Yuav ua li cas cov ATTM A516 GR.55 hlau daim hlau ua ke tua boiler kev lag luam qauv

Hauv cov boiler thiab siab lub siab kev lag luam, cov khoom xaiv ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab kev ntseeg tau. Ntawm cov ntaub ntawv ntau yam siv,ASTM A516 Gr.55 Hlau Daim Hlautau tawm los ua qhov kev xaiv zoo tshaj plaws rau cov tuam ntxhab thoob ntiaj teb. Cov pa roj carbon steel specification, tsim tshwj xeeb rau cov khoom siv nias, muaj kev sib xyaw ua ke zoo, thiab weldability uas ua rau nws haum rau cov khoom siv boiler.

Raws li cov boilers ua haujlwm nyob rau hauv high lectures thiab kub, cov ntaub ntawv siv yuav tsum with cd rau cov xwm txheej thaum khaws cov qauv kev ntseeg. Cov thoob plaws kev saws me nyuam ntawm ASTM A516 Gr.55 thoob plaws lub zog, thiab tshuaj lom neeg underscores thiab ua raws li cov qauv kev lag luam nruj. Cov ntawv no tshawb nrhiav seb cov khoom siv no ua tau raws li cov kev xav tau ntawm lub boiler kev lag luam los ntawm nws cov khoom, cov khoom siv mechanies, thiab cov txheej txheem tsim khoom.

Cov Txheej Txheem Txheej Txheem thiab Cov Lus Qhia Tshwj Xeeb

ASTM A516 Gr.55 yog cov pa roj carbon hlau tshwj xeeb tsim rau cov ntawv thov cov nkoj siab, tshwj xeeb hauv boiler tsim. Qhov "Gr.55" yog hais txog nws 55 KSI tsawg kawg yog lub zog (kwv yees li 205 mpa} phaus ib saws (KSI) ntaus nqi. Qhov kev qhia tshwj xeeb no yog ib feem ntawm cov dav dav ASTM A516 tus qauv, uas yog SARUMs Phaw and sa516 Gr.380 hais txog tib cov ntaub ntawv ntsuas ntsuas tau.

Cov kev qhia tshwj xeeb ntawm no statification poob nyob rau hauv cov cheeb tsam ntawm ob qho tib si kom ntxaws hauv ASME ENTORS), nrog cov txuj ci kev xeem), nrog rau cov kev ntsuas kho neeg), uas zoo tib yam rau AQUE 516 / A516M-06. Cov khoom tau raug cais raws li cov khoom nplua-grain, txhais tau tias nws tau deoxidized los tiv thaiv roj evolition thiab ua rau muaj kev sib xyaw ua ke ntau dua thiab txhim kho cov khoom siv tshuab.

Cov yam ntxwv tseem ceeb rau Boiler Daim Ntawv Thov

ASTM A516 Gr.55 Muaj ntau tus yam ntxwv tseem ceeb uas ua rau nws haum rau cov ntawv thov Boiler:

Txhim kho cov ntsiab lus tsis zoo: Cov hlau no tshwj xeeb tau tsim rau cov ntawv thov cuam tshuam rau kev txhim kho kev ua haujlwm ntawm qis kom kub.

Zoo heev weldability: ua tib zoo ntaus tshuaj lom neeg ua haujlwm rau qhov ua ntej ua ntej {{1} - Kev kho cua sov hauv ntau qhov xwm txheej.

Lub zog zoo - ductancation tshuav li cas: nrog lub tensile lub zog ntawm 380-515 MPA tsawg kawg nkaus ntawm 23% tshaj 200 hli

Cov khoom siv cov tuab tshaj plaws feem ntau yog txwv rau 305mm, tab sis niaj hnub tsim hluav taws xob thaum tswj cov kev tswj hwm thoob plaws tus ntoo khaublig {1}- seem.

Kev tsim nyog muaj pes tsawg leeg

Cov tshuaj lom neeg cov tshuaj lom neeg ntawm ASTM A516 Gr.55 yog ua tib zoo ua kom tiav kom ua tiav cov khoom siv yam xav tau thaum tswj cov txheej txheem zoo. Qhov tseeb muaj pes tsawg leeg sib txawv me ntsis nyob ntawm cov phaj tuab, xav txog cov nqi txias txias tau ntsib thaum lub sijhawm tsim khoom. Cov lus hauv qab no piav qhia cov kev cai uas raug rau ntau cov tuab tuab:

Cov lus: Tshuaj lom neeg muaj pes tsawg leeg ntawm Astm A516 Gr.55 (tus nqi siab tshaj plaws tshwj tsis yog muaj ntau yam qhia)

Nco tseg: Rau cov tuab dua lossis sib npaug rau 12.5mm, Manganese cov ntsiab lus tuaj yeem yog 0.55-0.98% (kev txheeb xyuas khoom) lossis 0.60-0.90% (melting tsom xam).

