Bevel angle of the V-groove
The bevel angle of the V-groove is the angle between the two side faces of the joint. A small bevel angle (less than 60°) results in a fine, closed joint and improves mechanical strength.
Physical-Chemical Mechanism of Action
The bevel angle of the V-groove influences the structure formation in the weld. A smaller bevel angle (less than 60°) results in a denser, more closed joint, since the metal can compress better.
Metallurgical Relevance & Welding Risks
An overly large bevel angle (more than 60°) can lead to an open, unclosed joint. This increases the risk of porosity and reduces the mechanical strength of the weld. An overly small bevel angle can lead to distortion or cracks.
Workshop Practice & Instructions
For an optimal joint, you should maintain a bevel angle of 60° to 75°. This ensures a tight, closed joint and improves the mechanical strength of the weld. When setting up the welding machine, use the appropriate setting for the bevel angle.