Скачать или смотреть What does travel speed do for welding?

1. Uniform Heat Input
Travel speed directly affects the heat input to the weld.
If the speed is too slow, excessive heat can lead to:
Over-penetration.
Distortion of the base metal.
A larger heat-affected zone (HAZ), weakening the material.
If the speed is too fast, insufficient heat input can cause:
Poor fusion between the base metal and filler material.
Undercutting or lack of penetration.
Porosity and other weld defects.

2. Consistent Weld Bead Size
Travel speed ensures the bead size remains uniform.
Slow speed creates a wide, bulky bead that may not meet design specifications.
Fast speed results in a narrow, inconsistent bead that lacks structural integrity.

3. Control Over Metal Deposition
A consistent travel speed ensures even deposition of filler material.
Uneven speed leads to irregularities in the weld, such as overlaps or gaps.

4. Minimizing Defects
Pores, inclusions, and cracks can form due to inconsistent travel speed affecting cooling rates or introducing contaminants.
Proper speed helps ensure a steady pool of molten metal and controlled solidification.

5. Visual Appeal
Uniform travel speed leads to aesthetically pleasing welds with consistent ripples and smooth transitions.
Especially important for welds that are visible in the final product.
Best Practices:
Match travel speed with the welding process, material type, thickness, and position.
Use a stable hand or automation (e.g., welding robots) for precision.
Practice monitoring and adjusting speed as part of welding training.