Metric bolts yog cov khoom siv sib txuas ua ke uas siv dav hauv ntau qhov chaw. Hauv qab no yog cov ncauj lus kom ntxaws qhia txog metric bolts:
1, Kev txhais thiab kev sib xyaw
Metric bolts yog cov khoom siv sib txuas uas siv cov ntsuas ntsuas raws li cov qauv xov, feem ntau suav nrog cov ntsia hlau, txiv ntseej, thiab ntxhua khaub ncaws. Lawv lub luag haujlwm tseem ceeb yog kom nruj kom haum rau ob lossis ntau qhov sib xyaw ua ke, ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm cov khoom siv tshuab.
2, Cov yam ntxwv thiab qhov zoo
Dimensional uniformity thiab standardization: Metric bolts muaj cov yam ntxwv ntawm dimensional uniformity thiab siab standardization, ua rau lawv yooj yim los tsim, tswj, thiab siv. Qhov no ua rau nws yooj yim los pauv bolts ntawm cov khoom siv sib txawv thiab cov tshuab, txo cov nqi kho.
Lub zog siab thiab kev nyab xeeb: Metric bolts muaj cov qib nruj zog thiab cov khoom siv, kom ntseeg tau tias lawv muaj kev ntseeg siab thiab kev nyab xeeb hauv kev sib txuas ntawm cov tshuab. Cov kev cai no xyuas kom meej tias cov bolts yuav tsis ua tsis tau raws li ntau yam kev thauj khoom, yog li tiv thaiv kev nyab xeeb ntawm tag nrho cov khoom siv tshuab.
Siv dav: Metric bolts yog dav siv nyob rau hauv ntau yam xws li mechanical engineering, kev tsim kho engineering, khoom siv hluav taws xob, tsheb, thiab lwm yam. Nws muaj ntau yam specifications thiab qauv ua tau raws li cov kev xav tau ntawm cov ntawv thov sib txawv.
3, Specifications thiab qib
Cov kev qhia tshwj xeeb ntawm cov metric bolts feem ntau yog hais txog lawv txoj kab uas hla (D) thiab suab (P). Cov kev qhia tshwj xeeb muaj xws li M6, M8, M10, M12, M16, M20, thiab lwm yam. Lub nominal txoj kab uas hla thiab suab ntawm cov specifications ua raws li lub teb chaws cov qauv thiab yuav siv tau rau fastening kev sib txuas ntawm ntau yam khoom siv thiab cov qauv.
Tsis tas li ntawd, metric bolts raug cais raws li lawv qib zog. Feem ntau muaj zog muaj xws li 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, thiab 12.9. Cov qhab nia no sawv cev rau cov ntsuas kev ua tau zoo xws li lub zog tensile thiab lub zog ntawm cov bolts, thiab cov neeg siv tuaj yeem xaiv cov qib uas tsim nyog raws li cov kev xav tau tshwj xeeb.
4, Kev thov thiab kev xaiv
Thaum xaiv cov metric bolts, cov neeg siv yuav tsum xav txog yam xws li qhov yuav tsum tau ua kom nruj, ib puag ncig ua haujlwm, thiab kev thauj khoom zoo. Nov yog qee yam yuav tsum xav txog thaum xaiv metric bolts:
Tightening Requirements: Xaiv qhov tsim nyog ntsia liaj qhov rooj specifications thiab qib zog raws li qhov yuav tsum tau fastening ntawm cov khoom txuas.
Kev ua haujlwm ib puag ncig: Xav txog qhov cuam tshuam ntawm qhov chaw ua haujlwm ntawm cov bolts, xws li kub, av noo, corrosiveness, thiab lwm yam.
Load qhov teeb meem: Xaiv qhov tsim nyog ntsia liaj qhov rooj hom thiab specification raws li qhov xwm txheej load los ntawm cov khoom txuas.
Tsis tas li ntawd, thaum txhim kho metric bolts, cov neeg siv kuj yuav tsum tau them sai sai rau cov ntsiab lus hauv qab no:
Ntxuav: Xyuas kom meej tias qhov chaw sib cuag ntawm lub ntsia liaj qhov rooj thiab cov khoom txuas txuas yog huv si thiab tsis muaj roj stains thiab impurities.
Pre tightening: Siv lub zog ua ntej kom nruj raws li qhov yuav tsum tau ua kom ntseeg tau tias cov nyhuv zawm ntawm lub bolt.
Kev tshuaj xyuas: Tsis tu ncua xyuas cov txheej txheem nruj ntawm bolts, tam sim ntawd txheeb xyuas thiab tuav cov bolts xoob lossis puas.
5, Cov ntsiab lus
Metric bolts, ua ib qho tseem ceeb ntawm kev sib txuas ntawm cov khoom siv, ua lub luag haujlwm tseem ceeb hauv kev tsim khoom. Nws qhov loj me, qib siab ntawm kev tsim qauv, lub zog siab, thiab daim ntawv thov dav ua rau nws yog ib qho tseem ceeb hauv ntau yam khoom siv tshuab thiab cov qauv. Thaum xaiv thiab siv cov metric bolts, cov neeg siv yuav tsum xav txog qhov xwm txheej tiag tiag kom paub meej tias kev ruaj ntseg thiab kev nyab xeeb ntawm cov khoom siv tshuab.
