Dab tsi yog Chemical Composition ntawm lawv?
Chemical Composition (wt.% feem ntau)
| Lub ntsiab | SA283 Qib A | SA283 Qib B |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug li 0.25 | Tsawg dua lossis sib npaug li 0.28 |
| Manganese (Mn) | 0.70–1.20 | 0.80–1.25 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.035 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.040 | Tsawg dua lossis sib npaug li 0.040 |
| Silicon (Si) | Tsawg dua los yog sib npaug li 0.15 | Tsawg dua los yog sib npaug li 0.15 |
| Copper (Cu) | Yeem, Tsawg dua lossis sib npaug rau 0.20 | Yeem, Tsawg dua lossis sib npaug rau 0.20 |
Kev soj ntsuam:Qib B muaj cov pa roj carbon ntau dua me ntsis thiab manganese, muab nws lub zog ntau dua piv nrog Qib A.
Dab tsi yog Mechanical Properties ntawm lawv?
Mechanical Properties
| Khoom | SA283 Qib A | SA283 Qib B |
|---|---|---|
| Yam tsawg kawg Yield Strength | 30-33 ksi (≈ 205-230 MPa) | 33-36 ksi (≈ 230-250 MPa) |
| Tensile zog | 55-70 ksi (≈ 380-480 MPa) | 60-75 ksi (≈ 415-515 MPa) |
| Elongation | Ntau dua lossis sib npaug li 20% | Ntau dua lossis sib npaug li 18% |
| Hardness | 120-150 HB | 130–160 HB |
| Weldability | Zoo | Zoo |
Kev soj ntsuam:Qib B muab lub zog ntau dua tab sis txo qis qis dua piv nrog Qib A.
Qhov txawv ntawm lawv yog dab tsi?
Qhov sib txawv tseem ceeb ntawm SA283 Qib A thiab SA283 Qib B yog nyob rau hauvlub zog, tshuaj muaj pes tsawg leeg, thiab kev siv:
Yield thiab tensile zog
Qib A: Yam tsawg kawg nkaus tawm lub zog ~ 30-33 ksi (205-230 MPa), tensile zog 55-70 ksi (380-480 MPa)
Qib B: siab dua yield zog ~ 33-36 ksi (230-250 MPa), tensile zog 60-75 ksi (415-515 MPa)
Tshuaj muaj pes tsawg leeg
Qib B muaj cov pa roj carbon ntau dua me ntsis (tsawg dua lossis sib npaug li 0.28% vs Tsawg dua lossis sib npaug li 0.25%) thiab manganese (0.80-1.25% vs 0.70-1.20%) dua qib A, uas ua kom muaj zog.
Ductility
Qib A feem ntau muaj me ntsis elongation siab dua (Ntau dua lossis sib npaug li 20%) piv nrog Qib B (Ntau dua lossis sib npaug li 18%).
Daim ntawv thov
Qib A: lub teeb- mus rau nruab nrab- thauj cov qauv phaj, qis- lub tank siab, kev tsim dav dav
Qib B: nruab nrab- cov qauv thauj khoom, nruab nrab- cov hlab ntsha siab, cov khoom siv uas yuav tsum tau muaj zog dua - rau - qhov hnyav piv.
Qib B muajsiab dua yield thiab tensile zog, me ntsis qis elongation, thiab me ntsis siab dua hardness.
Ob qib muabzoo weldabilitythiab tsim nyog rau cov qauv, tank, thiab kev siv tshuab.
Kev xaiv nyob ntawmload xav tau, thickness, thiab tsim kev txiav txim siab.
Ntawm GNEE, peb muab cov khoom zoo - cov khoom siv hlau zoo, tsim kom tau raws li koj qhov kev tsim kho tshwj xeeb. Nrog rau cov nqi sib tw, kev pabcuam txhim khu kev qha, thiab xa khoom raws sijhawm, peb muaj kev ntseeg siab hauv kev muab cov kev daws teeb meem uas yuav txhim kho koj cov haujlwm. Peb caw koj los koom tes nrog peb rau tag nrho koj cov kev xav tau steel!
