gauravkothari23
Advanced Member level 2
Hi all...
i have designed a reflow oven to solder my SMD components. and also i am maintaining the temperature (tolerance of 6 to 7 degree Celsius) and time duration (tolerance of 4 to 5 seconds) as per the datasheet (image attached).
Room temperature (approx 25 to 30 degree) to 150 degree = approx 90 to 100 seconds.
150 degree to 180 degree = approx 90 to 100 seconds.
180 degree to 225 degree = approx 45 to 60 seconds.
my problem is some times on some of my solder point i dont get a proper finish or shine. i mean to say that sometimes the solder paste at some point it gets harder and does not get melt. when i try to scratch the same using a blade or any pointed thing, it comes out like a very thin powder. and also looks very ugly.
what is the problem with it.. is my preheating time too long.
i have designed a reflow oven to solder my SMD components. and also i am maintaining the temperature (tolerance of 6 to 7 degree Celsius) and time duration (tolerance of 4 to 5 seconds) as per the datasheet (image attached).
Room temperature (approx 25 to 30 degree) to 150 degree = approx 90 to 100 seconds.
150 degree to 180 degree = approx 90 to 100 seconds.
180 degree to 225 degree = approx 45 to 60 seconds.
my problem is some times on some of my solder point i dont get a proper finish or shine. i mean to say that sometimes the solder paste at some point it gets harder and does not get melt. when i try to scratch the same using a blade or any pointed thing, it comes out like a very thin powder. and also looks very ugly.
what is the problem with it.. is my preheating time too long.
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