ALUMINUM ELECTRIC -
ROUND CRUCIBLE MELTING FURNACES
EM-A SERIES
TECHNICAL OVERVIEW
EM-A is a stationary electric crucible furnace for round-crucible aluminum melting and holding. As a stationary aluminum melting and holding crucible furnace, it uses electric resistance heat without an on-site burner and supports a stable metal temperature when charge rate, controls and operating practice suit the duty. The published models span small to medium batch needs, but their holding capacity and hourly melting rate must be evaluated separately.
Choose EM-A when a round crucible dip-out furnace and fixed-bath metal removal fit the foundry layout. Hand ladling or a designed ladle-transfer route can serve gravity, sand and permanent-mold casting, provided operator access and hot-metal precautions are planned. EM-A is an electric bale-out furnace only in this stationary removal sense; compare the EM-B square-crucible bale-out furnace where that geometry is preferred, and the EM-C electric tilting crucible furnace when powered pouring is required.
This electric crucible melting and holding furnace combines a fixed round crucible, electric resistance elements, refractory insulation and the selected temperature-control package. Its stationary layout avoids a tilting hydraulic system. Size the furnace around actual batch rhythm, clean charge dimensions, melt rate, holding reserve, electrical service, ladle access and maintenance space. Do not assume a particular controller, leak-detection system or power-control feature without a verified specification.
NO ON-SITE COMBUSTION
Electric Heat for a Defined Plant Energy Mix.
HIGHEST RETURN ON INVESTMENT
We Give You More Furnace For Your Money.
To be competitive today’s economy requires that manufactures 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 bang for your buck!
HIGH THERMAL EFFICIENCY BY DESIGN
We Add Significantly More Insulation to Our Furnaces Than Most Manufacturers.
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.
NINE STANDARD SIZES
Flexible Range of Applications.
| Item | US Standard (Al) | Metric Standard (Al) | ||
| Model | Holding | Melting/h * | Holding | Melting/h * |
| EM-A-330 | 330 lb | 110 lb | 150 kg | 50 kg |
| EM-A-550 | 550 lb | 175 lb | 250 kg | 80 kg |
| EM-A-660 | 660 lb | 220 lb | 300 kg | 100 kg |
| EM-A-770 | 770 lb | 240 lb | 350 kg | 110 kg |
| EM-A-880 | 880 lb | 275 lb | 400 kg | 125 kg |
| EM-A-1100 | 1100 lb | 330 lb | 500 kg | 150 kg |
| EM-A-1300 | 1300 lb | 350 lb | 600 kg | 160 kg |
| EM-A-1750 | 1750 lb | 440 lb | 800 kg | 200 kg |
| EM-A-2200 | 2200 lb | 660 lb | 1000 kg | 300 kg |
Applications For The EM-A Series Aluminum Crucible Melting Furnace
The EM‑A Series is engineered for aluminum foundries that require exceptionally clean molten metal with minimal oxidation and hydrogen pickup. Electric resistance heating eliminates combustion gases and flame impingement, producing a stable, low‑dross melt. The round crucible design ensures uniform heat transfer, making this furnace ideal for producing high‑quality castings with excellent surface finish and dimensional accuracy.
EM-A can supply gravity, sand and permanent-mold casting where its melt rate and holding reserve match the production rhythm. The stationary bath supports hand ladling and planned ladle transfer; specify receiving ladle size, operator access, transfer distance and temperature loss rather than assuming the furnace pours by tilting.
Electric melting is highly valued in die‑casting environments where temperature stability and melt cleanliness are critical. The EM‑A Series delivers clean molten aluminum with extremely tight temperature control, making it ideal for feeding small high‑pressure die‑casting (HPDC) and low‑pressure die‑casting (LPDC) cells. Its compact footprint and quiet operation make it suitable for placement near casting machines, reducing heat loss during transfer.
The EM‑A Series provides a stable, low‑turbulence environment for alloying and melt treatment. Operators can add alloying elements, perform degassing, and maintain precise temperature control before transferring metal to casting equipment. The round crucible geometry promotes even heat distribution, ensuring uniform alloy composition and improved metallurgical consistency — essential for producing high‑performance aluminum alloys.
The EM‑A Series is an excellent choice for research labs, prototype shops, and low‑volume production environments that require clean molten aluminum in small batches. Its electric heating system provides fast heat‑up, precise temperature control, and quiet operation — ideal for testing new alloys, validating casting designs, or producing short‑run components. Facilities benefit from lower operating costs and reduced metal loss.
Charge clean, dry and appropriately sized aluminum ingots, runners, returns or prepared production scrap that fit the selected round crucible. Whole sows or contaminated feed should not be assumed suitable. Charge preparation, temperature practice and careful skimming can support low metal loss, but actual recovery depends on the alloy and process and should be measured.
Electric melting is inherently energy‑efficient, and the EM‑A Series maximizes this advantage with high‑performance heating elements and thick refractory insulation. The closed‑chamber design minimizes heat loss, while precise temperature control prevents overheating and unnecessary power consumption. For facilities seeking to reduce energy costs without compromising melt quality, the EM‑A Series offers a highly economical solution.
The EM‑A Series is ideal for facilities that need a reliable melting furnace with minimal maintenance requirements. With no burners, no fuel trains, and no combustion‑air systems, electric melting dramatically reduces routine service needs. The stationary design has fewer mechanical components than tilting or automated systems, improving uptime and lowering long‑term operating costs. This makes the EM‑A Series a practical, dependable melting solution for small foundries, job shops, and aluminum casting operations.
Frequently Asked Questions About The EM-A Series Aluminum Crucible Melting Furnace
EM-A uses electric resistance heat without an on-site gas burner and retains a stationary round crucible for hand ladling. Potential differences in dross, hydrogen pickup and energy use depend on the charge, crucible practice and compared furnace; no universal performance advantage is implied. Select it where electric utility service and a fixed-bath removal method fit the operation.
Evaluate EM-A for clean, dry, appropriately sized aluminum ingots, runners, returns and prepared production scrap. Confirm charge geometry, alloy compatibility and handling procedure for the selected crucible. Whole sows and mixed or contaminated scrap are not implied by the standard description.
Electric resistance heating avoids direct burner flame at the crucible. Stable metal temperature, prepared charge, appropriate skimming and holding practice can help limit oxidation and metal loss, but the result must be verified for each alloy and operating cycle.
EM-A can serve repeated batch production or extended operating schedules when its rated melting rate, holding capacity, electrical service and maintenance plan meet the duty. A central high-output melting furnace may be more suitable when continuous molten-metal supply to several lines is the main requirement.
Yes — EM‑A Series electric aluminum crucible melting furnaces are available throughout the United States, Canada, and Mexico. Foundries, die‑casting plants, and aluminum processors rely on these furnaces for clean melting, precise 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, power ratings, and control options to meet specific production requirements.
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