Dab tsi ntawm bolts yog ib qho ntawm cov threaded fasteners?

Bolt hom yog nyob rau hauv tsev neeg threaded fastener thiab yog siv nyob rau hauv ua ke nrog threaded ceev, feem ntau yog mus koom ob los yog ntau tshaj cov khoom. Bolts tau muab faib ua ntau hom raws li lawv lub taub hau zoo, lub zog, nto tiav thiab cov khoom siv.

Bolt hom thiab lawv siv. Tag nrho cov kev faib tawm no ua lub luag haujlwm tseem ceeb hauv kev xaiv zaum kawg ntawm hom ntsia liaj qhov rooj rau ib daim ntawv thov tshwj xeeb. Koj yuav tsum muaj kev paub xaiv hom ntsia liaj qhov rooj kom raug rau txoj haujlwm tshwj xeeb ntawm tes, vim muaj ntau hom bolts uas ua haujlwm zoo dua li lwm tus.

Bolt taub hau hom hom
Bolts thiab screws muaj ntau yam ntawm lub taub hau duab. Cov taub hau no yog siv los tuav cov cuab yeej rau zawm bolts.

Feem ntau cov ntsia hlau taub hau hom muaj xws li square, hexagonal thiab slotted hex washers thiab kaus mom.

Thawj lub taub hau taub hau siv yog cov taub hau square. Lub taub hau square muaj ib qho square zawj hauv lub taub hau thiab lub taub hau uas tiv thaiv kev sib hloov thaum siv lub zog. Lub taub hau square tseem siv niaj hnub no, tab sis lub taub hau hex tau dhau los ua ntau dua. Hex taub hau yog siv nrog wrenches los yog wrenches los muab torque.

 

Muaj ntau ntau lub taub hau duab siv xws li lub taub hau tiaj tus, lub taub hau oval, lub taub hau tiaj tus, lub taub hau puag ncig, khawm taub hau thiab lub taub hau truss.

Bolt zog hom
Hais txog cov ntaub ntawv siv los ua cov bolts thiab qhov ntev uas cov bolts tau ua.

Cov lus hauv qab no teev ntau yam khoom siv ntawm cov bolts thiab lawv cov cim sib raug. Cov ntaub ntawv teev nyob rau hauv lub rooj yog nyob rau hauv ascending order.

• Tsawg-carbon steel
• Cov pa roj carbon steel
• hlau alloy
• Stainless hlau

 

Bolt Surface Finish Hom
Bolt nto txheej yog hais txog cov txheej siv ntawm cov khoom siv ntsia liaj qhov rooj. Nyob ntawm seb hom kev thov yuav tsum tau ua, cov txheej txheej saum npoo tuaj yeem muaj los ntawm qhov siab heev mus rau qhov tsis zoo.

Anti-corrosion finishes yog cov piv txwv ntawm kev ua tiav zoo heev, thaum cov khoom siv kho kom zoo nkauj siv rau cov xim bolts raug cais raws li qhov ua tiav qis dua. Tsawg kawg qee qhov ntawm cov bolts yuav tsis tau coated.

Muaj ntau ntau hom kev kho mob bolt saum npoo tam sim no siv, thiab lawv feem ntau yog cais raws li hauv qab no:

 

Hom bolt hom
Uncoated. Kuj hu ua ntuj xim, ntuj xim, dub. Yog tias tsis muaj kev kho saum npoo tau teev tseg, lub ntsia liaj qhov rooj yuav cia li txhais tau tias tsis muaj coated. Tsis tu ncua ntsia bolts tsis yog corrosion resistant.

Galvanized bolts hom
Lub thicker lub txheej, ntau dua corrosion kuj thiab vice versa. Nws yog dav siv vim nws tus nqi qis. Cov txheej yog du thiab cov ntsia hlau nto muaj qhov ua tiav zoo. Cov coatings no kuj yooj yim ua hauj lwm nrog thiab muab ib tug pleev xim rau saum npoo yog xav tau.

Yellow plated bolt hom
Zinc Chrome Yellow tseem hu ua Zinc Yellow, z/chr lossis Zinc Chrome Yellow. Qhov sib tov no hnyav dua li cov chromate ntshiab thiab yog li ntawd muaj kev tiv thaiv corrosion zoo dua.

Kub dip galvanizing (HDG)
Ib txoj kev uas bolts yog immersed nyob rau hauv molten zinc. Zinc adheres rau fasteners thaum immersed nyob rau hauv dej. Txij li thaum lub bolts yog immersed nyob rau hauv dej, lub txheej thickness yog ntau dua galvanizing. Yog li ntawd, nws muaj zoo heev corrosion kuj.

Bolt yam khoom
Nws yog ib qho tseem ceeb los xaiv cov khoom fastening tsim nyog rau ib daim ntawv thov tshwj xeeb. Qhov no yog vim hais tias bolts yog siv nyob rau hauv ntau yam hnyav-lub luag hauj lwm thiab lub teeb-duty daim ntaub ntawv, thiab cov khoom ntawm cov bolts yuav tsum tau xaiv raws li.

Siv steel bolts es tsis txhob siv aluminium bolts tuaj yeem cuam tshuam rau qhov zoo thiab ua haujlwm ntev ntawm qhov sib koom ua ke. Lwm yam, xws li ib puag ncig, muaj cov khoom corrosive, thiab kev ruaj ntseg ntawm cov khoom, tuaj yeem hloov cov khoom siv tau zoo.

 

 

Qee cov khoom siv ntsia liaj qhov rooj muaj xws li:

hlau
Nws yog cov khoom siv feem ntau siv vim nws qhov siab formability, tensile zog thiab durability. Hlau yog pheej yig los tsim thiab dav muaj.

Ntau yam ntawm cov alloys muaj los muab cov qib sib txawv ntawm lub zog kom haum rau kev siv sib txawv.

 

Stainless hlau
Ib qho hlau uas sib txuas cov khoom ntawm cov hlau me me nrog cov qib tshwj xeeb ntawm chromium thiab npib tsib xee. Cov chromium hauv stainless hlau ua rau nws corrosive.

Tsawg carbon cov ntsiab lus tiv thaiv hardening. Stainless hlau tuaj yeem yog martensite lossis austenitic. Martensitic stainless hlau yog ruaj thiab muaj zog los ntawm tshav kub, tab sis tsis muaj corrosion kuj.

 

Austenitic stainless hlau yog hom stainless hlau ntau tshaj plaws thiab muaj cov qib siab nickel thiab chromium, muab nws zoo heev corrosion kuj.

 

Qhov no stainless hlau kuj tuaj yeem tiv taus ntau yam tsis muaj cracking.