TILTING REVERBERATORY
MELTING FURNACE

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GM-J SERIES

Our GM-J Series aluminum gas reverberatory melting furnace, also known as a reverb furnace, is an excellent choice for large volume melting of scrap and ingots. This series features a hydraulic tilting system and is available with a single large melting chamber, or with a dual melting and holding chamber (recommended). This design can be adapted to your specific requirements. The innovative design offers ultra-high efficiency. Large, electric drive, charging doors allow for easy charging and cleanout access. Like all our Dynamo furnaces, the GM-J Series is controlled by a PLC and a large color HMI touch screen which runs a sophisticated program that optimizes performance, operation, and efficiency.

TECHNICAL OVERVIEW

GM‑J Series Tilting Reverberatory Melting Furnace Ideal for High‑Capacity Aluminum Melting

The GM‑J Series tilting reverberatory melting furnace is engineered for high‑capacity aluminum melting with exceptional thermal efficiency, fast melt rates, and clean metal output. Its wide, open melting chamber provides uniform heat distribution, allowing the furnace to process large volumes of aluminum ingots, sows, and scrap with consistent performance. The tilting mechanism enables smooth, controlled metal discharge, reducing turbulence and minimizing dross formation. With its robust refractory lining, high‑performance burner system, and automated control package, the GM‑J Series delivers reliable, continuous operation for foundries and die‑casting plants that require large melt capacities and stable temperature control. This furnace is ideal for facilities seeking maximum productivity, reduced fuel consumption, and high‑quality molten aluminum.

Choose a Tilting Reverberatory Furnace Over a Fixed or Stationary Melting System

Tilting reverberatory furnaces offer significant advantages in efficiency, metal cleanliness, and operational safety compared to fixed or stationary melting systems. The GM‑J Series uses a powerful burner configuration and optimized chamber geometry to achieve fast melting rates and uniform heat transfer. Unlike fixed furnaces that require manual ladling, the tilting design allows precise, low‑turbulence metal pouring directly into ladles or casting equipment. This reduces oxidation, improves metal purity, and enhances operator safety. The furnace’s closed‑door melting process minimizes heat loss and fuel consumption, while its large chamber accommodates bulky scrap and mixed feedstock. For high‑volume aluminum processors, a tilting reverberatory furnace provides superior performance, lower operating costs, and cleaner metal output.

Key Features and Benefits of the GM‑J Series Aluminum Tilting Reverberatory Melting Furnace

The GM‑J Series combines high‑capacity melting with advanced automation and durable industrial construction. Key features include a large reverberatory melting chamber, high‑efficiency gas burners, and a robust tilting mechanism for controlled metal discharge. The furnace’s closed‑door operation reduces oxidation and improves fuel efficiency, while its refractory lining is engineered for long service life under continuous operation. Automated temperature control ensures consistent melt quality, and optional metal‑handling accessories streamline integration with casting lines. With its high throughput, reduced emissions, and reliable performance, the GM‑J Series is an excellent solution for foundries and die‑casting plants focused on productivity, melt cleanliness, and operational efficiency.


SMALLER FOOTPRINT - BIGGER MELTING CAPACITY

This Furnace Takes Up Less Space.

Our multi-chamber design dramatically reduces the furnace foot print. By removing a wet bath charging well, and by adding more chambers we increase the melting to holding ratio to approximately 1:3 (even lower for non die casting applications). That means a substantial saving of valuable floor space in your facility and reduced operating cost.

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LASER LEVEL MONITORING

Precise and Dependable Molten Metal Level Measurement.

Probe type molten metal level sensors can corrode and be affected by dross buildup, and in time they can give back false readings. Our laser level system is no contact, precise, dependable, and durable, and offers long term maintenance free operation.

HIGH THERMAL EFFICIENCY BY DESIGN

We Add Multiple Layers of Insulation.

The result is excellent efficiency which means a furnace which not only burns less gas, but is actually not dangerous to touch.

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THICKER INSULATION

We Add Way More Insulation to Our Furnaces Than Most Manufacturers.

The result is even greater efficiency and a solid, sturdy construction which is hard to beat.

CHOOSE YOUR CONTROL SYSTEM

We Give You Options of PLC & HMI.

Select the control system that is best for you and easiest for your maintenance team.

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DUAL AIR BLOWERS

Two are Better Than One.

Using double air blowers gives us more flexibility and precision in the amount of air available for the melting and holding chambers at any given time. When balanced correctly they increase the efficiency of the furnace and reduce running costs.


VFD DRIVE BLOWER MOTORS

Better Efficiency and Lower Operating Cost.

Lots of air without control wastes a significant amount of energy. We use VFD Drives combined with Premium Inverter Duty Motors to give you greater RPM only when it is needed. All this translates into greater efficiency, lower operating costs, quieter operation, soft start and longer motor life. The advantage is clear. This is just one of the many ways we use to increase furnace efficiency, and reduce long term operating costs.

dynamo furnaces
dynamo furnaces

HIGH QUALITY COMPONENTS

We Use Brand Name Components You Know and Already Use.

