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PCB印刷線路板烘烤時(shí)的堆疊方法

PCB印刷線路板烘烤時(shí)的堆疊方法有:1.烘烤大尺寸PCB時(shí),使用平疊。建議最大堆疊數(shù)量不應(yīng)超過 30 件。烘烤后10分鐘內(nèi)打開烤箱取出PCB。防板彎曲夾具。大尺寸PCB不建議垂直烘烤,容易彎曲。

PCB印刷電路板線路板加工制作生產(chǎn)

2、烘烤中小型PCB印刷線路板時(shí),可以采用水平堆疊。建議最大堆疊數(shù)量不超過 40 件。它也可以是直立的。數(shù)量不限。烘烤后10分鐘內(nèi)打開烤箱取出PCB。待其冷卻,烘烤后壓上防板折彎夾具。

3.PCB烘烤建議只用105±5℃的溫度烘烤PCB,因?yàn)樗姆悬c(diǎn)是100℃,只要超過它的沸點(diǎn),水就會(huì)變成水蒸氣,因?yàn)?a href="http://www.carlamunzer.com/">PCB印刷線路板中含有的水分子不會(huì)太高 不需要太高的溫度來提高氣化率。過高的溫度或氣化速度容易造成水蒸氣迅速膨脹,實(shí)際上對(duì)質(zhì)量是不利的,特別是對(duì)于多層板和有埋孔的PCB,105℃剛好在水的沸點(diǎn)以上,溫度不會(huì)太高,可以除濕,降低氧化風(fēng)險(xiǎn)。而且烤箱控溫的能力也比以前提高了很多。

4.PCB印刷線路板是否需要烘烤取決于它的包裝是否受潮,即真空包裝中的HIC(濕度指示卡)是否已經(jīng)顯示出潮濕。如果包裝完好,HIC 并不表示它是濕的。不用烘焙也可以上網(wǎng)。

發(fā)布者 |2021-07-08T17:12:41+08:008 7 月, 2021|PCB資訊|PCB印刷線路板烘烤時(shí)的堆疊方法已關(guān)閉評(píng)論

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