Qhia koj kom paub txog cov khoom siv qib ntawm cov bolts ib pliag

Bolt yog ib qho khoom siv kho tshuab uas siv ntau zaus, feem ntau siv rau ntau qhov chaw, nws yog los ntawm lub taub hau thiab ntsia hlau ob feem ntawm ib pawg ntawm cov khoom siv sib txuas, yuav tsum tau siv ua ke nrog lub txiv ntoo, feem ntau yog siv los txuas ob feem nrog cov qhov. Tej zaum koj tsis muaj kev nkag siab txog cov khoom siv qib ntawm bolt, tsab xov xwm no yuav qhia koj txog cov khoom siv bolt, qib kev paub txog, kom ntau tus neeg kawm paub txog cov yam ntxwv me me ntawm bolt.

Cov qib thiab cov ntaub ntawv ntawm cov bolts hais txog dab tsi?

Qib ntsia hlau txhais tau hais tias qib ntsia hlau yog 4.8 qib, 8.8 qib, 10.9 qib thiab lwm qib ntsia hlau.

Cov khoom siv yog hais txog lub bolt ua los ntawm cov khoom siv dab tsi, xws li Q235, 35K, 40Cr, 45 # hlau, 35CrMo hlau, 304 stainless hlau thiab 316 stainless hlau thiab lwm yam.

Qib ntawm cov ntsia hlau thiab cov khoom siv yog ib qho kev sib raug zoo, cov hlau tsis muaj zog tsuas yog tsim tau cov ntsia hlau qib qis, cov hlau carbon nruab nrab tuaj yeem tsim cov ntsia hlau qib nruab nrab, cov hlau carbon siab, thiab cov hlau alloy tuaj yeem tsim cov ntsia hlau qib siab. Qee qib ntawm cov ntsia hlau qhia txog cov tshuaj lom neeg sib xyaw thiab cov khoom siv kho tshuab, tab sis kuj txiav txim siab cov khoom siv.

Nov yog daim ntawv teev cov qib ntawm cov bolts uas siv tau. Qib 4.8 tuaj yeem yog Q235, Q195 thiab lwm yam hlau tsis muaj zog. Qib 5.8 Q235 saum toj no txhua yam khoom siv tuaj yeem ua tau, tsis tas yuav kho cua sov. Qib 8.8 xov txoj kab uas hla ntawm 16MM lossis tsawg dua, 35 # tempering cua sov kho, 16mm lossis ntau dua, 45 # thiab cov hlau carbon qis tempering. Qib 10.9 nruab nrab-carbon hlau alloy tempering cua sov kho 35Crmo 40Cr thiab lwm yam.

Puas muaj peev xwm sib txawv ntawm cov bolts uas muaj zog heev los ntawm lawv cov khoom siv?

Feem ntau muab faib raws li qib zog.

Qib kev ua tau zoo ntawm cov ntsia hlau yog 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 thiab lwm yam ntau dua 10 qib, ntawm cov ntsia hlau 8.8 thiab siab dua no yog ua los ntawm cov hlau tsis muaj carbon lossis cov hlau carbon nruab nrab thiab kho cua sov (quenched, tempered), feem ntau hu ua cov ntsia hlau muaj zog siab, thiab lwm cov uas feem ntau hu ua cov ntsia hlau sib xws. Qib kev ua tau zoo ntawm cov ntsia hlau muaj ob ntu ntawm cov khoom siv digital, uas yog lub zog tensile ntawm cov khoom siv ntsia hlau thiab tus nqi piv ntawm lub zog flexural.

Piv txwv li, qib kev ua tau zoo 8.8 qib bolts, lub ntsiab lus yog:

1, cov khoom siv bolt nominal tensile zog ntawm 800MPa theem;

2, qhov piv ntawm cov khoom siv bolt zog yog 0.8;

3, lub zog nominal ntawm cov khoom siv bolt txog li 800 × 0.8 = 640MPa qib ntawm cov bolts muaj zog siab feem ntau yog siv rau qib 8.8 thiab 10.9, thiab cov bolts ib txwm feem ntau siv rau qib 4.8.