一本色综合久久-一本色综合网久久-一本色综合亚洲精品蜜桃冫-一本无码人妻在中文字幕免费-一本无码中文字幕在线观-一本一本久久aa综合精品

Welcome to the official website of Legret Metal Company
Focus on electronic welding for 20 yearsDONGGUAN LEGRET METAL.,LTD
National consultation hotline:135-2799-2739
Contact US
mobile phone: 135-2799-2739
Service hotline: 0769-38893080
Email: lzd@dglzd.com
Address: Dongguan lvzhidao Metal Co., Ltd
Contact person: Manager Zeng
Industry information

What are the characteristics of reflow welding, one of the common welding methods of electronic components?

作者:Solder manufacturer 2021-03-08 0

In the production process of electronic products, there are two common welding methods of electronic products, which are called reflow soldering and wave soldering;


The difference between the two welding methods is that the wave peak welding is mainly used to weld the plug-in circuit board, while the reflow welding is mainly used for SMT chip board welding.


Reflow welding process is to realize the soldering of mechanical and electrical connection between the welding end of surface assembly components or pins and the solder pad of printed board by remelting the paste solder which is pre distributed to the pad of printed board.


Reflow welding can control the amount of solder applied in the leading process, effectively reduce the incomplete defects of solder, such as false welding and bridge welding, so as to make the welding quality stronger, the weld joint consistency better and the reliability is very high.


During the process of electronic processing, the reflow welding does not directly dip the component into the molten solder, so the component is subject to small thermal impact (because the heating mode of reflow welding is different, in some cases, the temperature applied to the components will be higher, and the thermal stress of the corresponding components will be relatively large).


The solder for reflow welding is a commercial solder paste. It can ensure the normal composition when ordering, and it will not mix impurities in general, and it is easier to ensure the quality of welding.


If the position of solder applied on PCB is correct in the leading process and the position of the sticking component deviates from that of the component, during the reflow welding process, when all the welding ends, pins and corresponding pads of the components are wet at the same time, the effect of the surface tension of the molten solder will produce self setting effect, which can automatically correct the deviation and pull the components back to the approximate accurate position.


Local heating heat source can be used, so different welding methods can be used on the same substrate.


The process is relatively simple, and the workload of repairing electronic components is very small when the defective products appear.


主站蜘蛛池模板: 欧美日韩国产一区二区 | 快播第四色 | 琪琪色在线视频 | 欧美午夜艳片欧美精品 | 99热这里只有精品在在 | 亚洲视频国产视频 | 99精品国产兔费观看66 | 99久热re在线精品视频 | 国产成人久久精品麻豆二区 | 日本一级在线观看视频播放 | 美女超逼 | 国内精品区一区二区三 | 四虎精品免费国产成人 | 性欧美www | 玖玖在线免费视频 | 亚洲国产一区视频 | a一级网站| 欧美成年黄网站色视频 | 国产精品日本一区二区在线播放 | 国产欧美在线观看 | 这里精品| 久久精品国产只有精品6 | 日韩二三区| a级爱爱视频 | 国产极品嫩模在线观看91精品 | 在线观看视频国产 | 在线97| 久久99精品久久久久久国产人妖 | 国产玖玖在线观看 | 欧美一区二区三区免费视频 | 欧美一级一极性活片免费观看 | 理论毛片 | 四虎影视在线影院4hutv | 日韩中文字幕精品视频在线 | 国产精品1区 | 日韩视频精品 | 国产精品一级香蕉一区 | 日韩午夜在线视频不卡片 | 国产精品嫩草研究所永久网址 | 国产一区二区三区在线免费 | 亚洲欧美另类在线 |