Bolt Stress Hom Thiab Qib Lub ntsiab lus

Bolts tuaj nyob rau hauv ob hom: Ordinary thiab remed. Ordinary bolts feem ntau dais axial rog, tab sis kuj tuaj yeem tiv taus qhov xav tau tsawg dua rau sab nraud. Reamed bolts, uas yuav tsum tau muaj qhov tshwj xeeb qhov loj, yog siv thaum raug rau sab nraud.

Raws li cov qauv tsim, carbon steel thiab alloy steel bolts tau muab faib ua ntau tshaj 10 qib kev ua tau zoo, suav nrog 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, thiab 12.9. Bolts ntawm qib 8.8 thiab siab dua yog ua los ntawm qis- carbon alloy steel lossis nruab nrab- carbon steel thiab tau txais kev kho cua sov (quenching thiab tempering), feem ntau hu ua siab - lub zog bolts. Tus so yog feem ntau hu ua bolts zoo tib yam. Lub bolt kev ua tau zoo qib kev xaiv muaj ob feem: lub nominal tensile lub zog thiab cov yield zog piv ntawm cov khoom siv ntsia liaj qhov rooj. Stainless hlau bolts raug cais raws li cov hlau kev kawm qib: A1-50, A1-70, A1-80, A2-50, A2-70, A2-80, A3-50, A3-70, A3-80, A4-50, A4-70, A4-80, A5-500, A- C1-70, C1-110, C4-50, C4-70, C3-80, F1-45, thiab F1-60. Thawj tsab ntawv thiab tus lej sawv cev rau pawg stainless hlau, thiab tus lej thib ob thiab thib peb sawv cev rau 1/10 ntawm lub zog tensile.