Gold & Silver Bar Furnaces, Bullion Casting Systems and Refinery Technology

Delmer’s Gold(AU) & Silver(AG) Bar Machines are designed to meet the demanding needs of bullion producers, refineries, and metal casting industries. With advanced technology, durable construction, and intelligent features, these machines deliver precise and efficient production of gold and silver bars. Whether you need small-scale output or large-volume production, our models ensure consistency, reliability, and a long service life.

Model Range

1) Gold(AU) & Silver(AG) Bar Casting Machine (bD 04)

• Power: 15KW
• Capacity: 5 Silver Bars / 4 Gold Bars per hour
• Size: 150 CM (W) × 150 CM (H) × 700 CM (L)

The bD 04 is a compact solution ideal for medium-sized refineries or businesses that require precision casting with a controlled production rate. Despite its smaller size, it ensures the same high-quality results as larger systems.

2) Tunnel Casting for Gold(AU) & Silver(AG) Bar (bD-30)

• Power: 45KW
• Capacity: 30 Silver Bars / 30 Gold Bars per hour
• Size: 7000 mm (W) × 1430 mm (H) × 1100 mm (D)

The bD-30 is built for large-scale industrial production, offering exceptional output without compromising accuracy. It is the preferred choice for organizations that need to cast a higher number of bullion bars efficiently.

Advanced Features & General Specifications

• Machine Voltage: Three Phase 380V, 50/60 Hz + Neutral
• Cooling System: External cooling with 22.26°C water inlet
• Thermocouple Technology: Laser measurement between 600°C – 1600°C
• PLC System Control: Smart automation for precise process management and easy operation
• Water Flow Control: Ensures optimal cooling flow for safe and efficient operation
• Water Temperature Control: Continuous monitoring and regulation for consistency
• Laser Heat Meter: High-accuracy heat measurement for reliable casting temperatures
• N₂ Input Flow Control: Regulated nitrogen flow for maximum process stability
• Multi-Layer Protections: Includes water flow protection, over-temperature alerts, IGBT over-temp protection, cooling area monitoring, step motor overload protection, and ultra-fast fuses
• Warranty: 3-Year International Warranty

Why Choose Delmer Gold(AU) & Silver(AG) Bar Machines?

• Efficiency: Produce multiple gold and silver bars per hour with high precision.
• Reliability: Built with robust materials and backed by strict quality control.
• Advanced Technology: Equipped with laser thermocouples and nitrogen gas flow control for accurate and safe casting.
• Scalability: Suitable for both small and large-scale operations with flexible models.
• Global Trust: Used by refineries and bullion manufacturers worldwide.

External Cooling :

1. Del Chiller Water Cooler
2. Nitrogen Generator

The Delmer 1KG Gold Induction Melting Furnace is a high-efficiency, fast-melting solution designed for gold refineries, jewelry manufacturers, bullion producers, and precious metal processing units. Powered by advanced IGBT induction technology, this furnace ensures rapid melting, precise temperature control, and energy-efficient performance.

Manufactured by Delmer Group, this four-station induction melting system is built for continuous industrial use, offering high productivity with consistent metal purity and uniform alloy composition.

The Delmer 1kg induction gold melting furnace uses medium-frequency IGBT induction heating to melt gold quickly, safely, and efficiently. It can melt up to 1 kilogram of gold in just 12–15 minutes, making it ideal for small to mid-scale gold production setups.

Built with premium international electrical components and a smart safety interlock system, the furnace delivers reliable, stable, and long-lasting performance. Its integrated water-cooling system protects internal components from overheating and supports uninterrupted operation.

The system is user-friendly and requires minimal operator training, making it suitable for both modern refineries and traditional jewelry workshops.

Key Features of Delmer Gold Melting Furnace

• Melting Capacity: 1KG Gold per batch
• Fast Melting Cycle: 12–15 minutes
• Output Power: 40 kW
• Technology: Advanced IGBT Induction Heating
• Maximum Temperature: Up to 1200°C
• Four-Station Setup: Improves workflow and productivity
• Energy-Efficient Operation: Constant power and current control
• Industrial Water Cooling System Included
• Heavy-Duty Industrial Construction by Delmer
• User-Friendly Control Panel with Built-in Safety Interlocks

Technical Specifications

Industrial Cooling System Included

To maintain optimal operating temperature, the Delmer furnace includes a high-efficiency industrial water chiller.

