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200立方高纯制氮机服务于越南客户
日期:2024-02-21 来源:云顶2322 访问:87次
电子行业高纯制氮机适用于半导体生产封装、电子元器件生产、LED、LCD液晶显示器、锂电池生产等领域。制氮机具有纯度高、体积小、噪声低、能耗低等特点。
氮气在SMT焊接中的主要作用包括:氮保护层、屏蔽波峰、回流焊等。
无铅焊要求的温度很高,在200度以上时,焊料会加速氧化,为了提高无铅焊点焊接质量,以及焊点表面不被氧化,需要采用惰性气体保护。氮气由于制造成本低,容易获取,成为一种合适的保护气。
回流焊中的氮气在惰性气体应用于波峰焊接制程之前,氮气就一直用于回流焊接中。在回流焊接中使用氮气有以下优点:端子和焊盘的湿润较快;可焊性变化少;改善了助焊剂残留物和焊点表面的外观;快速冷却而没有铜氧化。
氮气源的选择:气体分馏塔、购买瓶装氮气、购买液氮、现场制取氮气。从实际出发,考虑到成本、运输、搬运等条件,电子厂SMT技术采用制氮机制取氮气是一个切实可行的方案,而凯恩普制氮机,由于体积小、便于安装、控制技术等优势而得到广泛应用。

electron
Electronics industry Kanep nitrogen generator is suitable for semiconductor production packaging, electronic components production, LED, LCD LCD display, lithium battery production and other fields. The nitrogen generator has the characteristics of high purity, small size, low noise and low energy consumption.
The main functions of nitrogen in SMT welding include: nitrogen protection layer, shielded wave peak, reflow soldering, etc.
Lead-free soldering requires a high temperature, above 200 degrees, the solder will accelerate oxidation, in order to improve the quality of lead-free solder joint soldering, and the surface of the solder joint is not oxidized, inert gas protection is required. Nitrogen is easy to obtain due to its low manufacturing cost, making it a suitable protective gas.
Nitrogen in reflow soldering has been used in reflow soldering since the inert gas was applied to the wave soldering process. The use of nitrogen in reflow soldering has the following advantages: faster wetting of terminals and pads; Less solderability variation; Improved appearance of flux residue and solder joint surfaces; Rapid cooling without copper oxidation.
Nitrogen source selection: gas fractionation column, purchase of bottled nitrogen, purchase of liquid nitrogen, on-site nitrogen production. From the practical point of view, considering the cost, transportation, handling and other conditions, the SMT technology of the electronics factory uses the nitrogen production mechanism to take nitrogen is a practical solution, and the Kanep nitrogen generator is widely used due to its small size, easy installation, control technology and other advantages.
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