Aluminum Brazing Furnace for Radiator and Heat Exchanger Manufacturing

The SUNHOPE Aluminum Brazing Furnace is designed for the continuous production of aluminum radiators, condensers, intercoolers, oil coolers, and other brazed heat exchangers. Combining precise temperature control, a stable nitrogen atmosphere, and adjustable conveyor speed, the furnace helps manufacturers achieve consistent brazing quality while maintaining high production efficiency.

With more than 15 years of experience in radiator and condenser manufacturing, SUNHOPE understands the practical challenges involved in aluminum brazing, including joint consistency, oxidation control, and production throughput. This experience has been incorporated into the design of our Continuous CAB Brazing Furnace.

In aluminum heat exchanger production, temperature stability is often more important than simply reaching the target brazing temperature. Even small temperature fluctuations can affect filler metal flow, resulting in weak joints, excessive brazing material consumption, or product distortion.

The SUNHOPE Aluminum Brazing Furnace utilizes a multi-zone heating system with precise temperature control to maintain a stable brazing environment throughout the production cycle.

• Brazing temperature range: 600–650°C

• Temperature accuracy: ±3°C

• Uniform heat distribution across the brazing zone

This level of control is particularly important when producing automotive radiators and condensers where consistent brazed joints directly affect pressure resistance and product durability.

Different heat exchanger designs require different residence times inside the furnace. The continuously adjustable conveyor system allows operators to optimize the brazing cycle according to product specifications and production targets.

• Adjustable speed: 200–1500 mm/min

• Smooth and stable operation

• Suitable for a wide range of radiator and condenser designs

The conveyor is manufactured from 316L stainless steel mesh, providing excellent resistance to heat and long-term wear under continuous operating conditions.

Oxidation is one of the most common factors affecting aluminum brazing quality. To minimize oxidation during the brazing cycle, the furnace operates under a controlled nitrogen atmosphere.

• Nitrogen purity: ≥99.9995%

• Nitrogen consumption: 35–45 m³/h

A stable nitrogen atmosphere supports uniform filler metal flow and reliable joint formation, helping manufacturers achieve cleaner brazed surfaces and improved leak resistance.

The furnace adopts a continuous tunnel structure that integrates drying, heating, brazing, and cooling processes into a single production flow.

Key performance data include:

• Furnace startup time: 0.5–1 hour

• Product heating cycle: 2–3 minutes

• Air cooling system

• Drying zone power: 103.45 KW

The continuous design reduces manual handling and supports efficient large-scale production of aluminum heat exchangers.

The furnace is equipped with a PLC-based control system that allows operators to monitor and adjust key production parameters in real time.

Functions include:

• Temperature monitoring

• Conveyor speed adjustment

• Process parameter management

• Alarm and safety protection

The control system helps improve process consistency while reducing operator workload.

The SUNHOPE Continuous CAB Brazing Furnace is suitable for manufacturing:

• Aluminum Radiators

• Automotive Condensers

• Intercoolers

• Oil Coolers

• Charge Air Coolers

• Evaporators

• HVAC Heat Exchangers

• Industrial Cooling Components

The furnace can accommodate workpieces up to 250 mm in height and can be customized according to specific production requirements.

Production requirements vary from one manufacturer to another. SUNHOPE provides customized furnace configurations based on factory layout, production capacity, product dimensions, and automation requirements.

Whether you are establishing a new radiator production line or expanding an existing heat exchanger facility, our engineering team can help develop a solution tailored to your manufacturing objectives.

SUNHOPE is more than an equipment supplier. For over 15 years, we have been involved in radiator and condenser manufacturing, equipment sourcing, and factory setup projects worldwide.

Our team understands the realities of production, from core assembly and brazing quality control to equipment maintenance and production efficiency. This practical experience enables us to provide solutions based on real manufacturing needs rather than equipment specifications alone.

In addition to Aluminum Brazing Furnaces, we supply complete radiator and condenser production lines, including core assembly machines, fin machines, expansion machines, leak testing equipment, and CKD component solutions.

By combining manufacturing experience with technical support, SUNHOPE helps customers build reliable and efficient heat exchanger production operations.