Lub zog lub cev ntawm cov hlau ntshiab: tawm lub zog (ys) thiab kawg tensile lub zog (UTS)
Cov txiaj ntsig lub zog (ys) thiab kawg tensile muaj zog (UTS) ntawm cov khoom ntshiab yog cov khoom siv ntshiab los ntawm kev coj dawb huv, kev ua yeeb yam, thiab kev kho cua sov. Hauv qab no yog qhov tseem ceeb thiab qhov tseem ceeb cuam tshuam rau cov khoom no:
Raug ys thiab uts ranges rau cov hlau ntshiab (Fe ntau dua lossis sib npaug nrog 99.8%)
| Ntiag tug | Qho deb | Kuaj Tus Qauv | Kev piav txog |
|---|---|---|---|
| Yield zog (ys) | 120-180 MPa | ASTM E8 / E8M | Kev ntxhov siab thaum pib sib txawv |
| Qhov kawg tensile lub zog (UTS) | 220-280 MPa | Iso 6892-1 | Siab tshaj plaws kev ntxhov siab ua ntej bacture |
| Elongation | 30–50% | ASTM A370 | Kev Ntsuas Ductility |
Qhov tseem ceeb cuam tshuam YS thiab UTS
Purity qib
Muaj cov hlau ntshiab (FE 99.8%): YS ≈ 120-150 MPa, UTS ≈ 220-250 MPa.
High-huv cov hlau (FE 99.95% +): YS yuav txo qis mus rau 80-120 mpa, UTS 180-220 MPa (cov nplej uas muaj zog ntxiv dag zog rau kev siv zog me me).
Txoj kev ua
Cuav Dab: Increases strength via work hardening (YS >200 MPa, uts txog 300 MPa) tab sis txo cov ductuckas (elongation<20%).
Ib tug anerting: Restores ductility (elongation >40%) Tab sis lub zog qis rau lub hauv paus qib.
Qoob ntais loj
Cov Khoom Ua Kom Zoo Dua Ntxiv Ntxiv: Cov nplej me me (piv txwv li, los ntawm 100 μm txog 10 μm) Txhim kho Y
Kev Kho Cua Sov
Li no: Homogenizes microstructure rau kev ntsuas lub zog thiab tawv.
Quenching & Tempering: Tsis tshua muaj siv rau cov hlau ntshiab (tsis muaj theem kev hloov pauv) tab sis siv tau rau cov hom sib txawv tsawg-alloy.
Cov ntawv thov thiab kev ua tau zoo xav tau
Electromagnetic cuab yeej siv hluav taws xob (hloov pauv, cov cores muaj zog)
Yuav tsum muaj: bes ys (yooj yim machining), siab sib nqus permeability.
Kev Xaiv Cov Khoom: Kev pham-huv Annealed Hlau (YS ≈≈ 80-120 MPa, UTS ≈ 180-220 MPA).
Cov txheej txheem txheej txheem (nkhaus, fasteners)
Yuav tsum tau: muaj zog nruab nrab thiab ductility.
Cov khoom xaiv: Txias-dov hlau ntshiab (YS ≈ 180-220 MPA, uts ≈ 260-300 mpa).
Kuaj / High-Precision Soj
Yuav tsum muaj: ultra-qis impurities, cov yam ntxwv hnav ris tsho hnav tsoos.
Cov ntaub ntawv xaiv: Lub tshuab nqus tsev-melted high-huv hlau (FE 99.99% +, ys<100 MPa, UTS ≈ 150–180 MPa).
Piv nrog lwm cov ntaub ntawv
| Khoom | Ys (mpa) | UTS (MPA) | Cov Kev Siv Raug Raug |
|---|---|---|---|
| Cov Hlau Ntshiab (Annealed) | 120–150 | 220–250 | Electromagnetic Cheebtsam Electromic, Shielding |
| Tsawg-cov roj carbon hlau (A36) | 250 | 400–550 | Kev Tsim Kho, General Machinery |
| Ntshuam tooj liab (anealed) | 70 | 220 | Hluav Taws Xob Hluav Taws Xob |
Cov Ntawv Sau Cov Ntaub Ntawv Xaiv
Ua ntej muaj zog: Xaiv rau cov hlau txias-rolled hlau lossis cov hlau tsis muaj zog (piv txwv li, nrog MN / SiCH ntxiv).
Ua Ntej Sib Nqus Kev Tshaj Tawm: Siv high-dawb huv annealed hlau, xaiv hydrogen-annealed los txo cov roj carbon.
Tshuav Khoom Ntau: Thov tswj dov thiab txias rau cov nplej ua kom zoo dua qub kom muaj zog thiab muaj zog.