Tus naj npawb ntawm meshes qhia qhov tuab ntawm whetstone. Cov ntau lub meshes, lub finer. Sandpaper kuj tseem cim hauv tib txoj kev. Yog li 800 zoo dua 500. Lub mesh tus naj npawb tau txhais nyob rau hauv physics raws li cov particle qhov loj lossis tuab ntawm cov khoom, thiab cov ntsiab lus dav dav hais txog cov lej ntawm lub qhov hauv qhov screen tsis pub dhau 1 square inch. Qhov loj dua cov naj npawb mesh, cov finer qhov loj me me ntawm cov khoom siv; tus me lub mesh tsawg dua, qhov loj dua cov khoom tawg me me. Lub sieving particle loj yog qhov loj ntawm lub suab sib txuas los ntawm qhov twg cov xau tuaj yeem hla ntawm lub suab sib. Cov lus tshwj xeeb ntawm cov qauv sieves sib txawv ntawm lub teb chaws. Feem ntau Taylor siv tau ntau tus lej ntawm ib nti raws li tus naj npawb sieve, uas yog hu ua mesh.
Piv txwv li, 100 lub suab sib sib xyaw txhais tau hais tias muaj 100 sab sauv qhov ib nti ntawm sab hauv. Cov lej tsis zoo txhais tau tias cov ntxaij tuaj yeem hla dhau ntawm lub mesh, uas yog, qhov seem me me me dua qhov mesh loj; thaum lub zauv zoo txhais tau tias lub mesh tsis tuaj yeem hla lub mesh, uas yog, qhov seem me me yog qhov loj dua li cov ntxaij. Piv txwv li, qhov loj qhov me yog -100 mesh mus rau +200 mesh, uas txhais tau tias cov xaim no tuaj yeem xau dhau 100 mesh tab sis tsis tuaj yeem xau ntawm 200 lub mesh mesh. Thaum kuaj cov xaim ntawm cov mesh loj no, cov lej mesh yuav tsum loj (200) tso rau hauv qab lub vias me me (100), thiab cov seem seem nyob rau hauv lub mesh loj (200) npo yog -100 ~ +200 mesh cov qhov me. Lub mesh ntawm whetstone yog hais txog txoj kab uas hla ntawm cov xoos abrasive hais txog ntawm cov khoom siv whetstone. Qhov txoj kab uas hla ntawm whetstone yog 3000 mesh. Qhov lub cheeb ntawm cov khoom siv abrasive yog li 2 micrometers, thiab lub cheeb ntawm 12500 mesh. Qhov txoj kab uas hla ntawm txoj cai abrasive yog li 1 micrometer. Feem ntau, tus kabmob whetstone tau nce mus txog 8000 Thaum ntsia nws, cov riam polished tuaj pom" daim iav nto" cov nyhuv, thiab cov hniav hniav tuaj yeem siv los ua daim iav. Lub mesh tus naj npawb ntawm whetstone tsis zoo li qub. Thaum cov slurry yog grinded, qhov sib tsoo sib tsoo ntawm whetstone tseem yuav tawg. Raws li kev sib tsoo txuas ntxiv," mesh naj npawb" yuav nce ntxiv, tshwj xeeb tshaj yog rau ntuj grindstones. Qhov no nta.
