Welding aluminum is not as difficult as you think. you can weld aluminum without any argon welding! Now, to solder aluminum parts, whether it's a radiator, Bicycle frame or your favorite pan, you do not have to look for a specialized workshop and give a lot of money. Now everything can be soldered at home! The connection is not worse than welded. And certainly more reliable than any cold welding. It takes practice to achieve perfect results. Spend a little time and practice on any scraps of aluminum pipes and you will get a great result.
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For welding you will need:
- Gas burner
- Wire for soldering of aluminium
The wire I ordered on Aliexpress. It is inexpensive. For 20 bars, 50 cm long and 2mm thick, I gave $ 4.90.
The burner can also be ordered in China. My burner, designed specifically for soldering low-temperature solders. The heating temperature of 1300 C. Burner bought for $ 8.
Before soldering a broken part, I strongly recommend you to practice on scraps of tubes. You have to learn and understand when the part is sufficiently warmed up, so that it can be soldered and at the same time, you need not to overheat the part. Otherwise it can be weeded.
I trained on trimming the tube 8mm. Made 2 cuts and began to weld. The first attempt failed. I overheated the part and the cut turned into a large hole.
The second attempt was more successful. However, there were small swellings on the tube. But they can be easily cleaned with sandpaper.
Now I will try a more complex kind of spikes. I will try to solder 2 tubes. To do this, cut the tube at an angle and fixed them.
Solder spread over the seam and got a strong connection. It remains to warm the bottom seam.
After welding, I cleaned the corner from the remnants of flux and aluminum influx. It turned out quite a beautiful connection.
Now I will check on durability. I broke the connection. I warmed up lower seam weakly and it cracked, but the upper seam was very strong. The crack went along the seam, she went to the side.
Next, I'll try to solder a profile aluminum pipe. The walls are thicker than the previous tube, so you will need to warm it up more longer. I warmed the profile weakly and hurried to apply solder. The result was these ugly swells. Then I increased the power of the burner and warmed the solder a little more. it melted and spread over the part and filled the cut.
Cleaned up the soldering place.The seam was excellent. If you will clean it with a smaller sandpaper, it will become almost invisible.
Finally, I decided to try to solder the steel screw and nut. The connection was very strong.
I tried to Unscrew the nut with pliers. As a result, only destroyed the thread of the bolt, and the nut remained in place.
When soldering, I noticed that the color of the flame can determine whether the item warmed up or not. The flame of the burner is blue, and when the part warms up, the flame becomes red. This is the best moment for the application to apply the solder.
I liked the method very much. Personally, when I learned about such a simple and affordable method of soldering, i was incredibly surprised. Now i have new ideas for my homemade products.
That's all Friends! Best wishes!
See you soon!