ASTM A 334 3Qib 1yog seamless thiab welded carbon steel yeeb nkab rau qhov kev pab cuam uas tsis tshua muaj kub.
Nws muaj cov ntsiab lus siab tshaj plaws ntawm 0.30%, manganese cov ntsiab lus ntawm 0.40-1.60%, lub zog tensile yam tsawg kawg nkaus ntawm 380Mpa (55ksi), thiab yield zog ntawm 205Mpa (30ksi).
Nws yog tsuas yog siv rau kev thauj mus los ntawm cov dej hauv qhov chaw uas tsis muaj qhov kub thiab txias, cov khoom siv tub yees, thiab lwm yam kev lag luam uas yuav tsum tau muaj qhov kub thiab txias tsis kam.
ASTM A334 muaj ntau qib los cuam tshuam nrog qhov sib txawv ntawm qhov kub thiab txias, xws li:Qib 1, Qib 3, Qib 6, Qib 7, Qib 8, Qib 9, thiab Qib 11.
Muaj ob hom hlau, carbon steel thiab hlau alloy.
Qib 1thiabQib 6yog ob qho tib si carbon steels.
Lawv tuaj yeem tsim los ntawmseamless los yog welded txheej txheem.
Hauv kev tsim cov seamless steel raj, muaj ob txoj kev tsim khoom,Kub-tiav lossis Cold-drawn.
Kev xaiv yog nyob ntawm qhov kawg ntawm kev siv cov yeeb nkab, qhov loj ntawm cov yeeb nkab, thiab cov kev cai tshwj xeeb rau cov khoom siv.
Hauv qab no yog ib daim duab ntawm cov txheej txheem kub-tiav seamless ntau lawm.
Covkub tiavseamless yeeb nkab txheej txheem yuav tsum tau cua sov steel billet mus rau ib tug high kub thiab ces tsim cov yeeb nkab los ntawm dov los yog extruding.Cov txheej txheem no yuav siv qhov chaw ntawm qhov kub thiab txias thiab pab txhim kho microstructure ntawm cov khoom, yog li ua rau nws tag nrho toughness thiab uniformity.
Cov txheej txheem kub tiav yog tshwj xeeb tshaj yog haum rau kev tsim cov kab loj loj thiab cov phab ntsa tuab, feem ntau siv hauv cov kav xa dej loj thiab kev siv cov qauv, thiab tsim nyog rau cov khoom ntim siab vim nws tus nqi qis.
Txias-txiasseamless steel raj yog ua tiav los ntawm kev ncab tom qab cov khoom tau txias tag kom ua tiav qhov loj me thiab cov duab xav tau.Txoj kev no txhim kho qhov tseeb qhov tseeb thiab qhov chaw tiav ntawm cov khoom, thaum lub caij txias ua hauj lwm-hardening nyhuv kuj txhim kho cov khoom siv ntawm lub raj, xws li lub zog thiab hnav tsis kam.
Cov txheej txheem kev kos duab txias yog tshwj xeeb zoo rau kev tsim cov raj nrog me me diameters thiab nyias phab ntsa thicknesses qhov siab precision thiab zoo heev saum npoo yuav tsum tau thiab yog dav siv nyob rau hauv cov cheeb tsam xws li hydraulic systems, automotive Cheebtsam, thiab high-pressure khoom kom tau raws li. cov kev xav tau kev ua haujlwm siab, txawm tias tus nqi siab dua.
Ua kom zoo los ntawm cua sov kom tsis txhob tsawg dua 1550 ° F [845 ° C] thiab txias hauv huab cua los yog hauv chav txias ntawm lub qhov cub cua sov.
Yog xav tau tempering, nws yuav tsum tau sib tham.
Rau cov qib saum toj no ntawm seamless steel raj nkaus xwb:
Rov ua kom sov thiab tswj kev ua haujlwm kub thiab qhov kub ntawm qhov kub ntawm qhov ua tiav kom tiav qhov kub ntawm 1550 - 1750 ° F [845 - 955 ℃] thiab txias hauv qhov cua sov cua sov los ntawm qhov pib kub tsis pub tsawg dua 1550 ° F [ 845 °C].
Qib 1 chemistry yog tsim los sib npaug ntawm lub zog, hardness, thiab tsis tshua muaj kub toughness rau kev siv nyob rau hauv ib puag ncig uas tsis kub.
| Qib | C(Carbon) | Mn(Manganese) | P(Phosphorus) | S(Sulfur) |
| Qib 1 | max 0.30% | 0.40-1.06% | max 0.025% | max 0.025% |
| Rau txhua qhov txo qis ntawm 0.01% carbon qis dua 0.30%, qhov nce ntawm 0.05% manganese saum 1.06% yuav tso cai rau qhov siab tshaj ntawm 1.35% manganese. | ||||
Cov pa roj carbon monoxide yog lub hauv paus tseem ceeb uas ua rau kom muaj zog thiab hardness ntawm cov hlau, tab sis nyob rau hauv cov ntaub ntawv uas tsis tshua muaj kub, cov ntsiab lus carbon siab yuav txo cov toughness ntawm cov khoom.
