Kev nqa cov saw yog ib qho tseem ceeb ntawm kev siv tsheb thauj khoom thiab thauj-thauj tus kheej, yog li kom ntseeg tau nws txoj kev ncaj ncees tseem tuaj yeem lav cov haujlwm ntawm kev ua haujlwm, tab sis hauv kev ua neej nyob niaj hnub, cov saw yuav xeb. Dab tsi yog qhov tseeb?
1. Lub chaw ua haujlwm tsis zoo.
Thaum lub sij hawm siv, saum npoo yuav tsuas yog xeb nrog cov tshuaj tiv thaiv corrosive. Yog tias nws pom tias lub sijhawm tsis tu ncua, qhov saum npoo ntawm cov saw yuav corroded. Hauv cov xwm txheej loj, cov saw hlau siv tsis tau txhua;
2. Kev ua haujlwm tu thiab tu tsev tsis nyob hauv qhov chaw.
Tom qab siv tas, txoj haujlwm tu tsev tsis tau nqa tawm hauv lub sijhawm, yog li cov khoom siv txawv teb chaws nthuav tawm saum npoo yuav khaws ntau thiab ntau dua, thiab xeb yuav tshwm sim tom qab lub sijhawm ntev;
3. Qhov saum npoo ntawm cov saw tsis muaj lubricated.
Tom qab cov saw hlau tau tswj, cov dej ntws nyob rau saum npoo yuav tsum tau muab so hauv lub sijhawm, thiab tiv thaiv xeb kua roj thiab nplawm roj yuav tsum thov kom ua cov yeeb yaj kiab tiv thaiv nyob rau saum npoo ntawm cov saw hlau kom tiv thaiv nws los ntawm xeb.
