[原创]PCB十问
<p>各位大侠！</p><p> 小第入行不就有太多的问提要问各位大哥们！！！</p><p>希望各位知道的能帮帮忙。</p><p>1。现在的微蚀体系有过硫酸钠和硫酸，H2O2和H2SO4，过硫酸铵和硫酸。</p><p>请问：他们之间有什么区别吗？什么情况应当用什么好？为什么？</p><p>2。电镀光剂的添加按千安每小时，请问是什么意思啊？具体应当怎么加？</p><p>3。每条线为什么都要微蚀？微蚀对做板有什么影响？</p><p>4.电镀为什么在一定时候要挂电解片？挂电解片有什么作用？</p><p>5.像沉镍金和沉铜为什么做板之前要挂拖缸板？拖缸板对做板有什么影响？对拖缸板又有什么要求？</p><p>6.是不是镀铜，镀镍，镀锡的电解片可以混用？电解片一般是什么材料做成的？</p><p>7.电镀镀层厚度计算公式有用：电流密度*时间*0.217，有用电化当量*电流密度*电流效率*电流时间/60*物质密度，</p><p>又有用电化当量*电流密度*电流效率*电流时间/100*物质密度。请问具体该用哪个？为什么？</p><p>8.我司电镀铜溶液为纯硫酸，硫酸铜，铜粒，光剂（罗门哈斯）的，请问电流效率是多少啊？</p><p>每平方尺的电流密度又应为多少啊？</p><p>9.我看很多资料上都说电镀电流应为1.5——2.5安每平方分米，但我司的为什么为20安每平方英尺啊？</p><p>10.什么叫深镀，什么叫渗镀，什么叫独立线，什么叫独立孔？？？</p><p>麻烦大家知道的说一下，知道一个就说一个》</p><p>谢谢！！！！</p><p></p> <p>1、一般都用第一种,成本稍比后两种高一点,但其稳定性好,过硫酸根残留物少.</p><p>2、安培小时就等于是：电流（A)<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">×时间(H)请注意一般电镀以分钟记,只需转换为小时就可以了.添加时就按所算出结果等于1000AH时，就加一定量的光剂。</font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">3、微蚀的目的就是粗化铜面提高结合力，还可以去氧化。</font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">4、挂电解片的目的是拖走有机物和铜粉。意味着保养，清洁一下镀液。</font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">5、拖缸的目的是提高药水的活性，而且拖缸板一般为没有铜皮的纤维板，数量为一个挂篮之本厂最大尺寸板。</font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">6、不能混用，因为各药水要互相污染，严格的说为一次性，拖缸板材料最好是用瓦楞形铜板。</font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">7、用第一个公式就可以，也可用我这个：镀铜电流密度（ASF)=镀铜厚度(mil)<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">×1140<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">÷</span>电镀时间(分钟).</font></span></font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">8、罗门哈斯的电流效率你找供应商资料就可以了，应该为15~30asf.</span></font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">9、对于电流密度的选取是根据实际情况而定，一般也按15~28asf，如果大一点可能导致烧板，这和镀液有很大关系。</span></font></span></p><p><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3"><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font face="黑体"><font size="3">10、深镀能力简称T.P值,也就是说一个孔的镀铜药水贯穿能力,测试为一个孔的</font><font size="5">面(除底铜)4个点.孔内6个点.公式为:孔内6个点平均值<span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">÷</span>面4个点平均值<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';">≥80%,业界标准.渗镀则为线路间隙之干膜问题赞成,导致电镀时干膜下渗铜.可打切片.标准<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman";">＜3.2mil.独立线,独立孔很简单,就相当于你一个人,</span></span></font></font></span></font></span></p> <p>谢谢！！！</p><p>真的非常感谢！！！</p> <p><strong><font face="Verdana" color="#61b713">yubin_001982</font></strong></p><p><strong><font face="Verdana" color="#61b713"></font></strong></p><p><strong><font face="Verdana" color="#61b713">是个好人</font></strong></p> 这个应该的,大家共同学习,人总有一个成长过程,但是只要肯问肯学一定会比别人快.
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