Automatic flame brazing is an industrial joining process where fuel gas flames (such as oxy-acetylene, oxy-propane, or natural gas) are automatically controlled by a machine to heat metal parts and melt a brazing filler metal so it flows into the joint by capillary action.
Unlike manual brazing, all key parameters are automated—flame position, heating time, rotation/indexing of parts, filler feeding, and often cooling—resulting in high consistency and repeatability.
Ketchan automatic flame brazing systems can be customized with different fixtures and equipment shapes to suit various customer products. This makes them ideal for mass production, where quality, stability, and cost control are critical. If you are looking for a suitable automatic flame welding system solution, contact us today. We are a dynamic technical team that can quickly provide you with the right welding solution.
Unlike manual brazing, all key parameters are automated—flame position, heating time, rotation/indexing of parts, filler feeding, and often cooling—resulting in high consistency and repeatability.
Flame Brazing Machines for Sale
Brazing Solutions for HVAC
We provide mature production brazing equipment for copper, aluminum, and stainless steel components in the HVAC industry to manufacturers of air conditioners, refrigerators, automotive refrigeration systems, water heaters, and other upstream parts suppliers.
Dual Three-Axis Turntable-Type Automatic Flame Brazing Machine for Continuous Production
The dual three-axis turntable-type automatic flame brazing machine integrates synchronized three-axis motion with a rotary indexing turntable to deliver high-throughput, consistent flame brazing for metal joints. Designed for industrial mass production environments, this system features automated flame control, PLC-based process management, and stable positioning for repeatable brazed connections across multiple
Dual Torch Turntable-Type Automatic Flame Brazing Machine for High-Volume Production
The dual-torch turntable-type automatic flame brazing machine is engineered for repeatable thermal joining in automated manufacturing environments that require high throughput, stable flame distribution, and efficient station cycle times. Featuring two synchronized flame torches mounted around a rotary indexing turntable, this brazing solution enables simultaneous heating at dual points, improving
Robotic Unloading Turntable Automatic Flame Brazing Equipment for High-Efficiency Production
Robotic unloading turntable automatic flame brazing equipment is an integrated production solution engineered for high-throughput, consistent flame-brazed joints, and minimal operator intervention. Combining a rotary indexing turntable with automatic flame brazing technology and a dedicated robot unloading station, this system efficiently handles part transitions, brazing cycles, and post-process removal. With
Robotic Turntable-Type Automatic Flame Brazing Machine for Flexible High-Throughput Production
Robotic turntable-type automatic flame brazing machine combines precision robotic manipulation with a rotary indexing platform to deliver a highly automated brazing solution suitable for high-mix and high-volume manufacturing. This integration significantly reduces manual intervention and enhances joint repeatability, making it ideal for assemblies requiring consistent brazed connections across a range
Brazing Solutions for HVAC
We provide mature production brazing equipment for copper, aluminum, and stainless steel components in the HVAC industry to manufacturers of air conditioners, refrigerators, automotive refrigeration systems, water heaters, and other upstream parts suppliers.
Dual Three-Axis Turntable-Type Automatic Flame Brazing Machine for Continuous Production
The dual three-axis turntable-type automatic flame brazing machine integrates synchronized three-axis motion with a rotary indexing turntable to deliver high-throughput, consistent flame brazing for metal joints. Designed for industrial mass production environments, this system features automated flame control, PLC-based process management, and stable positioning for repeatable brazed connections across multiple workstations. Suitable for brazing copper, brass, aluminum, and stainless steel components, it improves productivity and quality compared with manual or single-axis solutions.
Dual Torch Turntable-Type Automatic Flame Brazing Machine for High-Volume Production
The dual-torch turntable-type automatic flame brazing machine is engineered for repeatable thermal joining in automated manufacturing environments that require high throughput, stable flame distribution, and efficient station cycle times. Featuring two synchronized flame torches mounted around a rotary indexing turntable, this brazing solution enables simultaneous heating at dual points, improving production capacity while maintaining consistent brazed joint integrity. The integrated PLC control system coordinates torch actuation, station indexing, and safety interlocks—ensuring uniform flame application over a range of metallic workpieces used in HVAC, refrigeration, fluid control, and general metal fabrication sectors.
