1. Technical Principles and Process Advantages

Laser hardening is an advanced surface enhancement technique for metal materials. The core feature of this technology is the use of a high-energy-density laser beam as the heat source. The laser beam, generated by the laser generator, is transmitted and focused through a precise optical system, forming a highly energy-dense spot that enables accurate heat treatment of the metal substrate surface. This process significantly outperforms traditional heat treatment methods such as flame hardening and medium- and high-frequency induction hardening in terms of comprehensive performance.

2. Core Process Features

1. Ultra-High Hardness Performance

The surface hardness after laser hardening is significantly higher than that of conventional heat treatment processes, with hardness increases ranging from 5% to 20%. This notable enhancement in hardness is primarily due to the formation of fine-grain martensitic structures during the rapid heating and cooling process of the laser.

2. Precise Control of Hardened Layer Thickness

The effective thickness of the hardened layer is precisely controllable within a range of 0.2-1.0mm, with the single hardened band width ranging from 1.5 to 60mm. Multi-pass overlapping treatment is supported, which enables uniform hardening over a large area.

3. Minimal Heat Affected Zone and Deformation

The heat-affected zone (HAZ) formed at the interface between the hardened layer and the base material is extremely small, typically ranging from 0,3 à 1,5 mm. This localized heat input characteristic effectively controls the overall deformation of the workpiece, making it particularly suitable for surface strengthening of precision parts.

4. Flexible Process Implementation

The working distance between the processing head and the workpiece surface is maintained in the range of 100-300mm, providing ample space for process implementation. This technology supports both localized precision hardening and customized heat treatment for complex geometries, showcasing outstanding process flexibility and controllability.

3. Key Advantages of Technology Implementation

The primary advantage of laser hardening technology lies in its precise energy control capabilities. The precisely shaped laser beam possesses unique properties such as high energy density and excellent directionality, enabling:

• Precise control of heating depth
• Uniform temperature field distribution
• Rapid heating and cooling cycles
• Repeatable process quality

Through continuous technological innovation and process optimization, Greenstone-Tech is constantly enhancing the performance of laser hardening technology. We provide customers with more accurate and efficient surface strengthening solutions that meet the diverse demands for component performance enhancement across various industrial sectors.