Ordinary expansion bolts muaj xws li ntsia liaj qhov rooj shank, expansion tes tsho, tapered txiv ntseej, tiaj tus ntxhua khaub ncaws, caij nplooj ntoos hlav ntxhua khaub ncaws, thiab hexagonal txiv ntoo. Lawv yog cov yooj yim hauv cov qauv, pheej yig, thiab haum rau kev siv dav dav. Kev nthuav dav hooks yog tsim rau hauv hooks ntawm qhov kawg ntawm lub bolt shank, feem ntau yog siv rau kev ncua cov khoom hnyav, xws li cua txias sab nraum zoov chav tsev thiab lub teeb fixtures. Qhov sib txuas xav tau lub zog txaus los tiv thaiv kev tawg. Internal expansion bolts (tseem hu ua internally forced expansion bolts) muaj lawv cov qauv expansion nyob rau hauv lub ntsia liaj qhov rooj. Tightening lub puab ntsia liaj qhov rooj ua rau lub tes tsho nthuav. Tsis muaj qhov cuam tshuam sab nraud, lawv ua kom zoo nkauj thiab tsim nyog rau cov ntawv thov uas zoo li tseem ceeb, xws li cov phab ntsa zoo nkauj. Lub tes tsho nthuav dav bolts muaj lub tes tsho ntev ntev, ntau dua qhov tob tob, thiab siab dua load-cov kabmob muaj peev xwm, ua rau lawv haum rau kho cov khoom hnyav- cov khoom siv.
Torque- tswj kev nthuav dav bolts ua tiav los ntawm kev tswj lub zog nruj. Lawv yooj yim rau kev khiav lag luam thiab cia siab rau qhov kev paub ntawm lub installer lossis lub torque wrench, ua rau lawv haum rau feem ntau cov xwm txheej. Tension- tswj kev nthuav dav bolts txiav txim siab txog qib ntawm kev nthuav dav los ntawm kev tswj cov ntsia liaj qhov rooj qhov nro, muab qhov tseeb ntawm qhov tseeb thiab ua rau lawv tsim nyog rau cov khoom siv hauv kev lag luam nrog cov kev cai nruj nruj. Kev cuam tshuam - hom expansion bolts xav tau ib lub rauj los tsoo lub bolt tail kom nthuav lub tes tsho, tso cai rau kev teeb tsa sai thiab tsim nyog rau qhov chaw kaw lossis cov xwm txheej uas tus ciaj ntswj tsis yooj yim.
Cov pa roj carbon steel expansion bolts yog ua los ntawm cov ntaub ntawv xws li Q235 thiab 45 # steel, thiab feem ntau galvanized (kub-dip galvanized lossis electro-galvanized). Lawv yog cov tsawg- nqi thiab haum rau qhov chaw qhuav. Stainless hlau expansion bolts yog ua los ntawm 304 thiab 316 stainless hlau, muab kev tiv thaiv corrosion zoo heev thiab haum rau qhov chaw ntub dej (xws li chav dej thiab chav ua noj), chaw sab nraum zoov, thiab cov chaw muaj tshuaj lom neeg. Alloy expansion bolts yog ua los ntawm siab- lub zog alloy steel (xws li 40Cr), uas, tom qab kev kho cua sov, muab lub zog siab thiab thauj khoom -cov kabmob muaj peev xwm, ua rau lawv tsim nyog rau cov khoom hnyav- cov khoom siv ua haujlwm, xws li cov tshuab loj thiab cov khoom siv txuas ntxiv.
Hluav taws kub-cov ntsia hlau txuas ntxiv tuaj yeem tswj tau qee qhov kev quab yuam ntawm qhov kub thiab txias, ua tau raws li cov cai ntawm lub tsev tiv thaiv hluav taws, thiab tsim nyog rau kev teeb tsa cov chaw tiv thaiv hluav taws xws li firewalls thiab fireproof ceilings; seismic expansion bolts muaj kev ua haujlwm zoo seismic thiab tuaj yeem tswj kev ruaj ntseg nyob rau hauv seismic loads, ua rau lawv tsim nyog rau kev txhim kho cov tsev thiab cov khoom siv hauv av qeeg- thaj chaw muaj kev cuam tshuam; siab -kub resistant expansion bolts siv siab- cov ntaub ntawv kub thiab cov khoom sib khi, thiab tuaj yeem siv rau hauv siab - qhov kub thiab txias tshaj 200 degree, ua rau lawv haum rau siab - qhov kub thiab txias ua haujlwm xws li metallurgy thiab tshuaj industries.
