P295 HWMyog ib qho kev lees paub dav dav nyob sab Europe tus qauv steel qib tshwj xeeb tsim los rau kev siv lub nkoj siab, uas tau hais meej meej hauv EN 10028-2 tus qauv- cov lus qhia tshwj xeeb uas tswj cov kev cai rau cov hlau siv hauv siab- cov khoom siv bearing. Raws li lub siab- zoo carbon-manganese steel, nws muaj qhov zoo tshaj plaws weldability, ua kom muaj ntau yam txheej txheem vuam yam tsis tas yuav tsum tau ua kom muaj cua sov ntau dhau, siab dua - qhov kub thiab txias ua haujlwm kom muaj kev ruaj ntseg ntawm cov qauv hauv lub sij hawm ntev - lub sij hawm siab - kub ua hauj lwm, thiab zoo kawg nkaus toughness los tiv thaiv nkig tawg. Cov cuab yeej zoo tshaj plaws no ua rau nws nyiam cov khoom siv rau kev tsim cov hlab ntsha siab, boilers, thiab cov khoom muaj feem cuam tshuam cov kabmob thoob plaws ntau yam kev lag luam.
P295GH tshuaj muaj pes tsawg leeg
|
P295GH tshuaj muaj pes tsawg leeg |
|||||||
|
Qib |
Cov ntsiab lus Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
|
P295 HWM |
0.08-0.20 |
0.40 |
0.80-1.50 |
0.025 |
0.015 |
0.020 |
0.012 |
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
|
0.30 |
0.30 |
0.08 |
0.020 |
0.30 |
0.03 |
0.02 |
|
P295GH Mechanical Property
|
Qib |
|
P295GH Mechanical Property |
|||||
|
Thickness |
Yield |
Tensilmie |
Elongation |
Impact Zog (KV J) min |
|||
|
P295 HWM |
mm |
Min Mpa |
Mpa |
Tsawg% |
-20 degree |
0 degree |
+20 degree |
|
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 |
|
Core Applications
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.
Cov Cai Thov
Qhov kub thiab txias: Haum rau kev ua haujlwm ntev -Less tshaj lossis sib npaug li 500℃. Qhov tsawg kawg nkaus kev cuam tshuam lub zog ncav cuag 34J ntawm 0 degree, thiab nws tuav zoo toughness txawm nyob rau ntawm -20℃(kev cuam tshuam lub zog loj dua los yog sib npaug rau 27J).
Kev xav tau siab: Sib tw ua haujlwm siab sib xws rau nws cov khoom siv tshuab. Rau cov phaj Tsawg dua los yog sib npaug ntawm 100mm tuab, tawm lub zog ntau dua lossis sib npaug ntawm 295MPa thiab tensile lub zog 410-530MPa, ua tau raws li qhov xav tau nruab nrab thiab siab siab.
Welding condition: Low hydrogen welding materials (e.g., E7018) are recommended. Preheating to 100-150℃ is required when plate thickness >30 hli; tsis muaj preheating xav tau tsawg dua los yog sib npaug rau 30mm. Ncej-vuam txias npaum li cas yuav tsum tau tswj kom tsis txhob tawg.
Txheej Txheem & Kev Tshuaj Xyuas Cov Cai: Muab nyob rau hauv kub- dov, normalized los yog tswj dov lub xeev (normalization nyiam rau siab - khoom siv siab). Tsim nyog rau qhov tsis yog - kuaj kev puas tsuaj xws li ultrasonic (UT) thiab kev tshuaj ntsuam xyuas qhov sib nqus (MT).
Ib puag ncig xwm txheej: Adapts rau kev lag luam ib puag ncig. Rau H₂S-muaj ib puag ncig acidic, tiv thaiv-hydrogen-kev ntsuas tawg yuav tsum ua raws li kev pom zoo.
Cov txheej txheem tau txais los ntawm P295GH
Kub Rolling txheej txheem: Raws li cov txheej txheem tseem ceeb, nws tau ua tiav ntawm 1100-1200℃. Lub steel billet yog dov rau hauv daim hlau los yog profiles los ntawm multi-pass dov, uas refines lub grain qauv thiab txhim kho lub zog thiab toughness. Kev kub siab tshaj 1250℃yog nruj me ntsis txwv tsis pub cov nplej coarsening.
Normalizing Kev kho cua sov: Nws yog tus txheej txheem xa khoom cua sov txheej txheem. Cov hlau yog rhuab mus rau 890-950 degree, tuav rau ib lub sij hawm kom ua tau zoo ib yam austenitization, thiab ces cua txias. Cov txheej txheem no ua kom cov qauv zoo ib yam thiab cov khoom siv kho tshuab ruaj khov ntawm P295GH.
