Kev ceev faj rau kev siv Rockwell hardness tester

(1) Tsis tu ncua txhaj me me ntawm cov roj cav rau hauv qhov chaw sib cuag ntawm cov ntsia hlau thiab lub log.
(2) Ua ntej siv lub hardness tester, sab saum toj ntawm cov ntsia hlau thiab saum npoo ntawm lub workbench yuav tsum tau wiped huv si.
(3) Tsis tu ncua xyuas qhov tseeb ntawm hardness tester nrog ib tug qauv hardness thaiv. Kev ntsuam xyuas ntawm qhov chaw txhawb nqa tsis raug tso cai.
(4) Thaum muaj burrs rau ntawm qhov chaw txhawb nqa ntawm tus qauv nyuaj, nws yuav tsum tau polished nrog whetstone. Thaum kuaj ntawm qhov chaw sib txawv, lub zog thaiv yuav tsum raug rub rau ntawm qhov chaw ua haujlwm thiab yuav tsum tsis txhob muab tshem tawm ntawm qhov chaw ua haujlwm.