JIS G 3452yog tus qauv Nyiv Pooj uas teev cov yeeb nkab hlau carbon uas siv rau kev thauj cov pa dej, dej, roj, roj av, cua, thiab lwm yam ntawm qhov siab ua haujlwm qis. JIS G 3452 tsuas muaj ib qib, SGP, uas tuaj yeem tsim los ntawm kev vuam tsis kam (ERW) lossis vuam taub qab.
JIS G 3452 Cov kav hlau yuav tsum tau tsim los ntawm kev siv cov txheej txheem tsim cov kav dej thiab cov txheej txheem ua tiav.
| Lub Cim ntawm qib | Lub cim ntawm cov txheej txheem tsim khoom | Kev faib tawm ntawm zinc-txheej | |
| Cov txheej txheem tsim cov yeeb nkab | Txoj kev ua tiav | ||
| SGP | Hluav taws xob tsis kam welded: E Taub qab vuam: B | Kub-tiav lawm: H Txias-tiav: C Raws li hluav taws xob tsis kam welded: G | Cov kav dej dub: cov kav dej tsis tau muab zinc-txheej Cov kav dej dawb: cov kav dej uas tau muab zinc-txheej |
Cov kav dej feem ntau yuav tsum xa tuaj raws li cov khoom tsim tawm. Cov kav dej txias tiav lawm yuav tsum tau annealed tom qab tsim tawm.
Yog tias cov yeeb nkab ua los ntawm ERW, cov welds ntawm sab hauv thiab sab nraud ntawm cov yeeb nkab yuav tsum tau tshem tawm kom tau txais qhov vuam du raws li cov duab ntawm cov yeeb nkab.
Yog tias muaj kev txwv vim yog txoj kab uas hla ntawm cov yeeb nkab lossis cov khoom siv, thiab lwm yam, qhov vuam ntawm qhov chaw sab hauv yuav tsis raug tshem tawm.
Kev Npaj: Ua ntej kub-dip galvanizing, qhov chaw ntawm cov yeeb nkab hlau yuav tsum tau ntxuav kom huv si los ntawm sandblasting, pickling, thiab lwm yam.
Tuab: Rau kev txheej zinc, yuav tsum siv cov zinc ingot Class 1 uas tau teev tseg hauv JIS H 2107 lossis zinc uas zoo sib xws rau qhov no.
Lwm yam: Lwm yam kev cai dav dav rau kev galvanizing yog raws li JIS H 8641.
Kev Ntsuas: Kev ntsuas qhov sib xws ntawm cov txheej galvanized raws li JIS H 0401 Tshooj 6.
Ntxiv rau cov ntsiab lus uas tau muab, lwm cov ntsiab lus alloying tuaj yeem ntxiv raws li qhov xav tau.
| Lub cim ntawm qib | P (Phosphorus) | S (Sulfur) |
| SGP | siab tshaj plaws 0.040% | siab tshaj plaws 0.040% |
JIS G 3452 muaj tsawg dua cov kev txwv rau cov tshuaj lom neeg vim JIS G 3452 feem ntau yog siv rau cov ntawv thov dav dav xws li kev thauj mus los ntawm cov pa dej, dej, roj, thiab roj av. Cov tshuaj lom neeg ntawm cov khoom siv tsis yog qhov tseem ceeb tshaj plaws, tab sis yog cov khoom siv kho tshuab ntawm cov yeeb nkab kom tiv taus qhov siab ua haujlwm.
Cov Khoom Tensile
| Lub cim ntawm qib | Lub zog tensile | Kev ntev, feeb,% | ||||||
| Daim ntawv sim | Kev Ntsuas kev taw qhia | Phab ntsa tuab, hli | ||||||
| N/mm² (MPA) | >3 ≤ 4 | >4 ≤ 5 | >5 ≤ 6 | >6 ≤ 7 | >7 | |||
| SGP | 290 feeb | Naj Npawb 11 | Sib luag rau lub axis ntawm lub yeeb nkab | 30 | 30 | 30 | 30 | 30 |
| Naj Npawb 12 | Sib luag rau lub axis ntawm lub yeeb nkab | 24 | 26 | 27 | 28 | 30 | ||
| Naj Npawb 5 | Perpendicular rau lub axis ntawm lub yeeb nkab | 19 | 20 | 22 | 24 | 25 | ||
Rau cov kav dej uas muaj txoj kab uas hla 32A lossis qis dua, cov nqi elongation hauv lub rooj no tsis siv tau, txawm hais tias lawv cov txiaj ntsig ntawm kev sim elongation yuav tsum tau sau tseg. Hauv qhov no, qhov yuav tsum tau elongation uas tau pom zoo ntawm tus neeg yuav khoom thiab tus neeg tsim khoom yuav raug siv.
