Lub ntsia liaj qhov rooj yog ib feem ntawm txhua yam, feem ntau siv nyob rau hauv ntau qhov chaw. Nws yog lub taub hau thiab cov ntsia hlau, ob feem ntawm cov muaj pes tsawg leeg ntawm ib chav kawm ntawm fasteners, uas yuav tsum tau siv nyob rau hauv kev sib txuas nrog cov txiv ntseej, feem ntau yog kom ruaj ntseg kev twb kev txuas ntawm ob qhov chaw nrog ib tug los ntawm lub qhov. Tej zaum koj tsis muaj lub tswv yim txog qhov zoo ntawm cov khoom siv ntsia liaj qhov rooj, tsab xov xwm no yuav qhia koj txog cov khoom siv bolt, kev paub zoo, kom ntau tus neeg tuaj yeem kawm paub txog cov khoom me me ntawm lub bolt.
Qhov zoo thiab cov ntaub ntawv ntawm cov bolts hais txog dab tsi?
Cov ntsia liaj qhov rooj zoo sib xws rau 4.8, 8.8, 10.9 thiab lwm yam khoom zoo.
Cov khoom siv los tsim cov ntsia liaj qhov rooj yog Q235, 35K, 40Cr, 45 # steel, 35CrMo steel, 304 stainless hlau thiab 316 stainless hlau, thiab lwm yam.
Cov hlau me me tsuas tuaj yeem tsim cov bolts uas tsis muaj zog, cov pa roj carbon steel nruab nrab tuaj yeem tsim cov khoom nruab nrab lub zog bolts, siab carbon steel thiab hlau alloy steel tuaj yeem tsim muaj zog bolts. Qee qhov bolt qib qhia cov tshuaj muaj pes tsawg leeg thiab cov khoom siv sib xws, tab sis kuj txheeb xyuas cov khoom siv.
Ntawm no yog ib daim ntawv teev cov bolt qib, nyob ntawm seb cov khoom siv. Qib 4.8 tuaj yeem yog Q235, Q195 thiab lwm yam khoom siv hlau me me. Qib 5.8, Q235, tuaj yeem siv rau txhua yam khoom siv thiab tsis tas yuav tsum tau kho cua sov. Qib 8.8, xov txoj kab uas hla 16 hli lossis tsawg dua, 35 #, kho cua sov, 16 hli lossis ntau dua, 45 # thiab cov hlau tsis tshua muaj carbon hlau, kho cua sov. Qib 10.9, nruab nrab carbon alloy steel, kev kho cua sov. Kev kho cua sov 35Crmo 40Cr, thiab lwm yam.
Cov bolts muaj zog tuaj yeem txawv ntawm cov bolts zoo tib yam los ntawm lawv cov khoom?
Bolts feem ntau muab faib raws li lawv cov qib ntawm lub zog.
Bolt kev ua tau zoo qib 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 thiab lwm yam, ntau tshaj 10 qib, suav nrog bolts 8.8 thiab siab dua ua los ntawm cov hlau tsis tshua muaj carbon hlau lossis nruab nrab-carbon steel thiab kub-kho, ntau dua, bolts, uas yog hu ua hardening. bolts feem ntau hu ua bolts zoo tib yam. Qhov kev ua tau zoo ntawm cov ntsia liaj qhov rooj muaj ob feem ntawm cov zauv muaj pes tsawg leeg, raws li lub npe tensile lub zog ntawm cov khoom siv ntsia liaj qhov rooj thiab tus nqi ntawm qhov sib piv ntawm qhov sib zog.
Piv txwv li, qhov ua tau zoo ntawm chav kawm 8.8 bolts yog raws li hauv qab no
1, lub nominal tensile lub zog ntawm cov khoom siv ntsia liaj qhov rooj yog 800MPa;
2, yield zog 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 yog 800 × 0.8 = 640MPa. Feem ntau siv cov bolts uas muaj zog yog qib 8.8 thiab 10.9, thiab cov bolts feem ntau siv yog qib 4.8.
Koj tuaj yeem qhia qhov txawv ntawm cov bolts muaj zog thiab cov bolts zoo li cas?
Cov ntaub ntawv carbon steel tau muab faib ua cov khoom muaj zog thiab cov khoom siv zoo tib yam. Cov pa roj carbon steel bolts uas tsim los ntawm cov ntaub ntawv muaj zog yog hu ua high-strength bolts. Piv txwv li, peb siv 45 # steel los tsim ob lub taub hau bolts, thiab piv txwv li, peb siv 35k steel los tsim hexagonal bolts thiab hexagonal bolts, cov bolts no raug casted, yuav muaj cov txheej txheem kev kho cua sov, tom qab ua tiav, qib ntawm cov ntsia liaj qhov rooj mus txog qib 8.8, txawm hais tias tib yam carbon steel cov khoom, tab sis vim hais tias lawv lub zog ua tau zoo. Piv txwv li, peb siv 40Crmo alloy steel los tsim 10.9 hex bolts, thiab piv txwv li, peb siv 35Crmo alloy steel los tsim 12.9 bolts, thiab lwm yam., cov qib no siab tshaj 8.8 qib, yog li lawv hu ua high-strength bolts.
Bolts tsim nrog cov khoom siv carbon zoo tib yam yog hu ua bolts zoo tib yam. Piv txwv li, peb siv cov khoom siv Q235 los tsim 4.8 hexagonal bolts, zoo li peb cov khoom siv A3 steel los tsim 4 hexagonal txiv ntseej, thiab lwm yam, cov ntaub ntawv no tom qab ua tiav ntawm kev tsim khoom tsuas yog xav tau kev kho deg lossis electro-galvanized nto, thiab tsis tas yuav tsum tau kho cua sov, yog li lawv hu ua bolts zoo tib yam.
Los ntawm cov saum toj no, peb tuaj yeem tsim tau ib txoj cai: thiaj li hu ua high-strength bolts, piv txwv li cov neeg kho tshuab cov khoom sib npaug los yog ntau tshaj 8.8 thiab uas yuav tsum tau kev kho cua sov, hu ua high-strength bolts. Bolts nrog cov khoom siv hauv qab 8.8 yog hu ua cov bolts zoo tib yam, nrog lub zog ntawm 4.8, uas tsis tas yuav tsum tau kho cua sov.
Post lub sij hawm: Aug-30-2024