Cov cim ntawm Fasteners: Lawv txhais li cas?

Cov cim ntawm Fasteners: Lawv txhais li cas?

Cov ntsiab lus

Chaw tsim tshuaj paus Head Markings

Txhua tus fasteners tuaj nrog cov cim tshwj xeeb ntawm lawv lub taub hau uas pab txheeb xyuas lawv cov keeb kwm, khoom siv, thiab qhov loj me. Fastener manufacturers yog lub luag hauj lwm los xyuas kom meej meej qhia txog lawv cov khoom rau cov neeg muas zaub. Phau ntawv qhia no muab cov ntaub ntawv tseem ceeb los pab koj nkag siab thiab txhais cov cim uas muaj nyob rau ntawm fasteners.

Chaw tsim tshuaj paus Head Markings

Txhua lub fastener tsim los ntawm ib lub tuam txhab yuav tsum tau dais ib cim cim ntawm nws lub taub hau. Qhov no tsuas yog suav nrog lub tuam txhab lub npe lossis lub npe. Qhov kev coj ua no yuav tsum tau ua los ntawm Txoj Cai Faster Quality Act los txhawb kev ntseeg siab rau cov neeg yuav khoom uas lawv tau yuav los ntawm cov chaw tsim khoom ntseeg siab.

Fastener Standards

Kev sib koom tes thoob ntiaj teb ntawm cov tuam txhab tau coj mus rau kev tsim cov qauv cim rau cov fasteners. Cov qauv no suav nrog cov khoom muaj pes tsawg leeg, qhov ntev, qhov ntev ntev, thiab txheej txheej, muab cov ntaub ntawv qhia ntxaws txog txhua qhov fastener.

Lub koom haum American Society for Mechanical Engineers (ASME) muaj cov ntaub ntawv ASME B1.1, uas qhia txog qhov yuav tsum tau muaj rau kev sib koom ua ke inch ntsia hlau threads. ASME yog dav siv los ua tus qauv los ntawm ntau lub tuam txhab.

Lwm cov qauv qhia cov qib fastener raws li cov khoom siv thiab lub cev. Piv txwv li, SAE J429 txhais cov kev cai rau Qib 2, Qib 5, thiab Qib 8 fasteners. Paub txog qib fastener muab cov ntaub ntawv hais txog nws cov khoom, hardness range, electromechanical zog, thiab seb nws ua raws li tus qauv inch lossis metric.

Piv txwv ntawm SAE J429 Qib 2, Qib 5 thiab Qib 8

Lub Koom Haum ntawm Automotive Engineers (SAE) tau tsim SAE J429 tus qauv rau Cov Khoom Siv Hluav Taws Xob thiab Cov Khoom Siv Hluav Taws Xob rau Cov Khoom Siv Hluav Taws Xob. Cov txheej txheem no dictates txhua yam thiab cov khoom siv rau nti bolts, screws,studs,sem, thiabU-bolts, npog qhov ntev txog li 1-½ "nyob rau hauv txoj kab uas hla. Qhov nce hauv qib fastener qhia tias muaj zog tensile ntau dua, feem ntau qhia los ntawm cov kab radial hla lub taub hau ntawm lub fastener.

Nco ntsoov tias Qib 2 ntawm SAE J429 yuav tsis muaj cov cim. Tsis tas li ntawd, cov cim chaw tsim khoom kuj tuaj yeem hloov kho ntawm lub taub hau kom haum rau qhov sawv cev ntawm nws qib.