Txhawm rau siv kev tswj hwm thiab kev piav qhia ntawm qhov yooj yim, yuav tsum tau txais ib txoj hauv kev ntawm nws qhov kev faib tawm. Cov txheej txheem txheej txheem tau sau tseg nyob rau hauv ntau txoj kev siv fastener kev faib tawm:
1. Kev faib tawm raws li thaj chaw ntawm peb
Raws li qhov sib txawv ntawm kev siv cov fasteners, thoob ntiaj teb fasteners tau muab faib ua ob pawg: ib qho yog lub hom phiaj dav dav, lwm qhov yog aerospace fasteners.General-purpose fasteners feem ntau yog siv cov fasteners zoo tib yam. Hom qauv fastener no nyob rau hauv lub thoob ntiaj tebization los ntawm ISO / TC2 los tsim thiab nyob rau hauv lub kaus ntawm lub teb chaws cov qauv los yog standardization koom haum nyob rau hauv ntau lub teb chaws yuav tshwm sim. Tuam Tshoj lub teb chaws tus qauv rau fasteners yog teem los ntawm National Technical Committee for Fastener Standardization (SAC/TC85). Cov fasteners no siv cov xov zoo sib xws thiab cov khoom siv kho tshuab ntawm qib system, dav siv hauv tshuab, hluav taws xob, tsheb thauj mus los, khw muag khoom, kev tsim kho, kev lag luam tshuaj, kev xa khoom thiab lwm yam kev lag luam, tab sis kuj rau aerospace av khoom thiab khoom siv hluav taws xob. Cov cuab yeej cuab tam ntsuas qhov system tuaj yeem cuam tshuam cov cuab yeej cuab yeej cuab tam ntawm fasteners, tab sis feem ntau cuam tshuam txog lub peev xwm nqa. Lub kaw lus feem ntau tsuas yog txwv rau cov khoom siv thiab cov khoom, tsis txwv rau cov khoom siv tshwj xeeb. Txheem qhov chaw rau koj
Aerospace fasteners yog tsim los rau aerospace tsheb fasteners, xws li cov qauv fastener thoob ntiaj teb ISO / TC20 / SC4 los tsim thiab ntaus nqi. Tuam Tshoj tus qauv aerospace fastener los ntawm fastener lub teb chaws tub rog qauv, aviation qauv, aerospace qauv ua ke. Cov yam ntxwv tseem ceeb ntawm aerospace fasteners yog raws li hauv qab no: cov txheej txheem yog muab rau koj.
(1) Cov xov siv MJ xov (metric system), UNJ xov (imperial system) lossis MR xov.
(2) Kev ntsuas lub zog thiab qhov ntsuas kub tau txais yuav.
(3) Lub zog siab thiab lub teeb yuag, qib zog feem ntau yog siab dua 900Mpa, mus txog 1800MPa lossis siab dua.
(4) High precision, zoo tiv thaiv xoob kev ua tau zoo thiab kev ntseeg siab.
(5) Adaptable rau complex ib puag ncig.
(6) Cov kev cai nruj ntawm cov khoom siv. Cov txheej txheem rau koj
2. Raws li kev coj noj coj ua ntawm kev coj noj coj ua
Raws li Tuam Tshoj txoj kev coj noj coj ua, fasteners tau muab faib ua bolts, studs, ceev, screws, ntoo screws, self-tapping screws, washers, rivets, pins, tuav rings, txuas lwm tus thiab fasteners - sib dhos thiab lwm yam 13 pawg. Tuam Tshoj lub teb chaws tus qauv tau ua raws li qhov kev faib tawm no.
3. Raws li seb qhov kev loj hlob ntawm cov qauv kev faib tawmRaws li seb txoj kev loj hlob ntawm cov qauv, fasteners tau muab faib ua tus qauv fasteners thiab tsis yog tus qauv fasteners. Standard fasteners yog fasteners uas tau tsim thiab tsim ib tus qauv, xws li lub teb chaws tus qauv fasteners, lub teb chaws tus qauv tub rog fasteners, aviation standard fasteners, aerospace standard fasteners thiab enterprise standard fasteners. Non-standard fasteners yog fasteners uas tseem tsis tau tsim ib tus qauv. Nrog rau kev nthuav dav ntawm daim ntawv thov, cov qauv dav dav ntawm cov khoom siv tsis yog xuab zeb yuav maj mam tsim tus qauv, hloov mus rau cov qauv fasteners; kuj tseem muaj qee qhov tsis-tus qauv fasteners, vim muaj ntau yam ntawm cov txheej txheem nyuaj, tsuas yog siv tau los ua ib qho tshwj xeeb.
