Qhov kev xaiv ntawm cov tawv tawv yog nyob ntawm feem ntau ntawm cov khoom siv ua av, qhov sib tsoo cov txiaj ntsig thiab qhov zoo ntawm cov tshuab machined. Hardness hais txog qhov nyuaj ntawm lub log abrasive ntog tawm hauv qhov kev txiav txim ntawm sab nraud quab yuam. Txhawm rau kom ua tau raws li qhov yuav tsum ua haujlwm ntawm cov khoom sib txawv ntawm cov khoom sib tsoo, sib tsoo lub log tau muab faib ua qib sib txawv hardness. Cov hniav sib tsoo tau xaiv nyuaj dhau lawm, cov pob zeb tsis sib xyaw abrasive tsis yooj yim kom poob tawm, lub sib tsoo lub cav yog yooj yim thaiv, qhov sib tsoo kub tau nce, qhov chaw ua haujlwm yog yooj yim hlawv, qhov sib tsoo efficiency yog tsawg, thiab qhov zoo ntawm cov nplaim ntawm cov haujlwm workpiece yog cuam tshuam; lub sib tsoo log yog xaiv tau muag muag dhau, thiab cov sib tsoo cov nplej no kuj tau tawm thaum nws tseem ntse. Ua kom nce hnav ntawm kev sib tsoo, yooj yim plam qhov tseeb ntawm kev ntsuas thiab muaj kev cuam tshuam qhov tseeb ntawm qhov chaw ua haujlwm. Yog li ntawd, qhov kev xaiv ntawm cov tawv tawv ntawm kev sib tsoo cov log yuav tsum tsim nyog. Nws yuav tsum raug txiav txim siab raws li qhov chaw sib tiv tauj ntawm kev sib tsoo lub ntsej muag thiab cov khoom sib tsoo, hom duab ntawm qhov chaw ua haujlwm, txoj kev sib tsoo, hom txias, hom kev sib koom tes ntawm tus neeg sawv cev ntawm cov sib tsoo lub log thiab lwm yam.
Kev sib tsoo log hardness xaiv txoj cai: thaum sib tsoo cov khoom muag muag, xaiv lub zog sib tsoo lub log, thaum sib tsoo cov khoom tawv, xaiv cov khoom sib tsoo muag; thaum sib tsoo mos thiab tawv tsis-siv cov hlau, tawv yuav tsum xaiv softer; sib tsoo thermal conductivity tsis zoo Cov khoom siv yuav tsum tau xaiv raws li softer sib tsoo lub log; thaum lub ntsej muag sib tsoo lub ntsej muag muaj ntau dua li qhov kev sib tsoo, qhov nyuaj ntawm kev sib tsoo lub log yuav tsum softer; raws li qhov sib tsoo ntawm cov hniav sib txawv, lub hardness ntawm resin sib tsoo lub log yog 1 ~ 2 me dua li qhov ntawm cov pob zeb khi sib tsoo log. Thaum lub sib tsoo log tig ntawm lub siab nrawm, lub hardness ntawm kev sib tsoo lub log tuaj yeem muag los ntawm 1 ~ 2. Qhov sib tsoo nrog cov roj txias yog 1 ~ 2 qis dua qhov nyuaj ntawm qhov sib tsoo lub log. Qhov kev xaiv ntawm phau ntawv yuav tsum tau txiav txim siab ntawm txoj kev sib tsoo, kev siv ceev thiab kev ua tiav ntawm npoo.