Vuam txheej txheem: Cov txheej txheem muaj xws li phau ntawv arc vuam, roj hlau arc vuam thiab submerged arc vuam. Tsawg- cov khoom siv hydrogen vuam tau txais yuav. Rau cov phaj tuab dua 30mm, preheating rau 100-150℃yog yuav tsum tau, thiab interpass kub yog tswj hauv qab no 300℃los xyuas kom meej weld zoo.
Txias txheej txheem: Haum rau txias dabtsi yog khoov, stamping thiab lwm yam txheej txheem. Qhov siab tshaj plaws txias deformation tus nqi yog tswj nyob rau hauv 15%. Kev ntxhov siab nyem annealing ntawm 550-650℃yuav tsum tau tom qab txias txias txias kom tshem tawm cov kev ntxhov siab seem.
Txiav thiab Machining txheej txheem: Nplaim txiav, plasma txiav thiab tshuab txiav yog muaj rau blanking. Machining yog ua nrog siab - steel ceev los yog cemented carbide cov cuab yeej, nrog rau kev txiav ceev thiab pub tus nqi kom zoo.
Yog tias koj xav paub ntxiv txog GNEE cov khoom, koj tuaj yeem xa email rau beam@gneesteelgroup.com. Peb zoo siab tshaj los pab koj.
Tus qauv twg P295GH ua raws?
P295GH ua raws li European tus qauv EN 10028-2, uas qhia txog cov txheej txheem kev xa khoom rau cov hlau tsis muaj hlau thiab hlau hlau rau lub hom phiaj siab, suav nrog tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab thiab cov kev xeem.
Puas yog P295GH weldable? Cov txheej txheem vuam zoo li cas?
Yog lawm, P295GH muaj weldability zoo. Cov txheej txheem vuam tsim nyog suav nrog phau ntawv arc vuam (MMA), roj hlau arc vuam (GMAW), submerged arc vuam (SAW) thiab tungsten inert roj vuam (TIG) yam tsis muaj preheating nyob rau hauv ib txwm tuab.
P295GH puas yuav tsum tau preheating ua ntej vuam?
Preheating is not required for P295GH when welding thin plates (≤12mm) under normal ambient temperature. For thick plates (>12mm) los yog qis- qhov kub thiab txias ib puag ncig, preheating rau 50-100℃yog pom zoo kom tiv thaiv cov kab mob khaub thuas.
Qhov txawv ntawm P295GH thiab P235GH yog dab tsi?
Qhov sib txawv tseem ceeb nyob rau hauv lub zog tawm los: P295GH muaj lub zog tawm los ntawm Ntau dua lossis sib npaug rau 295 MPa, thaum P235GH siab dua lossis sib npaug rau 235 MPa. P295GH kuj tseem muaj zog tensile ntau dua, haum rau kev xav tau ntau dua -cov xwm txheej kabmob ntau dua li P235GH.
Dab tsi yog cov tshuaj tseem ceeb ntawm P295GH?
Cov tshuaj lom neeg tseem ceeb ntawm P295GH yog: C Tsawg dua lossis sib npaug ntawm 0.22%, Si Less dua lossis sib npaug rau 0.35%, Mn 1.00-1.60%, P Tsawg dua lossis sib npaug rau 0.025%, S Tsawg dua lossis sib npaug rau 0.015%, thiab cov kab lus zoo li Cu, Ni, Cr., Mo kom paub meej
Dab tsi yog qhov thickness ntau ntawm P295GH daim hlau?
Lub thickness ntau ntawm P295GH daim hlau yog 3mm-150mm. Rau cov phaj tuab, kev tswj xyuas zoo thiab kev sim yuav tsum tau ua kom muaj kev sib haum xeeb thiab tsis txhob muaj qhov tsis xws luag xws li porosity thiab inclusions.
Cov kev sim twg siv rau P295GH?
Cov qauv kev sim ntau rau P295GH suav nrog tshuaj lom neeg kev tshuaj ntsuam xyuas (spectrometry), kev ntsuas khoom siv tshuab (tensile, cuam tshuam, hardness), tsis yog - kuaj kev puas tsuaj (ultrasonic, radiographic, magnetic particle test) thiab kuaj metallographic.
Lub hardness ntau ntawm P295GH yog dab tsi?
Brinell hardness (HB) ntawm P295GH nyob rau hauv lub normalized lub xeev yog feem ntau 137-187 HB. Qhov hardness range no ua kom zoo machinability thiab weldability thaum tuav lub zog txaus thiab toughness.
Dab tsi yog cov khoom siv kho tshuab ntawm P295GH ntawm chav tsev kub?
Nyob rau hauv chav tsev kub, P295GH muaj ib tug yield zog ntawm ntau tshaj los yog sib npaug zos rau 295 MPa, tensile lub zog ntawm 460-630 MPa, elongation tom qab tawg ntawm ntau tshaj los yog sib npaug rau 23%, thiab cuam tshuam lub zog (KV) ntawm ntau tshaj los yog sib npaug rau 30 J ntawm 20 degree, kom ntseeg tau tias zoo mechanical kev ua tau zoo.