Nws tsim nyog sau cia tias tus qauv tso cai rau kev hloov kho cov ntsiab lus ntawm 0.01%, nce mus txog qhov siab tshaj plaws Qhov kev hloov kho no ua kom tsim nyog muab cov muaj pes tsawg leeg rau cov kev xav tau ntawm cov ntaub ntawv thov kom muaj cov khoom siv tseem ceeb.

Qhov cuam tshuam ntawm cov ntsiab ntawm cov khoom siv

Txhua qhov kev nyob rau hauv cov ntawv cog lus ua lub hom phiaj tshwj xeeb hauv kev ua tiav cov yam ntxwv xav tau cov yam ntxwv:

• Cov pa roj carbon (c): muab lub zog tseem ceeb los ntawm kev tsim tsim micretability thiab tiv thaiv brittleness. Cov pa roj carbon cov ntsiab lus nce mentsis nrog tuab kom them nyiaj rau cov qis dua hauv ntu tuab.
• Manganese (MN): txhim kho lub zog thiab kev ua haujlwm tsis muaj zog thaum ua rau tus nplua - nplej microstructed microstructure. Nws kuj tseem yuav pab tswj cov sulfide suav, txhim kho cov kev ua haujlwm kub ua haujlwm thiab cov khoom lag luam nto.
• Silicon (Si): Ua haujlwm ua deoxidizer thaum lub sijhawm ua lag luam hlau (tua cov hlau), txhim kho lub suab thiab kev sib dhos. Nws tseem ua rau muaj kev daws teeb meem zog.
• Phosphorus thiab Sulphur (P & S): Cov xeeb ntxwv no raug tswj nruj me ntsis raws li lawv tuaj yeem cuam tshuam kev cuam tshuam rau lawv thiab weldability. Cov ntsiab lus ntawm cov Sulfur tsawg Minimizes txoj kev pheej hmoo ntawm qhov kev pheej hmoo ntawm kub tawg thaum vuam.

Tus qauv tshuaj ntsuab zoo ntawm AUSTENENITIC GRESSE yuav tsum tau los ntawm A20 / A20m qauv ua kom muaj zog sib xws thoob plaws ntawm phaj thiab txhim kho kev cai rau tsawg- kev siv ntsuas kub.

Lub zog thiab cov kev xav tau durability

Cov cuab yeej ua haujlwm ntawm Astm A516 Gr.55 ua rau nws tsim nyog rau boiler siab cov hlab ntsha uas yuav tsum muaj cov tshuab ntsuas kev nyab xeeb. Cov khoom tshwj xeeb cov khoom siv raws li cov qauv muaj xws li:

Cov Lus Qhia: Cov Khoom Siv Neeg Kho Tshuab ntawm ASTM A516 Gr.55

Cov khoom siv no ua kom cov khoom siv tuaj yeem tiv thaiv cov hoop hais txog kev ua haujlwm hauv cov ntawv thov boiler thaum muab cov npoo kev nyab xeeb txaus rau kev ua tiav. Lub zog sib npaug thiab kev sib luag yog tshwj xeeb yog qhov tshwj xeeb rau kev ua kom haum, thermal cycling, thiab lwm yam hloov pauv.

Tougness thiab kev cuam tshuam tsis kam

Rau cov ntawv thov boiler, tshwj xeeb yog cov kev ua haujlwm ntawm qis dua kub, pob txha pob tawg yog qhov kev txiav txim siab tseem ceeb. ASTM A516 Gr.55 yog tshwj xeeb tsim rau cov ntawv thov uas ua kom tiav cov ntsiab lus yuam kev nruj yuav tsum tau ua. Thaum tus qauv kev qhia tshwj xeeb tsis tau yuam kev tshwj xeeb cov kev cuam tshuam, cov kev yuav tsum tau qhia cov charpy v {} Cov kev cuam tshuam ntawm cov neeg tsim qauv.

Cov khoom siv cov qauv nplej zoo, ua tiav los ntawm kev tswj hwm thiab ib txwm ua thaum xav tau, ua rau nws cov khoom muaj zog zoo heev. Qhov no yog qhov tshwj xeeb tshaj yog rau kev tiv thaiv brittle fracture thiab hais tawm, uas tuaj yeem muaj kev puas tsuaj loj hauv cov ntawv thov boiler.

