What are the working principles of double rail reflow welding?
Author:Huang Di Time:2021-06-10 15:45 Browse(794)
What is the working principle of double rail reflow welding, Touch screen and OLED Forum
In SMT production line, reflow soldering is mainly used to weld the circuit board on which the components are attached by the SMT machine. The solder paste is melted by heating to make the components and the circuit board pad welded together, and then the solder paste is cooled by the cooling of reflow soldering to solidify the components and the pad together.
different reflow soldering has different advantages.
reflow soldering depends on the effect of hot air flow on the solder joint, The colloidal flux undergoes physical reaction under certain high-temperature air flow to achieve SMD welding. The reason why it is called "reflow welding" is that the gas circulates in the welder to generate high temperature to achieve the welding purpose.

What are the working principles of double rail reflow welding?

next, Zhichi technology will analyze the working principle of double track reflow welding with you.
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Q% g0 S9 N. k0 G% d, C1 R) V' ?       By parallel processing of two circuit boards at the same time, the capacity of a single dual rail reflow furnace can be doubled.
at present.
circuit board manufacturers are only limited to processing the same or similar weight circuit boards in each track.
now.
the dual rail dual speed reflow furnace with independent track speed makes it possible to process two circuit boards with greater difference at the same time.
at present    e% I* ]# ^( l' Y) a3 f* O" W1 i) R$ O/ d* b9 n      First of all,
we need to understand the main factors that affect the heat transfer from the reflow furnace heater to the circuit board.
under normal circumstances.
as shown in the figure, the fan of the reflow furnace pushes the gas (air or nitrogen) through the heating coil, and after the gas is heated, it is transferred to the product through a series of orifices in the orifice plate.
after the gas is heated, it is transferred to the product through a series of orifices in the orifice plate* I2 x9 p* h% m' |2 n3 F' h# N- h( k8 u$ ~% ?       Two different types of products can be reflow welded on the double guide rail at the same timeThe production efficiency can be increased by two times, the high-quality high-temperature high-speed motor has the advantages of smooth air transportation, small vibration and low noise.
professional wind wheel design.
stable wind speed can effectively prevent the uniformity of wind when PCB board is heated, and achieve high repeated heating. The vertical control cooling system is made of imported stainless steel, and the upper and lower cooling convection, and the cooling curve is mirror image with the welding temperature curve, It fully meets the SMT international certification standard.
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