免费国产在线一区二区,亚洲国产成人av国产自,国产精品久久久久久久影院,av在线播放日韩亚洲欧我不卡

Welcome to the official website of Legret Metal Company
Focus on electronic welding for 20 yearsDONGGUAN LEGRET METAL.,LTD
National consultation hotline:+86 135-2799-2739
Contact US
mobile phone: 135-2799-2739
Service hotline: 0769-38893080
Email: anson@dglzd.com
Address: Dongguan lvzhidao Metal Co., Ltd
Contact person: Manager Zeng
Industry information

What is reflow soldering commonly used in solder field?

作者:綠志島焊錫廠 2021-03-12 0

Reflow soldering, foreign name 回流焊, reflow soldering technology is no stranger in the field of electronic manufacturing. The components on various hardware boards used in our computer are welded to the circuit board by reflow soldering.


Reflow soldering is to weld the components to the PCB board and mount the components on the surface. The reason why it is called "reflow welding" is that the gas circulates in the welding furnace to produce high temperature, so as to achieve the purpose of welding.


There is a heating circuit inside the reflow soldering furnace, which heats the air or nitrogen to a certain temperature and then blows it to the circuit board which has been attached with components. Depending on the effect of hot air flow on the solder joint, the colloidal flux carries out physical reaction under a certain high temperature air flow to achieve SMD welding; The welding material on both sides of the component melts and connects with the motherboard.


The advantage of this welding technology is that the temperature is easy to control, the excessive oxidation can be avoided in the welding process, the variable is small, and the manufacturing cost is easier to control;


The quality of reflow soldering will be affected by many factors, the most important factor is the temperature curve of reflow soldering furnace and the composition of solder paste in the process of electronic processing.


Now the high performance reflow soldering furnace which is often used can adjust and control the temperature curve more conveniently; Therefore, in the trend of miniaturization and high density, solder paste printing has become the key factor of reflow soldering quality, template, printing and solder paste can affect the quality of solder paste printing.



綠志島金屬有限公司是一家專業(yè)生產(chǎn)焊錫膏、焊錫線、焊錫條的公司,擁有自己的科研部門,專業(yè)生產(chǎn)、銷售電子焊接使用的金屬材料、電鍍錫制品、電子化學(xué)品等。

公司通過(guò)了ISO9001:2015國(guó)際質(zhì)量體系認(rèn)證,ISO14001:2015環(huán)境管理體系認(rèn)證和SGS中多項(xiàng)ROHS以及REACH的檢測(cè);中國(guó)賽寶實(shí)驗(yàn)室可靠性研究認(rèn)定。


中国xxx农村性视频| 亚洲国产精品无码久久久app| 姝姝窝人体色www国产| 一区二区三区啪偷拍| 奇米77777国产在线视频| 久久AV一区二区三区无码| 精品无码久久久久久| 加勒比无码hp| 永久免费无码日韩视频| 全免费a敌肛交毛片免费| 亚洲欧洲精品日韩av| 亚洲av无码兔费综合| 婷婷丁香五月缴情视频| 亚洲av激情一区二区三区| 亚洲色婷婷天天看| 蜜桃人妻少妇精品无码av| 7777色鬼XXXX欧美| 丰满多毛大阳户特写| 免费看黄色电影| 色偷偷人人干| 综合在线 亚洲 成人 欧美| 好屌妞在线播放| 特级欧美成人性a片| jiZZ在亚洲| 久久国产乱子伦视频无卡顿| 国产精品久久久久久人妻无 | 啊啊啊欧洲成人网站| 真人无码作爱免费视频| 成人电影一区在线观看| 亚洲va中文在线播放| 久久夜色精品国产噜噜AV小说| 国产爆乳无码一区二区麻豆| 婷婷AV天堂| 国产免费内射又粗又爽密桃视频 | 办公室撕开奶罩揉吮奶头在线观看| 天堂8在线新版官网| 欧美大黑性爱| 处破痛哭a√18成年片免费| 亚洲Av无码一区二区三区av| 欧美精品VIDEOFREE| 在线日韩国产成人免费|