COPPER, BRASS, BRONZE -
GAS CRUCIBLE MELTING FURNACE
GM-A-BRS SERIES
TECHNICAL OVERVIEW
The GM‑A‑BRS Series is a stationary round crucible melting furnace engineered for clean, consistent melting of copper, brass, bronze, and other copper‑based alloys. Its crucible‑based design isolates the molten metal from direct flame contact, reducing oxidation, hydrogen pickup, and contamination — all critical factors in copper metallurgy. The furnace features a high‑efficiency gas burner system, thick refractory insulation, and a reinforced steel shell to ensure fast melting rates, excellent thermal retention, and long service life. With its simple operation, low maintenance requirements, and economical price point, the GM‑A‑BRS Series delivers exceptional value for foundries, brass shops, and copper‑alloy casting facilities that need reliable, high‑quality melting performance without the complexity of larger industrial systems.
Copper alloys are highly sensitive to oxidation and gas absorption, making crucible melting the preferred method for achieving clean, stable molten metal. The GM‑A‑BRS Series enhances these advantages by providing a controlled, low‑turbulence melting environment that preserves alloy integrity and reduces dross formation. Unlike open‑flame systems, the crucible protects the melt from combustion gases, minimizing hydrogen pickup and improving metallurgical cleanliness. Compared to tilting furnaces, the stationary design has fewer moving components, resulting in lower maintenance costs and longer operational life. For facilities seeking a dependable, cost‑effective melting solution with excellent temperature stability and clean metal output, the GM‑A‑BRS Series is a practical and efficient choice.
The GM‑A‑BRS Series combines clean melting performance with durable industrial construction. It features a high‑quality graphite or silicon‑carbide crucible capable of withstanding the elevated temperatures required for copper melting. The furnace’s high‑efficiency gas burner system ensures fast heat‑up and stable temperature control, while thick refractory insulation maximizes thermal retention and reduces fuel consumption. The stationary design simplifies operation and maintenance, making it ideal for small and medium‑scale copper foundries. Optional temperature controllers, safety interlocks, and metal‑handling accessories enhance operational flexibility. With its compact footprint, low operating costs, and consistent melt quality, the GM‑A‑BRS Series is a dependable solution for copper‑alloy casting operations of all sizes.
HIGHEST RETURN ON INVESTMENT
We Give You More Furnace For Your Money.
To be competitive today’s economy requires that manufacturers run their operations more efficiently and cost effectively than ever before. We offer the highest ROI (return on investment) in the industry. Dynamo gives you high-quality products for a reasonable investment and with more features than any other company. Simply put, we give you the most for your money!
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.
HIGH THERMAL EFFICIENCY BY DESIGN
We Add Significantly More Insulation to Our Furnaces Than Most Manufacturers.
HIGH QUALITY CONTROL SYSTEM
More graphics and options to simplify operation.
Siemens PLC/HMI offer more options and upgraded graphics then other systems. Available globally and with “off the shelf” replaceability, Siemens is the logical choice for a control system in today’s fast pace factory environment.
EASY TO OPERATE INTERFACE
Greater Control - Means Greater Efficiency.
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.
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.
INDUSTRY 4.0 REMOTE MONITORING
Remotely Monitor Your Furnace Performance From Any Device.
SIX STANDARD SIZES
Flexible Range of Applications.
Available from 440 lbs melting per hour all the way to 1465 lbs, the GM-A-BRS Series round crucible melting furnaces allow for a wide range of applications.
| Item | US Standard (Cu) | Metric Standard (Cu) | ||
| Model | Holding | Melting/h * | Holding | Melting/h * |
| GM-A-BRS-660 | 660 lb | 440 lb | 300 kg | 200 kg |
| GM-A-BRS-880 | 880 lb | 585 lb | 400 kg | 265 kg |
| GM-A-BRS-1100 | 1100 lb | 735 lb | 500 kg | 330 kg |
| GM-A-BRS-1300 | 1300 lb | 880 lb | 600 kg | 400 kg |
| GM-A-BRS-1760 | 1760 lb | 1175 lb | 800 kg | 530 kg |
| GM-A-BRS-2200 | 2200 lb | 1465 lb | 1000 kg | 665 kg |
DIFFERENT SIZE?
Let Us Make One for You.
Tell us your requirements and we will be glad to work with you to give you exactly what you need.
Applications For The GM-A-BRS Series Copper Crucible Melting Furnace
The GM‑A‑BRS Series is engineered for clean, consistent melting of copper and copper‑based alloys such as brass, bronze, and gunmetal. The crucible isolates the molten metal from direct flame contact, reducing oxidation, hydrogen pickup, and contamination — all critical factors in copper metallurgy. This makes the furnace ideal for foundries and casting shops that require high‑purity molten metal for plumbing components, electrical hardware, bronze castings, and precision copper‑alloy parts.
