Yuav kom siv tau qhov kev tswj thiab piav qhia txog qhov yooj yim, yuav tsum tau siv ib txoj kev faib tawm. Cov khoom txheem tau muab faib ua ntau txoj kev faib tawm ntawm cov khoom siv sib txuas:
1. Kev faib tawm raws li thaj chaw ntawm peb
Raws li thaj chaw sib txawv ntawm kev siv cov fasteners, cov fasteners thoob ntiaj teb raug muab faib ua ob pawg: ib qho yog cov fasteners dav dav, lwm qhov yog cov fasteners aerospace. Cov fasteners dav dav yog cov fasteners ib txwm siv. Hom fasteners no hauv kev thoob ntiaj teb los ntawm ISO / TC2 los tsim thiab nyob rau hauv lub kaus ntawm cov qauv hauv tebchaws lossis cov koom haum standardization hauv ntau lub tebchaws kom tshwm sim. Tuam Tshoj cov qauv hauv tebchaws rau cov fasteners tau teeb tsa los ntawm National Technical Committee for Fastener Standardization (SAC / TC85). Cov fasteners no siv cov xov sib xws thiab cov khoom siv kho tshuab ntawm lub kaw lus qib, siv dav hauv tshuab, hluav taws xob, kev thauj mus los, khw muag khoom, kev tsim kho, kev lag luam tshuaj lom neeg, kev xa khoom thiab lwm yam teb, tab sis kuj rau cov khoom siv hauv av aerospace thiab cov khoom siv hluav taws xob. Lub kaw lus ntsuas cov khoom siv kho tshuab tuaj yeem cuam tshuam cov khoom siv kho tshuab ntawm cov fasteners, tab sis feem ntau cuam tshuam lub peev xwm thauj khoom. Lub kaw lus feem ntau tsuas yog txwv rau cov khoom siv thiab cov khoom, tsis txwv rau cov khoom siv tshwj xeeb. Cov khoom txheem rau koj
Cov khoom siv fasteners rau aerospace yog tsim los rau cov tsheb aerospace, cov qauv fasteners no tau tsim thiab muab tso rau hauv ISO/TC20/SC4 thoob ntiaj teb. Cov qauv fasteners ntawm Tuam Tshoj los ntawm cov qauv tub rog hauv tebchaws, cov qauv aviation, thiab cov qauv aerospace ua ke. Cov yam ntxwv tseem ceeb ntawm cov khoom siv fasteners rau aerospace yog raws li nram no: cov khoom txheem yog muab rau koj..
(1) Cov xov siv MJ xov (metric system), UNJ xov (imperial system) lossis MR xov.
(2) Kev ntsuas qib zog thiab kev ntsuas kub tau txais yuav.
(3) Lub zog siab thiab lub teeb yuag, qib zog feem ntau yog siab dua 900Mpa, txog li 1800MPa lossis siab dua.
(4) Kev ntsuas siab, kev ua haujlwm zoo tiv thaiv kev xoob thiab kev ntseeg siab.
(5) Hloov tau rau cov chaw nyuaj.
(6) Cov kev cai nruj heev rau cov ntaub ntawv siv. Cov khoom txheem rau koj
2. Raws li kev faib tawm ntawm cov kab lis kev cai ib txwm muaj
Raws li Tuam Tshoj cov kev coj noj coj ua ib txwm muaj, cov khoom siv txuas tau muab faib ua cov ntsia hlau, cov ntsia hlau studs, cov txiv ntoo, cov ntsia hlau ntoo, cov ntsia hlau rau tus kheej, cov txuas, cov rivets, cov koob, cov nplhaib khaws cia, cov vice txuas thiab cov khoom siv txuas - sib dhos thiab lwm yam 13 pawg. Tuam Tshoj cov qauv hauv tebchaws tau ua raws li qhov kev faib tawm no.
3. Raws li seb qhov kev tsim cov qauv kev faib tawmRaws li kev tsim cov qauv, cov khoom siv fasteners raug muab faib ua cov khoom siv fasteners txheem thiab cov khoom siv fasteners tsis yog tus qauv. Cov khoom siv fasteners txheem yog cov khoom siv fasteners uas tau raug tus qauv thiab tsim ua tus qauv, xws li cov khoom siv fasteners txheem hauv tebchaws, cov khoom siv fasteners txheem hauv tebchaws, cov khoom siv aviation txheem, cov khoom siv aerospace txheem thiab cov khoom siv enterprise txheem. Cov khoom siv fasteners tsis yog tus qauv yog cov khoom siv fasteners uas tseem tsis tau tsim ua tus qauv. Nrog rau kev nthuav dav ntawm qhov ntau thiab tsawg ntawm daim ntawv thov, qhov sib txawv ntawm cov khoom siv fasteners tsis yog sandard yuav maj mam tsim ua tus qauv, hloov mus ua cov khoom siv fasteners txheem; kuj tseem muaj qee cov khoom siv fasteners tsis yog tus qauv, vim muaj ntau yam teeb meem nyuaj, tsuas yog siv tau ua ib feem tshwj xeeb xwb.
