** 1. Cov hlau tsis tuaj yeem yog tawv? **
Cov hlau uas tsis tuaj yeem ua haujlwm nyuaj los ntawm kev kho cua sov (nyiam quenching thiab tempering) yog ** {{{{{0} cov hlau me me **. Cov no feem ntau muaj cov ntsiab lus carbon qab 0.3%. Lawv cov ntsiab lus muaj peev xwm tsawg txhais tau tias lawv tsis tuaj yeem tsim qhov nyuaj, brittle martensite qauv tsim nyog rau kev ua kom tawv tawv.
** 2. Dab tsi yog lwm lub npe rau en8? **
Lwm lub npe uas muaj en8 yog ** 080m40 **. Lub npe no yog ua raws nws cov tshuaj lom neeg muaj pes tsawg leeg, qhia tias nws muaj cov ntsiab lus tshiab cov ntsiab lus ntawm 0.40%.
** 3. Uas yog nyuaj, en8 lossis en24? **
** EN24 yog qhov nyuaj dua li en8 ** tom qab kev kho cua sov. EN24 yog qhov nruab nrab-} carbon, tsawg} - allloy steel (feem ntau hu ua "lub zog muaj zog thiab qib nyuaj. En8 yog qhov nruab nrab-} cov hlau steel uas tuaj yeem ua kom tawv, tab sis nws qhov siab tshaj plaws hardness tau ntau dua li ntawm EN24.
** 4. Yuav ua li cas Weld En8 Steel? **
En8 tuaj yeem welded, tab sis nws yuav tsum tau saib xyuas. Preheating cov hlau mus rau ib puag ncig 200 - 300℃yog feem ntau tsim nyog los tiv thaiv kev tawg vim nws cov ntsiab lus carbon. Tom qab vuam, nws yuav tsum tau tso cai kom txias qeeb heev, feem ntau los ntawm faus nws hauv cov khoom insulating. Rau cov ntawv thov tseem ceeb, kev kho mob tom qab Weld (kev ntxhov siab kev ntxhov siab) raug pom zoo heev.
** 5. Yog en8 sib nqus? **
Yog, ** En8 yog sib nqus **. Raws li cov hlau ferritic (ib tus hlau - Raws li alloy), nws yog qhov muaj zog ferrigagnetic ntawm chav tsev kub.
