COPPER, BRASS, BRONZE -
GAS CRUCIBLE MELTING FURNACE

dynamo furnaces

GM-A-BRS SERIES

The GM-A-BRS Series is a gas-fired stationary copper crucible furnace for batch melting and holding of copper, brass, bronze and compatible copper alloys. Its fixed round crucible supports dip-out removal or a planned ladle-transfer workflow; the crucible-lift pouring option should be confirmed for the specified installation. The gas burner, heavier high-temperature lining and PLC/color-HMI controls are selected around the alloy, crucible, batch size and operating schedule. Exterior surfaces must be treated as hot.

TECHNICAL OVERVIEW

GM‑A‑BRS Series Crucible Melting Furnace a Reliable, Cost‑Effective Solution for Copper and Copper‑Alloy Melting

The GM-A-BRS is a stationary copper crucible furnace for foundries that need controlled copper-alloy batches without a furnace-tilt mechanism. The crucible and high-temperature refractory are specified for the alloy and operating duty. As a copper melting and holding crucible furnace, it can supply prepared metal for suitable casting operations; select crucible size and holding time from the actual batch schedule rather than a generic capacity claim.

Choose a Stationary Crucible Furnace for Copper Instead of a Tilting or Open‑Flame System

Choose the GM-A-BRS as a gas-fired copper bale-out furnace when operators remove metal from a fixed crucible by a specified dip-out or ladle method. This stationary crucible bale-out furnace should be compared with the GM-B-BRS hydraulic tilting copper crucible furnace when controlled furnace discharge is needed. The two machines have different handling paths: a dip-out copper crucible furnace does not automatically replace a tilting furnace, and the ladle, transfer route, access and guarding need separate review.

Key Features and Benefits of the GM‑A‑BRS Series Copper Crucible Melting Furnace

This high-temperature stationary crucible furnace combines a gas burner, round crucible, refractory insulation, reinforced shell and PLC/color-HMI control for stationary copper-alloy melting. Insulation helps limit heat loss and may lower external shell temperature relative to a less-insulated design, but the shell must still be treated as a hot surface. Confirm the crucible material, burner configuration, controls, accessories and safe metal-removal method for the ordered unit. The copper melting application guide covers broader alloy and process selection.

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!

Dynamo Furnaces return-on-investment illustration
Illustration comparing furnace insulation thickness

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.

Thicker insulation can reduce heat loss and fuel demand during copper-alloy melting. It may also lower external shell temperature, but the furnace exterior can still be hot; follow normal hot-surface precautions.
Diagram of thermal insulation for Dynamo crucible furnaces
dynamo furnaces

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.

Our GM-A-BRS Series melting furnaces feature state-of-the-art PLC control with large color HMI screens with easy-to-read graphics - all at no extra charge. See in real time all furnace functions and change any setting on the fly. Now that's control. Screen shown with optional upgraded Siemens control system.
dynamo furnaces
dynamo furnaces

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.

dynamo furnaces
dynamo furnaces

REMOTE SERVICE

We Can Remotely Troubleshoot Your Furnace from Our Facility.

As an option, we can 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.

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.
dynamo furnaces

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
DO YOU NEED A

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

Clean, Controlled Melting of Copper, Brass, and Bronze Alloys

The GM-A-BRS is a stationary copper-alloy melting furnace for appropriately specified copper and copper-based alloy batches. A compatible crucible separates the metal from direct burner-flame contact; melt quality still depends on charge condition, alloy practice, temperature, holding time and removal method. Review those factors in the copper furnace applications rather than assuming one setup suits every grade.

Reliable Molten Metal Supply for Brass and Bronze Foundries

For appropriate brass grades, GM-A-BRS can be specified as a gas-fired brass stationary crucible furnace; for appropriate bronze grades, it can serve as a gas-fired bronze stationary crucible furnace. Both duties require their own crucible, temperature, treatment and ventilation review. The fixed-vessel layout can support controlled batch supply to a suitable receiving ladle. See brass and bronze melting applications for the alloy-specific planning issues.

Alloying, Metal Treatment, and Temperature Conditioning

Use the fixed crucible for specified alloy preparation, treatment and temperature conditioning when the selected crucible and process allow it. The ladle-transfer copper furnace workflow must account for safe access, metal temperature, receiving-vessel capacity, transfer distance and casting schedule. These process details belong in the equipment specification, not in an assumed claim of metallurgical purity.

Small‑Batch Production, Prototyping, and Specialty Casting

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.

Melting of Cathode Copper, Ingots, Scrap, and Recycled Copper Alloys

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.

Energy‑Efficient Melting for Cost‑Sensitive Copper Casting Operations

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.

Clean Metal Preparation for Investment Casting and Precision Bronze Casting

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.

Simple, Low‑Maintenance Melting for Small and Medium Copper Foundries

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

What advantages does a stationary crucible melting furnace offer for copper and copper‑alloy melting?

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.

What types of copper feedstock can the GM‑A‑BRS Series melt efficiently?

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.

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

A compatible crucible separates the metal from direct burner-flame contact. That can help limit one exposure path, but oxidation, gas pickup and casting quality depend on the alloy, charge, melt treatment, temperature, holding time and transfer practice. Engineering should specify the actual copper, brass or bronze grade and verify the required controls; the furnace alone cannot guarantee low-oxygen melting or defect-free castings.

Is the GM‑A‑BRS Series suitable for continuous or high‑volume copper melting operations?

GM-A-BRS can support repeated copper-alloy batches and holding during a shift when its selected size, crucible and burner match average and peak demand. Confirm melting rate, batch changes, holding time, maintenance windows and the dip-out or ladle-transfer route. Do not infer continuous high-volume suitability from the stationary design alone.

Do you supply copper crucible melting furnaces to customers in North America?

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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