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An apparatus for performing fluxless soldering includes an enclosure having a gas inlet through which an inert gas is introduced to create an inert gas-rich environment. Components are placed in the enclosure via an access port which also functions as a vent for allowing purge gases to vent from the enclosure. In one embodiment a heating stage is provided in the enclosure which provides .
Inert gas under pressure is supplied to this space to exclude air from the solder coated undersurface of the workpiece to inhibit oxidation thereof. The disclosure apparatus includes a nozzle for forming a one-sided standing wave and a second nozzle is positioned above and extends in the same direction as the solder wave-forming nozzle.
A cover plate or shroud extends over a solder reservoir and has a slot for a solder wave to extend up above the cover plate. A reduced oxygen atmosphere is supplied from gas outlets under the cover plate on both sides of the solder wave. Furthermore a gas knife is located to direct a stream of gas on an element such as a circuit board as it passes through the solder wave.
May 16 2018 In a vapor phase oven limitations of the physical temperature reliably prevent overheating of any part in the soldering process. As the vapor has a higher density it is heavier than the surrounding air. This permits soldered parts to remain sealed inside an inert vapor atmosphere.
The use of inert atmosphere soldering technology allows the process engineer to effectively deal with the new packaging technologies while enhancing the process window reducing costs improving quality and increasing productivity.
The benefits of tinsilver joints are well documented. You eliminate the necessary nitrogen purge during heating and external cooling of heat sensitive valves is unnecessary. Remember solder fluxes are corrosive. Take care to avoid excess flux on the tube and fitting that
A complete retrofit solution Nexelia for Reflow Soldering was expertly designed by Air Liquide to generate and carefully monitor inert atmosphere into your reflow oven. The solution combines nitrogen supply with an automated controlling system to automatically adjust the inert atmosphere composition in
implementation of a wave soldering system using inert gas. The system based on the PSA-generated nitrogen with residual oxygen levels of 100ppm has low maintenance cost and is very simple to retrofit. In this study technical results and economic benefits are analyzed by feasibility and actual test.
Jul 19 2020 1. Fast speed high strength small deformation no need for correction and cleaning after welding. 2. It is suitable for welding precision work and can ensure the quality of work. 3. High assembly accuracy is helpful for the development of new jewelry production technology. 4. Good consistency and stability usually without filling metal and .
air products welding focus on the gas metal arc welding gmaw process Sean Young Air Products Welding Specialist in action Air Products prides on outstanding customer service innovation and a secure supply of industrial gases but more importantly is the technical expertise provided to customers in terms of the application of the .
Nitrogen N2 - displaces airoxygen in the furnace atmosphere Inert gases - helium and argon used in brazing metals and ceramics Providing a good joint in an automotive application is keylow strength return bend joints on a radiator can lead to failures once in service.
Chrys Shea--Siemens Business Communications Systems Inc. Gary T. Shipe--Air Products and Chemicals Inc. Abstract. The current decade has brought many innovations to wave solderi
Oct 12 1993 An apparatus and method of reflow soldering electronic components preferably to printed circuit boards in an inert atmosphere to reduce solder defects and the need for flux or cleaning wherein the inert atmosphere is provided from a source of inert gas through several distribution lines which parallel the conveyor belt of a reflow solder furnace and supply each end of porous sintered metal .
Free White Paper to Benefits of Inert Gas for Printed Circuit Board Assembly Soldering Processes. Many soldering defects in electronic assemblies occur due to poor wetting of the filler metal with both the component and substrate. By using nitrogen to inert you can decrease defects up to 65.
to the soldering system and its benefits far outweighed the issues associated with air entrainment. Many inerted systems throughout the world have been using hot gas knives and soldering in 95 nitrogen with little adverse effects of the reduced purity environment. Figure 1. Schematic Diagram of CoN2tour Laminar Wave
it uses new or existing soldering equipment. A technology with demonstrated superior performance Air Products inert wave soldering is both cost-effective and user friendly. Inert wave soldering and nitrogen inerting can reduce your cost of ownership through an increase in solder joint quality and a decrease in manufac-
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Apr 12 2021 To mitigate defects and inefficiencies wave soldering is done in an inert environment such as that with nitrogen presence. When wave soldering is performed in a nitrogen environment either of two approaches can be employed partial gas treatment or tunnel system. In partial gas treatment only the solder wave is under a blanket of nitrogen.
The use of nitrogen can reduce dross effectively by displacing air over the solder pot and to form a gas cloud over the wave generator and reduce micro dross. Beyond the dross reduction advantages of using an inert atmosphere one can gain benefits such as improve wetting of the solder into the plated through holes PTH or barrel fill.
Duratec is an innovative compressed air and inert gas distribution system designed to be leak-proof installed quickly and easily and maintained cost-effectively. As a result Duratec saves you time and money. Traditional metallic compressed air systems are a main cause of unnecessary energy use excessive wear and tear on compressors
The Benefits of Using Inert Gas Soldering Nitrogen is the most widely used industrial gas for inert atmosphere reflow soldering. Its popularity has come about based mostly on the fol-lowing factors 1. AvailabilityProduction capacity of nitrogen in the U.S. is over 35000 tons
Nitrogen Generation. Nitrogen is commonly used in industry because it is dry and inert. While traditionally nitrogen has been obtained through liquid N2 deliveries and high pressure compressed gas cylinders onsite nitrogen generation is a more modern approach that places you in control. Nitrogen generators continuously produce high purity .
A wave soldering apparatus and process occurs in an atmosphere which substantially excludes oxygen. By providing a pressurized effect on an element to be soldered while passing through a solder wave fluxless soldering is accomplished avoiding the necessity to remove flux residues. The element is preheated in a shield gas atmosphere substantially excluding oxygen moved in a predetermined path .