Qib 1, nrog cov ntsiab lus siab tshaj plaws ntawm 0.30%, yog cais raws li cov pa roj carbon tsawg thiab tau tswj hwm ntawm qib qis kom ua kom zoo dua nws qhov kub thiab txias.
Muab xam qhov tsawg kawg nkaus elongation qhov tseem ceeb rau txhua 1/32 hauv.[0.80 mm] txo cov phab ntsa thickness.
Kev sim cuam tshuam rau qib 1 steel tubing yog uantawm -45 ° C [-50 ° F], uas yog tsim los xyuas qhov toughness thiab cuam tshuam tsis kam ntawm cov khoom nyob rau hauv ib puag ncig uas tsis tshua muaj kub.Kev ntsuam xyuas yog ua los ntawm kev xaiv qhov tsim nyog cuam tshuam lub zog raws li phab ntsa thickness ntawm cov yeeb nkab steel.
Notched-bar cuam tshuam cov qauv yuav tsum yog ntawm cov nqaj yooj yim, Charpy-type, raws li Kev Ntsuas E23.Hom A, nrog rau V thais.
Ob txoj hauv kev ntawm kev ntsuas hardness yog Rockwell thiab Brinell hardness tests.
| Qib | Rockwell | Brinell |
| ASTM A334 Qib 1 | B 85 | 163 |
Txhua cov yeeb nkab yuav tsum tsis raug kuaj xyuas hluav taws xob lossis hydrostatically raws li STM A1016/A1016M.Tshwj tsis yog txwv tsis pub teev nyob rau hauv daim ntawv yuav khoom, hom kev sim siv yuav tsum nyob ntawm qhov chaw tsim khoom xaiv.
Ntxiv nrog rau cov cim qhia hauv Specification A1016/A1016M, cov cim yuav tsum suav nrog kub tiav, txias kos, seamless, lossis welded, thiab cov ntawv "LT" ua raws li qhov ntsuas kub ntawm qhov ntsuas qhov cuam tshuam.
Thaum cov yeeb nkab ua tiav tsis muaj qhov loj txaus kom tau txais cov qauv me me, cov cim yuav tsum tsis suav nrog cov ntawv LT thiab qhov ntsuas kub ntsuas.
Dav siv nyob rau hauv ntau yam kev lag luam daim ntawv thov uas yuav tsum tau ua haujlwm qis.
Kev thauj mus los ntawm Cryogenic kua: Qib 1 steel yeeb nkab yog dav siv los thauj cov kua dej cryogenic xws li liquefied natural gas (LNG), liquefied petroleum gas (LPG), thiab lwm yam tshuaj cryogenic.Cov kua dej no feem ntau yuav tsum tau thauj mus los nyab xeeb ntawm qhov kub thiab txias hauv ib puag ncig, thiab Qib 1 steel yeeb nkab tswj nws lub cev thiab cov qauv kev ntseeg siab ntawm qhov kub qis no.
Tub yees tshuab thiab khoom siv: Feem ntau siv rau kev xa cov kav dej txias hauv cov tshuab no.
Thaum tshav kub kub exchangers thiab condenser: Thaum tshav kub kub exchangers thiab condensers yog cov khoom tseem ceeb hauv kev lag luam thiab lub zog, feem ntau siv qib 1 steel tubing ua cov khoom siv hauv tsev.Cov khoom siv no xav tau cov ntaub ntawv uas muaj lub zog siab thiab corrosion kuj ntawm qhov kub thiab txias kom ntseeg tau tias kev ua haujlwm ntev thiab kev ua haujlwm zoo.
Cov chaw khaws cia txias thiab cov tub yees txias: Hauv qhov chaw txias txias thiab lwm qhov chaw tub yees, cov kav dej yuav tsum tau hloov mus rau qhov kub tsis tshua muaj siab.Qib 1 steel yeeb nkab tuaj yeem siv los tsim cov kav dej hauv cov chaw no vim tias nws muaj peev xwm ua haujlwm txuas ntxiv hauv qhov chaw txias txias yam tsis ua haujlwm.
1. EN 10216-4: P215NL, P255QL;
2. DIN 17173:TTSt35N;
3. JIS G3460:STPL 380;
4. GB/T 18984: 09Mn2V.
Cov qauv thiab qib no yog tsim los kom muaj cov khoom zoo sib xws lossis sib npaug rau ASTM A334 Qib 1, suav nrog cov khoom ntsuas kub thiab lwm yam kev ua tau zoo.
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.