Kev Ua Kom tiaj tiaj
Scope: Rau cov raj uas muaj lub cheeb nominal loj dua 50A (2B).
Tsis muaj kab nrib pleb thaum lub raj raug tiaj tiaj mus rau 2/3 ntawm sab nraud ntawm lub raj.
Kev khoov tau
Scope: Rau cov kav hlau uas muaj lub nominal diameter ≤ 50A (2B).
Khoov cov qauv mus rau 90 ° nrog lub vojvoog sab hauv ntawm rau npaug ntawm txoj kab uas hla sab nraud ntawm cov yeeb nkab yam tsis muaj kev tawg.
Txhua lub yeeb nkab hlau yuav tsum muaj kev sim hydrostatic siab lossis kev sim tsis puas tsuaj.
Kev Ntsuas Hydrostatic
Siab: 2.5 MPa;
Lub Sijhawm: Tuav tsawg kawg 5 vib nas this;
Kev Txiav Txim: cov yeeb nkab hlau nyob rau hauv lub siab tsis muaj to.
Kev Ntsuas Tsis Ua Rau Puas Tsuaj
Yuav siv tau qhov kev kuaj mob ultrasonic uas tau teev tseg hauv JIS G 0582. Qib kev kuaj mob yuav hnyav dua li Pawg UE.
Yuav siv tau qhov kev kuaj xyuas eddy tam sim no uas tau teev tseg hauv JIS G 0583. Qib kev kuaj yuav hnyav dua li Pawg EZ.
Rau cov kav dej uas muaj txoj kab uas hla nominal ≥ 350A (14B), xam txoj kab uas hla los ntawm kev ntsuas qhov ncig, uas yog qhov kev kam rau siab yog ± 0.5%.
Hom yeeb nkab kawg rau DN≤300A / 12B: threaded lossis tiaj tus kawg.
Hom yeeb nkab kawg rau DN≤350A/14B: tiaj tiaj.
Yog tias tus neeg yuav khoom xav tau qhov kawg beveled, lub kaum sab xis ntawm bevel yog 30-35 °, bevel dav ntawm ntug yeeb nkab hlau: max 2.4mm.
JIS G 3452 muaj cov sib npaug hauvASTM A53thiabGB/T 3091, thiab cov ntaub ntawv yeeb nkab uas tau teev tseg hauv cov qauv no tuaj yeem suav tias sib npaug rau ib leeg hauv kev ua tau zoo thiab kev siv.
Txij li thaum nws tau tsim tsa xyoo 2014, Botop Steel tau dhau los ua tus thawj coj ntawm cov yeeb nkab carbon steel hauv Northern China, paub txog kev pabcuam zoo heev, cov khoom lag luam zoo, thiab cov kev daws teeb meem dav dav.
Lub tuam txhab muaj ntau yam yeeb nkab hlau carbon thiab cov khoom lag luam cuam tshuam, suav nrog cov yeeb nkab hlau seamless, ERW, LSAW, thiab SSAW, nrog rau cov khoom siv yeeb nkab thiab cov flanges tiav. Nws cov khoom tshwj xeeb kuj suav nrog cov hlau alloys zoo thiab cov hlau stainless austenitic, tsim los ua kom tau raws li qhov xav tau ntawm ntau yam haujlwm yeeb nkab.
Tiv tauj peb, pab pawg kws tshaj lij npaj txhij los muab cov kev pabcuam zoo thiab cov kev daws teeb meem rau koj, tos ntsoov yuav koom tes zoo nrog koj, thiab ua ke qhib tshooj tshiab ntawm kev vam meej.
