Wuxi Wondery Industry Equipment Co., Ltd

Project Background and Core Process Requirements WONDERY recently completed the delivery of an HRJ3-130-9 large-scale pit-type anaerobic annealing furnace. Primarily used for non-ferrous metal parts and pipes, the project required strict oxidation control. The client prioritized atmosphere integrity at the 850 ℃ operating temperature and high thermal consistency for the large-diameter (Ø1400mm) loading area. Technical Solutions and Parameterized Evidence 1. Structural Sealing and 321 Stainless Steel Muffle To achieve oxygen-free heating in a fully sealed state, WONDERY optimized the muffle and sealing interface: Muffle Material: Welded from 10mm thick 321 stainless steel with an elliptical head bottom to manage thermal expansion. Cooling and Sealing: The flange, machined from 30mm carbon steel, features a high-temperature silicone seal at the top and a water-cooling channel at the bottom. Secured by 10 manual compression screws, it ensures consistent atmosphere purity. 2. Dual-Zone Control and Thermal Stability (±10 ℃) For the Ø1400 × 1500 mm chamber, the system utilizes zoned management to eliminate gradients: Heating Zones: The furnace is divided into 2 independent zones, each with a dedicated heating group, ensuring balanced thermal distribution across the large volume. Control Precision: Managed by a Japanese Shimaden PID controller and a 10.1-inch industrial touchscreen, maintaining temperature field uniformity within ±10 ℃. Energy Efficiency: With a rated power of 130kW (1-100% adjustable), the empty furnace power loss is restricted to 13kW, demonstrating superior thermal retention. 3. High-Temperature Heating Elements and Mounting Material Standards: Utilizes 0Cr25Al5 high-resistance alloy strips. Lead-out rods (φ16) are made of the same material with professional terminals to ensure reliable high-current transmission. Insulation Support: Elements are secured using specialized high-alumina ceramic screws and washers. The washers create a gap between the fiber lining and the elements, maximizing heat radiation while eliminating the risk of thermal short circuits to the shell. 4. All-Fiber Energy-Saving Lining Insulation System: The furnace employs a full silicate fiber lining sourced from Shandong Luyang. Advantages: The low thermal mass of the fiber lining allows for a rapid ramp-up. Non-load heating time is ≤1.5 hours, significantly enhancing production efficiency. Delivery Specifications and Key Parameters Effective Working Dimensions: Ø 1400 × 1500 mm. Rated Temperature: 900 ℃. Normal Operating Temperature: 850 ℃. Safety Features: Includes over-temperature alarms and dedicated atmosphere ports for nitrogen protection to facilitate high-quality anaerobic annealing.

Project Background and Core Process Requirements WONDERY recently completed the delivery of an HRJ3-150-11 large-scale pit-type anaerobic annealing furnace. Designed for non-ferrous metal parts and pipes, the project required a strictly anaerobic environment at 800-1000 ℃ to prevent oxidation. The client prioritized atmosphere integrity and temperature uniformity for large-diameter workpieces (Ø1400mm). Technical Solutions and Parameterized Evidence 1. Reinforced 310S Vacuum Muffle Structure To meet the requirements of sealed heat treatment, WONDERY optimized the muffle design: Material Specifications: The muffle is welded from 10mm thick 310S (0Cr25Ni20) heat-resistant stainless steel, featuring an elliptical head at the bottom to manage thermal stress. Dual Sealing Technology: The flange is precision-machined from 304mm carbon steel, integrating a high-temperature silicone seal at the top and a water-cooling channel at the bottom. Secured by 10 manual compression screws, it ensures zero leakage during high-temperature cycles. 2. Dual-Zone Control and Thermal Consistency (±10 ℃) Given the large dimensions, a zoned control strategy was employed to eliminate vertical gradients: Control Architecture: The furnace is divided into 2 independent heating zones, each with its own group of elements. Precision Hardware: Powered by a Japanese Shimaden PID controller and a 10.1-inch industrial touchscreen, maintaining temperature field uniformity within ±10 ℃. Ramp-up Efficiency: With a rated power of 150kW (1-100% adjustable), the non-load heating time is ≤1.5 hours, enhancing throughput. 3. Ceramic Screw Wall-Mounted Heating System Material Standards: Elements are made of 0Cr25Al5 high-resistance alloy strips, with φ16 lead-out rods ensuring reliable high-current transmission. Short-Circuit Prevention: Strips are secured using specialized high-alumina ceramic screws and washers. This creates a gap between the fiber lining and the elements, maximizing heat radiation while eliminating the risk of thermal short circuits to the shell. 4. High-Efficiency All-Fiber Insulation Lining Process: The furnace utilizes all-fiber insulation sourced from Shandong Luyang. Energy Performance: Through high-density compression, the empty furnace power loss is restricted to 15kW, significantly reducing long-term operational costs. Delivery Specifications and Key Parameters Effective Working Dimensions: Ø 1400 × 1500 mm. Design Temperature: 1100 ℃ (Normal use: 800-1000 ℃). Automation: Features process curve recording, over-temperature audio-visual alarms, and safety interlocks. Atmosphere Support: Includes dedicated ports for nitrogen or other inert gas protection.

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.