发布时间：2021-03-10 14:48:16 浏览次数：次
标准试验筛主要用于各试验室、化验室、物品筛选、筛分、级配等检验部门对颗粒状、粉状物料的粒度结构、液体类固体物含量及杂物量的筛分、过滤、检测。下面小编就为您介绍一下标准试验筛的网孔有几种类型？
应用广泛网孔——2.36mm到0.02mm的方孔
金属丝编织网(wang)(wang)(wang)的成本低(di)，柔韧(ren)性好，但相对精度(du)较低(di)（允许有(you)大网(wang)(wang)(wang)孔(kong)），网(wang)(wang)(wang)孔(kong)可能(neng)变形，可以通过扩孔(kong)和缩孔(kong)来(lai)控制网(wang)(wang)(wang)孔(kong)精度(du)，及电化学(xue)方法使(shi)孔(kong)固定，一般需要(yao)具有(you)高精度(du)筛网(wang)(wang)(wang)生产(chan)能(neng)力的厂家(jia)才能(neng)保证大量生产(chan)，应用行业多(duo)是金刚石行业特别是出口厂家(jia)要(yao)求是标准的负差值，因为国(guo)外余中国(guo)差半个号，同时基本粒占90%以上(shang)。
主要应用于大网孔——0.2mm到几百mm的圆孔和方孔
冲孔(kong)(kong)(kong)(kong)(kong)板筛网(wang)是指(zhi)运用冲床在待加工板中冲出(chu)目标图形的筛网(wang)，材质有不(bu)锈钢(gang)、铝板、冷热钢(gang)板、铜板、PVC板膜等多种(zhong)，冲孔(kong)(kong)(kong)(kong)(kong)板筛网(wang)的网(wang)孔(kong)(kong)(kong)(kong)(kong)精度均匀不(bu)易变(bian)形，主要用于大颗粒的检测，孔(kong)(kong)(kong)(kong)(kong)型有长孔(kong)(kong)(kong)(kong)(kong)、圆孔(kong)(kong)(kong)(kong)(kong)、方孔(kong)(kong)(kong)(kong)(kong)、三角孔(kong)(kong)(kong)(kong)(kong)、鱼(yu)鳞孔(kong)(kong)(kong)(kong)(kong)、桥式孔(kong)(kong)(kong)(kong)(kong)、菱形孔(kong)(kong)(kong)(kong)(kong)、五(wu)角孔(kong)(kong)(kong)(kong)(kong)、六角孔(kong)(kong)(kong)(kong)(kong)、八字(zi)(zi)孔(kong)(kong)(kong)(kong)(kong)、十(shi)字(zi)(zi)孔(kong)(kong)(kong)(kong)(kong)、指(zhi)甲孔(kong)(kong)(kong)(kong)(kong)、梅花孔(kong)(kong)(kong)(kong)(kong)、人字(zi)(zi)孔(kong)(kong)(kong)(kong)(kong)、工字(zi)(zi)孔(kong)(kong)(kong)(kong)(kong)及其它异形孔(kong)(kong)(kong)(kong)(kong)等多种(zhong)。
主要用于高精度筛分——能做到每个网孔都在平均误差范围内
电成(cheng)(cheng)型筛网采用(yong)电化学方法制造，精(jing)度(du)(du)高(gao)，理论上(shang)精(jing)度(du)(du)可(ke)以到一微(wei)米，特(te)点是刚性结构的(de)(de)筛孔不会变形。使用(yong)电成(cheng)(cheng)型过滤(lv)材料的(de)(de)粒(li)(li)径(jing)分布明显变窄(zhai)，与编织线网过滤(lv)材料相(xiang)比，要求更清洁和更少的(de)(de)维护，允许更长的(de)(de)过滤(lv)时(shi)间和使用(yong)寿(shou)命(ming)以大(da)幅提高(gao)生产效(xiao)率(lv)。在(zai)高(gao)精(jing)度(du)(du)的(de)(de)实验室粒(li)(li)度(du)(du)检测场景有(you)着十分广泛的(de)(de)应用(yong)。
以上就是(shi)小编为(wei)您(nin)介绍的(de)标(biao)准(zhun)试(shi)(shi)验(yan)筛(shai)(shai)的(de)三(san)种网孔类型(xing)，该系列标(biao)准(zhun)试(shi)(shi)验(yan)筛(shai)(shai)都具有噪音低、标(biao)准(zhun)试(shi)(shi)验(yan)筛(shai)(shai)体，筛(shai)(shai)、滤样品效率(lv)、精度高等优点(dian)，广泛用于冶(ye)金、粉粒、化工、医药、建材、地(di)质、国防(fang)等部门的(de)科(ke)研生产、试(shi)(shi)验(yan)室(shi)、质检(jian)室(shi)。
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