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Selective wave soldering nitrogen filling welding usually adopts the gas dispersion technology, which means that the solder is sprayed into the solder wave required by the design through the electric pump or electromagnetic pump, and the nitrogen is evenly diffused on the wave crest surface by injecting nitrogen into the solder pool, so as to achieve the purpose of inert gas protection.
The main function of adding nitrogen (N2) to SMT reflow furnace is to reduce the oxidation of welding surface and improve the wettability of welding. Because nitrogen is an inert gas, it is not easy to produce compounds with metals. It can also isolate the oxygen in the air from the metal at high temperature and accelerate the generation of oxidation reaction.
Firstly, the principle that the use of nitrogen can improve the solderability of SMT is based on the fact that the surface tension of solder in nitrogen environment will be less than that exposed to the atmospheric environment, so that the fluidity and wettability of solder can be improved.
Secondly, nitrogen reduces the solubility of oxygen in the original air and substances that can pollute the welding surface, greatly reducing the oxidation effect during high-temperature soldering, especially in improving the quality of second side reflow.





Popular products in the industry

ModelNPM10

Nitrogen flow12~40m³/h

Nitrogen purity99%~99.999%

Nitrogen pressure0.6MPa

Equipment size1270×470×1690mm(L×W×H)





Technical advantages
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GSE Tech (Suzhou) Co., Ltd. is an innovative technology enterprise, focusing on innovation, R & D, manufacturing and sales of high-performance gas generation equipment and related services.
Service guarantee
GSE provides a one-stop gas supply solution and actively cooperates with users to provide technical support for on-site operating conditions!
Stronger technology
GSE has a core R & D team focusing on the R & D of gas equipment and is committed to becoming an industry-leading gas solution expert!
Continuous innovation
In an increasingly innovative era of rapid development, GSE considers the user's experience in many aspects and continuously upgrades the equipment functions to make the gas equipment more intelligent and convenient!
High cost performance
Compared with bottled gas in the market, gas equipment brings users more cost saving, convenient use and other services!
Relevant application cases
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Have you chosen the right nitrogen generator for selective wave soldering?
With the continuous development of China's automobile industry and electronic communication industry, it also promotes the continuous improvement of electronic welding process. In 1995, RPS developed the world's first selective wave soldering equipment. The successful development of this equipment has further improved the welding efficiency of through-hole components. With the national ban on the use of lead-containing solder, lead-free welding has gradually become the mainstream. Because wave soldering is sensitive to oxygen in the environment, the oxidation of solder will affect the welding quality; Therefore, nitrogen protection is gradually accepted by more and more SMT manufacturers!

Did you choose the right nitrogen for selective wave soldering? In the nitrogen protection system, there are several sources of nitrogen: pipeline nitrogen, liquid nitrogen, gas cylinder, nitrogen generator, etc. For most manufacturers, there is no such unique and excellent condition as pipeline nitrogen, and some people will choose liquid nitrogen and gas cylinders; In the early stage of these two options, although the investment will be small, there will be more logistics problems, suppliers' market supply problems and so on. For a long time, it is not a small investment. Therefore, the nitrogen generator is a reasonable choice, and the one-time investment return cycle is short!
GSE Technology (Suzhou) Co., Ltd. (hereinafter referred to as GSE) is an innovative technology enterprise, committed to professional innovation and service of industrial gas frontier technology. We focus on scientific and technological research and development, provide customers with more comprehensive, convenient and considerate services, and constantly pursue innovative products and improve service models to create higher value for customers.
As the latest generation product independently developed by GSE, the modular nitrogen generator is made of aviation aluminum magnesium alloy, and the principle is pressure swing adsorption technology. At the same time, it absorbs the product advantages of membrane separation. Its excellent nitrogen quality and plug and play convenience are easier to be accepted by customers.

Moreover, the modular nitrogen generator of our company is compact in structure and small in volume, and the adsorption barrel meets the national standard non pressure vessel, so as to avoid the complicated and unnecessary additional work such as the annual national declaration of enterprise pressure vessel. Our modular nitrogen generator ranges from 97%-99.999% purity and 1.0-114.1m ³ The hourly air supply flow is available for customers to choose. Our equipment has an intelligent control system without special personnel and 7x24 hours of non-stop supply of nitrogen to better cooperate with the work of selective wave soldering!
Another feature is that our machine has the CMS module expansion function. If the customer adds a furnace in the later stage, there is no need to worry about insufficient nitrogen. Just add a CMS module directly! Save customers' purchase cost.
This is a case we provided for our customers. We can see that our machines are very coordinated at the side of the furnace and will not occupy additional space in the plant! GSE we always take the customer's demand as our biggest goal to improve the welding quality! GSE - your nitrogen making expert!

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