Yam tshuaj muaj pes tsawg leeg (mass feem)?
A: C Tsawg dua lossis sib npaug 0.15%, Mn Tsawg dua lossis sib npaug 0.60%, P Tsawg dua lossis sib npaug 0.100%, S Tsawg dua lossis sib npaug 0.025%; kev tswj sab hauv sib txawv ntawm cov hlau mills, thov xa mus rau daim ntawv pov thawj zoo.
Tej yam khoom siv hauv lub xeev annealed?
A: Yield zog Ntau dua los yog sib npaug ntawm 130 MPa, tensile lub zog 270-410 MPa, elongation tom qab tawg δ5 Ntau dua lossis sib npaug li 28%; cov ntsiab lus tshwj xeeb yog raug rau daim ntawv pov thawj zoo batch.
Hardness grading thiab ntau npaum li cas?
A: Annealed S: HV≈85–110; 1/8H: HV≈95–130; 1/4H: HV≈115–150; 1/2H: HV≈135–185; H: HV Ntau dua lossis sib npaug rau 170; Ua raws li cov qauv thiab steel zeb sab hauv tswj.
Vim li cas yield plateaus thiab yield elongations tshwm sim?
A: Tsawg- carbon steel feem ntau nthuav tawm lub tiaj tiaj tom qab annealing, uas tuaj yeem yooj yim ua rau Lüders bands thaum stamping. Qhov no tuaj yeem raug tshem tawm lossis txo qis los ntawm kev sib tw; lub xeev theem yog qhov zoo dua rau qhov sib sib zog nqus- kos.
Dab tsi yog qhov cuam tshuam ntawm qhov muaj zog yield zog piv rau stamping?
A: Qhov sib piv ntawm cov khoom muaj zog siab ua rau muaj kev pheej hmoo ntawm kev tawg thiab txo qhov kev txwv. Rau cov duab tsis yooj yim, cov khoom siv uas tsis tshua muaj lub zog sib piv thiab qhov siab elongation thiab r / n tus nqi yuav tsum raug xaiv, lossis hloov kho rau SPCD / SPCE.