超碰国产先锋,亚洲成A人片77777在线播放,嗯嗯啊电影在线网站,大陆激情网站

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 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(mén),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。


seav一区二区三区| 无码精品人妻一区二美国区三区 | 成人欧美视频一区二区三区黑人| 西西大胆午夜人体视频| 九色丨porny丨自拍 icu| 中文字幕韩国三级理论无码| 乱伦视频下载| 国产成人无码一区二区在线播放| 99久久久国产精品免费手机版一| 丁香六月国产日韩欧美一区二区三区| 精品一区无码| 欧美在线人视频在线观看| 国产成人亚洲综合网色欲网久下载| 亚洲人成色777777精仙林踪| 亚洲婷婷成人| 熟女国产乱伦| 草草影院发布页国产| 亚洲无码电影网站| 色先锋资源久久综合5566| 四色亚洲精品视频| 丁香六月在线观看| 成人久久精品| 内射无码国产一级成人最新在线| 成人性生交片无码免费30年老片| 人人澡夜夜澡狠狠澡| 黄色视频在线观看www| 与亲女洗澡时伦了毛片| 99精品在线一区二区| 中文字幕精品三区| 国产精品久久久久久久久动漫| 久操网京热无| 熟妇人妻系列AⅤ无码专区友真希| 无码人妻AⅤ一区二区三区用会员| Chinese高潮呻吟天美传媒| 日韩人妻成人无码免费| 永久免费AV| 波多野结衣苍井空免费视频| 级r片内射在线视频播放| 日韩在线看片免费观看软件| 蜜臀亚洲一区二区| 精品亚洲成a人片在线观看少妇|