• Chiller Capacity: 5 Ton
• Water Tank Capacity: 250–280
• Litres Phase: Three Phase
• Auto Restart: Yes
• Cooling Type: Closed-loop recirculating system

This ensures safe, stable, and continuous furnace performance during long melting cycles.

Applications

• Gold jewelry manufacturing
• Precious metal refining
• Bullion bar production
• Assay and hallmarking laboratories
• Small to mid-scale casting operations

Benefits of Choosing Delmer Induction Furnace

✔ Faster melting cycles

✔ Reduced metal oxidation and loss

✔ Lower energy consumption

✔ Consistent alloy quality

✔ Clean and safe induction melting

✔ Compact, space-saving industrial design

✔ Trusted Delmer engineering and support

Frequently Asked Questions (FAQs)

1. What metals can this induction furnace melt? 

This furnace is primarily designed for gold melting, but it can also handle other precious metals with similar melting ranges, depending on the crucible and process setup.

2. How long does it take to melt 1kg of gold?

The Delmer furnace melts 1kg of gold in approximately 12–15 minutes, depending on input material condition and operating parameters.

3. Is a water chiller necessary for this furnace?

Yes. Induction furnaces generate significant heat, so a water cooling system is essential. This unit includes an industrial chiller for safe and stable operation.

4. Does the furnace require a skilled operator?

No. The system is designed for easy operation with simple controls and safety features, making it suitable for standard workshop staff.

5. What power supply is required?

The furnace operates on 440V, 3-phase power supply with a frequency of 50/60 Hz.

6. What is the maximum temperature of the furnace?

The furnace can reach temperatures up to 1200°C, ideal for melting gold and similar metals.

7. Is the system suitable for continuous production?

Yes. The four-station setup supports efficient workflow and makes it suitable for continuous or semi-continuous operations.

8. What cooling capacity does the chiller provide?

The included chiller has a 5 Ton cooling capacity with a 250–280 litre water tank.

9. Is the furnace energy efficient?

Yes. The IGBT induction technology ensures high energy efficiency and reduced power consumption compared to traditional melting methods.

10. Who should use this furnace?

This machine is ideal for gold refineries, jewelry manufacturers, bullion producers, and precious metal processors.

The DELMER Compact Gold Bar Casting Machine is a precision-engineered solution for efficient small-batch gold and silver bar casting. Designed for jewelry workshops, boutique refineries, and compact precious metal production units, this machine offers advanced PLC control, vacuum casting, and induction heating in a space-efficient design.

Ideal for businesses requiring dependable precision without a large industrial footprint.

Key Features  

✔ Compact footprint
✔ PLC-based automation
✔ Fast melting time: 230 seconds
✔ Cooling time: 450 seconds
✔ Vacuum pump: 650 LPM
✔ Argon inert gas support
✔ Auto & manual operation
✔ Chiller compatible

Capacity  

• 100 gm × 4 bars

• 1 kg × 1 bar

Technical Specs  

• Power: Three Phase 415V AC ±10%

• Air Compressor: 2.7 CFM minimum

• Air Pressure: 6–8 Bar

• Cooling Water Temp: 25°C max

• Chiller Capacity: 2 Ton

Applications  

• Jewelry manufacturers

• Small bullion producers

• Precious metal workshops

• Boutique refineries

FAQs  

Q: Is this suitable for small businesses?
Yes, ideal for compact operations and boutique manufacturing.

Q: What is the melting speed?
Approximately 230 seconds melting time.

Boost your precious metal manufacturing efficiency with DELMER Gold Bar Casting Machines, engineered for precision gold and silver bar production. Designed for jewelry manufacturers, bullion processors, and refineries, these advanced casting solutions combine induction heating, vacuum casting technology, PLC automation, and inert gas protection to deliver reliable, high-quality casting performance.

Available in both 25 kW and 45 kW models, these machines are ideal for medium to large-scale bullion manufacturing operations requiring consistency, automation, and operational safety.

