Vim li cas lub zog tawm ntawm DC06 cim "100-180MPa"?
Teb: Nws txawv me ntsis nyob ntawm qhov tuab. Thaum cov khoom tsis muaj qhov pom tseeb tawm los, Rp0.2 (tshwj xeeb tsis yog - qhov sib npaug elongation lub zog) yog siv; Thaum muaj qhov pom tseeb tawm los taw tes, Rel (yield zog) yog siv. Tag nrho ntau yam yog 100-180MPa, kom ntseeg tau qhov sib npaug ntawm lub zog qis thiab cov yas siab.
Vim li cas qhov elongation tom qab tawg tuaj nrog nce thickness?
Teb: Tus qauv elongation rau DC06 (L0=80mm, b=20mm) yog: thickness<0.7mm ≥39%, 0.7-1.0mm ≥40%, 1.0-1.6mm ≥41%, ≥1.6mm ≥42%. Thicker plates have more uniform grains and better deformation coordination during rolling, hence the slightly higher elongation.
Dab tsi yog qhov tseem ceeb ntawm cov yas strain ratio r tus nqi? A: r=Muaj tseeb strain nyob rau hauv lub thickness kev taw qhia / Muaj tseeb strain nyob rau hauv lub dav kev taw qhia. Tus nqi siab dua r qhia tau hais tias muaj zog tiv thaiv kom txo cov thickness ntawm cov ntaub ntawv, ua rau nws tsis tshua muaj kev cuam tshuam hauv zos thinning thiab tawg thaum sib sib zog nqus nqus. Rau DC06, r Ntau dua lossis sib npaug rau 2.0 (xws li r=(r90 + 2r45 + r0) / 4), qhia tias qis anisotropy.
Dab tsi yog qhov yuav tsum tau ua ntawm DC06?
A: Qhov zoo tshaj plaws grain loj yog 7.0-8.5. Grain uniformity yog ib qho tseem ceeb heev- qhov loj me me (piv txwv li, finer ntawm qhov pib / kawg) ua rau anisotropy hauv cov khoom siv kho tshuab, ua rau muaj kev pheej hmoo ntawm cov kab nrib pleb sib sib zog nqus. Qhov no yuav tsum tau ua kom zoo dua los ntawm qhov kub - dov "U"-zoo li tus txheej txheem txias.
Yuav ua li cas kuaj seb qhov kev sib sib zog nqus nqus ntawm DC06 puas tsim nyog? A: Cov khoom kuaj tseem ceeb: ① Tensile xeem ( ntsuas elongation ntawm Rp0.2, Rm, thiab A80); ② r / n tus nqi ntsuas (peb cov lus qhia: 0 degree, 45 degree, thiab 90 degree); ③ Metallographic tsom xam (grain loj uniformity); ④ Kev tshuaj xyuas qhov zoo ntawm qhov chaw (tsis muaj qhov cuam tshuam rau kev sib sau).