Kev Kho Mob Cua Sov Cua Sov

Cua sov kho cua sov ua lub luag haujlwm tseem ceeb hauv kev txhim kho microstructure microstries thiab cov khoom siv mechanies hauv Astm A516 Gr.55 Hlau daim hlau. Tus qauv qhia meej meej kev kho cua sov yuav tsum tau raws ntawm phaj tuab thiab cov neeg siv khoom:

Rau thickness tsawg dua los yog sib npaug rau 40mm: daim hlau feem ntau muab tau rau hauv qhov qub, ntxhov siab}} Relier {}} releved tej yam mob.

For thickness >40 hli: Daim hlau yuav tsum yog ua kom ua kom ntseeg tau tias microstructure micrerture thiab cov khoom los ntawm tag nrho cov tuab.

Thaum kuaj cov ntsiab lus nyuaj yog qhov yuav tsum tau: Rau cov phiaj tsawg dua los yog sib npaug ntawm 40 hli thickness uas yuav tsum tau ntsuas kev sim tshwj tsis yog muaj kev pom zoo tshwj tsis yog muaj kev pom zoo tshwj tsis yog tus neeg yuav khoom.

Cov txheej txheem dab tsi cuam tshuam nrog cua sov cov hlau mus kwv yees li 900 degree, tom qab los ntawm cua txias. Qhov kev kho no tau kho cov qauv grain, txhim kho kev nruj me me, thiab ua kom cov khoom siv sib txawv ntawm cov phaj tuab.

Kev Kho Mob Cua Sov Tshwj Xeeb

Ntxiv rau cov qauv tsim kho, cov kev cai tshwj xeeb tso cai rau kev hloov kho tshav kub hloov kom ua tiav cov khoom sib txuas ua ke:

Ntxhov cua txias: nrog cov kev pom zoo rau cov neeg siv khoom siab dua li cov phiaj huab cua tau ua haujlwm los txhim kho kom yooj yim rau hauv thaj tsam 595-705℃(1100-1300 Degree F).

Kev ntxhov siab Kev ntxhov siab: Tus txheej txheem no cuam tshuam rau qhov kub hauv qab no qis dua qhov tseem ceeb kub (feem ntau 595 kawm tiav) ua raws li kev txias txias. Nws pab txo qis cov kev ntxhov siab ntawm kev sib sau lossis kev ua haujlwm tsis muaj kev hloov kho microstructure.

Cov kev kho mob tshav kub yog qhov tseem ceeb rau kev ua kom muaj kev sib koom ua ke ntawm boiler), tshwj xeeb yog rau cov cua sov ntxiv thaum lub sij hawm vuam thiab cov ntaub thaiv.

Ntsib International Boiler Codes

ASTM A516 Gr.55 ua raws li kev ua haujlwm loj thoob ntiaj teb thiab siab lub nkoj siab, ua rau nws tau txais cov ntaub ntawv tseem ceeb rau cov ntawv thov tseem ceeb. Nws cov kev lees txais cov chiv ntawm nws cov kev ua tau zoo thiab kev ua raws li cov yuav tsum tau ua kom zoo:

• ASME BOILER THIAB SIAB RAU LUB HLIS CODE: Cov khoom tau pom zoo hauv Tshooj I (Tshooj Vessels) ntawm ASME code, uas nws tau xaiv raws li SA-516 GR. 516 GR.55.
• Cov Txheej Txheem Thoob Ntiaj Teb: Qhov tshwj xeeb muaj cov qib sib npaug hauv cov qauv hauv ntiaj teb, suav nrog ENGAN8 P265GHID hauv lwm cov qauv hauv cheeb tsam.
• Kev tswj txoj cai: cov ntaub ntawv ua tau raws li cov kev cai nyab xeeb ntawm kev ua haujlwm hauv kev ua haujlwm hauv Suav teb "uas qhia txog cov cuab yeej siv Suav" uas tau tua cov hlau uas muaj kev sib tw thiab kev sib tw.

