LHP 109 Welding Trainer

The A21 Welding Trainer is a state-of-the-art welding simulator designed to enhance vocational training by offering a modern, cost-effective, and safe training environment. Utilizing virtual and augmented reality technologies, the A21 provides a realistic, immersive experience that significantly reduces training costs and risks associated with traditional welding methods.

Key Benefits:

  • Safety and Cost Efficiency: Eliminates the use of real power, electrodes, and welding gases, creating a risk-free and cost-free training environment.
  • Time Efficiency: Reduces training time by up to 40% compared to traditional methods.
  • Comprehensive Training: Provides realistic 3D simulations for Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW/MIG/MAG), and Gas Tungsten Arc Welding (GTAW/TIG) with interchangeable torch replicas.


  • Record and Replay: Real-time video and motion tracking allow for recording and playback from multiple angles, facilitating detailed analysis and feedback.
  • Didactic Platform: Offers a robust theoretical and practical training platform, with customizable welding parameters and exercises compliant with international welding standards (EN ISO 6947, NEN-EN 287, AWS ASME section IX).
  • Evaluation and Reporting: Tracks performance in real-time, generating detailed reports and 3D images of weld quality, including porosity and penetration scans.
  • Customizable Welding Pieces: Supports integration of user-defined joint types and pieces for specialized training scenarios.
  • Classroom Management: Networked setup allows centralized management of student progress and performance data, enhancing instructional capabilities.

The A21 Welding Trainer’s advanced features and comprehensive training modules make it an indispensable tool for vocational training institutions, ensuring high-quality education while reducing training time and costs. Its innovative approach prepares students effectively for real-world welding challenges, ensuring they meet industry standards and expectations.

Polytech S.A. has introduced a groundbreaking educational tool designed to transform the vocational training landscape: the LHP 109 Welding Trainer. This state-of-the-art welding simulator, known as A21, offers an innovative approach to training welders, combining virtual and augmented reality to provide a comprehensive and efficient learning experience.

Safety First

The A21 Welding Trainer creates a risk-free environment for beginners by eliminating the need for real power, electrodes, and welding gases. This not only enhances safety but also makes the training process more accessible and less intimidating for new students.

Cost-Effective Training

Traditional welding training can be costly due to the consumption of materials and the wear and tear on equipment. The A21 system reduces these costs to zero by simulating the welding process, allowing students to practice without consuming real consumables.

Efficient Learning

By utilizing statistical performance measurements, the A21 simulator enables students to learn up to 40% faster than they would with traditional welding equipment. This accelerated learning process helps students become proficient welders in a shorter time frame.

Comprehensive Assessment

The A21 system provides detailed evaluations, helping instructors identify students with a natural aptitude for welding and those who may need additional support. This ensures that resources are allocated effectively and students receive personalized training.

Real-Time 3D Video and Motion Tracking

The A21 Welding Trainer uses advanced 3D real-time video technology and motion tracking to replicate a real-life welding environment. The system records and replays the welding process from any angle, offering a detailed view of the hand motions and welding steps. This feature aids both students and instructors in evaluating performance and making necessary adjustments.

Virtual and Augmented Reality

The integration of virtual reality (VR) and augmented reality (AR) technologies provides an immersive training experience. Students can interact with the welding environment in real-time, gaining a realistic understanding of the welding process without the associated risks.

Multiple Welding Techniques

The A21 Welding Trainer supports training in three different welding techniques:

  • SMAW (Shielded Metal Arc Welding)
  • GMAW/MIG/MAG (Gas Metal Arc Welding)
  • GTAW/TIG (Gas Tungsten Arc Welding)

Each module includes corresponding torch replicas that are easily interchangeable, allowing for seamless transitions between different types of welding training.

Extensive Exercise Library

The simulator offers over 50 preset exercises covering various joint types, welding positions, and materials, including carbon steel and aluminum. These exercises are designed to meet international welding standards (EN ISO 6947, NENN-EN 287, AWS ASME section IX) and can be customized to suit specific training needs.

Telemetric Performance Tracking

During each welding trial, the A21 system records telemetric data, such as welding distance, torch speed, and angles of travel. This data is used to generate detailed performance reports, highlighting deviations from preset criteria and helping students improve their techniques.

3D Imaging and Analysis

In addition to performance metrics, the A21 trainer provides 3D images of the welded pieces, porosity scans, and penetration scans. These visual aids allow instructors to assess the quality of the welds at a microscopic level, ensuring students achieve high standards of craftsmanship.

Network Integration

Multiple A21 trainers can be connected via an Ethernet network to a central Teacher PC, facilitating comprehensive class management. Instructors can track student progress, manage sessions, and store performance data using a relational database application compatible with Windows 10 or higher.

Customizable Training Pieces

The A21 system supports the integration of customer-defined welding pieces. Instructors can provide designs in AutoCAD format, which Polytech will transform into 3D simulations at no additional cost for three years from installation.

The LHP 109 Welding Trainer by Polytech S.A. is a revolutionary tool that enhances the quality and efficiency of welder training. By leveraging advanced technologies and offering a safe, cost-effective, and comprehensive training solution, the A21 system prepares students for successful careers in welding with unmatched precision and expertise. Whether you are an educational institution or an industrial training center, the A21 Welding Trainer is an invaluable investment in the future of welding education.

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