Advanced Vacuum Laser Welding Machine
Vacuum laser welding machine is an advanced equipment for laser welding in vacuum environment, which combines laser welding technology and advantages of vacuum environment. It is mainly used for precision welding of high requirement materials.
Description
Vacuum Laser Welding Machine Introduction
Working principle of vacuum laser welding machine
1. Vacuum environment:
The welding cavity is evacuated (usually 10-3 ~ 10- " Pa) to reduce the scattering and oxidation effects of air on the laser beam.
Inert gas (e.g. Ar, He) can be introduced to further protect the weld.
2. Laser welding:
Using fiber laser, YAG laser or disc laser, the high energy beam is focused to achieve welding.
Can be paired with a mirror system (high speed scanning) or fixed optical path (deep welding).
Vacuum Laser Welding Machine Applications
Aerospace: engine blades, spacecraft fuel tank welding (titanium alloy, nickel base alloy)
Electronic semiconductor: precision sensor, chip packaging (copper, gold and other difficult to weld materials)
Medical devices: titanium alloy bone nails, surgical instruments (non-contaminated welding)
New energy: welding of power battery tabs and fuel cell bipolar plates
Research fields: New material development (such as superconducting materials, metal glass welding)
Vacuum Laser Welding Machine Details
Unique Features of Vacuum Laser Welding Machine
| Advantages | Detailed Advantages |
Application impact |
|
Non-oxidizing welding |
The vacuum environment completely isolates oxygen, avoids metal oxidation and improves the purity of weld |
Suitable for titanium alloy, aluminum alloy, high temperature alloy and other active metals |
|
Higher Welded seam quality |
Reduce pores, cracks and impurities, improve compactness and mechanical properties |
Aerospace, medical equipment and other high standard industries |
|
Deeper welding thickness |
The laser has a stronger penetration ability in vacuum environment and can achieve deep welding (deep width ratio up to 10:1) |
Suitable for thick plate welding, precision deep seam welding |
|
Small thermal deformation |
The laser energy is concentrated, the heat affected zone (HAZ) is small, and the workpiece deformation is very low |
Precision electronic components, fine structure welding |
|
No auxiliary gas pollution |
Traditional laser welding requires argon and other protective gases, vacuum welding completely does not need, reducing the cost |
Reduce gas consumption and improve process stability |
| Weldable difficult to weld materials |
Suitable for high reflectivity materials (copper, gold), high melting point materials (tungsten, molybdenum) |
Semiconductor, new energy battery welding |
|
High degree of automation |
High precision automatic welding is realized by combining robot and CCD vision positioning |
Automobile batteries and aerospace components are mass produced |
Typical application comparison (vacuum laser welding vs. ordinary laser welding)
|
Comparative items |
Vacuum laser welding |
Ordinary laser welding (atmosphere/protective gas) |
|
degree of oxidation |
Almost zero |
It may be affected by the purity of the protective gas |
|
weld strength |
Higher (closer to the parent material) |
It may be due to oxidation and pore reduction |
|
Applicable materials |
Titanium alloy, high temperature alloy, copper, gold and other difficult to weld metals |
Ordinary steel, stainless steel, etc |
|
depth of weld |
Deeper (vacuum enhanced laser penetration) |
Limited by the plasma shielding effect |
|
Equipment costs |
Higher (requires vacuum system) |
lower |
|
production efficiency |
Suitable for high precision, high quality requirements |
Suitable for general industrial welding |
Vacuum laser welding machine is becoming a key technology in high-end manufacturing industry because of its characteristics of no oxidation, high precision and high strength
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