JIS G 3444: Carbon steel hlab rau cov qauv dav dav.
Nws qhia txog qhov yuav tsum tau ua rau cov pa roj carbon steel kav siv hauv kev tsim kho vaj tse thiab kev tsim kho, xws li steel towers, scaffolding, foundation piles, foundation piles, thiab anti-slip pawg.
TSI 400steel yeeb nkab yog ib qho ntawm cov qib siab tshaj plaws, nrog cov khoom siv kho tshuab ntawm aTsawg tensile zog ntawm 400 MPathiab aYam tsawg kawg nkaus tawm lub zog ntawm 235 MPa. Nws zoo structural zog thiab durabilityua kom haum rau ntau yam kev siv sib txawv.
Raws li qhov tsawg kawg nkaus tensile lub zog ntawm cov yeeb nkab steel yog muab faib ua 5 chav kawm, uas yog:
STK 290, STK 400, STK 490, STK 500, STK 540.
Lub hom phiaj dav sab nraud: 21.7-1016.0mm;
Lub hauv paus pawg thiab pawg rau kev tiv thaiv av OD: hauv qab 318.5mm.
| Lub cim ntawm qib | Lub cim ntawm kev tsim khoom | |
| Kev tsim cov yeeb nkab | Txoj kev ua tiav | |
| TIAB SA 290 | Seamless: S Hluav taws xob kuj welded: E Lub taub hau welded: B Tsis siv neeg arc welded: A | Kub tiav: H Txias tiav: C Raws li hluav taws xob kuj welded: G |
| TSI 400 | ||
| TIAB SA 490 | ||
| TSI 500 | ||
| TIAB SA 540 | ||
Cov raj yuav tsum tau tsim los ntawm kev sib xyaw ua ke ntawm txoj kev tsim cov raj thiab cov txheej txheem tiav uas tau qhia.
Tshwj xeeb, lawv tuaj yeem muab faib ua xya hom hauv qab no, yog li xaiv hom tsim nyog raws li qhov xav tau sib txawv:
1) Kub-tiav seamless steel raj: -SH
2) Cold-tiav seamless steel raj: -SC
3) Raws li hluav taws xob tsis kam welded steel raj: -EG
4) Kub-tiav hluav taws xob kuj welded steel raj: -EH
5) Txias-tiav hluav taws xob tiv thaiv welded steel raj: -EC
6) Butt-welded steel raj: -B
7) Tsis siv neeg arc welded steel hlab: -A
| Tshuaj muaj pes tsawg leega% | |||||
| Lub cim ntawm qib | C (Carbon) | Si (Silicon) | Manganese (Mn) | P (phosphorus) | S (Sulfur) |
| max | max | max | max | ||
| TSI 400 | 0.25 | — | — | 0.040 ib | 0.040 ib |
| aCov ntsiab lus hlau tsis suav nrog hauv cov lus no thiab cov ntsiab lus qhia nrog "—" tuaj yeem raug ntxiv raws li qhov tsim nyog. | |||||
TSI 400yog cov hlau tsis tshua muaj hlau nrog zoo weldability thiab ua haujlwm tau zoo rau kev siv cov qauv siv vuam.Phosphorus thiab sulfur yog tswj nyob rau theem qis los pab tswj lub zuag qhia tag nrho toughness thiab workability ntawm cov khoom.Txawm hais tias qhov tseem ceeb tshwj xeeb rau silicon thiab manganese tsis tau muab, lawv tuaj yeem hloov kho nyob rau hauv cov kev txwv tso cai los ua kom zoo dua cov khoom ntawm cov hlau ntxiv.
Tensile Strength thiab Yield Point lossis Pov Thawj Stress
Lub zog tensile ntawm lub weld yog siv rau tsis siv neeg arc welded hlab.Nws yog SAW vuam txheej txheem.
| Lub cim ntawm qib | Tensile zog | Yield point los yog pov thawj kev nyuaj siab | Tensile zog hauv weld |
| N / mm² (MPA) | N / mm² (MPA) | N / mm² (MPA) | |
| min | min | min | |
| TSI 400 | 400 | 235 | 400 |
Elongation ntawm JIS G 3444
Lub elongation sib raug rau txoj kev tsim cov raj yog qhia hauv Table 4.
Txawm li cas los xij, thaum qhov ntsuas tensile tau ua tiav ntawm Test Piece No. 12 lossis Test Piece No.5 coj los ntawm lub raj hauv qab 8 hli hauv phab ntsa tuab, qhov elongation yuav tsum ua raws li Table 5.