4. Kev faib tawm raws li seb cov qauv geometric puas muaj cov yam ntxwv threaded lossis tsis muaj
Raws li seb cov qauv geometric puas muaj cov yam ntxwv threaded, cov fasteners raug muab faib ua cov fasteners threaded (xws li bolts, txiv ntoo, thiab lwm yam) thiab cov fasteners tsis-threaded (xws li washers, retaining rings, pins, ordinary rivets, ring groove rivets, thiab lwm yam).
Cov khoom siv sib txuas uas muaj xov yog cov khoom siv sib txuas uas siv xov los txuas. Cov khoom siv sib txuas uas muaj xov tuaj yeem muab faib ua ntau ntu.
Raws li hom xov, cov khoom siv threaded fasteners raug muab faib ua metric threaded fasteners, imperial uniform threaded fasteners, thiab lwm yam.
Raws li cov yam ntxwv ntawm kev tsim ntawm lub cev niam txiv, cov khoom siv threaded fasteners raug muab faib ua cov khoom siv threaded sab nraud (xws li bolts, studs), cov khoom siv threaded sab hauv (xws li txiv ntoo, txiv ntoo self-locking, txiv ntoo siab locking) thiab cov khoom siv threaded sab hauv thiab sab nraud (xws li threaded bushings) 3 pawg.
Raws li cov yam ntxwv ntawm qhov chaw ntawm cov xov ntawm lub fastener, cov fasteners sab nraud threaded raug muab faib ua screws, bolts thiab studs.
5. Kev faib tawm los ntawm cov khoom siv
Raws li kev siv cov ntaub ntawv sib txawv, cov khoom siv fasteners tau muab faib ua cov khoom siv 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 cov khoom siv tsis yog hlau.
6. Raws li txoj kev faib tawm ntawm cov txheej txheem molding tseem ceeb
Raws li ntau txoj kev sib txawv ntawm cov txheej txheem tsim, cov fasteners tuaj yeem muab faib ua cov fasteners upsetting (xws li aluminium alloy rivets), txiav fasteners (xws li hexagonal bar txiav thiab ua cov ntsia hlau thiab txiv ntoo) thiab txiav nodular fasteners (xws li feem ntau cov ntsia hlau, bolts thiab high lock bolts). Upsetting tuaj yeem muab faib ua txias upsetting thiab kub (sov)..
7. Kev faib tawm raws li qhov xwm txheej kawg ntawm kev kho qhov chaw
Raws li qhov sib txawv ntawm qhov xwm txheej kho qhov chaw kawg, cov khoom siv txuas tau muab faib ua cov khoom siv txuas uas tsis tau kho thiab cov khoom siv txuas uas tau kho. Cov khoom siv txuas uas tsis tau kho feem ntau tsis tau kho tshwj xeeb, thiab tuaj yeem muab tso rau hauv qhov chaw khaws cia thiab xa khoom tom qab ntxuav tas tom qab dhau cov txheej txheem molding thiab kev kho cua sov. Kev kho cov khoom siv txuas, hom kev kho qhov chaw tau piav qhia meej hauv tshooj kho qhov chaw ntawm cov khoom siv txuas. Tom qab cov khoom siv txuas zinc-plated hu ua cov khoom siv txuas zinc-plated, tom qab cov khoom siv txuas cadmium-plated hu ua cov khoom siv txuas cadmium-plated, tom qab oxidation ntawm cov khoom siv txuas hu ua oxidation ntawm cov khoom siv txuas. Thiab lwm yam.
8. Kev faib tawm raws li lub zog
Raws li lub zog sib txawv, cov fasteners raug muab faib ua cov fasteners qis-zog, cov fasteners siab-zog, cov fasteners siab-zog thiab cov fasteners ultra-high-zog 4 pawg. Kev lag luam fastener yog siv rau cov khoom siv kho tshuab ntawm qib qis dua 8.8 lossis lub zog nominal tensile tsawg dua 800MPa fasteners hu ua cov fasteners qis-zog, cov khoom siv kho tshuab ntawm qib ntawm 8.8 thiab 12.9 lossis lub zog nominal tensile ntawm 800MPa-1200MPa fasteners hu ua cov fasteners siab-zog, lub zog nominal tensile ntawm 1200MPa-1500MPa ntawm cov fasteners hu ua cov fasteners siab-zog, lub zog nominal tensile siab dua 1500MPa fasteners hu ua cov fasteners ultra-high-zog.
