Cov ntsiab lus ceev
TSI 45yog anon{0}} alloy zoo carbon steelcov ntaub ntawv qib siv rau seamless kav thiab raj, feem ntau txhais los ntawm covTIAB SA 1629tus qauv (uas tau raug superseded los ntawm cov EuropeanTS EN 10216-1txheem). Nws yog ib qho dav dav - lub hom phiaj steel siv rau qis - cov ntawv thov siab thiab yogtsis haum rau vuamnyob rau hauv feem ntau tus qauv.
1. Cov khoom txheem thiab qib sib npaug
ST45 yog qhov muaj npe nrov tshaj plaws nrog cov qauv qub GermanDIN 1629 Ntu 4. Cov niaj hnub European tus qauv uas hloov nws yogTS EN 10216-1, uas xaiv cov qib noP235TR 1.
Nov yog cov qhab nia sib npaug ntawm cov qauv sib txawv:
| Txuj | Qib sib npaug | Nco tseg |
|---|---|---|
| TIAB SA 1629 | TSI 45 | Tus thawj, tam sim no feem ntau keeb kwm npe. |
| TS EN 10216-1 | P235TR 1 | Cov niaj hnub European txheem hloov. |
| ASTM A53 | Qib A | Ib qho ze heev, feem ntau siv American sib npaug. |
| JIS G3454 | SIB 38 | Japanese sib npaug. |
| GB/T 8163 | 10 # (10 hlau) | Suav sib npaug. |
2. Tshuaj muaj pes tsawg leeg
ST45 yog ib qho qis - carbon steel. Nws cov khoom siv kho tshuab yog qhov tseem ceeb tshaj li nws cov tshuaj muaj pes tsawg leeg. Ib qho kev sib xyaw ua ke yog:
| Lub ntsiab | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.21 |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 0.70 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.040 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.040 |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.35 |
Key Takeaway:Cov ntsiab lus carbon tsawg ua rau nws yooj yim rau tshuab thiab tsim, tab sis nws kuj txhais tau tias nws muaj tsawg hardenability thiab yogtsis pom zoo rau weldinghauv kev siv siab. Yog tias qhov vuam tsim nyog kiag li, ua ntej- cua sov thiab tom qab- vuam cov cua sov yuav tsum tau kho, tab sis feem ntau nws yuav tsum zam.
3. Mechanical Properties
Lub npe "ST45" muab cov lus qhia rau nws cov khoom. Tus naj npawb "45" yog hais txog tusyam tsawg kawg nkaus tensile zoghauv kgf/mm².
| Khoom | Tus nqi |
|---|---|
| Tensile zog (Rm) | 440 - 540 MPa(≈ 45 - 55 kgf/mm²) |
| Yield zog (Rp0.2), min. | 255 MPa(min.) |
| Elongation (A), min. | ~ 25% (nws txawv nrog phab ntsa thickness) |
4. Cov yam ntxwv tseem ceeb thiab qhov zoo
Zoo machinability:Nws cov ntsiab lus carbon tsawg ua rau nws yooj yim rau kev txiav, laum, thiab tshuab.
Formability zoo:Nws tuaj yeem khoov thiab tsim yam tsis muaj cracking yooj yim.
Tus nqi -zoo:Raws li cov pa roj carbon steel yooj yim, nws yog ib qho ntawm cov kev xaiv pheej yig tshaj plaws rau cov ntawv tsis yog -tseem ceeb.
Weldability (nrog ceev faj):Txawm hais tias tsis pom zoo rau lub siab welds, nws tuaj yeem welded rau cov qauv lossis tsis yog - cov ntawv thov tseem ceeb nrog cov txheej txheem tsim nyog.
5. Kev txwv thiab qhov tsis zoo
Tsawg zog:Nws muaj zog txhua yam qis dua piv rau qib siab dua - qib carbon thiab alloy steels.
Tsis zoo Weldability rau siab:Nws yogtsis haum rau welded siab daim ntaub ntawvRaws li feem ntau thoob ntiaj teb lub siab lub nkoj thiab cov kav dej (xws li ASME B31.1 / B31.3). Lub tshav kub- cuam tshuam cheeb tsam (HAZ) ntawm ib lub vuam tuaj yeem ua rau tawg.
Tsawg kub brittleness:Nws dhau los ua nkig ntawm qhov kub thiab tsis haum rau qis - kev pabcuam kub.
Limited Corrosion Resistance:Zoo li txhua cov pa roj carbon steel, nws rusts yooj yim nyob rau hauv lub xub ntiag ntawm dej thiab oxygen thiab yuav tsum tau txheej los yog pleev xim rau kev tiv thaiv corrosion.
6. Kev siv ntau
Vim nws cov kev txwv nrog vuam thiab siab, ST45 / P235TR1 kav feem ntau yog siv rau:
Tsawg- kev thauj cov kua dej(xws li dej, cua, roj, roj).
Cov qauv sivthiab mechanical qhov chaw uas siab tsis yog qhov tseem ceeb.
Cov tes tsho bearingthiab bushings.
Tsheb thiab tsheb laij teb qhov chaw.
General engineering lub hom phiaj.
Lus Cim Tseem Ceeb ntawm Vuam
Qhov no yog qhov tseem ceeb tshaj plaws uas yuav tsum nco ntsoov: Thaum koj tuaj yeem pom ST45 yeeb nkab tau welded hauv kev cob qhia,Nws yog txwv tsis pub siv rau hauv welded siab tshuab raws li cov cai niaj hnub no.Yog hais tias ib qhov project yuav tsum tau welded carbon steel yeeb nkab rau kev pab cuam, ib tug zoo weldable qib zoo liASTM A106 Qib Blos yogAPI 5L Qib B(uas tau tswj cov ntsiab lus carbon thiab raug tua steels) yuav tsum tau teev tseg.
Xaus
Qib ST45 Carbon Steel Yeeb Nkabyog ib qho dav dav - lub hom phiaj, cov khoom siv nyiaj txiag tsim nyog rau kev siv qis - siab thiab cov qauv siv qhov chaw vuam tsis tas yuav tsum tau muaj kev tiv thaiv siab. Rau txhua daim ntawv thov tseem ceeb, tshwj xeeb tshaj yog hais txog lub siab lossis vuam, nws yog ib qho tseem ceeb uas yuav tsum sab laj txog qhov cuam tshuam, nce - mus rau - hnub tim engineering qauv (xws li EN 10216-1 lossis ASTM A53 / A106) thiab qhia qhov tsim nyog, qib vuam.
