Q460E thiabQ460D ob leeg koom nrog Q460 series ntawm qis- alloy siab- lub zog cov qauv hlau thiab ua raws li GB / T 1591 - 2018 tus qauv. Lawv qhov sib txawv tseem ceeb yog nyob rau hauv qhov qis - qhov kub thiab txias qhov kev ua tau zoo thiab qhov nruj ntawm kev tswj tsis huv, uas ua rau muaj qhov tsis sib xws hauv cov nqi tsim khoom thiab cov xwm txheej thov.
Tsawg-Tsuas Muaj Kev Ua Haujlwm Zoo
Qhov sib txawv tseem ceeb ntawm ob qhov nyob hauv qhov ntsuas kub ntawm Charpy V-qhov ntsuas qhov ntsuas qhov cuam tshuam thiab cov kev xav tau zoo sib xws, uas txiav txim siab lawv qhov kev hloov pauv mus rau qis- qhov kub thiab txias ib puag ncig:
- Q460D: Nws yuav tsum xeem dhau qhov kev ntsuam xyuas ntawm-20 degree, thiab qhov tsawg kawg nkaus tus nqi ntawm qhov cuam tshuam nqus zog yog 34J. Qhov kev ua tau zoo no ua rau nws tiv taus cov pob txha tawg thaum siv nyob rau hauv ib puag ncig txias, ua tau raws li qhov pib qis - qhov kub thiab txias xav tau ntawm cov qauv.
- Q460E: Nws muaj cov kev xav tau siab dua thiab yuav tsum dhau qhov kev xeem cuam tshuam ntawm-40 degree, nrog rau qhov cuam tshuam nqus zog kuj tsis tsawg dua 34J. Hauv kev tsim khoom tiag tiag, qhov cuam tshuam lub zog ntawm ntau Q460E steels tuaj yeem ncav cuag 60 - 80J. Nws tuaj yeem tuav ruaj khov txawm tias nyob rau hauv ultra-qis- qhov kub thiab txias, kom tsis txhob muaj kev puas tsuaj tshwm sim los ntawm huab cua txias.
Cov tshuaj muaj pes tsawg leeg: Kev tswj nruj dua ntawm kev phom sij tsis zoo rau Q460ETxhawm rau ua kom tau zoo dua ultra- qis- qhov kub thiab txias, Q460E muaj kev tswj hwm nruj dua cov teeb meem tsis huv hauv nws cov tshuaj muaj pes tsawg leeg piv nrog Q460D. Qhov sib txawv tseem ceeb tau qhia hauv cov lus hauv qab no:
| Element | Q460D Cov ntsiab lus ntau | Q460E Cov ntsiab lus ntau | Core Impact |
|---|---|---|---|
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.030% | Tsawg dua lossis sib npaug li 0.020% | Phosphorus yooj yim ua rau grain ciam teb embrittlement. Cov ntsiab lus qis dua hauv Q460E ua kom cov hlau tsis ua rau nkig ntawm -40 degree. |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.025% | Tsawg dua lossis sib npaug li 0.020% | Sulfur forms brittle sulfide inclusions. Kev tswj nruj me ntsis ntawm cov ntsiab lus sulfur hauv Q460E txo qhov kev pheej hmoo ntawm kev tawg thaum lub sij hawm qis - qhov kub thiab txias. |
Cov ntsiab lus ntawm cov ntsiab lus tseem ceeb xws li carbon (C Tsawg dua lossis sib npaug li 0.20%), manganese (Mn Tsawg dua lossis sib npaug li 1.80%), thiab silicon (Si Tsawg dua lossis sib npaug li 0.60%) hauv ob yog qhov tseem ceeb tib yam. Ob leeg ntxiv cov kab niobium, vanadium, thiab titanium los ua kom cov nplej, tab sis qhov feem ntawm micro- alloy cov ntsiab lus hauv Q460E yuav raug kho kom haum rau ultra- qis- qhov kub thiab txias.
Kev Tsim Khoom & Kev Ua Haujlwm: Cov nqi siab dua thiab cov txheej txheem nruj dua rau Q460E
- Smelting txheej txheem: Ob leeg yog smelted nyob rau hauv converters los yog hluav taws xob rauv. Txawm li cas los xij, Q460E feem ntau xav tau cov txheej txheem ntxiv xws li kev hloov kho theem nrab thiab lub tshuab nqus tsev degassing kom txo cov ntsiab lus ntawm cov pa roj thiab impurities hauv cov hlau molten. Q460D tuaj yeem ua tau raws li qhov xav tau zoo nrog cov txheej txheem ua kom zoo dua qub.
- Vuam Requirements: Q460D tsuas yog xav tau qhov yooj yim preheating (80 - 100 degree) thaum vuam. Rau Q460E, tshwj xeeb tshaj yog cov phaj tuab, qhov ntsuas kub ua ntej yuav tsum tau nce mus rau 100 - 120℃. Ntxiv mus, tsawg- cov khoom siv hydrogen welding yuav tsum tau siv, thiab tom qab- vuam cov cua sov yuav tsum tau ua kom tsis txhob muaj cov kab nrib pleb uas tshwm sim los ntawm kev ntxhov siab uas cuam tshuam rau qis- qhov kub thiab txias.
- Nqi: Cov txheej txheem smelting thiab kev ua haujlwm nyuaj ua rau cov nqi tsim khoom ntawm Q460E 15 - 30% siab dua li ntawm Q460D.
