Taw qhia
Hex bolts yog ubiquitous nyob rau hauv lub ntiaj teb no ntawm fasteners, nrog rau lawv rau-tog taub hau thiab threaded shafts. Lawv feem ntau siv hauv kev tsim kho, tshuab, tsheb, thiab lwm yam lag luam. Thaum hex bolts yog nrov rau lawv lub zog thiab kav ntev, lawv kuj muaj qee qhov tsis zoo uas cov neeg siv yuav tsum paub txog. Hauv tsab xov xwm no, peb yuav tham txog qhov tsis zoo ntawm hex bolts.
Disadvantage #1: Corrosion
Ib qho tsis zoo ntawm hex bolts yog corrosion. Hex bolts yog ua los ntawm ntau yam ntaub ntawv xws li stainless hlau, carbon hlau, thiab hlau alloy. Thaum cov ntaub ntawv no paub txog lawv cov kev tiv thaiv corrosion, lawv tseem raug rau xeb thiab lwm yam corrosion. Qhov no tuaj yeem cuam tshuam rau lub zog thiab kev ntseeg siab ntawm hex bolts nyob rau lub sijhawm, ua rau muaj kev nyab xeeb.
Ib txoj hauv kev los tiv thaiv corrosion hauv hex bolts yog siv cov txheej txheem corrosion-resistant xws li galvanization, zinc, thiab npib tsib xee. Cov coatings no tiv thaiv qhov chaw ntawm lub ntsia liaj qhov rooj los ntawm kev raug ya raws thiab lwm yam corrosive. Txawm li cas los xij, cov txheej txheem no xav tau kev saib xyuas thiab tuaj yeem ntxiv cov nqi ntxiv rau cov txheej txheem installation.
Disadvantage #2: Installation
Lwm qhov tsis zoo ntawm hex bolts yog cov txheej txheem installation. Hex bolts xav tau cov cuab yeej tshwj xeeb xws li wrenches, sockets, thiab torque wrenches rau kev teeb tsa. Qhov no tuaj yeem siv sijhawm ntev, tshwj xeeb tshaj yog rau cov haujlwm loj uas xav tau ntau txhiab bolts. Tsis tas li ntawd, yog tias cov bolts tsis tau teeb tsa kom zoo, lawv tuaj yeem ua xoob dhau lub sijhawm, cuam tshuam rau kev ncaj ncees ntawm cov khoom uas lawv tuav ua ke.
Ib qho kev daws teeb meem rau qhov teeb meem no yog siv cov bolts pre-tensioned. Cov bolts no tuaj yeem ntsia ua ntej nrog qhov nro sib npaug ntawm qhov xav tau torque, tshem tawm qhov xav tau ntawm lub zog torque wrenches. Qhov no ua rau kev txhim kho sai dua thiab raug dua, txo qhov kev pheej hmoo ntawm cov bolts xoob.
Disadvantage #3: Nqi
Tus nqi ntawm hex bolts kuj tuaj yeem yog qhov tsis zoo, tshwj xeeb tshaj yog thaum piv rau lwm hom fasteners xws li rau tes thiab ntsia hlau. Hex bolts feem ntau yog tsim los ntawm cov ntaub ntawv zoo xws li cov hlau alloys, uas tuaj yeem kim. Tsis tas li ntawd, cov txheej txheem kev teeb tsa yuav tsum muaj cov cuab yeej tshwj xeeb thiab cov txheej txheem, ntxiv cov nqi ntxiv rau qhov project.
Txhawm rau txo cov nqi no, nws yog ib qho tseem ceeb uas yuav tsum xaiv qhov loj me thiab cov khoom tsim nyog rau txoj haujlwm. Kev siv cov bolts loj dua li qhov tsim nyog lossis xaiv cov khoom siv kim heev tuaj yeem ua rau tus nqi tsis tsim nyog.
Disadvantage #4: Xauv Mechanisms
Lwm qhov tsis zoo ntawm hex bolts yog qhov tsis muaj lub tshuab xauv. Ib zaug ntsia, hex bolts tuaj yeem xoob dhau lub sijhawm vim kev co thiab lwm yam. Qhov no tuaj yeem ua rau muaj kev phom sij nyob rau hauv cov ntawv thov uas qhov kev ncaj ncees ntawm cov khoom siv yog qhov tseem ceeb.
Ib qho kev daws teeb meem rau qhov teeb meem no yog siv cov tshuab ntxhua khaub ncaws. Cov tshuab ntxhua khaub ncaws no muaj cov hniav nyob rau hauv lawv qhov chaw sab hauv uas tom rau saum npoo ntawm lub ntsia liaj qhov rooj, tiv thaiv nws los ntawm rotating thiab los xoob. Lwm qhov kev daws teeb meem yog siv cov xov-xauv cov sib txuas, uas txuas cov xov ntawm lub bolt ua ke, tiv thaiv lawv los ntawm loosening.
Disadvantage #5: Zoo nkauj
Thaum kawg, hex bolts tej zaum yuav tsis haum rau cov ntawv thov uas qhov kev zoo nkauj yog qhov tseem ceeb. Hex bolts muaj qhov ua haujlwm zoo, kev ua haujlwm zoo uas yuav tsis haum nrog qee qhov kev tsim qauv zoo nkauj. Tsis tas li ntawd, lub taub hau hex tuaj yeem nyuaj rau zais, uas tuaj yeem ua teeb meem hauv cov ntawv thov uas yuav tsum tau muab zais los ntawm qhov pom.
Ib txoj hauv kev los txo qhov teeb meem no yog siv cov kaus mom zoo nkauj lossis npog uas haum rau lub taub hau hex, muab qhov zoo nkauj zoo nkauj dua. Cov npog no tuaj nyob rau hauv ntau yam ntaub ntawv thiab ua tiav, tso cai rau lawv kom haum rau kev tsim kom zoo nkauj ntawm cov khoom nyob ib puag ncig.
Xaus
Hauv kev xaus, hex bolts yog zoo heev fasteners rau ntau daim ntawv thov vim lawv lub zog thiab durability. Txawm li cas los xij, lawv tuaj nrog lawv tus kheej cov teeb meem tsis zoo uas cov neeg siv yuav tsum paub txog. Los ntawm kev nkag siab txog cov kev tsis zoo no, cov neeg siv tuaj yeem txiav txim siab paub thaum xaiv thiab txhim kho hex bolts, kom ntseeg tau tias lawv ua tau zoo thiab muaj kev nyab xeeb thoob plaws hauv lawv lub neej.
