Tsawg carbon steel yeeb nkab, tseem hu ua me me steel yeeb nkab, yog cov khoom siv dav tshaj plaws hauv kev lag luam. Nws yog tsim los ntawm cov hlau nrog cov ntsiab lus ntawm cov pa roj carbon tsawg txaus kom cov khoom siv ductile thiab yooj yim weldable, uas ua rau nws lub neej ntawd kev xaiv rau cov dej, tsis tshua muaj - cov pa roj faib, cov txheej txheem framing, laj kab, piling thiab kev siv tshuab ua haujlwm. Qhia nws kom raug txhais tau tias paub qhov twg cov pa roj carbon txwv nyob thiab cov khoom specification twg tswj lub luag haujlwm npaj.
Dab tsi txhais tau tias Tsawg Carbon Steel Pipe
Cov ntsiab lus carbon yog qhov sib faib ntawm peb tsev neeg ntawm carbon steel. Cov pa roj carbon tsawg muaj txog li 0.25% carbon los ntawm qhov hnyav, nruab nrab carbon steel yog kwv yees li ntawm 0.25% thiab 0.60%, thiab cov pa roj carbon siab siab saum daim duab. Cov txiaj ntsig engineering ntawm cov ntsiab lus qis qis yog cov khoom muag, cov khoom siv thiab cov khoom siv tawv nrog cov khoom siv zoo, zoo heev weldability yam tsis muaj preheat nyob rau hauv ib txwm thicknesses, thiab tsuas yog nruab nrab lub zog uas tsis tuaj yeem nce mus rau ib qho txiaj ntsig zoo los ntawm kev kho cua sov.
Formability zoo heev, yog li cov yeeb nkab tuaj yeem khoov, nthuav dav thiab swaged.
Weldable nrog zoo tib yam consumables thiab tsis muaj kev ceev faj tshwj xeeb nyob rau hauv nyias thiab nruab nrab phab ntsa thickness.
Zoo toughness, tsis muaj kev pheej hmoo ntawm tus cwj pwm brittle pom nyob rau hauv high carbon qib.
Txo lub zog thiab hardness dua li nruab nrab lossis siab carbon steel, yog li cov kev txwv siab thiab kub yog qhov me me.
Qib, Cov ntsiab lus carbon thiab yam tsawg kawg nkaus
| Qib | Specification | Cov pa roj carbon max | Tawm min, MPa | Tensile min, MPa | Hom dej num |
|---|---|---|---|---|---|
| A106 Qib A | ASTM A106 1 | 0.25 | 205 | 330 | Seamless yeeb nkab rau siab -kev pab kub |
| A106 Qib B | ASTM A106 1 | 0.30 | 240 | 415 | Seamless yeeb nkab rau siab thiab kub kev pab cuam |
| A106 Qib C | ASTM A106 1 | 0.35 | 275 | 485 | Siab dua -lub zog seamless siab yeeb nkab |
| A53 Qib B | ASTM A53 | 0.30 | 240 | 415 | Seamless thiab welded yeeb nkab rau kev pabcuam |
| A179 thiab A192 | ASTM A179, ASTM A192 | Tsawg carbon, tua hlau | Raws li specification | Raws li specification | Thaum tshav kub kub exchanger thiab boiler raj |
| Qib B | API 5L | 0.28 | 245 | 415 | Kab yeeb nkab rau roj thiab roj sib sau ua ke |
| X42 | API 5L | Rau qib | 290 | 415 | Tsawg- zog kab yeeb nkab rau kev sib kis |
| P235GH | TS EN 10216-1 | Rau qib | 235 | 360 | Kev pabcuam European siab ntawm qhov kub siab |
| Q235B | GB/T 3091, GB/T 8163 | 0.20 | 235 | 370 | Kev thauj dej, roj thiab dej dav dav |
| SGP | JIS G3452 | Tsawg carbon | Raws li specification | Raws li specification | Cov kav dej zoo tib yam rau qis - kev pabcuam siab |
Cov ntsiab lus ntawm cov pa roj carbon monoxide thiab cov kev xav tau ntawm txhua yam yuav tsum tau muab los ntawm cov ntawv luam ntawm tus qauv uas muaj npe nyob rau hauv daim ntawv xaj yuav khoom, vim cov kev txwv txawv ntawm cov khoom thiab cov qib.
