Can You Reflow Solder With A Heat Gun
Some heat guns get a lot hotter than others and some solders melt at far lower temperatures than others.
Can you reflow solder with a heat gun. And the small size vs the heat guns diameter and air flow speed. The heat gun produces a lot of air that can blow these parts away. If you can.
The process wont be suitable if you have to assemble a large number of electrical components on a board. And might not be possible depending on the hiardrier. So some heat guns will melt some or even most solders and some solders can be melted by almost any heat gun.
If youre going to use any no-lead as in part connection not the toxic metal packages like DFNQFN or anything with exposed pad then the hot air rework is very helpful if not required. If a real heatgun point it at the gpu die and do that for a while and see if its better. Yes you can reflow solder with a heat gun.
But well doesnt matter as after all the googling and search i came to the conclusion that a reflow from a heat gun almost never lasts especially done by not a pro. It describes the four stages of reflow soldering and provides the times and temperatures for each of the four stages when using a soldering reflow oven. In this article there is a discussion of solder reflow profiles which might be of interest to you.
Hot air and paste is viable yeah. The hot air station has closed-loop temperature control and air volume control and interchangeable nozzles to focus the air. A common heat gun is an inexpensive way to reflow or reattach electronic components that have been soldered together.
Often one side of the IC will go first so the IC gets a sideways tilt. Keep heating until you see the IC level off again. To Correctly ReflowTM with a heat gun youd need to know exactly what you are planning to reflow and youd need to cover any parts you dont want moving around with kapton-tape.