenic cia tso tsheb hlau luam, lub nkoj siab, thiab offshore platforms, uas cov ntaub ntawv raug rau qhov chaw txias heev. Cov hlau muaj peev xwm nqus tau lub zog tsis muaj kev tawg ua kom muaj kev nyab xeeb thiab kev ntseeg siab hauv cov xwm txheej hnyav no.
Dab tsi yog qhov zoo ntawm ASTM A203 Qib D?
Cov txiaj ntsig tseem ceeb ntawm ASTM A203 Qib D suav nrog nws lub zog siab, tshwj xeeb toughness ntawm qhov kub thiab txias, thiab zoo heev tiv thaiv corrosion thiab qaug zog. Cov hlau cov ntsiab lus siab nickel txhim kho nws qhov qis - qhov kub thiab txias, ua rau nws tsim nyog rau kev siv cryogenic thiab offshore. Nws kuj muaj qhov zoo weldability, kom ntseeg tau tias nws tuaj yeem tsim tau yooj yim rau hauv cov duab nyuaj rau cov txheej txheem tseem ceeb xws li cov hlab ntsha siab thiab cov tso tsheb hlau luam.
ASTM A203 Qib D Cov Khoom Siv Tshuaj thiab Cov Khoom Siv Hluav Taws Xob
|
Qib |
Chemical Composition (%) |
||||
|
C |
Mn Ntau dua lossis sib npaug |
Si |
P |
S |
|
|
A203 Qib D (A 203 TSI) |
0.17 |
0.7-0.8 |
0.13-0.45 |
0.035 |
0.035 |
|
Qib |
Mechanical Property |
|
|||
|
Tensile zog (MPa) |
Yield zog (MPa) |
% Elongation hauv 2 nti (50mm) min |
Impacting Test Temperature (degree) |
|
|
|
A203 Qib D (A 203 TSI) |
450 |
255 |
19 |
-20,40,-60 |
1. ASTM A203 Qib D steel yog dab tsi?
ASTM A203 Qib D yog siab -lub zog qis- hlau alloy uas muaj cov nyiaj npib tsib xee (3.50-5.00%) los txhim kho nws cov tawv tawv, lub zog, thiab tiv thaiv corrosion. Cov khoom siv no feem ntau yog siv rau hauv cov hlab ntsha siab, cov khoom siv hluav taws xob, thiab cov tso tsheb hlau luam cryogenic, vim nws ua tau zoo nyob rau hauv qhov chaw qis. Nws zoo heev weldability thiab lub zog ntawm ob qho tib si qis thiab siab kub ua rau nws zoo tagnrho rau kev siv tseem ceeb.
2. Lub zog tensile ntawm ASTM A203 Qib D yog dab tsi?
Lub zog tensile ntawm ASTM A203 Qib D steel yog li ntawm 485 txog 620 MPa (70 txog 90 ksi). Lub zog tensile siab no ua kom ntseeg tau tias cov khoom siv tuaj yeem tiv taus kev ntxhov siab yam tsis tau ua tsis tiav, txawm tias nyob rau hauv qhov xwm txheej hnyav. Ua ke nrog nws qhov zoo tshaj plaws qis- qhov kub thiab txias tsis kam, lub zog tensile no ua rau ASTM A203 Qib D zoo tagnrho rau kev siv hauv cov hlab ntsha siab, cov chaw sab nrauv, thiab lwm yam siab -siab, qis- qhov kub thiab txias.
3. Dab tsi yog cov qauv ntawm ASTM A203 Qib D steel?
ASTM A203 Qib D feem ntau muaj nyob rau hauv daim ntawv hlau, uas tuaj yeem ua tiav rau hauv cov khoom xws li cov hlab ntsha siab, tso tsheb hlau luam, thiab cov khoom siv hluav taws xob sib hloov. Cov khoom muaj nyob rau hauv ntau yam thicknesses nyob ntawm seb tus tsim yuav tsum tau ntawm daim ntawv thov. Nws tseem tuaj yeem dov lossis forged rau hauv cov duab kev cai siv rau hauv ntau cov qauv, muab ntau yam kev siv rau ntau yam kev lag luam.
4. Qhov siab tshaj plaws thickness ntawm ASTM A203 Qib D yog dab tsi?
Qhov siab tshaj plaws ntawm ASTM A203 Qib D steel daim hlau feem ntau yog mus txog 100 hli (4 ntiv tes), txawm hais tias cov ntu tuab tuaj yeem ua tau raws li cov kev xav tau tshwj xeeb. Lub thickness ntawm lub phaj yuav txawv nyob ntawm seb tus tsim yuav tsum tau ntawm lub siab hlab ntsha los yog cov qauv uas yog fabricated. Cov phaj tuab feem ntau yuav tsum tau muaj nyob rau hauv loj - daim ntawv thov xws li offshore rigs, tank cia, los yog siab - siab reactors, qhov ntau dua structural kev ncaj ncees yog qhov tseem ceeb los tiv thaiv cov kev xav tau ntawm ib puag ncig.
5. ASTM A203 Qib D ua li cas?
ASTM A203 Qib D yog tsim los ntawm kev tswj cov txheej txheem melting thiab refining, ua raws li kub dov rau daim hlau. Cov hlau yog tom qab cua sov- kho kom ua tiav qhov xav tau cov khoom siv kho tshuab, suav nrog lub zog thiab tawv. Kev kho cua sov feem ntau suav nrog kev sib xyaw ua ke ntawm annealing thiab tempering, ua raws li kev ua kom txias los txhim kho ductility thiab txo qis brittleness. Tom qab ua tiav, cov hlau raug kuaj xyuas kom ua raws li ASTM A203 specifications.
6. ASTM A203 Qib D puas tuaj yeem siv rau hauv cov ntawv thov sab nrauv?
Yog lawm, ASTM A203 Qib D yog dav siv nyob rau hauv offshore daim ntaub ntawv vim nws zoo heev toughness ntawm tsawg kub thiab siab tiv thaiv corrosion. Offshore platforms, drilling rigs, thiab pipelines feem ntau ntsib ib puag ncig hnyav, nrog rau raug dej ntsev thiab kub heev. ASTM A203 Qib D lub peev xwm los tiv thaiv cov xwm txheej no, nrog rau nws cov weldability zoo thiab lub zog siab, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim kho sab nrauv.
7. Cov khoom siv tshuaj lom neeg ntawm ASTM A203 Qib D yog dab tsi?
ASTM A203 Qib D steel muaj cov feem pua ntawm cov npib tsib xee (3.50-5.00%), uas txhim kho nws cov tawv thiab corrosion kuj. Lwm cov ntsiab lus alloying muaj xws li carbon, manganese, silicon, phosphorus, thiab sulfur. Qhov sib npaug ntawm cov ntsiab lus no muab ASTM A203 Qib D nws lub zog, ductility, thiab tsis kam rau cov pob txha tawg, tshwj xeeb tshaj yog hauv cov ntawv thov cryogenic. Cov ntsiab lus qis carbon zoo txhim kho weldability, thaum manganese pab nrog hardness thiab lub zog.
Yog xav paub ntxiv txog GNEE cov khoom steel, tiv tauj peb ntawm info@gneesteels.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
