Thermal simulation for predicting substrate temperature during reflow soldering process

Inoue, M.; Koyanagawa, Takashi

doi:10.1109/ectc.2005.1441396

Cited by 22 publications

(15 citation statements)

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“…Although, a method for optimizing the heating capability of forced convection reflow ovens was published in [11], but it was based on a wrong correlation between a and the heater temperature. Several newer thermal models of the reflow soldering process [12,13] still use an average or some different values of a for the whole oven, but this is a wrong approach. The value of a highly depends on the location in each heater zones.…”

Section: Introductionmentioning

confidence: 96%

Measuring heat transfer coefficient in convection reflow ovens

Illés

2010

Measurement

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Section: Introductionmentioning

confidence: 96%

Measuring heat transfer coefficient in convection reflow ovens

Illés

2010

Measurement

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“…A method for optimizing the heating capability of heater gas streams in convection reflow ovens was carried out by the geometry and dimension modifications of the nozzles [13]. Inoue [14] has approximated the heat transfer coefficient of the heater gas streams from the nozzle-matrix blower system with the systematic series of experiments. The direction characteristics of the heat transfer coefficient were also studied by temperature measurements [10,15].…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the gas flow velocity space in convection reflow oven

Illés

Bakó

2014

International Journal of Heat and Mass Transfer

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Abstract:In this paper, numerical study of the gas flow velocity space is presented in a convection type reflow oven. Convection reflow ovens usually apply the nozzle-matrix heater system which generates numerous gas streams perpendicularly to surface of the soldered assembly. The ovens are divided into zones; every zone contains an upper and a lower nozzle-matrix. The temperature can be independently controlled in each zone; however the velocity of the influent streams is usually fixed. The gas flow velocity space is one of the most important parameter of the local heat transfer coefficient in the oven. The gas flow space cannot be examined by classical experimental methods due to the extreme circumstances in the reflow oven. Therefore the effect of the soldered assembly, the different component sizes, the position of the conveyor belt and the vent hood between the zones on the gas flow velocity space was studied by CFD simulations.These results can be useful during the overview of the actual assembly design and manufacturing rules.

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“…An approximation of the  parameter in convection reflow ovens (with nozzle-matrix blower system) already exists [22]:…”

Section: Introductionmentioning

confidence: 99%

Heating characteristics of convection reflow ovens

Illés¹,

Harsányi²

2009

Applied Thermal Engineering

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Abstract:The inhomogeneous temperature distribution in the reflow oven can cause soldering failures. In this project, we investigate how the construction of a convection reflow oven has an affect on its heating characteristics. In the convection reflow oven itself, the heating capability is mainly dependent on the heat transfer coefficient, which in turn is mostly determined by the gas flow parameters. Therefore, we study how the construction of the reflow oven affects the flow of gas in the oven. Our conclusions are then verified with experimental results. During our experiments, temperature changes were measured at different points located around the centre of the processing area in the oven. From this data, the 3D directional characteristics of the heat transfer coefficient was calculated using the heat equation of the investigated reflow oven. We consider that our results are important for the effective thermal modelling of the reflow soldering process [1] and are also useful when calibrating and designing reflow ovens. During our work, we examine the latest reflow ovens constructed with the nozzle-matrix blower system.

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Thermal simulation for predicting substrate temperature during reflow soldering process

Cited by 22 publications

References 1 publication

Measuring heat transfer coefficient in convection reflow ovens

Measuring heat transfer coefficient in convection reflow ovens

Numerical study of the gas flow velocity space in convection reflow oven

Heating characteristics of convection reflow ovens

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