1. Project Background & Requirements
The Russian client, specializing in pressure and gravity die casting, required a melting solution capable of maintaining high efficiency under rigorous workshop conditions. Key requirements included:
Rated Capacity: 300 kg of molten aluminum
Melting Rate: 100 kg/hour
Energy Efficiency: Integration of a heat recovery system to minimize natural gas consumption.
2. Technical Parameters & Configuration
To meet the client’s standards for molten metal quality, the equipment features the following technologies:
High-Precision Temperature Control: During the holding stage, the aluminum liquid temperature accuracy is maintained at $pm 10^{circ}C$, ensuring casting consistency.
Monolithic Lining Process: The molten pool is cast as a single piece, offering superior structural strength. It exhibits a compressive strength above 140 MPa at temperatures over $110^{circ}C$, with a linear change rate of only 0.1%.
Air Preheating System: An integrated preheater utilizes waste heat to warm combustion-supporting air, maintaining melting energy consumption at approximately 70 $m^3/T$
Premium Components: The combustion system utilizes Honeywell brand components, allowing flame adjustment between 10% and 100% based on demand.
3. Delivery & Field Performance
The project was delivered in 2026, comprising the furnace body, control box, and pipe burning system.
Automated Monitoring: Equipped with a 1.8-inch LED digital display, allowing operators to monitor real-time molten aluminum temperatures from a distance
Safety Engineering: Includes an emergency outlet hole and a leak alarm system to prevent accidents during unexpected crucible failure.
In aluminum alloy casting, hydrogen content and oxide inclusions are the primary causes of defects such as porosity and cracks. This case study analyzes the WDL-LQJ-900 degassing and deslagging machine, demonstrating its efficient and eco-friendly purification through physical principles.
1. Technical Principle and Advantages of Rotary Degassing
This equipment utilizes advanced rotary refining technology, replacing traditional chemical treatment methods.
Efficient Dehydrogenation: Inert gas (Argon or Nitrogen) is injected into the melt through a graphite rotor. The rotating head shears the gas into dispersed micro-bubbles, which absorb dissolved hydrogen due to partial pressure differences and carry it to the surface.
Physical Deslagging: As micro-bubbles rise, they adsorb oxide inclusions via surface tension, causing them to float to the surface for easy removal, achieving simultaneous degassing and slag removal.
Eco-Friendly Process: Unlike solid chloride refining agents, this process is smokeless, odorless, and non-toxic, meeting environmental standards without corroding the equipment.
2. Core Hardware and Structural Reliability
The equipment features high-performance components to withstand high-temperature environments and frequent operations.
Refractory Graphite Components: The core rotor is made of high-purity graphite with excellent thermal shock resistance. The spindle speed is frequency-controlled (0-500 r/min) to suit different process requirements.
Precision Lifting and Transmission: Utilizing a Dawang reducer and chain drive system, the lifting process is stable. An independent frequency-controlled motor ensures precise movement when the rotor enters or exits the molten aluminum.
Gas Control Precision: Supports a Φ10 gas interface with a maximum flow of 45L/min. The inlet pressure is maintained at 0.2MPa-0.6MPa to optimize bubble dispersion.
3. Intelligent Operation and Process Management
The integrated human-computer interface enables automated control of the refining process.
Automated Control System: Based on PLC logic and a touchscreen interface, users can preset formula parameters for one-touch automatic program execution.
Real-time Monitoring: Equipped with tri-color indicators and a buzzer. Upon completion, the graphite head automatically stops rotating and lifts off the surface, ensuring operational safety.
Power Compatibility: Adapted for 440V/60Hz three-phase five-wire power systems, with a total power consumption of only 2.35kW.
Technical Specifications Summary
Treatment Process: Rotary injection dehydrogenation, physical adsorption deslagging (zero pollution).
Gas Parameters: Inert gas flow ≤45L/min, operating pressure 0.2-0.6MPa.
Power Configuration: 2.35kW total power, frequency-controlled spindle speed.
Control Performance: PLC automated program control with recipe settings and automatic lifting functions.
In the modern aluminum alloy casting industry, energy conversion efficiency and temperature control precision directly impact production costs and product quality. This case study analyzes the WDL-KGPS-1500 aluminum induction melting furnace (hydraulic tilting), highlighting its technical advantages and operational parameters at the 800KW power level.
1. Core Electrical Performance and Energy Conversion
The essence of induction melting lies in the optimization of electromagnetic induction efficiency and power factor.
High Power Density Solution: The system is configured with 800KW rated power, adapted for 440V/60Hz industrial power. Utilizing parallel rectification and inversion technology, it ensures a 100% startup success rate.
Melting Efficiency Indicators: For a rated capacity of 1.5 tons (maximum 1.8 tons) of aluminum, the melting time per furnace is only 70±5% minutes, with a stable tapping temperature of 780°C.
Power Factor Optimization: The power factor is maintained at >0.9, effectively reducing reactive power loss and enhancing energy utilization.
2. Structural Design and Durability Configuration
Strict industrial standards are applied to material selection for high-temperature melting environments.
Induction Coil Craftsmanship: Utilizes T2/TU1 grade high-purity electrolytic copper with a thickness of 5mm. The high-conductivity coil, combined with optimized inter-turn insulation, ensures strong electromagnetic conversion and long-term mechanical strength.
Hydraulic Tilting System: Equipped with a dual-cylinder drive, providing a tilting range of 0 to 95 degrees. Controlled via a manual valve, it offers stable performance without shocking or crawling, and can stay at any position to ensure safe and precise pouring.
Lid and Crucible Module: The furnace lid uses hydraulic or mechanical rotation for flexible opening; the crucible module is formed by 3mm iron plate bending and welding to precisely control the refractory lining's shape and volume.
3. Water Cooling System and Safety Redundancy
A stable cooling cycle is a prerequisite for the continuous operation of high-power equipment.
Classified Water Management: The system features independent water supplies for the power source (required flow ≥20 m³/h) and the furnace body (required flow ≥25 m³/h), ensuring sensors and silicon components remain within safe operating temperatures.
High-Performance Water-Cooled Cables: Made of T2 multi-strand copper wire encased in high-strength fire-resistant rubber tubing. Cold-formed connectors ensure excellent contact and tensile strength during high-current transmission.
Noise Control Standard: Through optimized electromagnetic frequency design, the operating noise is strictly controlled below 80db, complying with modern industrial health standards.
Technical Specifications Summary
Melting Capacity: Rated 1.5 Tons (Aluminum), melting time 70±5 mins/batch.
Electrical Configuration: 800KW power, 600-1000Hz frequency, power factor >0.9.
Core Materials: 5mm thick T2 copper coil, hydraulic tilting angle 0-95°.
Safety Redundancy: 100% startup success rate, dual-circuit water cooling (total demand ≥45 m³/h).