Brass and bronze foundries depend on stable melt temperatures and consistent metal quality to produce dimensionally accurate, defect‑free castings. The GM‑A‑BRS Series delivers reliable melting performance with fast heat‑up times and excellent thermal stability. Its crucible‑based design preserves alloy integrity and minimizes oxidation, making it ideal for producing valves, fittings, bushings, bearings, sculptures, and architectural hardware.
Copper alloys require precise control during alloying and melt treatment to achieve the correct composition and mechanical properties. The GM‑A‑BRS Series provides a stable, low‑turbulence environment for adding alloying elements, performing fluxing, and maintaining tight temperature tolerances. The crucible protects the melt from excessive oxidation, ensuring uniform alloy composition and improved metallurgical consistency — essential for high‑performance brass and bronze components.
The GM‑A‑BRS Series is ideal for small‑batch production, prototyping, and specialty casting operations that require clean molten copper in controlled quantities. Its compact footprint, fast melting capability, and precise temperature control make it suitable for artisan bronze foundries, custom brass casting shops, R&D labs, and short‑run manufacturing environments. Facilities benefit from lower operating costs, reduced metal loss, and the ability to melt small batches without the overhead of a large industrial furnace.
The GM‑A‑BRS Series efficiently melts a wide range of copper feedstock, including cathode copper, ingots, chopped scrap, sprues, runners, and recycled copper alloys. The crucible design ensures uniform heat transfer and stable melting performance, even with varying charge sizes. Because the melt is protected from direct flame contact, oxidation is minimized and metal quality remains consistent. This makes the furnace suitable for operations that rely on both primary and secondary copper sources.
Copper melting requires higher temperatures than aluminum, making energy efficiency a critical factor. The GM‑A‑BRS Series uses high‑efficiency gas burners and thick refractory insulation to maximize thermal retention and reduce fuel consumption. The closed‑door melting process further improves efficiency by maintaining a stable internal environment. This makes the furnace a strong fit for cost‑sensitive operations seeking to reduce energy expenses while maintaining high melt quality.
Investment casting and precision bronze casting require exceptionally clean molten metal to achieve fine detail and high surface quality. The GM‑A‑BRS Series provides a controlled melting environment that minimizes oxide formation and gas absorption, ensuring the molten copper remains clean and stable. This results in improved casting accuracy, reduced porosity, and superior surface finish — essential for fine art bronze, jewelry, and high‑precision industrial components.
The stationary design of the GM‑A‑BRS Series has fewer moving components than tilting or automated systems, resulting in lower maintenance requirements and longer service life. Its PLC‑based controls and efficient burner system simplify operation, making it ideal for small and medium foundries with limited technical staff. The furnace provides dependable, repeatable melting performance with minimal downtime, supporting daily production needs with ease.
Frequently Asked Questions About The GM-A-BRS Series Copper Crucible Melting Furnace
A stationary crucible furnace provides a clean, stable melting environment that is ideal for copper and copper‑based alloys. Because the molten metal is contained inside a graphite or silicon‑carbide crucible, it is protected from direct flame contact and combustion gases, significantly reducing oxidation and hydrogen pickup. This results in cleaner metal, lower dross formation, and improved casting quality. The GM‑A‑BRS Series enhances these benefits with high‑efficiency burners, thick refractory insulation, and a simple, low‑maintenance design that delivers consistent performance shift after shift.
The GM‑A‑BRS Series is engineered to melt a wide range of copper‑based materials, including cathode copper, ingots, chopped scrap, sprues, runners, brass scrap, bronze scrap, and recycled copper alloys. Its crucible‑based design ensures uniform heat transfer and stable melting performance, even with varying charge sizes. Because the melt is isolated from direct flame contact, oxidation is minimized and alloy integrity is preserved — making the furnace suitable for both primary and secondary copper‑alloy melting operations.
Copper alloys oxidize rapidly at high temperatures, making melt protection essential. The GM‑A‑BRS Series uses a closed‑door melting process and optimized burner placement to maintain a stable, low‑oxygen environment. The crucible acts as a protective barrier, preventing direct exposure to combustion gases and reducing hydrogen absorption — a common cause of porosity in copper castings. These features allow the furnace to consistently produce clean, high‑quality molten copper suitable for demanding casting applications such as valves, fittings, bushings, and precision bronze components.
Yes — the GM‑A‑BRS Series is well‑suited for continuous melting in small and medium‑scale copper and brass foundries. Its efficient burner system, durable crucible materials, and robust refractory insulation support long operating cycles with stable temperature control. While stationary crucible furnaces are typically used for lower‑volume applications compared to large reverberatory systems, the GM‑A‑BRS Series provides reliable, repeatable performance for sand casting, investment casting, permanent‑mold casting, and specialty bronze casting operations that require consistent melt quality throughout the shift.
Yes — GM‑A‑BRS Series copper crucible melting furnaces are available throughout the United States, Canada, and Mexico. Copper foundries, brass casting shops, and industrial manufacturers rely on these furnaces for clean melting, stable temperature control, and low operating costs. Regional availability ensures faster delivery, dependable technical support, and access to replacement parts. Units can be configured with various crucible sizes, burner systems, and automation options to meet specific production requirements.
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