Tunnel Casting Machine for Gold & Silver Bars
High-Precision Continuous Casting Solution for Modern Refineries
The Delmer Tunnel Casting Machine is an advanced industrial solution engineered for precision gold and silver bar production. Designed with cutting-edge Italian technology, this system delivers consistent bar quality, reduced defects, and high production efficiency, making it ideal for professional refineries and bullion manufacturers.
Product Overview
Built on a continuous tunnel casting process, this machine ensures controlled solidification of molten metal, resulting in uniform structure, accurate weight, and superior surface finish. Unlike traditional casting methods, it significantly reduces porosity, shrinkage defects, and material loss, ensuring maximum yield and quality.
Whether you are scaling production or upgrading your refinery, Delmer’s tunnel casting machines provide automation reliability, durability, and long-term performance.
Key Features
Continuous Tunnel Casting Technology for uniform metal flow
High Precision Temperature Control (600–1600°C) for optimal metallurgical quality
Laser / Thermocouple Monitoring for accurate heat regulation
External Water Cooling System ensuring stable operation
Low Rejection Rate with consistent bar dimensions
Automation-Ready Design for industrial scalability
Heavy-Duty Construction for long-term usage
Integrated Safety Systems
Water flow & temperature monitoring
IGBT temperature protection
Overload protection
Ultra-fast fuse protection
These features ensure safe, uninterrupted operation, reducing downtime and operational risks.
Models & Technical Specifications
bD 04 Tunnel Casting Machine (Compact Production Unit)
Power Installed: 15 kW
Production Output:
5 Silver Bars/hour
4 Gold Bars/hour
Temperature Range: 600–1600°C
Cooling: External water cooling (22–26°C inlet)
Electrical Requirement: 380V, 3 Phase
Dimensions: 2004 × 1106 × 695 mm
Warranty: 3 Years
bD 30 Tunnel Casting Machine (High-Capacity Industrial Unit)
Power Installed: 65 kW
Production Output:
30 Silver Bars/hour
30 Gold Bars/hour
Temperature Range: 600–1600°C
Cooling: External water cooling (22–26°C inlet)
Electrical Requirement: 380V, 3 Phase
Dimensions: 7000 × 1430 × 1100 mm
Warranty: 3 Years
Benefits for Refineries
Higher Productivity with continuous operation
Consistent Bar Quality with minimal variation
Reduced Material Loss & Waste
Energy Efficient Performance
Scalable Production Capacity
Lower Operational Costs Over Time
Applications
Gold refineries
Silver processing units
Bullion manufacturing plants
Precious metal casting facilities
Why Choose Delmer Tunnel Casting Machines?
Delmer Group combines engineering precision with advanced metallurgy, delivering machines that meet global refinery standards. With a focus on quality, automation, and efficiency, these systems help businesses achieve higher output with superior product consistency.
Frequently Asked Questions (FAQs)
1. What metals can be processed using this machine?
The machine is designed for gold and silver bar casting, ensuring high purity and consistency.
2. What is the advantage of tunnel casting over traditional casting?
Tunnel casting provides continuous production, uniform solidification, and reduced defects, improving overall output quality.
3. Is the machine suitable for small-scale refineries?
Yes, the bD 04 model is ideal for smaller operations, while bD 30 suits high-capacity industrial production.
4. What cooling system is used?
It uses an external water cooling system (22–26°C inlet) for stable and efficient operation.
5. What kind of warranty is provided?
All machines come with a 3-year international warranty.