Our experts would be delighted to talk you through the benefits of acetylene with an advanced burner system.
Flame Hardening with LINDOFLAMM Burners
Advanced Burner Technology for Hard, Wear-resistant Surfaces
Our advanced LINDOFLAMM® burner technology gives you hard, wear-resistant surfaces offering improved fatigue strength through localized hardening effects and controllable hardening depth.
Dedicated Burners and Supporting Services for Your Flame Hardening Applications
Flame hardening involves rapidly heating a metal and then cooling it. The aim is to harden the metal while making it malleable for subsequent working. It requires the direct impingement of a high-temperature flame from a suitably designed and positioned burner with quenching capabilities. This process is often used on the tooth flank of a gear wheel or the surface of a rail.
Flame hardening is suited to:
- Low/medium carbon steels (depending on the required surface hardness and core properties)
- High carbon steels (although flame hardening may increase the risk of cracking so careful control is required)
Advantages of Flame Hardening
Flame hardening offers several advantages. Although this highly skilled process cannot be automated as easily as other heat treatment steps, it allows for the short-term application of high-intensity heating for localized hardening effects and controllable hardening depth. This imparts a hard, wear-resistant surface to the component whilst improving the fatigue strength through the development of residual surface compressive stresses. Flame hardening heats and quenches the surface only, thus minimizing heat treatment distortion and improving the overall resistance of the metal component.
Capitalizing on the Benefits of Flame Hardening with Advanced Burner Technology
Our range of LINDOFLAMM special burners are the ideal tool for flame hardening applications. These hardening burners include an integrated water shower to cool down the material after it has been heated to the specified hardening temperature.
LINDOFLAMM for Flame Hardening: Benefits at a Glance
- Rapid annealing of desired material areas
- Minimal heating of surrounding material with acetylene as fuel gas
- Quench hardening upon effective cooling
- Burner selection adapted to your needs
- Special burners with integrated water shower
- Customized gas supply solutions
Recommended Gases for Flame Hardening with LINDOFLAMM
Achieving a very high, controlled temperature is key in flame hardening. As a fuel gas, acetylene has proven to have the best heating properties for this process. Mixed with oxygen, the acetylene flame can reach a temperature of 3160°C (5720°F). This makes acetylene the fuel gas of choice for our LINDOFLAMM special burner portfolio.
Full Service Offering for Flame Torches
Positioned at the forefront of process innovations and application expertise for flame hardening, we support our special LINDOFLAMM burners with a range of complementary services. This includes advice and help, covering everything from the flame hardening process to more general parameters like the setup of your gas supply system.