Manual Laser Welding: Innovations and Safety Gear

Innovations and Safety Challenges in Manual Laser Welding

The rise of manual laser welding is transforming industrial practices while exposing operators to new health risks. Although these processes attract interest due to their efficiency and performance across a wide range of materials, they also highlight the limits of current personal protective equipment and the need for evolving standards.

Evolution of Portable Laser Welding Systems

The industry has recently seen massive adoption of portable equipment for fiber laser welding. This shift is driven by several operational advantages sought in modern workshops: a significant reduction in overall operating costs, simple installation with minimal site downtime, intuitive use even for less experienced operators, and easy adaptation to confined or complex environments.

These systems drastically reduce the use of consumables and minimize post-weld finishing operations. Manufacturers benefit not only from optimized productivity but also from greater flexibility when working on parts with varied geometries or made from dissimilar materials. Portable laser welding enables the efficient assembly of both similar steels and different metals—regardless of their thickness.

Despite this technological progress, many industrial players still face a major concern: ensuring complete safety during manual operation remains challenging. The operator’s proximity to the laser beam’s focal point—often between 100 and 200 mm—significantly increases exposure to direct radiation as well as strong reflections generated by the molten metal surface. These factors require protection far more rigorous than what is typically used for conventional welding.

Current Safety Standards for Laser Welding

In response to these challenges, many naturally turn to existing standards governing welder protection. Several texts currently define ocular and facial safety requirements in this context:

- ISO 16321-1 specifies the essential physical and optical criteria for all protective equipment used in general professional environments.

- ISO 16321-2 complements this standard with additional requirements related to material selection, design, and mandatory markings, particularly for mechanical hazards such as hot particle projection or flying debris.

- ISO 16321-3 details the requirements for mesh-type systems designed to protect the eyes and face.

However, these standards explicitly exclude any reference to laser-specific hazards. For optical radiation emitted by a powerful industrial laser—such as those used in portable welding—two other standards apply:

- EN 207 regulates the use of specific ocular filters against accidental laser beam emissions; each filter receives an LB rating depending on the radiation characteristics.

- EN 12254 applies to the protective screens installed around laser workstations, assigning an AB rating based on the hazard type.

None of these standards explicitly require a device that covers the entire facial area against laser risks. Users are therefore forced to combine multiple pieces of equipment: a traditional certified helmet (for protection against projections and impact) worn together with dedicated laser-filter safety glasses.

This multi-equipment approach leads to discomfort and, more importantly, potential human error: it becomes easy to “forget” the laser-safety glasses under a conventional helmet during repeated handling. As long as this regulatory gap persists between the requirements of conventional manual welding and the specific hazards of powerful industrial lasers, no truly satisfactory market solution exists to combine simplicity, ergonomics, and total safety.

Towards an Integrated PPE Solution for Laser Welding

The rapid evolution of these processes requires specialized suppliers to rethink the development—and future certification—of a combined solution that radically simplifies welders’ daily work while ensuring their physical safety against the multiple hazards of the technique.

Designing an Innovative Laser Welding Helmet

To address this growing need, specialized suppliers have mobilized their R&D teams to design a groundbreaking piece of equipment: a helmet integrating an advanced filter capable of effectively blocking the various harmful radiations associated with industrial laser beams (UV, IR…), while preserving the clear vision essential during operation.

The main innovation lies in integrating the filter directly into the helmet (no longer only into separate eyewear). This multilayer filter, produced through successive deposition of technical coatings under controlled atmosphere, provides:

- Highly precise selective blocking around hazardous wavelengths (notably D LB9 @ 1070 nm),

- Controlled attenuation according to different “Shade” values,

- Superior mechanical and chemical resistance thanks to its intrinsic hardness,

- Adaptability to specific needs expressed by field operators (intermediate shades requested directly by welders).

Unlike commonly used materials until now (polycarbonate, ABS, or carbon fiber), which deform rapidly under intense irradiation due to diffuse infrared heat, manufacturers—after a series of rigorous comparative tests—have selected a new-generation thermoset plastic. It combines high thermal and mechanical resistance with lightness, ensuring optimal wearing comfort even during several hours of continuous use.