P295 HWMyog ib qho uas tsis yog -alloy siab lub nkoj steel tsim raws li European tus qauv EN 10028-2. Nws yog tsim tshwj xeeb rau cov chaw ua haujlwm kub kub thiab muaj cov yam ntxwv ntawm weldability zoo, plasticity, thiab toughness. Nws yog cov khoom siv tseem ceeb hauv kev tsim cov boilers, cov hlab ntsha siab, thiab cov khoom siv hluav taws xob.
Mechanical Properties ntawm EN 10028 - P295GH
| Hom | Thickness (hli) | Yield zog MPa (min) |
Tensile zog MPa |
Elongation % (min) |
Impact Zog (KV J) (min) |
||
|---|---|---|---|---|---|---|---|
| -20 degree | 0 degree | +20 degree | |||||
| Li qub | Tsawg dua los yog sib npaug li 16 |
295 | 460 - 580 | 21 | 27 | 34 | 40 |
| 16>mus tsawg dua los yog sib npaug li 40 | 290 | 460 - 580 | 21 | 27 | 34 | 40 | |
| 40>kom tsawg dua los yog sib npaug li 60 | 285 | 460 - 580 | 21 | 27 | 34 | 40 | |
| 60>kom tsawg dua los yog sib npaug li 100 | 260 | 460 - 580 | 21 | 27 | 34 | 40 | |
| 100>los tsawg dua los yog sib npaug li 150 | 235 | 440 - 570 | 21 | 27 | 34 | 40 | |
| 150>mus tsawg dua los yog sib npaug li 250 | 220 | 430 - 570 | 21 | 27 | 34 | 40 | |
Cov tshuaj muaj pes tsawg leeg ntawm EN 10028 - P295GH
| C | 0.08-0.20 Nws |
| Si | Tsawg dua lossis sib npaug li 0.40 |
| Mn | 0.90-1.50 Nws |
| P | 0.025 |
| S | 0.015 |
| Al | Tsawg dua lossis sib npaug li 0.020 |
| N | Tsawg dua lossis sib npaug li 0.012 |
| Cr | Tsawg dua los yog sib npaug li 0.30 |
| Cu | Tsawg dua los yog sib npaug li 0.30 |
| Mo | Tsawg dua lossis sib npaug li 0.08 |
| Nb | Tsawg dua lossis sib npaug li 0.020 |
| Ni | Tsawg dua los yog sib npaug li 0.30 |
| Ti | 0.03 |
| Vi | Tsawg dua los yog sib npaug li 0.02 |
P295GH ua
P295GH muaj cov txheej txheem ua tau zoo, ua kom haum rau ntau txoj hauv kev ua rau cov hlab ntsha siab. Cov ntsiab lus tseem ceeb ntawm kev ua haujlwm yog raws li hauv qab no:
Kub Ua Haujlwm: Haum rau kub dov, forging thiab kub dabtsi yog khoov. Pom zoo kub ntau: 1100-1200 degree. Tsis txhob overheating saum 1250℃los tiv thaiv cov nplej coarsening. Txias lawm tom qab ua haujlwm kub, tsis muaj cua txias kom tsis txhob tawv.
Vuam ua: Applicable to manual arc welding, gas shielded welding, submerged arc welding. Preheat 100-150℃ for plates >30 hli; tsis muaj preheating rau tsawg dua los yog sib npaug li 30mm. Siv cov khoom siv qis- hydrogen welding. Tswj kev sib tshuam kub tsawg dua lossis sib npaug li 300℃, post-weld qeeb txias.
Ua haujlwm txias: Yuav ua tau txias dabtsi yog khoov, stamping thiab shearing. Txias deformation yuav tsum tsis pub tshaj 15% kom tsis txhob muaj kev ntxhov siab ntau dhau. Rau qhov mob khaub thuas hnyav heev, kev ntxhov siab annealing (550-650 degree) yuav tsum tau tom qab.
Kev kho cua sov: Feem ntau xa hauv lub xeev tsis zoo (890-950 degree, cua txias). Kev kho cua sov tom qab vuam (PWHT) yog xaiv tau, 580-620℃rau kev ntxhov siab, tuav 1-2h, txias txias.
Txiav & Machining: Nws tuaj yeem raug txiav los ntawm nplaim hluav taws, ntshav lossis tshuab txiav. Machining nrog siab -ceev steel los yog cemented carbide cov cuab yeej, tsim nyog txiav ceev thiab pub tus nqi los xyuas kom meej nto.
Daim ntawv thov
Siab Vessel Manufacturing: Thawj daim ntawv thov teb, suav nrog cov tso tsheb hlau luam, cov khoom siv hluav taws xob sib hloov, cov tso tsheb hlau luam kheej kheej, thiab cov roj liquefied tanks. Nws yog dav siv nyob rau hauv kev lag luam siab-cov khoom siv bearing vim zoo siab thiab kub tsis kam.
Kev lag luam Petrochemical: Siv rau reactors, roj sib cais yees, distillation units, thiab roj pipelines. Nws hloov mus rau corrosive thiab siab -qhov chaw ua haujlwm siab hauv cov roj refining thiab tshuaj ua haujlwm.
