推荐回答(5个)
0.38、0.35mm笔芯的区别是:
1、两种笔芯粗细不同,0.35的比0.38的细。
2、从写字流畅度来讲,0.35笔芯比0.38笔芯阻力更大。
笔芯的质量好坏取决于笔尖所用材料,球珠材料有碳化钨、不锈钢、陶瓷的。目前综合性能比较好的是碳化钨的;球座材料有镍白铜、不锈钢、黄铜的。

扩展资料:
圆珠笔芯使用注意事项
1、角度过小
易磨损球座的收口处(球座材料为镍铂铜或不锈钢,较球珠易磨损得多),如长时接触被写物,即使被写物是纸张,球座也经不起磨损,如此会造成球珠脱落。
2、正确角度
圆珠笔书写时,角度控制在55°至70°是最为理想的,这时,仅是球珠与纸接触(球珠很硬、碳化钨或陶瓷,很不易磨损),收口处不接触书写物,从而保证圆珠笔在良好的书写状态下延长使用寿命。
3、垫纸过厚
书写时,垫纸过厚,笔头收口处接触到纸,易磨损脱珠,建议:0.4的球珠不能复写;0.5的球珠最多复写1张,不宜再多;0.7的球珠最多复写3张至4张,不宜再多,复写时最好75°书写。
参考资料:百度百科-圆珠笔
0.38的笔芯和0.35的笔芯区别:
1、两种笔芯粗细不同,0.35的比0.38的细。
2、从写字流畅度来讲,0.35笔芯比0.38笔芯阻力更大。
3、如果是国产的笔芯,0.35笔芯都是全针管的,0.38笔芯有全针管也有普通子弹头的。
0.35或是0.38都指是笔尖上圆珠的直径(单位是毫米),笔尖是个小钢珠,把小钢珠嵌入一个小圆柱体型铜制的碗内,后连接装有油墨的塑料管,油墨随钢珠转动由四周流下。笔尖的圆珠需要采用坚硬耐磨的材料制成,最常用的材料是不锈钢和碳化钨,后者的质量更好。
毫米数越小笔越细,在考试的时候,要使用0.5的考试用笔。笔芯的分类有全针管,半针管,子弹头,葫芦头。

扩展资料
选购笔的要点:
1、高级圆珠笔在笔套上均有明显的商标牌号和型号标志,在笔芯的尾部也有明显的牌号、生产日期和“DA”标志标记(“DA” 标记即档案两字的汉语拼音第一个字母的组合)。
2、必须配用金属油管的笔芯,笔头球珠必须采用硬质合金——碳化钨球珠,书写性能优于一般圆珠笔,灌注在笔芯内的油墨必须采用定点生产的424 纯蓝油墨和322黑油墨。
3、假冒伪劣商品,笔芯内灌注的油墨不是国家档案局认可的档案油墨,在笔芯上没有“DA”标记,也没有商标、牌号、型号、厂名、产地,有的是用国外走私进来的无牌笔芯,经组装冒充进口高级圆珠笔。
参考资料: 百度百科-圆珠笔
参考资料: 百度百科-笔芯
35的相对来说比较细。每一款自动铅笔都有固定配套的笔芯规格,在笔的上面都有写。35的笔放不进去38的笔芯,38的笔放35的芯,写字不稳,笔芯总晃。35的笔芯配35的笔完全不用担心会轻易断,都是配套贴合的。不要贪小便宜买一块钱好几管的笔芯,质量才是硬道理。
0.38的笔芯比0.35的笔芯要粗,笔芯质量也有好坏,买好一点的,笔芯是和笔配套的,笔的规格是多粗的,就要买多粗的笔芯。
正常情况0.35的细,但是差别不大;特殊情况,0.35油封较少,流速较快,那将会比0.38粗。
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