Astm A139 Cov Yeeb Nkab Hlau Txheem
Qhia txog S235 J0 kauv hlau yeeb nkab - ib qho kev daws teeb meem ntau yam tsim los ua kom tau raws li ntau yam kev xav tau ntawm kev lag luam niaj hnub. Tsim tawm hauv lub Hoobkas zoo tshaj plaws nyob hauv Cangzhou City, Hebei Province, peb lub tuam txhab tau ua tus thawj coj hauv kev tsim hlau txij li xyoo 1993. Lub tuam txhab npog thaj tsam ntawm 350,000 square meters thiab muaj tag nrho cov cuab tam ntawm RMB 680 lab. Peb zoo siab uas muaj cov neeg ua haujlwm mob siab rau ntawm 680 tus kws tshaj lij uas mob siab rau kev muab cov khoom zoo.
Ib qho ntawm cov yam ntxwv zoo tshaj plaws ntawm S235 J0 kauv hlau yeeb nkab yog nws qhov kev hloov pauv zoo kawg nkaus hauv txoj kab uas hla thiab phab ntsa tuab. Qhov kev hloov pauv no tso cai rau peb ua kom tau raws li ntau yam kev xav tau tsim khoom, tshwj xeeb tshaj yog hauv kev tsim cov yeeb nkab tuab phab ntsa zoo. Txawm hais tias koj xav tau yeeb nkab rau kev tsim kho, roj thiab roj av, lossis lwm yam kev siv hauv kev lag luam, peb cov yeeb nkab S235 J0 tau tsim los ua kom tau raws li qhov nruj.ASTM A139cov qauv yeeb nkab hlau kom ntseeg tau tias muaj kev ntseeg siab thiab kev ua tau zoo txawm tias nyob rau hauv qhov chaw xav tau tshaj plaws.
Peb txoj kev cog lus rau qhov zoo thiab kev tsim kho tshiab txhais tau tias txhua daim ntawm S235 J0 kauv hlau yeeb nkab raug kuaj xyuas thiab tswj xyuas kom zoo, kom ntseeg tau tias cov khoom koj tau txais tsis yog ua tau raws li cov qauv kev lag luam xwb. Nrog peb cov kev paub dhau los thiab kev txawj ntse, peb cog lus tias yuav muab cov kev daws teeb meem zoo tshaj plaws rau peb cov neeg siv khoom kom tau raws li lawv cov kev xav tau tshwj xeeb.
Cov Khoom Siv Qhia Txog Khoom
| qib hlau | lub zog tsawg kawg nkaus Mpa | Lub zog tensile | Qhov ntev tsawg kawg nkaus % | Lub zog cuam tshuam tsawg kawg nkaus J | ||||
| Qhov tuab uas tau teev tseg mm | Qhov tuab uas tau teev tseg mm | Qhov tuab uas tau teev tseg mm | ntawm qhov kub thiab txias ntawm | |||||
| <16 | > 16≤40 | <3 | ≥3≤40 | ≤40 | -20 ℃ | 0℃ | 20 ℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Cov Tshuaj Lom Zem
| Qib hlau | Hom de-oxidation a | % los ntawm pawg, siab tshaj plaws | ||||||
| Lub npe hlau | Tus lej hlau | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1,40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1,50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1,50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. Txoj kev deoxidation yog raws li nram no:FF: Cov hlau tua tag nrho uas muaj cov khoom sib txuas nrog nitrogen hauv qhov ntau txaus los khi cov nitrogen uas muaj (piv txwv li tsawg kawg 0,020% tag nrho Al lossis 0,015% soluble Al).b. Tus nqi siab tshaj plaws rau nitrogen tsis siv yog tias cov tshuaj lom neeg qhia tias muaj tsawg kawg nkaus tag nrho Al cov ntsiab lus ntawm 0,020% nrog qhov tsawg kawg nkaus Al/N piv ntawm 2:1, lossis yog tias muaj lwm cov khoom sib txuas N-khi txaus. Cov khoom sib txuas N-khi yuav tsum tau sau tseg rau hauv Daim Ntawv Tshuaj Xyuas. | ||||||||
Qhov Zoo ntawm Khoom
1. Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm ASTM A139 cov yeeb nkab hlau yog nws qhov yooj ywm hauv qhov loj thiab phab ntsa tuab. Qhov kev hloov pauv no tso cai rau cov chaw tsim khoom tsim cov yeeb nkab ntau qhov ntau thiab tsawg kom tau raws li ntau yam kev xav tau ntawm cov haujlwm.
