Ngati zomwe tatchulazi zotsekereza zomwe zimakhudza kuthamanga zilipo, kuthamanga kwachangu kudzachepetsedwa. Choncho, sikokwanira kugwiritsa ntchito wothandizila kuti azindikire kusintha kwa kayendedwe ka kayendedwe kake poyang'ana pamagetsi. The ndende ndi yofunika index mugudumu loperaukadaulo wa superhard abrasive. Makampani nthawi zambiri samamvetsetsa kuchuluka kwa 100 ngati 100%. M'malo mwake, tanthauzo la ndende ya 100 ndikuti pali ma carat 72 abrasive mu voliyumu ya 1 kiyubiki inchi. Chifukwa chake, kuchuluka kwa 50 kumatanthawuza ma carat 36 abrasive pa kiyubiki inchi.
Pali mitundu yambiri yaabrasive mbewu saizi, ndi abrasive ndi makulidwe osiyanasiyana a tirigu akhoza kukhala ndi ndende yofanana. Tsopano tikufanizira miyeso iwiri ya abrasive ndi ndende yofanana ya 75. Imodzi ndi kukula kwa tirigu 60 (American standard, yomweyi pansipa), ndipo ina ndi 200 size size. Zowonongeka pa inchi ya cubic ndi 54 carats. Kwa 60 tirigu abrasive kukula, pali 6900 mbewu pa carat, pamene 200 njere abrasive abrasive; pali mbewu 262000 pa carat.
Chifukwa chake, pali 372600mbewu za abrasivepa inchi kiyubiki wa gudumu kugaya 60 njere abrasive, ndi 14148000 abrasive njere kwa 200 njere abrasive. Osiyana abrasive tinthu kukula zikutanthauza kuti chiwerengero cha zabwino (kumanzere) particles ndi kuposa coarse particles pa ndende yomweyo.
Kungoganiza kuti particles abrasive ndi uniformly anagawira gudumu akupera, chiwerengero cha abrasive particles pa kiyubiki inchi akhoza analandira ndi kiyubiki kugawa chiwerengero cha abrasive particles pa kiyubiki inchi. Pakukula kwa mbewu 60, ndi mbewu 72 pa inchi, pomwe pakukula kwa mbewu 200, ndi mbewu 242 pa inchi. Kufanana kwa ziwerengero zomwe zili pamwambazi ndi kusiyana kwa njere za abrasive. Pakukula kwa mbewu 60, motalikirana ndi 0.014”, ndipo pakukula kwambewu 200, motalikirana ndi 0.004”.
Ngati kutalika kwa arc pokupera ndi 0.013 ", ma abrasive a 60 grit akupera gudumu ndiatali kuposa iwo, kotero nthawi zina palibe abrasive ntchito pa kudula arc, pamene 200 grit gudumu akupera, matayala abrasive ndi 0.004 " . Chifukwa chake, mbewu zosachepera zitatu zikugwira ntchito podula. Kuchokera kufananiza pamwambapa, lamulo lodziwika bwino limakokedwa, ndiye kuti, posankha gudumu lopera, ndikofunikira kuwonetsetsa kuti 4 ~ 10 mbewu za abrasive zikugwira ntchito kutalika kwa arc.
Nthawi yotumiza: Feb-20-2023