A 1400°C atmosphere brazing furnace helps German new energy equipment manufacturers achieve precision brazing of high-temperature alloys

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A 1400°C atmosphere brazing furnace helps German new energy equipment manufacturers achieve precision brazing of high-temperature alloys

1. Client Introduction

Client Name: A Germany-based new energy power equipment manufacturer
Industry: New energy power generation, Energy storage equipment, High-temperature alloy precision manufacturing

Core Needs: Conduct vacuum/atmosphere-protected brazing for nickel-based high-temperature alloys such as Inconel and Hastelloy applied to core components of large power generation equipment and energy storage heat exchange devices. The production requires strictly controlled inert or reducing atmospheres, with welds free of oxidation and porosity and featuring ultra-high compactness.

This client is a professional supporting manufacturer for many well-known German new energy power equipment brands, specializing in welding, forming and assembly of high-temperature alloy sheet metal and precision structural parts for power generation and heat exchange systems. The company previously adopted traditional manual flame brazing and large-scale vacuum brazing furnaces, which brought multiple production pain points. Manual brazing relies heavily on senior technicians, leading to unstable product quality and low repeatability. Large vacuum brazing furnaces require huge upfront investment and high daily operating costs; when processing small and medium-sized precision parts, they also face the problem of low operational efficiency due to oversized equipment.

The client was in urgent need of a medium-sized high-temperature atmosphere-controlled brazing furnace. The equipment needs to melt and spread nickel-based brazing filler metals at a temperature below 1400°C, fully isolate air to prevent workpiece surface oxidation. Meanwhile, it should feature a reasonable overall size and flexible operation, perfectly adapting to the enterprise's multi-variety, small-batch and customized production mode of new energy equipment parts.

2. Equipment Introduction
Equipment Name: High-Temperature Atmosphere Brazing Furnace
Product Model: PT-A1400-2000LDZ
Operating Temperature: ≤1400°C (Common Brazing Temperature: 1000～1250°C)
Furnace Chamber Dimensions: Customizable; this case uses 300×400×400mm (48L), accommodating a maximum workpiece size of 250×300×300mm
Furnace Chamber Material: High-purity alumina polycrystalline fiber, high temperature resistant, low heat capacity, energy-saving
Heating Element: High-quality silicon carbide rod (SiC), high temperature resistant, high efficiency and long lifespan. The four-sided layout ensures uniform temperature field inside the furnace.
Temperature Control System: PID+SCR programmable temperature control with 30-segment programmable function. The temperature control accuracy reaches ±1℃, and furnace temperature uniformity is ±3℃ (at 1200℃).
Atmosphere System: Fully sealed stainless steel furnace shell equipped with water-cooled sealed flange door. It is fitted with an air inlet (connectable to mass flow meter) and an exhaust port, which can be filled with high-purity Ar, N₂, H₂/N₂ mixed gas (reducing atmosphere). A vacuum pump set is optional, with the ultimate vacuum ≤5×10⁻².
Safety Design: Over-temperature alarm, thermocouple breakage protection, hydrogen leak detection (when using H₂), water pressure undercurrent protection, automatic exhaust interlock.
Control System: 10-inch touchscreen, capable of storing multiple brazing process curves, and real-time display of parameters including temperature, atmosphere flow rate, furnace pressure and vacuum level.

Special Features:
Built-in furnace oxygen analyzer (ppm level), which keeps the internal oxygen content below 50ppm throughout the brazing process.
Optional rapid cooling system, realizing fast cooling after brazing and effectively shortening the overall production cycle.
Programmable multi-segment atmosphere control, supporting fully automated processes: vacuuming → gas filling → heating → heat preservation → cooling.

This equipment is specially developed for precision brazing of high-temperature alloys, stainless steel, titanium alloys and other metal materials. It is widely applicable to new energy power equipment, nuclear energy, electronic packaging and other fields with strict requirements on welding quality. Its core advantages are reflected in three aspects: the maximum working temperature of 1400°C meets the melting requirements of most nickel-based brazing filler metals; excellent sealing performance and precise atmosphere control realize complete oxidation-free brazing; the medium-sized body strikes a perfect balance between processing capacity and operational flexibility.

3. Equipment Application

Specific Process: Vacuum/hydrogen atmosphere brazing of nickel-based superalloys
Workpiece Processed: Heat dissipation and heat exchange assembly parts for new energy power generation equipment
Solution Type: Nickel-based solder
Brazing Environment: Vacuum or high-purity hydrogen/argon mixture. The reducing atmosphere can efficiently remove oxide films on the workpiece surface.

4. Customer Feedback

*“We chose this 1400℃ atmosphere brazing furnace because it precisely fills the market gap between traditional manual brazing and large vacuum furnaces. The fully sealed furnace chamber matched with H₂/Ar mixed gas can stably control the oxygen content below 30ppm. The welded workpieces present a bright silver surface, so we no longer need post-processing procedures such as pickling and polishing. What we value most is its programmable multi-stage temperature control function. We can set the full automatic process of ‘vacuuming → gas backfilling → multi-stage heating → multi-stage holding → rapid cooling’ in advance. We only need to set parameters before off work and take out finished products the next morning, which greatly boosts our production efficiency.

In addition, the 1400℃ maximum temperature also reserves room for our future process upgrade, enabling us to use higher melting point brazing filler metals such as copper-based and palladium-based materials. Up to now, the equipment has run stably for 14 months, and the silicon carbide rod heating elements have never been replaced. The furnace interior is also very easy to clean. We sincerely recommend this furnace to all manufacturers engaged in new energy equipment and precision metal processing that need high-precision, small and medium-batch brazing work.”*

— Mr. Leo Weber, Welding Process Manager, a Germany-based new energy power equipment manufacturer

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A 1400°C atmosphere brazing furnace helps German new energy equipment manufacturers achieve precision brazing of high-temperature alloys

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