Project Background and Core Process Requirements
WONDERY recently delivered an RT-90-9 precision pit-type gas carburizing furnace to a client in Sudan (Mohammed Yousif). The client specializes in the surface carburizing of various small and medium-sized metal parts. Given the high sensitivity of the carburizing process to carbon potential control and atmospheric sealing, the client required a system with high automation and atmosphere circulation stability.
Technical Solutions and Parameterized Evidence
1. Dual-Zone Temperature Control and Forced Circulation (±5 ℃ Uniformity)
To address the vertical temperature gradient common in deep pit furnaces, WONDERY implemented a zoned control strategy:
Control Architecture: The furnace is divided into 2 independent heating zones.
Circulation Power: A powerful centrifugal fan integrated into the lid, working with a 310S (0Cr25Ni20) heat-resistant stainless steel muffle, ensures forced atmosphere and thermal flow circulation. This maintains a temperature field uniformity of ±5 ℃ within the working zone.
High-Precision Instrumentation: The control system utilizes Japanese Shimaden SRS13A industrial PID controllers, achieving an instrument control accuracy of ±1 ℃.
2. Fully Automated Carbon Potential and Process Management
The equipment achieves intelligent control from heating to the completion of carburizing:
HMI: Equipped with a 10-inch industrial touchscreen that integrates temperature settings, process monitoring, and historical curve storage.
Atmosphere Regulation: Employs a drip-type atmosphere control system. Media is introduced via precision flowmeters and droppers. The system automatically manages temperature, carbon potential, time, and dripping rates to ensure consistent carburizing layer depth.
3. Reinforced High-Temperature Structure and Sealing
Muffle Specifications: Features a 310S grade stainless steel muffle designed to withstand the 1100 ℃ design temperature, providing excellent resistance to oxidation and carburizing corrosion.
Insulation System: The lining combines high-performance lightweight bricks with Shandong Luyang aluminosilicate fiber modules. This configuration minimizes heat loss, with a non-load temperature rise time of ≤1.5 hours.
Sealing Technology: High-temperature resistant sealing materials are used at the lid-to-body interface to maintain a micro-positive pressure, preventing atmosphere leakage or air infiltration.
4. Safety Protection and Interlock Systems
Electrical Safety: Includes over-temperature alarms and automatic power cut-off functions; safety interlocks are established between the lid lifting mechanism and the heating power supply.
Component Optimization: Heating elements made of 0Cr25Al5 high-resistance alloy are secured with high-alumina ceramic screws, extending service life under frequent heat treatment cycles.
Delivery Specifications and Key Parameters
Effective Working Dimensions: Ø 600 × 1000 mm.
Rated Power: 80 kW (Dual-zone independent regulation).
Design Temperature: 1100 ℃.
Included Components: 310S muffle tank, stainless steel charging basket, automated control cabinet, and a complete dripping system.
Project Background and Core Process Requirements
In aluminum alloy casting, hydrogen content and non-metallic inclusions directly affect the density and mechanical properties of the castings. WONDERY recently delivered a Fixed Aluminum Liquid Degassing Box equipped with a Crane-Mounted Heating Cover. The client's requirements focused on efficient online hydrogen removal while maintaining flexible thermal compensation to prevent temperature drops or secondary hydrogen absorption during non-degassing phases.
Technical Solutions and Parameterized Evidence
1. Structural Design for Efficient Purification
As a core purification station between the furnace and the casting machine, the degassing box features targeted optimizations:
Operating Conditions: Designed for molten aluminum temperatures of 720 ℃ – 850 ℃, suitable for pure aluminum, Al-Si, Al-Mg, and other alloys.
Mode Switching: Used in conjunction with a mobile rotary degasser. During idle periods, the heating cover is hoisted by a gantry crane to switch the box into a constant-temperature preservation mode.
2. Precision Thermal Compensation and Heating Cover Technology
To maintain constant melt temperature, the heating cover integrates a high-performance system:
Heating Elements: High-resistance alloy wires arranged in a corrugated pattern ensure uniform radiant heating across the melt surface.
Insulation Performance: The cover interior utilizes Shandong Luyang aluminosilicate fiber modules, pre-compressed to minimize heat loss and prevent surface oxidation.
Control Accuracy: Equipped with a PID intelligent controller to monitor the cover's thermal field, minimizing temperature fluctuations during holding periods.
3. Stringent Installation and Oven-Drying Standards
To ensure the longevity of the refractory lining, WONDERY implemented a mandatory oven-drying protocol:
Dehydration: Room temperature to 300 ℃ (2-hour hold) to remove all moisture.
Stress Relief: 300 ℃ to 500 ℃ (2-hour hold) to release thermal stress in the refractory.
Operating Readiness: Final ramp to 750 ℃ (2-hour hold), with the heating rate strictly kept at ≤50 ℃/h to prevent cracking.
4. Safety Protection and Mechanical Reliability
Safety Factor: Lifting lugs are designed to bear ≥1.5 times the weight of the cover, ensuring absolute safety during crane operations.
Electrical Safety: System insulation resistance is ≥1 MΩ, with reliable grounding and limit switches to prevent accidental collisions during hoisting.
Delivery Specifications and Key Configurations
System Components: Fixed degassing box, crane-mounted heating cover, and intelligent electrical control cabinet.
Material Standards: High-grade refractory materials combined with stainless steel framing for superior resistance to molten aluminum erosion.
Operational Standards: Includes detailed safety protocols, such as mandatory tool preheating and protective gear requirements to prevent molten metal splashes.
Project Background and Core Process Requirements
WONDERY recently completed the manufacturing and delivery of a WDL-HL-100-6 aluminum alloy solution and quenching furnace. Aluminum alloy heat treatment is highly sensitive to "quenching transfer time" to prevent the precipitation of strengthening phases. The client’s core requirement was to ensure workpieces move from the heating chamber to the quenching tank rapidly while maintaining precise temperature uniformity within the furnace.
Technical Solutions and Parameterized Evidence
1. Millisecond-Response Rapid Quenching System
To guarantee the physical properties of aluminum alloys, WONDERY optimized the lifting and dropping mechanisms:
Transfer Speed: Utilizing a dual-speed winch with variable frequency control, the time from the workpiece leaving the furnace to being fully submerged in the quenching medium is controlled within