Feem ntau, cov ntsia hlau feem ntau muab faib ua ob pawg: hlau thiab tsis yog{0}}hlau, nrog rau cov khoom siv hlau uas muaj zog thiab siv dav hauv ntau yam xws li tshuab, kev tsim kho, thiab hluav taws xob.
Ntawm cov khoom siv hlau, feem ntau muaj xws li carbon steel, stainless hlau, hlau alloy, tooj liab thiab tooj liab alloys, thiab txhuas alloys. Carbon steel screws yog siv dav hauv kev sib txuas ntawm cov khoom siv sib txuas, xws li rooj tog thiab khoom siv, vim lawv cov nqi qis thiab kev ua haujlwm zoo. Lawv qib zog feem ntau yog cais los ntawm cov txheej txheem kho cua sov, xws li qib 4.8, qib 8.8, thiab lwm yam, nrog cov lej siab dua qhia tias muaj zog dua.
Stainless hlau screws yog dav siv nyob rau hauv cov teb uas muaj corrosion kuj yuav tsum tau, xws li chemical engineering, marine engineering, thiab zaub mov ua. Cov khoom siv hlau tsis zoo xws li 304 thiab 316, nrog 316 stainless hlau muab kev tiv thaiv corrosion zoo dua. Alloy steel screws muaj lawv lub zog, hardness, los yog corrosion kuj txhim kho los ntawm kev ntxiv lwm yam alloying ntsiab, xws li chromium, molybdenum, thiab npib tsib xee, ua rau lawv haum rau cov kev siv uas yuav tsum tau kev ua tau zoo dua.
Tooj thiab tooj liab alloy screws muaj cov ntawv tshwj xeeb hauv electronics, hluav taws xob engineering, thiab kev sib txuas lus vim lawv cov hluav taws xob zoo thiab thermal conductivity thiab corrosion kuj.
Aluminium alloy screws yog nyiam nyob rau hauv aerospace, automotive manufacturing, thiab lwm yam kev lag luam vim lawv lub teeb yuag thiab siab zog. Tsis tas li ntawd, cov ntsia hlau ua los ntawm cov ntaub ntawv tshwj xeeb, xws li titanium alloy screws, tuav txoj haujlwm tsis tuaj yeem hloov tau hauv siab -kawg khoom tsim vim lawv lub zog siab heev thiab corrosion kuj.
Thaum xaiv cov khoom siv ntsia hlau, nws yuav tsum ua tib zoo xav txog yam xws li ib puag ncig kev ua haujlwm tshwj xeeb, kev xav tau ntawm kev thauj khoom, thiab cov nqi siv nyiaj los xyuas kom meej tias cov ntsia hlau ua tau raws li qhov yuav tsum tau siv.
