Thaum cov neeg siv khoom pib hloov kho lawv lub log rau kev ua haujlwm lossis tawm -txoj kev hloov kho, lawv tsom mus rau lub log bolts nce ntau. Lub sijhawm no, tsuas yog hais txog "lub Hoobkas tshwj xeeb" yuav plam lub sijhawm los ua kom pom cov kws tshaj lij. Nkag siab txog cov khoom sib txawv ntawm cov pa roj carbon steel thiab titanium alloys yog lub hauv paus ntawm kev muab cov lus qhia siab kawg -.
Vaj Ntxwv ntawm Roob: Carbon Steel vs. Alloy Steel. Feem ntau ntawm lub Hoobkas bolts yog ua los ntawm carbon steel los yog chromium-molybdenum alloy steel, tshav kub- kho kom ua tiav qib 8.8, 10.9, lossis 12.9. Lawv ua tiav qhov sib npaug zoo ntawm lub zog, toughness, thiab tus nqi. Qib 12.9 yog ib lub qab nthab rau siab - lub zog bolts, muaj lub zog tensile siab heev, tab sis sib raug zoo, nws xav tau qhov tseeb heev installation torque; dhau- zawm tuaj yeem ua rau pob txha tawg yooj yim.
Qhov Kev Xaiv Lub Teeb: Aluminium Alloy. Aluminium alloy bolts muab qhov hnyav txo qhov hnyav thiab feem ntau pom hauv kev sib tw. Txawm li cas los xij, lawv qhov tsis zoo kuj tseem pom meej: cov txiaj ntsig muaj zog tsawg dua cov hlau, xov hnav tsis muaj zog, thiab muaj kev pheej hmoo ntawm kev ntxhov siab corrosion. Nws feem ntau yog tswj hwm nruj me ntsis rau "ib zaug-siv" daim ntawv thov thiab yuav tsum tau siv nrog torque wrenches thiab anti- nplaum compound, thiab nquag kuaj. Peb tsis pom zoo nws rau feem coob ntawm txoj kev tsheb.
Qhov sib npaug ntawm kev ua tau zoo thiab lub teeb yuag: Titanium alloys. Titanium alloys (xws li TC4) yog qhov ntxim nyiam ntawm qhov siab -kawg tom khw. Lawv lub zog sib tw ntawm cov hlau alloy, tab sis lawv qhov hnyav yog nyob ze rau txhuas, thaum tseem muaj kev tiv thaiv corrosion zoo heev. Nws suab zoo meej, tab sis nws los ntawm tus nqi siab. Qhov tseem ceeb tshaj, titanium alloys muaj qhov coefficient tsawg ntawm kev sib txhuam thiab muaj kev nkag siab rau cov xov sib txuas. Tshwj xeeb los tiv thaiv- nplaum nplaum yuav tsum tau siv thaum lub sij hawm installation, thiab tus nqi torque feem ntau yuav tsum yog li ntawm 15-20% qis dua qhov sib npaug steel bolts los tiv thaiv overstretching vim miscalculation ntawm kev sib txhuam.
Cov ntsiab lus tseem ceeb: Kev nyab xeeb yog ib txwm ua raws li qhov tseeb torque. Txawm hais tias qib siab npaum li cas ntawm cov khoom siv ntsia liaj qhov rooj, qhov tseeb torque yog qhov tseeb nkaus xwb los xyuas kom meej txawm tias preload thiab tiv thaiv kom tsis txhob xoob lossis tawg. Thaum kho dua tshiab bolts, calibrated precision torque ciaj ntswj yuav tsum tau upgraded ib txhij, thiab lub torque specifications coj mus rau txawv cov ntaub ntawv yuav tsum nruj me ntsis raws li. Kuv cov lus qhia yog: rau kev txhim kho txoj kev ua tau zoo, siab - zoo 12.9 qib alloy steel bolts yog thawj qhov kev xaiv rau tus nqi- ua tau zoo thiab kev nyab xeeb; rau qhov hnyav hnyav los yog qhov chaw tshwj xeeb (xws li corrosion siab), xav txog titanium alloy kev daws teeb meem rau cov neeg siv khoom, thiab nco ntsoov hais txog qhov tseem ceeb ntawm kev teeb tsa tshwj xeeb thiab kev tshuaj xyuas tsis tu ncua -.