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Tidsoptimering av en lödprocess

Ahnelöv, Mats (1995) In MSc Theses
Department of Automatic Control
Abstract
This report investigates time optimization of a process where brazed heat exchangers are soldered in a vacuum furnace. This process consists of three phases, heating soldering and cooling. Physical models have been obtained by using stationary conditions. These are not sufficient to describe the actual very complex behavior. Instead, nonphysical models have been identified. Simulations of the heating and soldering phases, based on each, when the maximum heat exchanger weight is less than 2000 kg. Implementation of a sequential fan controller for the cooling phase has reduced the cooling time from about 180 minutes to about 130 minutes. Also, by use of control, emergency cooling is avoided.
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author
Ahnelöv, Mats
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
Solder process, Sequential control
publication/series
MSc Theses
report number
TFRT-5530
ISSN
0280-5316
language
English
id
8848795
date added to LUP
2016-03-24 18:25:02
date last changed
2016-03-24 18:25:02
@misc{8848795,
  abstract     = {This report investigates time optimization of a process where brazed heat exchangers are soldered in a vacuum furnace. This process consists of three phases, heating soldering and cooling. Physical models have been obtained by using stationary conditions. These are not sufficient to describe the actual very complex behavior. Instead, nonphysical models have been identified. Simulations of the heating and soldering phases, based on each, when the maximum heat exchanger weight is less than 2000 kg. Implementation of a sequential fan controller for the cooling phase has reduced the cooling time from about 180 minutes to about 130 minutes. Also, by use of control, emergency cooling is avoided.},
  author       = {Ahnelöv, Mats},
  issn         = {0280-5316},
  keyword      = {Solder process,Sequential control},
  language     = {eng},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Tidsoptimering av en lödprocess},
  year         = {1995},
}