砂(sha)輪磨具行業的(de)(de)最(zui)新資訊，在(zai)后面(mian)很長一段時間(jian)內(nei)，機械(xie)行業將一直作(zuo)為國民經濟支(zhi)柱產業而獲得(de)較高(gao)速發展。磨具行業也將發揮重要作(zuo)用，尤其是電鍍金剛石砂(sha)輪對(dui)機械(xie)行業的(de)(de)貢(gong)獻更(geng)大(da)。

磨具在使用電鍍金剛石砂輪過程中，由于磨粒自身部分碎裂或結合劑斷裂，磨粒從磨具上局部或完全脫落，而磨具工作面上的磨料不斷出現新的切削刃口，或不斷露出新的鋒利磨粒，使磨具在一定時間內能保持切削性能。磨具的這種自銳性，是磨具與一般刀具相比突出的特點。

粒(li)(li)度(du)是(shi)指磨(mo)(mo)(mo)(mo)料(liao)顆粒(li)(li)尺寸(cun)的(de)大小(xiao)。粒(li)(li)度(du)分(fen)為(wei)(wei)磨(mo)(mo)(mo)(mo)粒(li)(li)和微粉兩類(lei)。對于(yu)顆粒(li)(li)尺寸(cun)大外(wai)圓磨(mo)(mo)(mo)(mo)砂輪(lun)于(yu)40μm的(de)磨(mo)(mo)(mo)(mo)料(liao)，稱為(wei)(wei)磨(mo)(mo)(mo)(mo)粒(li)(li)。用篩(shai)選法分(fen)級，粒(li)(li)度(du)號以磨(mo)(mo)(mo)(mo)粒(li)(li)通過(guo)的(de)篩(shai)網上(shang)每英寸(cun)長度(du)內的(de)孔眼數(shu)(shu)來(lai)表(biao)(biao)(biao)(biao)示。如60#的(de)磨(mo)(mo)(mo)(mo)粒(li)(li)表(biao)(biao)(biao)(biao)示其大小(xiao)剛好(hao)能通過(guo)每英寸(cun)長度(du)上(shang)有(you)60孔眼的(de)篩(shai)網。對于(yu)顆粒(li)(li)尺寸(cun)小(xiao)于(yu)40μm的(de)磨(mo)(mo)(mo)(mo)料(liao)，稱為(wei)(wei)微粉。用顯微測(ce)量法分(fen)級，用W和后面(mian)的(de)數(shu)(shu)字表(biao)(biao)(biao)(biao)示粒(li)(li)度(du)號，其W后的(de)數(shu)(shu)值代(dai)表(biao)(biao)(biao)(biao)微粉的(de)實(shi)際(ji)尺寸(cun)。如W20表(biao)(biao)(biao)(biao)示微粉的(de)實(shi)際(ji)尺寸(cun)為(wei)(wei)20μm。

針對我國(guo)機(ji)械行業現(xian)狀，借鑒發(fa)達國(guo)家成熟經驗，我們應主要(yao)開發(fa)：加(jia)(jia)工(gong)(gong)(gong)活塞環用(yong)(yong)金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)磨(mo)(mo)盤；高(gao)精度高(gao)耐磨(mo)(mo)軸承加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)電鍍(du)金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)砂輪(lun)(lun)(包括電鍍(du)陶瓷結合劑)；各種(zhong)(zhong)鑄鐵零部件加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)P金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)刀(dao)具(ju)磨(mo)(mo)具(ju)、珩磨(mo)(mo)工(gong)(gong)(gong)具(ju)；各種(zhong)(zhong)液壓件加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)小孔磨(mo)(mo)頭；轎車窗(chuang)玻(bo)璃、機(ji)械后視鏡等(deng)玻(bo)璃加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)各種(zhong)(zhong)金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)砂輪(lun)(lun)、套鉆(zhan)；塑料、橡膠其它非(fei)金(jin)(jin)屬材(cai)料加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)磨(mo)(mo)輪(lun)(lun)；鋁合金(jin)(jin)件加(jia)(jia)工(gong)(gong)(gong)用(yong)(yong)CPD刀(dao)具(ju)；各種(zhong)(zhong)用(yong)(yong)途金(jin)(jin)剛(gang)(gang)石(shi)(shi)(shi)修整滾輪(lun)(lun)等(deng)等(deng)。