Muaj ntau lub npe rau lub bolts. Txhua tus neeg lub npe kuj sib txawv. Qee cov neeg hu xov tooj rau lawv. Qee cov neeg hu lawv cov tes rau ntsia hlau. Qee cov neeg hu lawv cov txheej txheem, thiab qee cov neeg hu lawv cov txuas ntxiv. Txawm hais tias muaj ntau lub npe, lub ntsiab yog tib yam. Lawv yog cov xaum. Bolts yog ib lub sijhawm rau cov tuav khi. Lub hauv paus ntsiab lus yog siv lub tswv yim ntawm physics thiab kev ua lej ntawm qhov khoom siv qhov khoom tig thiab txhuam, thiab maj mam txhim kho cov cuab yeej ntawm cov khoom siv zoo. Bolts yog indispensable nyob rau hauv txhua txhua hnub lub neej thiab industrial raug. Bolts kuj hu ua txhuv nplej. Siv cov ntsia hlau ntsia ntau heev. Tsuas pub siv cov khoom siv: cov khoom hluav taws xob, cov khoom lag luam, cov khoom siv hluav taws xob, khoom siv hluav taws xob, machinery thiab khoom siv hluav taws xob. Ships, tsheb, hydraulic engineering, thiab txawm tias hem xyaum ua haujlwm yog qhov tseem ceeb rau bolt. Xijpeem, muaj ntau qhov chaw tau siv qhov sib si. Cov khoom tshwj xeeb xws li cov tho kev siv saum toj no. DVD, yees, tsom iav, watches, hluav taws xob thiab lwm yam micro-bolts siv; TV, khoom siv hluav taws xob, seev suab paj nruag, rooj tog zaum, thiab lwm yam. Feem ntau lem; xws li kev tsim ua vaj tse, kev tsim kho, kev kho tsheb, siv loj bolts, ceev; kev siv tsheb thauj mus los, aircraft, tsheb ciav hlau, tsheb Etc. yog siv rau qhov loj bolts. Bolts muaj lub hom phiaj tseem ceeb hauv kev lag luam. Tsuav yog muaj kev lag luam hauv lub ntiaj teb, txoj haujlwm ntawm bolts yeej ib txwm tseem ceeb.
Bolt nrhiav kom tau
Ntsuas phom pluaj yog muab faib ua ob hom: phau ntawv thiab tshuab. Kev ua haujlwm yog qhov tseem ceeb tshaj plaws thiab feem ntau yog siv txoj kev paub tseeb. Yuav kom txo cov khoom ntawm cov khoom tsis raug, cov neeg ua haujlwm muag khoom tsim muaj kev soj ntsuam los ntawm kev siv cov khoom ntim khoom los yog xa cov khoom siv kom raug tshem tawm (tsis zoo xws li kev raug mob hniav, khoom sib xyaw, xeb, thiab lwm yam).
Lwm txoj kev yog lub cuab yeej tsis zoo ntawm lub tshuab, feem ntau cov khoom sib nqus particle tshawb xyuas.
Kev sib txuam qhov tshwj xeeb yog qhov siv ntawm kev sib txuas ntawm qhov chaw ntom ntom ntawm thaj chaw ntawm lub pluaj thiab lub sib nqus hmoov hlau, thiab qhov sib txuas ntawm cov hlau tawm ntawm cov hlau tsis zoo ntawm qhov ntsia hlau (xws li tawg, slag inclusion, mixing , thiab lwm yam). Cov ntaub ntawv no tsis ua mus ntxiv tom qab magnetization. Lub sib nqus ntawm thaj chaw ntawm qhov chaw yuav ua rau muaj kev hloov pauv, ua ib qho chaw ntawm cov hluav taws xob ntws ntawm qhov ntom nti ntawm qhov chaw ua hauj lwm, uas yog siv lub tshuab ua kom muaj hlau nplaum tsim ib lub tshuab ua kom muaj hlau nplaum ntawm lub tsev kho mob-lub sib nqus kos, thiab nyob rau hauv cov teeb meem kom pom kev zoo, qhov chaw thiab cov duab ntawm qhov kho yuav tsum tau qhia. Qhov cia txav ntawm cov khoom sib nqus no yog pom thiab piav qhia, thiab lub hom phiaj ntawm cov khoom tsis txaus siab tau raug ua tiav.