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                                                                                                                                                                                                                                                                                                                                      如何控制激光焊錫機的工藝質量?

                                                                                                                                                                                                                                                                                                                                      2022-05-27 11:14:13 責任編輯:邁威 0

                                                                                                                                                                                                                                                                                                                                        如何控制激光焊錫機的工藝質量?激光焊錫機除了激光器的選擇外,還配備了CCD視覺定位、溫度控制、焊后檢測、光斑整形和焊錫控制等多種功能系統,不斷提高效率和生產企業自動化;在激光焊錫質量的控制上,邁威機器人激光有著成熟的技術應用。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        邁威激光焊接機采用的質量控制,激光加熱的特點是速度極快;正常情況下可以獲得精細的接頭結構,但當有污染、焊錫過少、鉛與焊錫接觸不良等情況時,加熱溫度迅速升高,甚至導致引線熔化燒毀。因此,對連接過程和質量的檢測和控制是非常必要的,大多數系統都將溫度作為監控質量的參數。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        紅外探測單元結構細致,特殊設計的濾光片R發揮多重作用:YAG激光(波長1.06μm)全反射,然后聚焦在焊點上;紅外輻射(波長3~81μm)可通過R,聚焦后到達紅外傳感器;YAG激光在焊點表面的反射被R完全阻擋,保證不干擾溫度檢測。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        它是激光焊接過程中焊點上的紅外輻射信號。為了分析信號每個轉折點的意義,同時利用高速攝影記錄了焊點的形成過程。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        激光加熱開始后,錫膏迅速加熱熔化,分散的液滴逐漸堆積,最終形成一個大的熔滴。大熔滴形成后并沒有立即在焊盤上鋪展和向元件焊端爬升,而是會停留一段時間。當焊盤和元件端子也被加熱到焊料的熔點以上時,迅速完成鋪展和爬升。通過高速攝影照片與紅外輻射曲線對比,可以得到表征焊點上焊錫熔化、堆積、鋪展和爬升的特征點,并以此為基礎進行實時檢測和控制??梢詫崿F激光焊錫的質量。


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