Kev lag luam fais fab: Siv rau boiler Cheebtsam, chav turbines, siab - cov kav dej siab ntawm cov chaw nres tsheb hydropower, thiab condenser systems. Haum rau thermal thiab nuclear fais fab nroj tsuag nrog ntev - lub sij hawm siab - kub xav tau kev khiav hauj lwm.
Kev lag luam Nuclear: Tsim cov khoom tseem ceeb xws li nuclear reactor siab cov hlab ntsha thiab cov kav dej, tso siab rau cov khoom siv kho tshuab ruaj khov thiab ua raws li kev nyab xeeb.
Kev lag luam metallurgical: Siv rau siab - kub thiab siab - cov cuab yeej siv siab xws li lub tshuab hluav taws xob thiab cov kav dej xa hluav taws xob, ua rau lub zog ua haujlwm hnyav ntawm qhov kub thiab txias thiab kev siv tshuab.
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
Tiv tauj peb ntawm beam@gneesteelgroup.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
Dab tsi yog qhov coefficient ntawm thermal expansion ntawm P295GH?
Lub linear thermal expansion coefficient ntawm P295GH yog hais txog 11.8 × 10⁻⁶ /℃(20-100 degree). Qhov kev ntsuas no yog qhov tseem ceeb rau kev ntsuas kev ntxhov siab thermal thiab kev tsim qauv ntawm cov khoom siv ua haujlwm hauv qhov kub thiab txias.
Dab tsi yog qhov tsawg kawg nkaus cuam tshuam lub zog xav tau rau P295GH?
Qhov tsawg kawg nkaus cuam tshuam lub zog (KV) ntawm P295GH ntawm 20℃yog 30 J (kuaj nrog V-notch specimens). Rau cov kev xav tau tshwj xeeb, lub zog cuam tshuam ntau dua tuaj yeem teev tau thaum xaj, thiab kev ntsuas ntawm qhov kub qis dua yog muaj.
P295GH puas tuaj yeem siv rau hauv petrochemical siab hlab ntsha?
Yog lawm, P295GH yog dav siv nyob rau hauv petrochemical siab hlab ntsha, xws li cia tank, reactors thiab separators. Nws tuaj yeem tiv taus lub siab thiab kub ntawm petrochemical media thiab muaj kev sib raug zoo nrog feem ntau cov organic media.
Puas yog P295GH yog hlau alloy lossis tsis yog- hlau alloy?
P295GH yog ib qho tsis yog- alloy carbon-manganese hlau. Nws tsis muaj ntau cov ntsiab lus alloying (Cr, Ni, Mo, thiab lwm yam) dhau qhov kev txwv tsis pub dhau, thiab nws cov kev ua tau zoo yog ua kom ntseeg tau los ntawm carbon thiab manganese.
Qhov txawv ntawm P295GH thiab P295NH yog dab tsi?
P295NH yog ib qho qis qis -kub siab ntawm lub nkoj hlau, thaum P295GH yog qib siab - kub resistant. P295NH tau zoo dua qis- qhov kub thiab txias (-20℃cuam tshuam lub zog Ntau dua lossis sib npaug li 30 J), haum rau qis- qhov kub thiab txias qhov xwm txheej.
P295GH puas tuaj yeem siv los ua chav boilers?
Yog lawm, P295GH yog cov khoom siv zoo tshaj plaws rau chav boilers. Nws tuaj yeem tiv taus qhov kub thiab txias ntawm chav, muaj cov thermal conductivity zoo thiab creep tsis kam, thiab ua tau raws li kev nyab xeeb ntawm boiler manufacturing qauv.
Lub thermal conductivity ntawm P295GH yog dab tsi?
Lub thermal conductivity ntawm P295GH yog hais txog 45 W / (m·K) ntawm chav tsev kub. Nws txo qis me ntsis nrog nce qhov kub thiab txias, uas yog ib qho tseem ceeb rau kev ntsuas kub hloov hauv boiler thiab kub exchanger tsim.
Puas yog P295GH corrosion-resistant?
P295GH muaj qhov yooj yim corrosion kuj nyob rau hauv atmospheric thiab me me corrosive ib puag ncig. Rau ib puag ncig hnyav (xws li, acidic, alkaline media), tiv thaiv - kev kho corrosion xws li tha xim, galvanizing lossis xaiv corrosion- cov alloys resistant yuav tsum tau.
Lub zog tensile ntawm P295GH yog dab tsi?
Ntawm 400 degree, lub zog tensile ntawm P295GH yog hais txog 380-550 MPa, uas yog qis dua chav tsev kub tab sis tseem tuav lub zog txaus rau siab - kub siab-kev siv cov ntawv thov. Tus nqi txo nrog nce kub.
Qhov txawv ntawm P295GH thiab Q245R (Suav tus qauv) yog dab tsi?
Q245R yog Suav siab hlab ntsha hlau (GB 713), thaum P295GH yog European tus qauv. P295GH muaj zog tawm los ntau dua (Ntau dua lossis sib npaug ntawm 295 MPa vs Ntau dua lossis sib npaug rau 245 MPa) thiab zoo dua siab dua - qhov kub thiab txias, haum rau ntau qhov kev xav tau.