We use only the finest quality components that are open source and readily available locally in your area, or from our online parts store.

REMOTE SERVICE

We Can Remotely Troubleshoot Your Furnace from Our Facility.

Our GM-J Series tilting reverberatory melting furnace include a Remote Connectivity Unit which allows our furnace technicians to remotely check the performance of the furnace, make any needed changes to the program or HMI, or to troubleshoot it directly from our service center. The customer is only required to connect the unit to the Internet via an Ethernet cable. We handle the rest.

dynamo furnaces
dynamo furnaces

INDUSTRY 4.0 REMOTE MONITORING

Remotely Monitor Your Furnace Performance From Any Device.

As an option, all our furnaces are available with Industry 4.0 remote performance monitoring units which feature a custom dashboard. You can not only monitor furnace performance, but you can be notified before an issue occurs. Included are condition based maintenance reminders and shift performance statistics. Minimize impact of emergencies and maximize furnace uptime, and productivity. See what is going on with the furnace and your production from any device, anywhere in the world.

SIX STANDARD SIZES

Flexible Range of Applications.

Available from a smaller 1100 lbs melting per hour all the way to 6600 lbs, the GM-J Series tilting reverbratory melting furnaces allow for a wide range of applications.

MELTING RATES RECOMMENDED FOR INGOT PRODUCTION AND OTHER NON DIE CASTING APPLICATIONS

Standard US / Imperial (Al) Metric (Al)
Model Holding Melting/h * Holding Melting/h *
GM-J-3300 3300 lb 1100 lb 1500 kg 500 kg
GM-J-4400 4400 lb 1650 lb 2000 kg 750 kg
GM-J-5500 5500 lb 2200 lb 2500 kg 1000 kg
GM-J-6600 6600 lb 3300 lb 3000 kg 1500 kg
GM-J-8800 8800 lb 4400 lb 4000 kg 2000 kg
GM-J-13000 13000 lb 6600 lb 6000 kg 3000 kg

MELTING RATES RECOMMENDED FOR DIE CASTING APPLICATIONS

StandardUS / Imperial (Al)Metric (Al)
ModelHoldingMelting/h *HoldingMelting/h *
GM-J-33003300 lb1100 lb1500 kg500 kg
GM-J-44004400 lb1450 lb2000 kg660 kg
GM-J-55005500 lb1830 lb2500 kg830 kg
GM-J-66006600 lb2200 lb3000 kg1000 kg
GM-J-88008800 lb2930 lb4000 kg1330 kg
GM-J-1300013000 lb4400 lb6000 kg2000 kg
DO YOU NEED

BIGGER CAPACITY?

Be Sure to Check Out of Mini Stack Melting Furnaces.

We can make this GM-J Series furnace with up to 55,000 lbs (25,000 kg) capacity.

Applications For The GM-J Series Aluminum Tilting Reverberatory Furnace

High‑Capacity Aluminum Melting for Large Foundries

The GM‑J Series is engineered for foundries that require high‑capacity aluminum melting with fast melt rates and consistent thermal performance. Its wide reverberatory chamber allows efficient heat transfer across large surface areas, enabling the furnace to process significant volumes of ingots, sows, and scrap. This makes it ideal for large‑scale operations where melt demand is continuous and production schedules depend on reliable, high‑throughput melting performance. The furnace’s robust construction and optimized burner system ensure stable operation during long production cycles.

Continuous Molten Metal Supply for Die‑Casting and Casting Lines

Die‑casting plants and casting lines rely on a steady supply of clean, temperature‑stable molten aluminum. The GM‑J Series delivers continuous melting with precise temperature control, ensuring consistent metal quality for high‑pressure die‑casting (HPDC), low‑pressure die‑casting (LPDC), gravity casting, and permanent‑mold casting. The tilting mechanism provides smooth, controlled metal discharge directly into ladles or transfer systems, reducing turbulence and minimizing dross formation. This results in cleaner metal and improved casting performance across all downstream processes.

Efficient Melting of Aluminum Scrap, Returns, and Mixed Feedstock

The GM‑J Series is designed to handle a wide variety of aluminum feedstock, including bulky scrap, runners, gates, and mixed returns. Its large melting chamber and powerful burner configuration allow it to process irregular or contaminated scrap more efficiently than smaller furnaces. The closed‑door melting process reduces oxidation, while the reverberatory design ensures uniform heat distribution across the charge. This makes the furnace an excellent choice for recycling‑focused facilities and foundries looking to reduce raw material costs without compromising melt quality.

Alloying, Metal Treatment, and Temperature Conditioning

With its stable thermal environment and large molten bath, the GM‑J Series supports alloy preparation and melt conditioning before casting. Operators can add alloying elements, perform degassing, and maintain precise temperature control to achieve consistent alloy composition. The furnace’s uniform heat distribution ensures that alloying materials dissolve evenly, improving metallurgical quality and reducing variability in casting performance. This makes the GM‑J Series ideal for producing high‑performance aluminum alloys used in automotive, aerospace, and industrial applications.