Key Features

✔ High-performance induction heating system
✔ Suitable for gold & silver bar casting
✔ PLC-based intelligent automation
✔ Vacuum-assisted casting technology
✔ Argon / Nitrogen gas compatibility
✔ Auto & manual operation modes
✔ Fast melting and casting cycle
✔ Industrial-grade safety system
✔ Three-phase 415V power supply

Production Capacity

• Up to 4 pcs of 1 kg gold bars
• Up to 20 pcs of 100 gm gold bars

Applications

• Gold refineries
• Silver bullion manufacturing
• Jewelry casting production
• Precious metal processing plants
• Industrial bullion production facilities

FAQs

Q: What metals can these machines cast?
Gold and silver.

Q: Are these machines fully automatic?
Yes, both models feature PLC automation with manual operation support.

Q: Are these machines suitable for large-scale production?
Yes, the range includes solutions for medium and high-capacity precious metal manufacturing.

Q: What power supply is required?
Three-phase 415V AC.

Automatic Granulation Furnaces 

An Automatic Granulation Furnace is a machine that automatically turns larger pieces of material, such as metal, into smaller, grain-like particles. This process is called granulation. The furnace uses heat to melt the material, and then it forms small grains or beads from the melted substance.

This can be useful for various industries, especially those working with metals, as it allows for easier handling and processing of materials. The term "automatic" indicates that the machine performs these tasks without constant manual intervention, making the granulation process more efficient and convenient.

How do Automatic Granulation Furnaces Work?

Material Loading : Larger pieces of material, such as metal, are loaded into the furnace.

Heating : The furnaces melt the metal, and operators manually shape it into granules.

Granulation Process : Once melted, the liquid material is processed to form small grains or beads. This can involve mechanisms like pouring the melted material through small openings or using specific shaping tools.

Automatic Operation : The term "automatic" means that the machine performs these tasks without constant manual intervention. It is programmed to carry out the heating, melting, and graduation processes seamlessly.

Cooling : After granulation, the newly formed particles are allowed to cool and solidify.

Collection : The finished granulated material is collected for further use or processing.

Key Features of Automatic Granulation Furnace :

• Efficient Melting : Melts larger materials, like metal, into a liquid state.

• Automated Granulation : Automatically processes and shapes the melted material into small grains.

• Hands-Free Operation : Operates without constant manual intervention, enhancing efficiency.

• External Cooling : Allows the formed particles to cool and solidify.

• Material Collection : Collects the granulated material for further use or processing.

• PLC System Touchpad : Integrates a touch-sensitive interface with a Programmable Logic Controller for streamlined control in industrial processes. Offers user-friendly operation, combining the adaptability of PLCs with the convenience of touchpad input in industrial settings.

Technical Specifications

Manual Granulation Furnace :

A manual granulation furnace is a furnace used for the granulation process where larger materials, such as metals, are manually loaded, melted, and processed into small grains or beads. This type of furnace requires hands-on control and intervention throughout the granulation process.

In this furnace, operators manually load the raw materials, oversee the melting stage, and actively participate in the granulation process, ensuring hands-on control and precision throughout each step. This type of furnace is characterized by its detailed and manual operation, offering a more involved approach to the granulation of metals.

How do Manual Granulation Furnaces Work?

Load Material : Operators load metal into the furnace.

Heat and Shape : The furnaces melt the metal, and operators manually shape it into granules.

Controlled Cooling : Granules cool and solidify under manual control.

Operator Precision : Throughout the process, operators actively ensure quality and precision.

Collect Granules : Finished granules are manually collected for further use.

Key Features of Manual Granulation Furnace :

• Operator Control : Hands-on control throughout the granulation process for precision.

• Customized Granule Formation : Manual shaping allows for tailored and specific granule characteristics.

• Flexibility : Adaptability to diverse materials and granulation requirements.

• Real-time Monitoring : Operators actively monitor and adjust parameters for quality assurance.

• Hands-on Expertise : Utilizes skilled operator expertise for nuanced and controlled granulation.

• External Cooling : Allows the formed particles to cool and solidify.

Graphite molds are used to cast molten metal and they come in a variety of shapes and sizes. Metals such as copper, gold, silver, brass, and brass can be cast in their molten form in a graphite mold, and they have the shape and shape of the mold after solidification. It has a smooth cavity finish that allows for easy removal of solid metal from the mold. Graphite molds have good thermal stability, they are resistant to corrosion, strong acids, and alkalis