Cov yam ntxwv ntawm Bolts

Cov yam ntxwv tshwj xeeb ntawm cov bolts feem ntau yog tshwm sim hauv lawv cov ntaub ntawv, cov khoom siv kho tshuab, thiab cov cuab yeej kho deg. High- lub zog bolts, xws li qib 12.9 bolts, muaj lub zog tensile txog li 1220 MPa (ISO 898-1 tus qauv), haum rau cov xwm txheej hnyav xws li aerospace. Titanium alloy bolts muaj lub zog tshwj xeeb 30% siab dua cov hlau. Xov dov txoj kev tuaj yeem txhim kho kev qaug zog los ntawm 40% -50% thiab txo qis kev ntxhov siab. Nyob rau hauv cov nqe lus ntawm kev kho deg, Dacromet txheej muaj ib tug corrosion kuj lub sij hawm ntawm 1000 teev (ASTM B117), deb superior rau zoo tib yam zinc plating; npib tsib xee-raws li cov alloys xws li Inconel 718 muaj qhov nkag siab ntawm 80% qis dua stainless hlau ntawm 700 degree, ua rau lawv haum rau qhov chaw kub kub. Anti-loosing designs, xws li nylon ntxig bolts, yuav tsum tau 2 lab lub voj voog hauv kev vibration kuaj ua ntej loosening (DIN 25201). Yav tom ntej tiam sis muaj xws li ntse bolts (preload saib xyuas yuam kev ± 5%), lub teeb yuag magnesium alloy bolts (txo qhov hnyav los ntawm 1.2 kg ib lub tsheb), thiab rov siv dua steel bolts (txo carbon hneev taw los ntawm 70%).