Nyob rau hauv chav tsev kub (5 ° C mus rau 35 ° C), tso cov qauv ntawm ob daim hlau tiaj tus thiab nias kom ruaj khov rau lawv kom txog thaum qhov kev ncua deb H ≤ 2/3D ntawm daim hlau, tom qab ntawd xyuas cov kab nrib pleb.
Nyob rau hauv chav tsev kub (5 ° C mus rau 35 ° C), khoov cov qauv nyob ib ncig ntawm lub tog raj kheej ntawm qhov tsawg kawg nkaus khoov lub kaum sab xis ntawm 90 ° thiab qhov siab tshaj plaws nyob rau hauv lub vojvoog tsis ntau tshaj 6D thiab xyuas cov qauv rau cov kab nrib pleb.
Kev ntsuam xyuas hydrostatic, kev ntsuam xyuas tsis muaj kev puas tsuaj ntawm welds, lossis lwm yam kev sim yuav tsum tau pom zoo ua ntej ntawm cov kev xav tau.
Sab nraud txoj kab uas hla
Phab ntsa Thickness kam rau ua
Ntev Tolerance
Length ≥ teev ntev
Sab hauv thiab sab nrauv ntawm cov yeeb nkab steel yuav tsum du thiab tsis muaj qhov tsis zoo rau ues.
Txhua cov yeeb nkab steel yuav tsum tau sau nrog cov ntaub ntawv hauv qab no.
a)Lub cim ntawm qib.
b)Lub cim rau kev tsim khoom.
c)Qhov ntev.Sab nraud txoj kab uas hla thiab phab ntsa thickness yuav tsum raug cim.
d)Tus neeg tsim khoom lub npe lossis cov ntawv luv.
Thaum kos npe rau ntawm lub raj yog qhov nyuaj vim tias nws sab nraud txoj kab uas hla me me los yog thaum thov los ntawm tus neeg yuav khoom, cov cim yuav raug muab rau ntawm txhua pob ntawm cov raj los ntawm txoj kev tsim nyog.
Anti-corrosion txheej xws li zinc-nplua nuj txheej, epoxy txheej, xim txheej, thiab lwm yam tuaj yeem siv rau sab nrauv lossis sab hauv.
STK 400 muaj qhov sib npaug zoo ntawm lub zog thiab kev lag luam, ua rau nws zoo tagnrho rau ntau yam engineering thiab kev tsim kho.
STK 400 steel raj feem ntau yog siv rau hauv kev tsim kho kev lag luam thiab tshwj xeeb tshaj yog siv los ua cov khoom siv xws li kab, kab teeb, lossis thav duab hauv kev lag luam thiab cov tsev nyob.
Nws kuj tseem tsim nyog rau kev txuas hniav, kev txhawb nqa cov qauv, thiab lwm yam dej num uas xav tau lub zog nruab nrab thiab kav ntev.
Nws kuj tseem siv tau los tsim cov kev tiv thaiv txoj kev tsheb, tsheb ciav hlau kos npe, thiab lwm qhov chaw pej xeem.
Hauv kev tsim khoom, STK 400 tuaj yeem siv los tsim cov thav duab thiab kev txhawb nqa rau cov tshuab thiab cov cuab yeej siv vim nws muaj peev xwm thauj khoom zoo thiab ua haujlwm tau zoo.
Thov nco ntsoov tias thaum cov qauv no zoo sib xws hauv kev thov thiab kev ua tau zoo, tej zaum yuav muaj qhov sib txawv me me ntawm cov tshuaj muaj pes tsawg leeg thiab qee yam khoom siv tsis zoo.
Thaum hloov cov ntaub ntawv, cov kev cai tshwj xeeb ntawm cov qauv yuav tsum tau muab piv rau hauv kev nthuav dav kom ntseeg tau tias cov ntaub ntawv uas tau xaiv yuav ua tau raws li cov qauv kev qhia tshwj xeeb thiab kev nyab xeeb ntawm qhov project.
Txij li thaum nws tsim nyob rau hauv 2014, Botop Steel tau dhau los ua tus xa khoom ntawm carbon steel yeeb nkab nyob rau sab qaum teb Tuam Tshoj, paub txog kev pabcuam zoo, cov khoom zoo, thiab cov kev daws teeb meem.
Lub tuam txhab muaj ntau yam carbon steel kav thiab lwm yam khoom, xws li seamless, ERW, LSAW, thiab SSAW steel yeeb nkab, raws li zoo raws li ib tug tag nrho lineup ntawm cov yeeb nkab fittings thiab flanges.
Nws cov khoom tshwj xeeb kuj suav nrog cov qib high-qib alloys thiab austenitic stainless hlau, tsim kom tau raws li qhov xav tau ntawm ntau yam kev siv kav dej.