2. Lub peev xwm tsim khoom ntawm peb lub tuam txhab, nyob hauv Cangzhou, Hebei Xeev, txhim kho qhov zoo ntawm ASTM A139.
3. Tsim muaj xyoo 1993, peb lub Hoobkas npog thaj tsam ntawm 350,000 square meters, muaj tag nrho cov cuab tam ntawm RMB 680 lab, thiab ntiav 680 tus neeg ua haujlwm txawj. Cov khoom siv dav dav no ua rau peb ua tau raws li ntau yam kev xav tau ntawm cov neeg siv khoom thaum tswj hwm cov qauv tsim khoom siab.
Qhov tsis zoo ntawm cov khoom
1. Tus qauv ASTM A139 yuav tsis suav nrog txhua qhov kev cai tshwj xeeb rau qee qhov kev siv, ua rau muaj kev ua tau zoo tsawg nyob rau hauv cov xwm txheej hnyav.
2. Cov txheej txheem tsim khoom yuav nyuaj dua thiab kim dua li lwm cov qauv, uas yuav cuam tshuam rau tus nqi thiab kev muaj.
Cov nyhuv
S235 J0 Cov Yeeb Nkab Hlau Kauv yog qhov tshwj xeeb tshaj yog rau cov chaw tsim khoom vim nws qhov kev hloov pauv tau. Lub peev xwm los kho qhov loj thiab phab ntsa tuab ua rau muaj kev tsim cov yeeb nkab zoo, phab ntsa tuab uas ua tau raws li cov kev xav tau tshwj xeeb ntawm cov haujlwm. Qhov kev ywj pheej no tsis yog tsuas yog ua rau kev tsim khoom zoo dua xwb, tab sis kuj ua kom ntseeg tau tias cov khoom kawg tuaj yeem tiv taus ntau yam xwm txheej ib puag ncig thiab kev nyuaj siab, ua rau nws haum rau ntau yam kev siv.
Peb lub Hoobkas nyob hauv Cangzhou, Hebei Xeev, thiab tau ua tus neeg tseem ceeb hauv kev lag luam hlau txij li thaum nws tau tsim tsa xyoo 1993. Peb lub Hoobkas npog thaj tsam ntawm 350,000 square meters, muaj tag nrho cov cuab tam ntawm RMB 680 lab, thiab ntiav 680 tus neeg ua haujlwm txawj. Cov khoom siv muaj zog no ua rau peb tsim cov kav hlau zoo uas ua tau raws li ASTM A139 cov qauv, kom ntseeg tau tias peb cov khoom ua tau raws li cov kev cai nruj ntawm peb cov neeg siv khoom.
ASTM A139yeeb nkab hlauTus qauv muaj feem cuam tshuam loj heev rau kev tsim cov yeeb nkab hlau S235 J0, txhim kho kev hloov pauv ntawm kev tsim khoom thiab cov khoom zoo. Thaum peb txuas ntxiv tsim kho tshiab thiab nthuav peb lub peev xwm, peb tseem cog lus tias yuav muab cov kev daws teeb meem hlau zoo tshaj plaws uas ua tau raws li qhov xav tau ntawm kev lag luam.
Cov Lus Nug Feem Ntau
Q1: ASTM A139 yog dab tsi?
ASTM A139 yog ib qho qauv txheem uas piav qhia txog cov kev cai rau cov yeeb nkab hlau uas tsis kam hluav taws xob. Cov yeeb nkab no feem ntau siv rau hauv cov ntawv thov uas tsis tshua muaj siab thiab paub txog lawv lub zog thiab kev ruaj khov. Tus qauv no ua kom ntseeg tau tias cov yeeb nkab ua tau raws li cov khoom siv kho tshuab thiab cov tshuaj lom neeg tshwj xeeb, ua rau lawv haum rau ntau yam kev siv hauv kev lag luam.
Q2: Cov txiaj ntsig ntawm S235 J0 kauv hlau yeeb nkab yog dab tsi?
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm S235 J0 kauv hlau yeeb nkab yog nws qhov yooj ywm hauv txoj kab uas hla thiab phab ntsa tuab. Qhov kev hloov pauv no tso cai rau cov chaw tsim khoom tsim cov yeeb nkab zoo, phab ntsa tuab uas tuaj yeem tiv taus qhov siab thiab kev ntxhov siab loj heev. Lub peev xwm los kho cov lus qhia no ua rau S235 J0 yeeb nkab yog qhov kev xaiv zoo rau cov haujlwm uas xav tau qhov loj me thiab lub zog tshwj xeeb.