Daim Ntawv Thov Scenario: Txawv Adaptability rau Kub Ib puag ncig
Qhov sib txawv ntawm qhov qis- qhov kub thiab txias ua rau ob lub hlau tsom rau ntawm daim ntawv thov sib txawv:
- Q460D: Nws yog qhov tsim nyog rau cov cheeb tsam txias uas qhov kub tsawg kawg yog tsis tshua muaj qis dua -20 degree, xws li sab qaum teb Xinjiang thiab Inner Mongolia hauv Suav teb. Nws cov kev siv ib txwm muaj xws li cua zog ntauwd thav duab nyob rau hauv cov cheeb tsam txias, mining machinery chassis, thiab cov khoom tseem ceeb ntawm nruab nrab thiab me txuas hniav nyob rau hauv cov cheeb tsam txias. Nws tuaj yeem sib npaug ntawm cov qauv tsim muaj zog thiab tus nqi hauv cov xwm txheej no.
- Q460E: Nws yog siv nyob rau hauv ultra- cheeb tsam txias los yog siab - tej yaam num kev nyab xeeb. Piv txwv li, nws yog siv rau cov qauv hlau ntawm cov chaw tshawb fawb polar, lub ntsiab girders ntawm cov choj nyob rau hauv Siberia, lub auxiliary qauv ntawm offshore platforms nyob rau hauv lub hiav txwv txias, thiab cov cia tso tsheb hlau luam ntawm low- kub roj thiab roj. Cov xwm txheej no yuav tsum tau ua haujlwm ntev -lub sijhawm ua haujlwm ntawm qhov kub qis dua -20 degree, thiab Q460E yog cov khoom tseem ceeb los xyuas kom muaj kev nyab xeeb ntawm cov qauv.
Kev sib npaug thoob ntiaj teb: Cov qauv sib txawv sib txawv
Muaj qhov sib txawv ntawm lawv cov qib sib npaug sib npaug hauv cov qauv thoob ntiaj teb, uas yooj yim rau kev hloov khoom siv hauv kev hla - tej yaam num ciam teb:
- Q460D: Nws yog roughly sib npaug rau S460N hauv European qauv. Tom qab qhov kev ntsuas qhov ntsuas kub yog -20 degree, uas yog raws li qhov ntsuas kub qis ntawm Q460D.
- Q460E: Nws yog ze rau S460NL hauv European qauv. Ob leeg ua tau raws li lub zog tawm los ntawm 460MPa thiab qhov yuav tsum tau muaj kev cuam tshuam ntawm -40℃, thiab tuaj yeem hloov tau rau ib leeg nyob rau hauv feem ntau ultra- tej yaam num kub kub.
Puas muaj qhov sib txawv ntawm lub zog tawm los thiab lub zog tensile ntawm Q460D thiab Q460E?
Tsis muaj qhov sib txawv tseem ceeb. Ob leeg koom nrog Q460 series ntawm qis- alloy siab- lub zog steels. Lawv lub zog tawm los tsawg kawg yog 460 MPa (txo kom siab dua lossis sib npaug li 380 MPa rau 100mm- cov phaj tuab), thiab lawv lub zog tensile yog li ntawm 550-720 MPa. Qhov sib txawv tseem ceeb tsis yog nyob rau hauv lub zog tsis muaj zog, tab sis nyob rau hauvqis-kub los cuam tshuam toughness.
Vim li cas Q460E feem ntau xav tau kev cai tsim khoom los ntawm kev pom zoo, txawm tias nws yog qib tus qauv hauv tebchaws?
Q460E yog qib siab - kev ua tau zoo nyob rau hauv Q460 series nrog nruj qis - qhov kub thiab txias yuav tsum tau ua, thiab nws tsis yog ib qho loj npaum li cas - qib tsim. Nws yuav tsum ua kom tau raws li tus qauv toughness ntawm -40 degree, nrog nruj nruj txwv tsis pub muaj kev puas tsuaj xws li sulfur thiab phosphorus (S Tsawg dua lossis sib npaug li 0.020%). Ordinary smelting txheej txheem tawm tsam kom ua tau raws li kev ruaj ntseg. Yog li, cov tuam ntxhab feem ntau tsim nws raws li cov neeg siv khoom pom zoo, siv cov txheej txheem tshwj xeeb xws li ultra{11}} tsis muaj sulfur- phosphorus smelting thiab nqus degassing. Tsis tas li ntawd, ib qho kev ntsuas -40℃cuam tshuam yog xav tau los xyuas qhov kev ua tau zoo, ua rau nws yog cov khoom siv qib siab.
Peb puas yuav tsum paub qhov txawv ntawm cov txheej txheem vuam rau Q460D thiab Q460E?
Yog lawm. Ob qib muaj qhov sib npaug ntawm cov pa roj carbon monoxide (CEV) Tsawg dua lossis sib npaug ntawm 0.53, tab sis lawv cov ntsiab lus vuam sib txawv vim qhov sib txawv qis -kub toughness yuav tsum tau. Rau Q460D vuam, qis- hydrogen electrodes raug pom zoo, thiab qhov yooj yim preheating kub ntawm 80-100℃yog txaus rau tuab daim hlau. Rau Q460E, daim hlau loj dua lossis sib npaug li 50 hli tuab yuav tsum tau ua kom sov siab dua ntawm 110-130 degree. Ntxiv mus, vuam consumables nrog diffusible hydrogen Tsawg dua los yog sib npaug li 5ml / 100g yuav tsum tau siv. Rau cov khoom tseem ceeb, tom qab-weld stress relief annealing ntawm 550-600℃yog qhov yuav tsum tau ua kom tsis txhob muaj kev ntxhov siab welding los ntawm impairing ultra- qis- kub toughness thiab tsis txhob txias cracking.