Mechanical Behavior thiab Weldability
A106 Qib B thiab A53 Qib B sib koom tib yam tsawg kawg nkaus ntawm 240 MPa yield zog thiab 415 MPa tensile lub zog, uas yog vim li cas lawv feem ntau raug kho raws li kev hloov pauv rau qis - kev ua haujlwm siab txawm tias lawv txoj kev tsim khoom thiab kev soj ntsuam yuav txawv. Weldability yog tswj los ntawm cov pa sib npaug, xam raws li cov pa roj carbon ntxiv rau manganese muab faib los ntawm 6 ntxiv rau qhov seem alloying ntsiab faib los ntawm tsib thiab kaum tsib feem. Cov pa roj carbon sib npaug ntawm li 0.43% lossis qis dua yog ib txwm teev rau cov qib no, uas tso cai rau vuam yam tsis muaj preheat nyob rau hauv cov tuab feem ntau siv.
Vuam thiab Fabrication xyaum
Siv cov khoom sib txuam carbon steel muab tub lim hlau xws li ER70S-6 kev faib tawm rau cov pa roj hlau arc vuam, raws li qhov muaj feem xyuam rau AWS A5 muab tub lim hlau specification.
Preheat tsis yog ib txwm xav tau hauv qab li 0.25% carbon, tab sis pom zoo rau cov phab ntsa hnyav, cov pob qij txha ruaj khov thiab txias ambient tej yam kev mob.
Tswj cov cua sov tso rau ntawm cov yeeb nkab phab ntsa nyias kom tsis txhob hlawv - los ntawm kev sib hloov ntau dhau.
Kub-dip galvanize tom qab vuam ntau dua li ua ntej, vim tias txheej txheej puas los ntawm vuam tsis tuaj yeem rov qab los rau qhov zoo qub.
Saib xyuas qhov tsawg kawg nkaus bending radii kom tsis txhob ovality thiab wrinkling thaum txias khoov.
Cov ntawv thov raug thiab xaiv txwv
Tsawg carbon steel yeeb nkab yog cov khoom siv rau kev siv tau thiab cov txheej txheem dej, tsis tshua muaj - cov pa xa hluav taws xob, cov cua compressed, cov qauv tsim, cov tes tuav thiab cov guardrails, fencing, piling, kua dej thiab engineering fabrication. Nws tsis yog qhov kev xaiv zoo rau siab - kub lossis siab - lub luag haujlwm siab, qhov uas yuav tsum tau muaj lub siab seamless xws li ASTM A106, tsis yog rau cov kev pabcuam cryogenic, qhov twg qis - qib ntsuas kub rau kev cuam tshuam toughness yuav tsum tau siv.
FAQ
Q: Cov ntsiab lus carbon dab tsi ua rau cov yeeb nkab steel qis carbon?
Cov yeeb nkab tau muab faib ua cov pa roj carbon tsawg thaum cov hlau muaj kwv yees li 0.25% carbon lossis tsawg dua los ntawm qhov hnyav; cov yeeb nkab uas qhia tshwj xeeb teeb tsa lawv lub qab nthab, feem ntau ntawm 0.20% thiab 0.30%.
Q: Puas yog 304 stainless hlau yog cov pa roj carbon tsawg?
No. Hom 304 yog austenitic stainless hlau, tsis yog carbon hlau, txawm hais tias cov pa roj carbon tsawg 304L caps carbon ntawm 0.030% lossis 0.035% nyob ntawm cov khoom specification.
Q: Puas yog C45 yog cov pa roj carbon tsawg?
No. C45 yog ib tug nruab nrab carbon steel nrog roughly 0.45% carbon, uas muab nws siab zog thiab hardness tshaj cov uas tsis muaj carbon steel tab sis txo ductility thiab ua welding ntau xav tau.
Q: Puas yog EN8 yog cov pa roj carbon tsawg?
No. EN8 sib raug rau 080M40 nruab nrab cov pa roj carbon qib nrog kwv yees li 0.40% carbon thiab yog siv rau cov khoom nyuab siab xws li shafts, axles thiab cov yuam sij.
Q: Puas yog qis carbon steel yeeb nkab zoo ib yam li txhuas yeeb nkab?
Tsis yog. Aluminium yeeb nkab yog ib yam khoom uas tsis yog -ferrous khoom nrog kwv yees li ib feem peb ntawm qhov ntom ntawm cov hlau thiab txawv zog thiab thermal cwj pwm, thiab nws tau teev nyob rau hauv cov qauv sib cais xws li ASTM B241.
Q: Puas yog cov pa roj carbon tsawg yuav tsum tau preheating ua ntej vuam?
Nyob rau hauv ib txwm phab ntsa thickness thiab nruab nrab ambient kub nws tsis; Cov ntu hnyav, cov pob qij txha ruaj khov thiab cov huab cua txias ua rau muaj kev sib haum xeeb ua ntej kom tsis txhob tawg thiab cov cheeb tsam nyuaj.