Robotic Unloading Turntable Automatic Flame Brazing Equipment for High-Efficiency Production
Robotic unloading turntable automatic flame brazing equipment is an integrated production solution engineered for high-throughput, consistent flame-brazed joints, and minimal operator intervention. Combining a rotary indexing turntable with automatic flame brazing technology and a dedicated robot unloading station, this system efficiently handles part transitions, brazing cycles, and post-process removal. With PLC-controlled sequencing and optional automatic feeding modules, it delivers reliable quality, repeatable temperature profiles, and improved production efficiency across a range of metallic components used in fluid systems, HVAC assemblies, valve manufacturing, and metal fabrication applications.
Robotic Turntable-Type Automatic Flame Brazing Machine for Flexible High-Throughput Production
Robotic turntable-type automatic flame brazing machine combines precision robotic manipulation with a rotary indexing platform to deliver a highly automated brazing solution suitable for high-mix and high-volume manufacturing. This integration significantly reduces manual intervention and enhances joint repeatability, making it ideal for assemblies requiring consistent brazed connections across a range of industry applications.
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Components of the system
Gas burners (single or multi-flame)
Automatic gas control valves
PLC / HMI control system
Rotary table or linear transfer system
Automatic filler feeding (ring, wire, or paste)
Safety systems (flame detection, gas pressure monitoring)
Features
Consistent joint quality
Precise heat control
Reduced labor dependency
High-throughput production
Repeatability for mass manufacturing
Applications
- High-Volume, Repetitive Metal Joining
Automated flame brazing is particularly well-suited for components that require consistent, repeatable brazed joints at medium to high production volumes. Automation ensures stable flame exposure, controlled heating cycles, and uniform filler metal flow, significantly reducing variability compared to manual brazing.
- Multi-Joint and Complex Geometry Assemblies
Many industrial components contain multiple brazing points or complex geometries that are difficult to heat uniformly by hand. Turntable-based systems, multi-axis linear mechanisms, and robotic flame positioning allow precise sequencing and orientation of parts, ensuring all joints receive controlled and adequate heat input.
- Production Lines Requiring Continuous Flow
Indexing turntables and dual-station layouts enable parallel operations such as loading, brazing, cooling, and unloading. This configuration supports continuous production flow and stable takt times, making automated flame brazing suitable for integration into modern manufacturing lines.
- Labor Reduction and Process Standardization
Automated flame brazing systems minimize dependency on skilled manual operators. Process parameters such as flame intensity, heating duration, part positioning, and cycle timing can be standardized and stored, enabling consistent output across shifts, plants, and global production sites.
Industries
HVAC and Refrigeration Industry
Automation ensures leak-tight joints, consistent capillary action, and high throughput required by mass HVAC production.
Automotive and Transportation Manufacturing
Robotic and turntable-based systems provide the repeatability and production efficiency demanded by automotive OEMs and Tier-1 suppliers.
Fluid Control and Valve Manufacturing
The ability to accurately control heat input is critical for maintaining dimensional stability and sealing performance in valve products.
Heat Exchanger and Thermal Equipment Production
Automation ensures uniform heat distribution, preventing distortion while maintaining strong, reliable joints.
Industrial Equipment and Machinery Components
Many general industrial components require brazed joints that are not economically feasible with welding or induction brazing.
Energy, Power, and Process Industries
The process provides a balance between joint strength, thermal control, and cost efficiency.
Automatic flame brazing vs. induction brazing
Item | Flame Brazing | Induction Brazing |
Heating method | Gas flame | Electromagnetic induction |
Heating speed | Medium | Very fast |
Capital cost | Lower | Higher |
Flexibility | Very high | Medium |
Oxidation risk | Higher (often needs flux) | Lower |
Best for | Large or complex parts | High-precision, high-speed |
FAQ
What materials can be processed using an automatic flame welding system?
- Copper & copper alloys
- Steel & stainless steel
- Aluminum (with special flux and flame control)
How does an automatic flame brazing system work?
- Part loading：Components (e.g., copper, steel, aluminum tubes) are loaded into a fixture or rotary table.
- Automatic positioning：Burners move to precise locations or parts index to fixed burners.
- Controlled heating：Flames heat the joint uniformly to brazing temperature (typically 600–900 °C, depending on material).
- Filler metal melting：Brazing alloy (ring, wire, or paste) melts and flows into the joint.
- Cooling & unloading：Parts cool naturally or with forced air before automatic unloading.
What are the advantages of automatic flame brazing equipments?
- ✅ High production efficiency
- ✅ Consistent joint quality
- ✅ Lower labor dependence
- ✅ Flexible for complex shapes
- ✅ Lower equipment cost than laser or induction (in many cases)
Why choose our automated flame brazing systems?
custom-designed
turnkey solution
integration with induction heating
global installations / industrial experience