What are the working processes of reflow soldering furnace in SMT production line?
Author:Jiang Nan Time:2021-06-07 10:13 Browse(860)
What are the working processes of reflow soldering furnace in SMT production line, Touch screen and OLED Forum
What are the working processes of reflow soldering furnace in SMT production line?! ~% } 9 k8 G1 J+ a: Q3 H2 A8 W; w- G1 {0 i2 R, W1. When the PCB enters the temperature rising zone of reflow soldering furnace, the solvent and gas in the solder paste evaporate. At the same time, the flux in the solder paste moistens the pad, component ends and pins, and the solder paste softens, collapses, and covers the pad, isolating the pad and component pins from oxygen.
the results show that the solder paste can effectively prevent the solder pad and component pins from oxygen( k7 l% _. P- l* i4 Z# \    E2 q9 W; C (t0 G6 J.

What are the working processes of reflow soldering furnace in SMT production line?

F1 R2, when the PCB enters the reflow oven holding area, the PCB and components should be fully preheated to prevent the PCB from suddenly entering the welding high temperature area and damaging the PCB and components.
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n & K "{, X8 C! w" w& {$ t6 A    N * g'd * C3. When the PCB enters the reflow soldering area, the temperature rises rapidly to make the solder paste reach the melting state, and the liquid solder will wet, diffuse, diffuse or reflow the PCB pads, component terminals and pins to form solder joints- L- E4 `# H& B2 b:} * x 'A6 F.
R / C4 and PCB enter the cooling zone of reflow soldering furnace to solidify the solder joint, and the reflow soldering furnace is completed.
R / C4 and PCB enter the cooling zone of reflow soldering furnace to solidify the solder joint   \/ Y8 Y/ s0 g) S0 _ 5 K* Z7 E$ W5 x3 {/ }" V7 V9 h' m1 K1 V! Y       In short, the printed circuit board with SMT components is transported through the preheating zone, insulation zone, welding zone and cooling zone of reflow soldering furnaceAfter the four temperature zones of reflow soldering furnace, a complete solder joint is formed.
before the reflow soldering furnace works, it is necessary to set the reflow soldering temperature curve of the product.
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