Arc welding technique
When welding flat steel, the angle of inclination of the electrode should be about 80 to 90 degrees compared to the plane of the welded plate in the image below. With this angle slag welding will be pushed out of the welding pool.
1. The first is the angle of inclination of the electrode
When welding flat steel, the angle of inclination of the electrode should be about 80 to 90 degrees compared to the plane of the welded plate in the image below. With this angle slag welding will be pushed out of the welding pool.
It should be noted that the electrode holder is comfortable to start the movement, and should be tried in front of each weld to properly adjust the hand.
2. Next we pay attention to the length of the arc
The length of the arc is the distance from the electrode to the weld pool, so that the arc length is approximately equal to the electrode diameter. The theory is that in practice, the electrode will be depressed (as shown) and the puddle is also covered with a loose slag layer. To ensure the arc length is the electrode diameter, the flame length of the tank Optical soldering that we see is sometimes less than 1mm.
The Workers can evaluate arc lengths through hearing and arc 200 welding machine price. According to experience, the explosion of the arc sounds smooth, the light medium, not too bright or too dark is the length of the arc range is acceptable.
3. Maintain the angle of the electrode tip and the arc length
Arc welding is an extremely difficult method of welding, as during welding the electrode is melted and shortened. Maintaining the arc length and angle of inclination requires a high degree of welding skill, which must be mastered.
The arc length is so large that it can lead to unstable arc welding, defects such as overheating or burns are very likely to occur. The angle of inclination of the electrode should also be maintained during a welding cycle. The unsteady angle produces both slag in the weld.
Newcomers need to master these two basic techniques to begin building the foundation for more complex techniques.
4. Note the movement of the rod
When welding, the workers must know how to work together to make the movement of the rod in the direction. This greatly affects the good or bad quality of the weld.
Movement along the welding rod axis: This movement aims to maintain and adjust the arc length, at the speed equal to the flow velocity of the welding rod,
Movement along the weld shaft: In order to weld the weld lengths, this movement usually has a certain speed (weld speed) and greatly affects weld quality. Take a look at the article Common errors in arc welding to know exactly how to determine the proper welding velocity.
Horizontal movement (horizontal oscillation) works to ensure the width of the weld, there are many types of horizontal oscillation.
(Source: Sai of india)