High‑Throughput Melting for Automotive and Industrial Casting

Automotive and industrial casting operations require large volumes of clean molten aluminum delivered at consistent temperatures. The GM‑J Series is built for these demanding environments, offering fast melting rates, low emissions, and stable temperature control. Its durable refractory lining and efficient burner system support long operating cycles with minimal downtime. Whether feeding multiple casting lines or supplying a centralized ladle‑pouring station, the GM‑J Series provides the reliability and throughput needed for high‑volume production.

Energy‑Efficient Melting for Cost‑Sensitive Production Facilities

The GM‑J Series is designed for facilities focused on reducing fuel consumption and improving operational efficiency. Its closed‑door melting process minimizes heat loss, while the optimized burner system maximizes thermal efficiency. The reverberatory chamber design ensures even heat distribution, reducing melt times and lowering overall energy usage. This makes the furnace a strong fit for cost‑sensitive operations seeking to reduce energy expenses without sacrificing melt quality or production capacity.

Clean Metal Transfer for Ladle Pouring and Automated Casting Systems

The tilting mechanism of the GM‑J Series allows operators to pour molten aluminum directly into ladles, transfer launders, or automated casting systems with exceptional control. Smooth tilting minimizes turbulence, oxidation, and dross formation — critical factors for producing clean, high‑quality castings. This application is especially valuable for gravity casting, permanent‑mold casting, and die‑casting operations where metal cleanliness directly affects product quality and scrap rates.

Reliable Melting for Long‑Cycle, Continuous Production Environments

The GM‑J Series is built for continuous operation, making it ideal for plants that run extended production cycles. Its heavy‑duty refractory lining, high‑efficiency burners, and robust tilting mechanism ensure stable performance with minimal maintenance interruptions. This reliability is essential for facilities that cannot afford downtime, such as automotive casting plants, large foundries, and high‑volume aluminum processors. The furnace’s ability to maintain consistent melt quality over long periods enhances overall process stability and production efficiency.

Frequently Asked Questions About The GM-J Series Aluminum Tilting Reverberatory Furnace

What advantages does a tilting reverberatory melting furnace offer over a fixed or stationary furnace?

A tilting reverberatory furnace provides superior control, efficiency, and metal cleanliness compared to fixed furnaces. The GM‑J Series uses a wide, open melting chamber with high‑performance burners to achieve fast melting rates and uniform heat distribution across the charge. The tilting mechanism allows operators to pour molten aluminum smoothly and safely, reducing turbulence and minimizing dross formation. This eliminates the need for manual ladling, improves operator safety, and ensures cleaner metal transfer — all of which contribute to higher casting quality and lower scrap rates.

What types of aluminum feedstock can the GM‑J Series melt efficiently?

The GM‑J Series is designed to melt a broad range of aluminum feedstock, including ingots, sows, scrap, runners, gates, and mixed returns. Its large reverberatory chamber accommodates bulky or irregular scrap that smaller furnaces cannot process efficiently. The optimized burner layout ensures uniform heat distribution, allowing the furnace to melt both primary and secondary aluminum with consistent performance. This flexibility makes it ideal for foundries and recycling operations that rely on diverse feedstock sources.

 
How does the GM‑J Series improve melt quality and reduce oxidation?

The GM‑J Series uses a closed‑door melting process and carefully engineered burner placement to maintain a stable, low‑oxygen environment inside the furnace. This significantly reduces oxidation and dross formation during melting. The reverberatory design ensures even heat transfer, while the tilting mechanism provides smooth, controlled metal discharge with minimal turbulence. These features prevent oxide entrainment and ensure that the molten aluminum remains clean, stable, and suitable for high‑performance casting applications.

Is the GM‑J Series suitable for continuous or high‑volume melting operations?

Yes — the GM‑J Series is specifically engineered for continuous, high‑volume aluminum melting. Its large melting chamber, efficient burner system, and durable refractory lining support long operating cycles with minimal downtime. The furnace’s tilting feature allows rapid, controlled metal discharge, making it ideal for feeding die‑casting machines, ladle‑pouring stations, or automated casting lines. Facilities that require a steady supply of molten aluminum benefit from the GM‑J Series’ ability to maintain consistent temperature and melt quality during extended production runs.

Do you supply tilting reverberatory melting furnaces to customers in North America?

Yes — GM‑J Series aluminum tilting reverberatory melting furnaces are available throughout the United States, Canada, and Mexico. Foundries, die‑casting plants, and aluminum processors across North America rely on these furnaces for high‑capacity melting, reduced fuel consumption, and consistent metal quality. Regional availability ensures faster delivery, dependable technical support, and access to replacement parts. Units can be configured with various capacities, burner systems, refractory options, and automation packages to meet specific production requirements.

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