Patented Burner Technology with the Potential to Revolutionize Flame Treatment Processes
Extensive portfolio of patented burners suited to preheat welding, postweld heat treatment, flame straightening, flame hardening, flame brazing, spray and fuse coatings, and hot forming.
State-of-the-Art Burner Technology Supporting Manual and Automated Operations
Precision metal fabrication often calls for special flame heating solutions with the potential to optimize heat treatment outcomes, productivity and cost efficiency. Standard, off-the-shelf burners are often an unsatisfactory compromise. We developed our pioneering LINDOFLAMM® portfolio of flame solutions to meet the most demanding challenges in preheating, postheating, flame straightening, flame hardening, flame brazing, fusing and hot forming.
The shapes, capacities and gas supply of these special burners are adapted to your individual fabrication requirements, scaling from manually guided torches to a fully mechanized solution that is designed and built specifically for your automated flame heating process flow.
LINDOFLAMM Benefits at a Glance
High productivity thanks to optimum heat transfer
Ease of use - can protect material integrity
Less rework and re-conditioning of products
Reduced risk of hydrogen embrittlement
Most effective with acetylene as fuel gas
Heating time reduced by up to 20%
Rapid annealing of desired areas
Cost efficiencies thanks to economical use of gas
Burner design adapted to your demands
Customized gas supply solutions
Support for mechanized operations
How Do LINDOFLAMM Burners Work?
LINDOFLAMM burners use injector technology, which creates a Venturi effect to mix the two gases, compressed air or oxygen, and acetylene. By passing the incoming compressed air or oxygen through a restriction, the exact amount of the acetylene is constantly drawn into the air flow. This makes our patented LINDOFLAMM flame solutions an extremely precise, safe choice.
Why Use Acetylene for Flame Treatment?
Our innovative LINDOFLAMM burners capitalize on the powerful heat delivery properties of acetylene (C2H2). Of all fuel gases, acetylene produces the highest flame temperatures (up to 3160°C) for rapid and concentrated heating. The unique temperature distribution in an acetylene flame means that most of the energy is contained within the primary flame cone (also known as the inner cone), allowing for precise heating. In addition, acetylene has the highest flame propagation rate, enabling higher thermal efficiency.
It is also easier to set an accurate, consistent flame condition with acetylene. It uses less oxygen than LPG fuel gases and produces less carbon dioxide and water vapor. The low level of moisture produced makes acetylene very useful for low-level metal preheating applications before welding, especially in the fabrication of high-strength steels.
The precise focus of the acetylene flame also makes it highly suitable for heating a small area of metal quickly - ideal for applications such as bending and hardening selective areas. Even when used with air, acetylene produces a high-temperature flame with a very sharp focus. This makes it suitable for applications such as heating in automatic brazing systems.
Leveraging this high temperature and heat intensity of acetylene, our LINDOFLAMM burners have the potential to dramatically accelerate heating process times.
LINDOFLAMM Burner Design and Options
LINDOFLAMM® Manual Burners
Our LINDOFLAMM portfolio of manual burners supports a broad range of flame heating applications, including flame straightening, flame hardening, hot forming, preheating prior to welding and postweld heat treatment. The flame is used for melting purposes in flame brazing and for fusing purposes in the case of flame-sprayed coatings.
LINDOFLAMM burners run on acetylene as the fuel gas. This can be mixed with oxygen for high flame temperatures or with compressed air for mild, intense heat input with a lower risk of backfiring.
LINDOFLAMM® Automated Burners
Our LINDOFLAMM special burners are available with self-igniting nozzles using acetylene and compressed air to support partially and fully automated flame heating processes. To support different levels of automation and different welding requirements, our LINDOFLAMM portfolio extends from mechanized torches with standard gas control equipment to fully automated solutions.
With mechanized systems in particular, it is essential that the burner design be customized to meet your requirements and that the heat delivery be precisely matched to your workpiece. Our engineers will personally check and clarify the prerequisites and design at your site to help you seamlessly integrate the gas burner of your choice into your production line.
LINDOFLAMM® Flex Line
Our LINDOFLAMM flex line gives operators more flexibility and control over adjustments to both preheating and postweld heat treatments. LINDOFLAMM flex line comes with flexible hoses so you can capitalize on new flame heating opportunities that call for precise heating of unusual dimensions or complex geometries.
All-round Offering with Expert Support
Repair and rework in metal fabrication can be costly and time-consuming. With Linde at your side, you benefit from decades of experience and a proven track record. Complementing our broad range of special burners, our engineers can support you with their in-depth know-how and application excellence, helping you select the optimum gas supply system, setup and parameters.
Contact your local Linde representative to check availability of our LINDOFLAMM special burners and fuel gases in your region.
Our pioneering LINDOFLAMM burner technology was developed specifically to enable precision manufacturing processes. These tailored preheating solutions enable you to optimize productivity and increase efficiency for lower costs and more robust quality. Our LINDOFLAMM special burner portfolio includes everything from manually guided torches to fully mechanized solutions for automated manufacturing.
