Welding seams in manual arc welding are beautiful if you follow a few rules. The first step is to correctly select the welding current, the angle of inclination of the electrode and a uniform electrode guidance speed. Compliance with the uniformity of the width of the weld.
I will show you a simple method of welding seams, in which the width is uniform, plus the formation speed will be the same, which means the seam will turn out to be beautiful with dense flakes. Let's go, don't switch!
Let's imagine that this track of discs is a beginner's weld. It will be uneven in width, and often goes away from the straight line. Using the example of a track made of discs, I will first give the theory of correct welding technique.
We light the electrode, form the weld pool and this is where our trick begins.
When welding a seam, we are not looking at the entire width of the seam. and focus on its left edge. The required current, of course, has already been selected. We look at the left edge of the seam and try to make it in a straight line.
The arc illuminates for us at least a couple of centimeters of the left edge, which means that we constantly make a straight line throughout this distance, and so on along the entire length. Cook, look at the left edge and try to make it as straight as possible.
With this method, there will be a uniform welding speed and the right edge of the seam will also go in a straight line, almost the same as the left one. Well, now let's cook in practice.
I will take a piece of the channel and apply a weld seam across our method, controlling the straightness of the left edge. We have no visible beacons from which to start, we will try to cook smoothly and beautifully.
I cook with 3 mm ANO-21 electrodes with rutile coating. Welding current approx. 110 amperes, polarity reversed, plus on the electrode.
We are waiting for our seam to cool down a little, although for safety reasons it is necessary to wait for the welding seams to cool completely before tapping the slag.
Let's see what happened. The seam lay exactly across the channel, as we wanted. The left seam edge is as straight as possible. Only in one place there was a slight narrowing of the uniform width of the seam, otherwise everything is fine.
The scales are small, since the speed was uniform, the right side of the seam also runs almost in a straight line. We finish the seam with a crater filling. Everything worked out as it should.
Friends, plus to the article and photos, I shot a detailed video with this welding method. Be sure to look for a complete picture of the process.