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塑料焊接原理

“超聲波焊接”的熱量與壓力（一）

在处理塑胶超声波焊接泄漏难题时，发现气密性泄漏不合格率高，给顾客导致非常大的损害。细想全部实验全过程及踏过的弯道，获得一个结果：要想处理焊接産品质量问题，不单是要选用DOE实验方式以提升主要参数，更关键的是把握住危害焊接的重要两因素——熱量和工作壓力。

只需要正確的控制好這兩個要素：熱量和壓力，就可以將塑料零件焊接在一起，獲得良好的焊接效果。爲了更好地方便大家了解，“靈科超聲波 ”以熱板焊接爲例子，針對不了解“熱板焊接”的人员，讲解一下其原理。熱板焊接过程简单的说是，两个部件与加热板接触，部件表面变热熔化。撤走加热板并将两部件推到一起直到它们彼此粘合。

熱板焊接-焊接马桶盖

還有一些其他焊接全過程，如超聲波焊接、振動摩擦焊接、激光焊接、紅外線焊接、熱流焊接實質上是相近。碰到難題時，能夠選用同樣的統計分析方法。

熱量必須精准操縱熱量傳輸到塑膠部件的焊接表面，促進他們變爲半熔融情況。熱量太少，焊縫表面不會熔化，沒強度也沒有密封性。太多的熱量，則會燃燒降解材料，削弱其機械性能和氣密效果。在熱板焊接加工工艺中，需要应用三个基本参数来操纵热量。

熱板溫度就是指與塑膠部件觸碰的加熱板的溫度。熱學告知大家，加熱板和塑膠部件中間的溫度差越大，熱量傳送的速率就越來越快。因而，熱板溫度會危害加溫零件的速率。

熔融時間塑膠部件與加熱板觸碰時間。部件與加熱板觸碰的時間越長，就會有大量的時間讓熱量滲透到零件的焊接表面。

這是“靈科超聲波”關于“超聲波焊接”熱量與壓力基礎介紹的第一部分。

“超聲波焊接”的熱量與壓力（二）

使用“超声波”焊接时为何産品结果会有差异

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