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在维修或制作电子产品时,拆卸集成块及多脚元器件是常有的事。由于集成块和多脚元器件排列紧凑,拆装不小心常会使引脚断裂。本文介绍几种巧拆集成块和多脚元器件的实用方法,供初学者参考。 1.空心针头法 找一支9至10号医用空心针头,用小锉刀把原有尖端斜口锉平,再把成形的平口外圆锉成斜状。拆卸集成块时,用尖头烙铁把集成块引脚焊锡熔化,把针头套住一根引脚,插入印刷板孔内,随后边移开烙铁边旋转针头,待焊锡凝固后拔出针头。此时,该引脚就和印刷板完全脱离。照此方法再拆卸其他引脚。此法简便易行。 2.金属编织带吸锡法 取一段多股金属编织带,浸上松香酒精溶液。将浸过松香酒精溶液的编织带放在集成块引脚上,手持通电烙铁加热集成块引脚上的焊锡和编织带,到一定温度后,引脚上的焊锡将被编织带吸附住,然后把编织
Disassembly of manifolds and multi-leg components is commonplace when servicing or making electronic products. Due to the compact arrangement of manifolds and multi-leg components, careless handling of the pins can often lead to breakage of the pins. This article describes several clever demolition integrated block and multi-foot device practical method for beginners. 1. Hollow needles to find a 9 to 10 medical hollow needles, with a small file to the original tip bevel file flat, and then formed flat mouth cylindrical file into a ramp. When removing the manifold, use a sharp iron to melt the lead of the manifold and solder the needle to a pin, insert it into the hole of the printing plate, and then rotate the needle while removing the iron until the solder has solidified and remove the needle. At this point, the pin is completely detached from the board. Follow this method and then remove the other pins. This method is simple and easy. 2. Metal braided suction tin take a section of multi-strand braid, immersed in rosin alcohol solution. Will be soaked in rosin alcohol solution braid placed on the block pin, hand-held power soldering iron heating block pin on the solder and braid to a certain temperature, the pin on the solder will be braided with suction, and then Weaving