Yuav ua li cas los txhawm rau pem hauv ntej thiab sab nraum qab ntawm daim ntawv so huv?
daim ntawv so hauv tsev yog ib daim ntawv nyias nyias, thiab sab nrauv thiab sab nraud tsis zoo los soj ntsuam. Cia wb saib cov ntsiab lus tseem ceeb.
1. Tear method: Tuav txoj hauv kev xeem, ua rau txoj hlua ntawm qhov muag pom, theem nrog lub npoo ntawm qhov kev xeem, thiab rub daim ntawv nrog lwm tus tes, yog li ntawd nws yog torn nyob hauv longitudinal kev coj. Qhov kev qhia ntawm tearing ntawv ces maj mam tig mus rau sab qaum kev, thiab sab ntug ntawm daim ntawv raug muab tua thiab xa daim ntawv. Nyob rau sab nraud, daim ntawv tseem tab torn raws li txoj kev hais saum toj no, thiab daim ntawv plaub hau ntawm ob lub kab tsim kua muag yog sib piv, thiab ib kab yog ntau cuab kev tshaj li lwm yam. Tshwj xeeb tshaj yog nyob rau hauv lub longitudinal kev taw qhia ntawm lub nkhaus, daim ntawv plaub hau yog obviously lub mesh saum npoo. Thaum lub vas pom tau. Cov burrs ntawm cov ntaub ntawv hauv chav hauv tsev yog qhov tseem phem tshaj.
2, intuitive method: Muab ib daim tshev ua ke, saib qhov sib txig ntawm ib sab, lub pob zeb diamond indentation los ntawm daim ntawv nqa tau ntau tus cim tau lub ntse sab. Thaum lub sij hawm yog kab rov tav, tus neeg tua lub teeb ntawm 45 ° angle rau ntawm daim ntawv, thiab kab ntawm pom kuj yog nyob ntawm kaum ntawm 45 ° rau ntawm daim ntawv kom pom lub vas sab hauv daim ntawv. Nws tseem ua tau los soj ntsuam daim ntawv nyob rau hauv ib lub tshuab kuaj kab mob kom paub tias lub ntsej muag mesh.
3. Txheem hom: Hlauv qhov chaw plua plav tawm ntawm cov plua plav nrog dej los yog dilute sodium hydroxide tov, tso dej ntau dhau, muab tso rau ob peb feeb, saib ob sab, yog tias muaj kev sib tw luam tawm, nws yog sab nraud .