Fastener

Lub fastener (US English) los yog fastening (UK English)[1] yog ib tug hardware ntaus ntawv uas mechanically koom los yog affixes ob los yog ntau tshaj khoom ua ke.Feem ntau, fasteners yog siv los tsim cov pob qij txha tsis tas li;uas yog, cov pob qij txha tuaj yeem raug tshem tawm lossis rhuav tshem yam tsis muaj kev puas tsuaj rau cov khoom sib koom ua ke.[2]Vuam yog ib qho piv txwv ntawm kev tsim cov pob qij txha mus tas li.Hlau fasteners feem ntau yog ua los ntawm stainless hlau, carbon steel, los yog hlau alloy.

Lwm txoj hauv kev los koom nrog cov ntaub ntawv suav nrog: crimping, vuam, soldering, brazing, taping, gluing, cement, lossis siv lwm cov nplaum.Kev quab yuam kuj tseem siv tau, xws li cov hlau nplaum, lub tshuab nqus tsev (xws li lub khob nqus dej), lossis txawm tias muaj kev sib txhuam (xws li cov nplaum nplaum).Qee hom woodworking pob qij txha siv cov kev sib cais sab hauv, xws li dowels los yog biscuits, uas nyob rau hauv ib qho kev txiav txim siab yuav suav hais tias fasteners nyob rau hauv lub Scope ntawm kev sib koom ua ke, txawm hais tias ntawm lawv tus kheej lawv tsis yog lub hom phiaj ntawm fasteners.

Cov rooj tog uas muab rau hauv daim ntawv tiaj tus feem ntau siv cam dowels xauv los ntawm cam locks, tseem hu ua conformat fasteners.Fasteners kuj tseem siv tau los kaw lub thawv xws li lub hnab, lub thawv, lossis lub hnab ntawv;los yog lawv tuaj yeem koom ua ke ntawm ob sab ntawm qhov qhib ntawm cov khoom siv tau yooj yim, txuas lub hau rau lub thawv, thiab lwm yam. Muaj cov khoom siv tshwj xeeb kaw, xws li lub khob cij.

Cov khoom xws li hlua, hlua, hlau, cable, saw, lossis yas qhwv tuaj yeem siv los kho cov khoom siv;tab sis tsis yog feem ntau categorized li fasteners vim lawv muaj kev siv ntau ntxiv.Ib yam li ntawd, hinges thiab springs tuaj yeem koom nrog cov khoom ua ke, tab sis feem ntau tsis suav tias yog cov fasteners vim lawv lub hom phiaj tseem ceeb yog tso cai rau kev sib koom ua ke es tsis yog kev sib koom ua ke.

Kev lag luam

Xyoo 2005, nws tau kwv yees tias Tebchaws Asmeskas kev lag luam fastener khiav 350 cov chaw tsim khoom thiab ntiav 40,000 tus neeg ua haujlwm.Kev lag luam muaj zog khi rau kev tsim tsheb, dav hlau, khoom siv, tshuab ua liaj ua teb, kev tsim kho kev lag luam, thiab kev tsim kho vaj tse.Ntau tshaj 200 billion fasteners tau siv ib xyoos hauv Asmeskas, 26 billion ntawm cov no los ntawm kev lag luam tsheb.Qhov loj tshaj plaws distributor ntawm fasteners nyob rau hauv North America yog lub tuam txhab Fastenal.[3]

Khoom siv

Muaj peb qhov loj steel fasteners siv hauv kev lag luam: stainless hlau, carbon hlau, thiab hlau alloy.Cov qib loj siv hauv stainless hlau fasteners: 200 series, 300 series, thiab 400 series.Titanium, aluminium, thiab ntau yam alloys kuj yog cov khoom siv ntawm kev tsim kho rau hlau fasteners.Feem ntau, cov coatings tshwj xeeb lossis plating tuaj yeem siv rau cov hlau fasteners los txhim kho lawv cov kev ua tau zoo los ntawm, piv txwv li, txhim kho corrosion.Cov coatings / platings muaj xws li zinc, chrome, thiab kub dip galvanizing.[4]

Daim ntawv thov

Thaum xaiv ib lub fastener rau cov ntawv thov kev lag luam, nws yog ib qho tseem ceeb uas yuav tau xav txog ntau yam.Lub threading, thov load ntawm lub fastener, qhov nruj ntawm fastener, thiab tus naj npawb ntawm fasteners xav tau tag nrho yuav tsum tau muab rau hauv tus account.

Thaum xaiv ib lub fastener rau ib daim ntawv thov, nws yog ib qho tseem ceeb kom paub qhov tshwj xeeb ntawm daim ntawv thov no los pab xaiv cov khoom tsim nyog rau kev siv.Yam uas yuav tsum tau xav txog muaj xws li:

Kev siv tau

Ib puag ncig, suav nrog qhov kub thiab txias, dej raug, thiab cov khoom muaj peev xwm corrosive

Kev teeb tsa

Cov ntaub ntawv yuav tsum tau koom nrog

Reusability

Kev txwv qhov hnyav[5] ASME B18 cov qauv ntawm qee cov fasteners

Lub Koom Haum American Society of Mechanical Engineers (ASME) tau tshaj tawm ntau yam qauv ntawm cov fasteners.Qee yam yog:

B18.3 Socket Cap, Lub xub pwg nyom, Teem Screws, thiab Hex Keys (Inch Series)

B18.6.1 Ntoo Screws (Inch Series)

B18.6.2 Slotted Head Cap Screws, Square Head Screws, Thiab Slotted Headless Teem Screws (Inch Series)

B18.6.3 Tshuab Screws, Tapping Screws, thiab Hlau Tsav Screws (Inch Series)

B18.18 Kev lees paub zoo rau cov fasteners

B18.24 Tshooj Qhia Tus Naj Npawb (PIN) Code System Standard rau B18 Fastener Cov Khoom

Rau cov khoom siv tub rog

American screws, bolts, thiab txiv ntseej yog keeb kwm tsis tau hloov pauv nrog lawv cov British counterparts, thiab yog li ntawd yuav tsis haum cov cuab yeej British zoo.Qhov no, ib feem, tau pab ua rau kev txhim kho ntau tus qauv Tub Rog Tebchaws Meskas thiab cov lus qhia tshwj xeeb rau kev tsim cov khoom siv tseem ceeb uas siv rau kev ua tub rog lossis kev tiv thaiv, suav nrog cov fasteners.Ntiaj Teb Tsov Rog II yog qhov tseem ceeb hauv qhov kev hloov pauv no.

Ib qho tseem ceeb ntawm cov qauv tub rog feem ntau yog traceability.Muab qhov yooj yim, cov tuam txhab lag luam kho vajtse yuav tsum muaj peev xwm taug qab lawv cov ntaub ntawv mus rau lawv qhov chaw, thiab muab traceability rau lawv cov khoom nkag mus rau hauv cov khoom siv, feem ntau ntawm cov lej bar lossis cov txheej txheem zoo sib xws.Qhov no traceability yog npaj los pab xyuas kom meej tias cov khoom siv tau zoo thiab cov qauv zoo tau ua tiav hauv txhua kauj ruam ntawm kev tsim khoom;Tsis tas li ntawd, cov khoom tsis zoo tuaj yeem taug qab mus rau lawv qhov chaw.[7]