Kev Tsim Nyog Zoo thiab Kev Ntsuam Xyuas

Txhawm rau kom muaj kev ua tau zoo thiab ua tau zoo, ASTM A516 Gr.55 Raug Cai nrog rau cov kev ntsuas zoo:

• Tsis - Kev sim ua: Ultrasonic kuaj raws cov qauv xws li tus qauv xws li cov qauv xws li cov qauv xws li cov qauv ntawm G47013.3 .3
• Cov khoom yuav tsum muaj: Tus qauv tsim nyog tias cov phiaj yuav tsum pub dawb los ntawm cov kab nrib pleb, npuas, cov kiav txhab, thiab cov quav uas tuaj yeem cuam tshuam rau kev pabcuam. Txhua qhov kev tso cai nyob sab nraud tsis txaus ntseeg yuav tsum tau tshem tawm nyob rau hauv cov kev ua kom tuab tuab.
• Cov ntawv pov thawj yuav tsum muaj: Cov tuam txhab yuav tsum muab cov ntaub ntawv kev ntsuas tshuaj lom neeg thiab cov tshuab cua sov rau txhua lub tshav kub lossis phaj raws li tau teev tseg.

Cov kev tswj hwm zoo uas ua kom cov khoom siv tau muab cov ntawv thov boiler tseem ceeb, qhov twg ua tsis tiav.

Kev Tiv Thaiv Tshwj Xeeb Boiler

ASTM A516 Gr.55 Pom daim ntawv thov hauv ntau qhov tseem ceeb boiler cov khoom uas kev ntseeg tau hauv qab lub siab yog qhov tseem ceeb:

• Boiler drums and shells: The primary pressure-containing components where the combination of strength and toughness provides safe containment of high-pressure steam.
• Cov nkoj siab: ntau cov nkoj nyob hauv boiler tshuab uas ua haujlwm ntawm kev ntsuas siab thiab kub.
• Kev sib hloov cua sov kub thiab Separator: Cheebtsam uas muaj kev paub thermal cycling thiab siab hloov pauv.
• Nuclear Reactor siab plhaub: Rau qis - kub nuclear thov qhov twg notch nruj yog qhov tseem ceeb.

Cov khoom siv cov khoom sib npaug ua nws haum rau ob qho tib si nyob ruaj ruaj thiab mobile Boiler suav nrog ntau tiam neeg, roj av ua cov nroj tsuag.

Kev ua tau zoo hauv kev pabcuam

Kev siv ntawm ASTM A516 Gr.55 hauv cov ntawv thov Boiler muab ntau yam kev ua haujlwm tseem ceeb:

• Ntev -}} sij hawm kev ntseeg tau: cov khoom siv cov khoom siv thiab kev coj ua zoo meej tias kev ua tau zoo thoob plaws hauv lub neej.
• Fabrication nyem: Zoo heev Veldability thiab formability pub rau cov qauv tsim qauv thiab kev hloov kho teb thaum tsim nyog.
• Kev Ua Phem Rau Kev Ua Si: Cov khoom zoo heev muaj kev tiv thaiv kom tawg qhov pib thiab kev hais tawm los ntawm kev ua haujlwm hnyav.
• Tus nqi - ua tau zoo: piv rau cov nyiaj ntau dua Alloy, Astm A516 Gr.55 muab kev sib npaug ntawm kev ua tau zoo thiab tus nqi rau ntau qhov kev thov boiler.

Cov kev zoo piav qhia vim li cas cov khoom siv no tseem yog cov khoom lag luam nrov thoob plaws ntiaj teb thoob ntiaj teb, tshwj xeeb yog cov xim dav dav tsis muaj tseeb.

ASTM A516 Gr.55 Hlau daim phiaj sawv cev lub thev naus laus zis siab dua kev daws teeb meem kom tau raws li cov kev lag luam boiler. Los ntawm nws ua tib zoo ntaus tshuaj lom neeg sib xyaw ua ke, tswj kev kho mob, thiab weldability yuav tsum muaj kev sib xyaw ua ke hauv cov ntawv thov boiler.

Nws ua raws nrog cov kab lis haujlwm thoob ntiaj teb thiab cov qauv, txuas nrog nws cov kev xaiv txhim khu kev ua haujlwm rau engineers thiab cov neeg tsim qauv thoob ntiaj teb. Raws li boiler thev naus laus zis txuas ntxiv mus rau kev ua haujlwm siab dua rau kev ua tiav cov hom phiaj no thaum tswj hwm tus qauv kev nyab xeeb tshaj plaws. Cov txuas ntxiv dav ntawm qhov no tshwj xeeb thoob plaws hauv kev lag luam thoob ntiaj teb Underscores nws cov hauj lwm zoo hauv kev sib ntsib ntawm boiler tsim thiab kev ua haujlwm.

Ncav cuag peb

Yog tias koj xav paub ntau ntxiv txog GNEE cov khoom, koj tuaj yeem xa email raualloy@gneesteelgroup.comCov. Peb zoo siab tshaj plaws los pab koj.