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src="static/image/filetype/unknown.gif" border="0" class="vm" alt="" /> 抛光粉测试计划表.xls</h1> </div> <div class="bm_c xld"> <div class="attbox_right_ad"> </div> <div class="attbox_left"> <ul> <li>打开方式: Microsoft Excel 2003</li> <li>资料大小: 15 KB</li> <li>下载次数: 24</li> <li>上传会员: <a href="attachcenter-list.html?uid=62761" target="_blank" style="color:#FF9900">chengshaoming</a></li> <li>上传时间: 2007-12-01</li> <li>本站网址: <a href="http://forum.oecr.com/">forum.oecr.com</a></li> <li><a href="http://bbs.oecr.com/thread-13924-1-1.html" target="_blank">查看资料所在的主题</a></li> <li><a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=MjEwNzJ8YjExOWJjYWV8MTc2NjA3ODIxNHwwfDA%3D" target="_blank" style="color:#FF9900">下载资料 </a></li> </ul> </div> <DIV style="CLEAR: both"></DIV> <b>欢迎下载本站资料，下载前请先登录您的社区账号。</b></div> </div> <DIV style="CLEAR: both"></DIV> <div class="bm cl" style="padding:5px;"> <p><button type="submit" class="pn vm" onclick="setCopy('http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=21072', '链接已经复制到剪贴板');" type="submit"> <em>复制链接推荐给好友</em></button> <input type="text" class="px vm" onclick="this.select();setCopy(this.value, '链接已经复制到剪贴板');" value="http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=21072" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>抛光中如何控制冷却液的PH值？？:</b><div class="postmsg">如题！<br /> <br /> 我是上饶凤凰光学的一个实习生啊，以后请大家照顾了</div> <div class="postmsg">添加化学药品呗！<br /> NaOH、草酸、柠檬酸等</div> <div class="postmsg">加了以后，怎么才知道什么时候它又恢复了碱性呢？？</div> <div class="postmsg">有可能是因为你用的抛光粉本身呈碱性，所以加了酸性物质后过一些时候又呈现碱性</div> <div class="postmsg">測它的PH值不就行了！ 老兄 我是江西上饒的 很高興認識你。</div> <div class="postmsg">不一定的，因为抛光粉不同其本身配出来的PH值就会不同。<br /> 上饶的凤凰光学三分厂我认识一个人，不知你认识否</div> <div class="postmsg">有一种PW型抛光液稳定剂，用起来效果不错。</div> <div class="postmsg">加了酸性物质以后PH值可能得到控制，但是在循环用过一段时间，因为玻璃中的化学成分在冷却液中溶解，又可能使PH升高，所以我想知道的是加入酸性物质后，在后面一段时间如何控制及观察，该冷却液更换周期<br /> <br /> 楼上兄弟你说的稳定剂是长春光机学院研制的那个吗？</div> <div class="postmsg">请问现在用什么来检测PH值比较好。谢谢。</div> <div class="postmsg">每一种抛光粉都有其本身的PH值，配好后的PH值都是不一样的，且视其浓度的改变而改变，加化学药剂不是根本的办法，关键是找到合适的抛光粉和其浓度。</div> <div class="postmsg">所有的抛光粉内都必须加入酸性物质来中和吗?<br /> 好象没有必要吗?</div> <div class="postmsg"><div class="quote"><blockquote><strong>下面引用由<u>晴天有雾</u>在 <i>2003/07/23 11:38am</i> 发表的内容：</strong><br /> 所有的抛光粉内都必须加入酸性物质来中和吗?<br /> 好象没有必要吗?</blockquote></div>当然不是了。<br /> 不过大部分玻璃在弱酸性的抛光液中可以比较顺利地达到比较好的表面质量。晶体和一些其他的玻璃则有不同的抛光条件。<br /> </div> <div class="postmsg">同意楼上的观点，调节PH值不是根本方法，关键在于选择合适的抛光液，因为有些抛光液，改变PH值后，会出现沉淀现象， 而影响到抛光效果。</div> <div class="postmsg">有一个提议，大家参考一下：是不是能够把自己接触到的抛光粉的型号和生产厂家与该抛光粉的PH值做一个对照表，大家一起做，这样在以后的工作中会非常有用 </div> <div class="postmsg">PW是试抛光剂 悬浮的吧 他有别的性质吗 那产品 具体我还没看<br /> <br /> 如果有人用过 请把 用过后的情况说一下好吗？？<br /> <br /> </div> <div class="postmsg">那要看抛什么材料，有些耐酸和碱性差材料要控制PH值。</div> <div class="postmsg">PH值的数剧是可以用PH值计和PH值试纸测试的.但抛光液的PH值上升到9.9时可以用冰乙酸调节.但只能管一个小时后就会以每小时1.0的速度上升.</div> <div class="postmsg">请问有什么办法能使抛光液的PH值稳定不变?因为抛光液经过抛光一段时间后温度会上升.PH值也会上升.我是做光学玻璃抛光的,知道玻璃是碱性的,一段时间后PH值是会上升的.但有什么办法能控制PH值不会上升或上升慢一点?</div> <div class="postmsg">我想知道光学玻璃在抛光过程中如何能控制PH值会上升或上升慢?各位行家们.请多支持.谢谢了!</div> <div class="postmsg">因为玻璃呈碱性,抛光时PH值会快速上升.抛光粉的溶液也会因机台发热而跟着加高温度,有试加入冰乙酸进行缓冲,刚加下去时PH值下降得很快,不过一小时后PH值会以1.0的速度上升,请问有什么办法能使用PH值稳定或者上升缓慢?另外是抛光溶液的比重足够时是否只有加水才能下降温度?当然不能说停机等溶液冷却后才做啊!请同行的高手们不吝指教,谢谢.!!!!!!</div> <div class="postmsg">有些抛光粉本身是中性的，而且在里面含有添加剂，可以控制抛光过程的pH值。还有些抛光粉是偏碱性的，需要在抛光的过程中不断的加入酸来控制pH值。中性抛光粉较碱性的贵些。具体要看你的要求了。<img src="static/image/smiley/default/em27.gif" smilieid="56" border="0" alt="" /></div> <div class="postmsg">对于一般的玻璃，在加工过程中，其抛光液的PH值会有一定的上升趋势，这样一方面会降低抛光效率（一般抛光在6-7内抛光效率最好），另一方面对于有些玻璃材质不稳定的，PH值上升，可以会导致镜片表面出现白点等腐蚀现象，所以对于一些较软材质的玻璃加工，我们就需要对抛光PH进行控制，一些加工厂商，会通过加入ZnNO3,柠檬酸等之类的来调节PH值，控制其上升。在这里要提到的，我们加入这些添加剂不是为了在抛光中，PH上升到很高的时候来降低PH，而是为了把PH稳定控制在某一范围，所以加入的时间也应该比较有讲究的。<br /> 本人也是新手，这也只是自己的一点拙见，还请高手们多多指点！</div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> 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