Qhia Koj Paub Txog Qib Thiab Cov Khoom Ntawm Bolts

Boltyog ib feem ntawm txhua yam, uas feem ntau siv nyob rau hauv ntau qhov chaw. Nws yog ib hom fastener uas muaj lub taub hau thiab ntsia hlau. Nws yuav tsum tau siv ua ke nrog cov txiv ntseej kom ceev thiab txuas ob feem nrog los ntawm qhov. Tej zaum koj tsis paub ntau txog qib thiab cov khoom siv ntawm bolts. Tsab ntawv xov xwm no yuav qhia txog kev paub txog cov khoom siv bolt thiab qib, kom ntau tus neeg tuaj yeem kawm paub txog cov khoom me me ntawm bolts.

Dab tsi yog qib thiab cov ntaub ntawv ntawm bolts?

Bolt qib yog hais txog bolt qib 4.8, 8.8 thiab 10.9.

Khoom siv yog hais txog cov khoom siv rau bolts, xws li 45 # steel, 35CrMo steel thiab 304 stainless hlau.

Qib thiab cov khoom siv ntawmboltsmuaj kev sib raug zoo. Cov pa roj carbon tsawg tsuas tuaj yeem tsim cov bolts uas tsis muaj zog, carbon steel tuaj yeem tsim lub zog nruab nrab, thiab cov hlau alloy tuaj yeem tsim cov bolts siab. Qee qib bolt qhia txog cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tshuab, uas kuj qhia cov ntaub ntawv.

Ntawm no yog ib daim ntawv teev cov ntaub ntawv uas yuav siv tau rau bolts ntawm ntau theem. 4.8 Qib tuaj yeem yog A3 Q235, Q195 thiab lwm yam khoom siv qis carbon steel. 5.8 Tag nrho cov ntaub ntawv saum toj no qib Q235 tuaj yeem siv yam tsis muaj kev kho cua sov. 8.8 Qib xov txoj kab uas hla yog qis dua 16mm, 35 # yog quenched thiab tempered, thiab siab dua 16mm, 45 # thiab qis-carbon alloy steel yog quenched thiab tempered. 10.9 qib nruab nrab carbon alloy steel quenched thiab tempered kub kho 35CRMO 40CR, thiab lwm yam.

Puas muaj zog bolts thiab zoo tib yam bolts yuav txawv los ntawm cov khoom?

Feem ntau, nws raug cais raws li qib zog.

Cov qib kev ua tau zoo ntawm bolts rau steel qauv kev sib txuas tuaj yeem muab faib ua ntau tshaj 10 qib, xws li 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9. Ntawm lawv, bolts ntawm qib 8.8 thiab siab dua yog ua los ntawm cov hlau tsis tshua muaj carbon hlau lossis cov pa roj carbon nruab nrab thiab feem ntau hu ua cov ntsia hlau muaj zog tom qab kev kho cua sov (quenching thiab tempering), thiab cov seem feem ntau hu ua bolts zoo tib yam. . Cov cuab yeej bolt qib tsim muaj ob feem ntawm cov duab, sawv cev rau tus nqi nominal tensile lub zog thiab tawm los lub zog piv ntawm cov khoom siv ntsia liaj qhov rooj.

Piv txwv li, bolts ntawm cov cuab yeej chav kawm 8.8 txhais tau tias:

1. Lub nominal tensile lub zog ntawm bolt khoom ncav cuag 800MPa;

2. Qhov sib piv ntawm cov khoom siv ntsia liaj qhov rooj yog 0.8;

3. Lub nominal yield zog ntawm cov khoom siv ntsia liaj qhov rooj ncav cuag 800 × 0.8=640MPa, feem ntau siv lub zog siab bolts yog 8.8 thiab 10.9, thiab feem ntau siv bolts zoo tib yam yog 4.8.

Nyob rau hauv lub neej tiag tiag, yuav ua li cas paub qhov txawv ntawm cov ntsia liaj qhov rooj ntawm tes yog ib tug high-strength bolt? Yog tias lub taub hau ntsia liaj qhov rooj tau cim nrog 4.8 lossis 8.8, nws tuaj yeem txiav txim siab ncaj qha seb nws puas yog lub taub hau muaj zog. Qhov thib ob, nws tuaj yeem raug cais tawm ntawm cov xim. Yog tias nws yog xim dub, nws tuaj yeem kwv yees tias nws yog cov ntsia hlau muaj zog. Ntxiv mus, los ntawm lub suab ntawm kev tsim txom, lub suab ntawm lub zog siab bolts yog qhov tseeb. Koj tseem tuaj yeem siv lub tshuab ua kom sib tsoo thiab txiav txim los ntawm lub txim. Hauv ib lo lus, muaj ntau txoj hauv kev los txiav txim seb lub bolt yog lub zog siab.