9. Txheeb xyuas qhov xwm txheej ntawm kev faib ua haujlwm thauj khoom
Raws li qhov sib txawv ntawm qhov xwm txheej ntawm kev ua haujlwm, cov fasteners raug muab faib ua ob pawg: tensile thiab shear hom. Tensile fasteners feem ntau raug rau tensile load lossis pull-shear composite load; shear fasteners feem ntau raug rau shear load. Tensile fasteners thiab shear fasteners nyob rau hauv lub nominal rod txoj kab uas hla kev kam rau siab 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 sib dhos ua haujlwm
Raws li qhov sib txawv ntawm cov kev cai ua haujlwm sib dhos, cov khoom siv txuas tau muab faib ua cov khoom siv sib txuas ib sab (tseem hu ua cov khoom siv sib txuas dig muag) thiab cov khoom siv sib txuas ob sab. Cov khoom siv sib txuas ib sab tsuas yog yuav tsum tau txuas rau ib sab ntawm kev ua haujlwm thiaj li ua tiav kev sib dhos.
11. Kev faib tawm raws li seb lub rooj sib txoos puas tuaj yeem rhuav tshem lossis tsis tau
Raws li seb qhov sib dhos puas tuaj yeem rhuav tshem tau lossis tsis tau, cov khoom siv txuas tau muab faib ua cov khoom siv txuas uas tshem tau thiab cov khoom siv txuas uas tsis tshem tau. Cov khoom siv txuas uas tshem tau yog cov khoom siv txuas uas yuav tsum tau rhuav tshem thiab tuaj yeem rhuav tshem thaum siv tom qab sib dhos, xws li bolts, screws, txiv ntoo, washers thiab lwm yam. Cov khoom siv txuas uas tsis tshem tau txhais tau tias yog kev sib dhos, thaum siv cov txheej txheem thiab nws cov khoom siv txuas tsis raug rhuav tshem; yuav tsum tau rhuav tshem, hom khoom siv txuas no kuj tuaj yeem rhuav tshem tau, tab sis feem ntau ua rau cov khoom siv txuas lossis txuas rau lub kaw lus tsis tuaj yeem siv dua vim muaj kev puas tsuaj rau cov khoom siv txuas, suav nrog ntau yam rivets, bolts xauv siab, studs, txiv ntoo xauv siab, thiab lwm yam.
12. Muab faib ua pawg raws li cov ntsiab lus kev txawj ntse
Raws li cov ntsiab lus txuj ci sib txawv, cov khoom siv fasteners raug muab faib ua 3 theem: qis kawg, nruab nrab kawg thiab siab kawg. Kev lag luam fasteners tau siv rau qhov tseeb cim siab tshaj plaws tsis siab tshaj 7, lub zog tsawg dua 800MPa ntawm cov khoom siv dav dav fasteners hu ua low-end fasteners, cov fasteners no tsis nyuaj rau kev siv tshuab, cov ntsiab lus txuj ci qis dua thiab tsis muaj nqi ntxiv; yuav yog qhov tseeb cim siab tshaj plaws ntawm 6 lossis 5, lub zog ntawm 800MPa-1200MPa, cov khoom siv muaj qee qhov yuav tsum tau ua ntawm cov fasteners hu ua nruab nrab-ntau fasteners, uas muaj qee qib ntawm kev nyuaj txuj ci, fasteners thiab lwm yam ntsiab lus txuj ci. Cov fasteners muaj qee qhov nyuaj txuj ci, qee qhov ntsiab lus txuj ci thiab ntxiv tus nqi; qhov tseeb cim siab tshaj plaws ntawm ntau dua 5 theem, lossis lub zog ntau dua 1200MPa, lossis kev tiv thaiv kev qaug zog, lossis kev tiv thaiv kub nkag, lossis kev tiv thaiv xeb thiab kev ua kom lubrication tshwj xeeb, xws li cov khoom siv tshwj xeeb fasteners hu ua high-end fasteners, cov fasteners no nyuaj txuj ci, cov ntsiab lus txuj ci siab thiab ntxiv tus nqi.
Muaj ntau lwm txoj hauv kev los faib cov fasteners, xws li kev faib tawm raws li lub taub hau ntawm cov fasteners, thiab lwm yam, tsis tas yuav teev npe. Nrog cov ntaub ntawv, cov khoom siv thiab cov txheej txheem txhais tau tias thiab lwm yam txuas ntxiv mus tsim kho tshiab, tib neeg yuav raws li qhov xav tau los muab cov txheej txheem faib tawm tshiab.
Lub sijhawm tshaj tawm: Cuaj hlis-11-2024
