1. ** Qhov uas muaj zog dua, kub lossis txias rolled steel? **
Txias rolled steel yog feem ntau muaj zog dua li kub dov steel. Tus txheej txheem txias dov nce ntxiv cov paib lub zog thiab tensile lub zog ntawm cov hlau thaum tseem txhim kho nws cov npoo tiav thiab qhov sib luag. Txawm li cas los xij, kub dov steel yog toderer thiab ntau ducast.
2. ** Dab tsi yog 1018 steel siv rau? **
1018 hlau, hlau tsawg-roj carbon, feem ntau siv rau qhov uas yuav tsum tau ua kom muaj kev tsim kho kom zoo thiab weldability tab sis tsis muaj zog. Cov ntawv thov raug suav nrog Shafts, pins, pas nrig, pas nrig, fixtures, cov khoom siv dav dav uas muaj zog tsis tseem ceeb.
3. ** Yog 4140 muaj zog dua 1018? **
Yog, 4140 hlau yog muaj zog dua 1018 steel. 4140 yog cov hlau roj carbon, chromal-molybdenum} Cov hlau uas tau zoo rau kev kho cua sov (quenching thiab tempering). Hauv nws lub xeev kho cua sov, 4140 tuaj yeem ua tiav lub zog tensile ntau zaus siab dua li qhov tsis muaj zog lossis txias-ua tiav 1018.
4. ** Yuav ua li cas qhia qhov sib txawv ntawm 1018 thiab 1045 steel? **
Visually, 1018 thiab 1045 hlau (ob qho tib si carbon hlau) yuav luag tsis yooj yim sua kom paub qhov txawv ntseeg. Cov hau kev tseeb tshaj plaws yog:
* ** Kev tsom xam tshuaj: ** Kev kuaj sim ntsuas (xws li spectrometry) los ntsuas cov ntsiab lus carbon) los ntsuas cov ntsiab lus carbon (1018: ~ 0.45% c).
* ** Kev sim ua kom sib txawv: ** Kev paub me me ntawm cov hlau thiab cov pa hluav taws xob tsis sib thooj (forking) ze rau ntawm lub txim taws piv rau 1018.
* ** Hardness Kuaj: ** 1045 feem ntau yuav nyuaj dua 1018 nyob rau tib yam mob (piv txwv li, ob qho tib si txias kos lossis anealed).
5. ** Dab tsi muaj zog dua, 4130 lossis 4140 hlau? **
4140 Hlau feem ntau muaj zog dua 4130 tus hlau thaum ob qho tib si yog cua sov-kho kom muaj kev nyuaj nyuaj. Qhov no yog vim 4140 muaj cov ntsiab lus muaj roj carbon ntau dua (~ 0.40% vs ~ 0.30% hauv 4130). Ob qho tib si yog chromium-molybdenum alloy hlau, tab sis cov pa roj carbon monined ntxiv nrog cov kev siv zog ua ke, thaum 4140 raug xaiv rau cov muaj zog dua.