4.Classification raws li seb cov qauv geometric muaj threaded nta los yog tsis
Raws li seb cov qauv geometric muaj cov yam ntxwv ntawm threaded, fasteners tau muab faib ua threaded fasteners (xws li bolts, txiv ntseej, thiab lwm yam) thiab non-threaded fasteners (xws li washers, tuav rings, pins, zoo tib yam rivets, nplhaib zawj rivets, thiab lwm yam).
Threaded fasteners yog fasteners uas ua kev sib txuas los ntawm txoj kev threads. Threaded fasteners tuaj yeem muab faib ntxiv.
Raws li hom xov, threaded fasteners tau muab faib ua metric threaded fasteners, imperial uniform threaded fasteners, thiab lwm yam.
Raws li cov yam ntxwv ntawm kev tsim ntawm niam txiv lub cev, threaded fasteners tau muab faib ua lwm yam threaded fasteners (xws li bolts, studs), internal threaded fasteners (xws li txiv ntseej, self-locking ceev, siab xauv ceev) thiab sab hauv thiab sab nraud threaded fasteners (xws li threaded bushings) 3 pawg.
Raws li cov yam ntxwv ntawm cov threads ntawm lub fastener, sab nraud threaded fasteners muab faib ua screws, bolts thiab studs.
5. Kev faib tawm los ntawm cov khoom siv
Raws li kev siv cov khoom sib txawv, cov fasteners tau muab faib ua carbon structural steel fasteners, alloy structural steel fasteners, stainless hlau fasteners, high-temperature alloy fasteners, aluminium alloy fasteners, titanium alloy fasteners, titanium-niobium alloy fasteners thiab non-metallic fasteners.
6. Raws li lub ntsiab molding txheej txheem kev faib tawm
Raws li cov txheej txheem sib txawv ntawm kev tsim cov txheej txheem, cov fasteners tuaj yeem muab faib ua kev ntxhov siab fasteners (xws li aluminium alloy rivets), txiav fasteners (xws li hexagonal bar txiav thiab ua cov ntsia hlau thiab ceev) thiab txiav nodular fasteners (xws li feem ntau cov ntsia hlau, bolts thiab siab xauv bolts). Upsetting yuav muab faib ua txias upsetting thiab kub (sov).
7. Kev faib tawm raws li qhov kawg ntawm qhov chaw kho mob
Raws li qhov sib txawv ntawm qhov kawg ntawm qhov kev kho mob saum npoo av, cov fasteners yog categorized rau hauv cov tsis kho fasteners thiab kho fasteners. Cov fasteners tsis kho feem ntau tsis raug kho tshwj xeeb, thiab tuaj yeem muab tso rau hauv qhov chaw cia thiab xa tawm tom qab tsim nyog tu tom qab dhau cov txheej txheem molding thiab kev kho cua sov. Kev kho cov fasteners, hom kev kho deg yog cov ncauj lus kom ntxaws nyob rau hauv lub fastener nto kho tshooj. Tom qab zinc-plated fasteners yog hu ua zinc-plated fasteners, tom qab cadmium-plated fasteners yog hu ua cadmium-plated fasteners, tom qab oxidation ntawm fasteners yog hu ua oxidation ntawm fasteners. Thiab li ntawd.
8. Kev faib tawm raws li lub zog
Raws li qhov sib txawv ntawm lub zog, cov fasteners tau muab faib ua cov fasteners uas muaj zog tsawg, lub zog muaj zog fasteners, high-strength fasteners thiab ultra-high-strength fasteners 4 pawg. Fastener kev lag luam yog accustomed mus rau lub mechanical zog ntawm qib qis dua 8.8 los yog nominal tensile zog ntawm tsawg dua 800MPa fasteners hu ua low-strength fasteners, mechanical zog ntawm qib ntawm 8.8 thiab 12.9 los yog nominal tensile zog ntawm 800MPa-1200MPa fasteners nominal fasteners. tensile lub zog ntawm 1200MPa-1500MPa ntawm cov fasteners hu ua high-strength fasteners, nominal tensile zog siab tshaj 1500MPa fasteners hu ua ultra-high-strength fasteners.
