Lub tshuab txhuam hniav yog ib hom khoom siv tshuab siv dav hauv kev tsim khoom. Nws lub luag haujlwm tseem ceeb yog ntxuav, txhuam, tshem tawm, lossis ua lwm yam kev kho saum npoo ntawm cov khoom siv siab - txhuam txhuam nrawm.
Nws lub hauv paus ntsiab lus tsim yog ua raws li kev sib cuag ntawm lub cev ntawm cov bristles thiab cov khoom nto. Los ntawm kev sib txhuam, khawb, lossis polishing ntawm cov bristles, qhov zoo ntawm qhov chaw zoo tuaj lossis impurities raug tshem tawm. Cov kev ntsuam xyuas hauv qab no yuav hais txog plaub qhov loj: cov hauv paus ntsiab lus, kev siv cov xwm txheej, cov qauv kev lag luam, thiab kev ceev faj txog kev ua haujlwm.
Lub hauv paus tseem ceeb ntawm lub tshuab txhuam hniav yog cov txhuam hniav (lossis txhuam hniav), nws qhov chaw yog npog nrog cov txheej txheem ntom ntom. Cov khoom siv (xws li nylon, horsehair, steel hlau, thiab lwm yam) thiab cov duab (xws li cov bristles ncaj, nkhaus bristles, wavy bristles, thiab lwm yam) ntawm cov bristles ncaj qha cuam tshuam rau kev ua haujlwm. Thaum lub sijhawm ua haujlwm, cov txhuam txhuam txhuam yog tsav los ntawm lub cev muaj zog kom tig ntawm kev kub ceev (qhov ceev yog feem ntau ntawm 500-3000 rpm, nyob ntawm qhov khoom ua tiav thiab cov txheej txheem yuav tsum tau ua). Cov bristles hu rau saum npoo ntawm cov khoom thiab tsim kev sib txhuam, yog li tshem tawm cov stains, oxide txheej, los yog burrs. Qee lub tshuab txhuam hniav siab kawg kuj tau nruab nrog lub tshuab nqus plua plav pov tseg, uas tuaj yeem tshem tawm cov khib nyiab ib txhij thaum ua haujlwm kom tsis txhob muaj cov pa phem thib ob.
