Scraping yog ib qho kev ua haujlwm hnyav - txheej txheem hauv kev ua hlau. Tus neeg ua hauj lwm tuav lub scraper kov, muab cov hniav tso rau ntawm qhov chaw ntawm lub workpiece, thiab txhawb nqa lwm qhov kawg ntawm lawv lub plab. Siv lub zog ntawm lawv lub plab, lawv khawb tawm qhov chaw tawm ntawm qhov chaw, ua tiav qee qhov kev sib cuag ntawm cov ntsiab lus ib square centimeter ntawm ob qhov chaw, lossis ua tiav qhov haum. Scraping yog categorized rau hauv ntxhib scraping, nplua scraping, qauv scraping, thiab qhov chaw scraping.
Hluav taws xob scrapers ua haujlwm raws li txoj cai zoo sib xws rau tes scrapers, siv lub cev muaj zog los ua kom muaj siab - zaus vibrations rau scraping. Lub reciprocating stroke tuaj yeem sib txawv sib npaug li ntawm 0-20 hli, nce cov khoom tsim tau ntau dua ob npaug piv rau phau ntawv scraping, thiab txhim kho qhov zoo (ua tiav qib 1 nto tiav). Tus neeg teb xov tooj tsuas yog yuav tsum nqa lub cuab yeej thiab hloov mus rau cov lus tsa suab, txo qis kev siv zog ntau. Tsis tas li ntawd, cov hniav sib txawv thiab kev kho mob stroke tuaj yeem tsim ntau yam qauv.