9.Case qhov xwm txheej ntawm kev ua haujlwm load
Raws li qhov sib txawv ntawm qhov ua haujlwm load, fasteners tau muab faib ua ob pawg: tensile thiab shear type. Tensile fasteners feem ntau raug rau tensile load lossis rub-shear composite load; shear fasteners feem ntau raug rau shear load. Tensile fasteners thiab shear fasteners nyob rau hauv lub nominal pas nrig txoj kab uas hla kam rau ua thiab threaded fasteners xov ntev, thiab lwm yam. Muaj qee qhov sib txawv.
10. Kev faib tawm raws li qhov yuav tsum tau ua ntawm kev ua haujlwm sib dhos
Raws li qhov sib txawv ntawm cov kev xav tau ntawm kev sib dhos, cov fasteners tau muab faib ua ib qho kev sib txuas fasteners (tseem hu ua qhov muag tsis pom kev sib txuas) thiab ob tog sib txuas fasteners. Ib leeg-txoj kev txuas fasteners tsuas yog yuav tsum tau txuas nrog ib sab ntawm kev ua haujlwm tuaj yeem ua tiav kev sib dhos.
11. Kev faib tawm raws li qhov kev sib dhos tuaj yeem raug tshem tawm lossis tsis tau
Raws li seb lub rooj sib txoos puas tuaj yeem disassembled los yog tsis, fasteners tau muab faib ua cov fasteners tshem tau thiab tsis tshem tau cov fasteners. Tshem tau fasteners yog fasteners uas yuav tsum tau disassembled thiab yuav disassembled nyob rau hauv tus txheej txheem ntawm kev siv tom qab sib dhos, xws li bolts, screws, ntau txiv ntseej, washers thiab hais txog. Non-detachable fasteners yog hais txog kev sib dhos, hauv kev siv cov txheej txheem thiab nws cov fasteners tsis disassembled; yuav tsum tau disassembled, hom fasteners no kuj yuav disassembled, tab sis feem ntau ua rau fasteners los yog txuas mus rau lub system tsis tuaj yeem rov qab siv tau vim kev puas tsuaj rau cov fasteners, nrog rau ntau yam rivets, siab lock bolts, studs, siab xauv ceev, thiab hais txog.
12. Cuam tshuam los ntawm cov ntsiab lus technical
Raws li cov ntsiab lus sib txawv, fasteners tau faib ua 3 qib: qis-kawg, nruab nrab-kawg thiab high-end. Fastener kev lag luam yog accustomed mus rau lub siab tshaj plaws cim qhov tseeb yog tsis siab tshaj 7, lub zog tsawg tshaj li 800MPa ntawm cov khoom siv dav dav hu ua low-end fasteners, xws li fasteners tsis tshua muaj technically nyuaj, cov ntsiab lus thev naus laus zis tsawg dua thiab muaj nqis ntxiv; yuav yog qhov siab tshaj plaws ntawm qhov tseeb ntawm 6 lossis 5, lub zog ntawm 800MPa-1200MPa, cov khoom muaj qee qhov kev xav tau ntawm cov fasteners hu ua mid-range fasteners, uas muaj qee qhov kev nyuaj, fasteners thiab lwm yam ntsiab lus. Fasteners muaj qee yam kev nyuaj, qee cov ntsiab lus technical thiab ntxiv tus nqi; lub siab tshaj plaws cim qhov tseeb ntawm ntau tshaj 5 qib, los yog lub zog ntawm ntau tshaj 1200MPa, los yog anti-kev qaug zog yuav tsum tau, los yog anti-kub creep, los yog tshwj xeeb anticorrosion thiab lubrication yuav tsum tau, xws li tshwj xeeb cov ntaub ntawv fasteners hu ua high-end fasteners, xws li fasteners yog technically nyuaj, siab technical cov ntsiab lus thiab ntxiv tus nqi.
Muaj ntau ntau txoj hauv kev los txheeb xyuas cov fasteners, xws li kev faib tawm raws li lub taub hau ntawm cov fasteners, thiab lwm yam, tsis tas yuav teev. Nrog rau cov ntaub ntawv, cov cuab yeej siv tshuab thiab cov txheej txheem txhais tau tias thiab txuas ntxiv mus rau kev tsim kho tshiab, tib neeg yuav ua raws li qhov xav tau los muab cov txheej txheem kev faib tawm tshiab fastener.
Lub sij hawm xa tuaj: Sep-11-2024
