Wuxi Wondery Industry Equipment Co., Ltd

I. Industry Insight: Critical Demands for VPI Technology in Industrial High-Voltage Motors and Transformers During the manufacturing and remanufacturing of high-voltage motors, special explosion-proof motors, and large power transformers, the insulation treatment of windings is a critical process determining the equipment's dielectric lifespan, mechanical integrity, and thermal dissipation performance. Traditional atmospheric dipping processes often leave microscopic air gaps and voids deep within the multi-layer coils. Under high-voltage electric fields, these residual air pockets are highly susceptible to Partial Discharge (PD), which exponentially accelerates insulation breakdown. The Vacuum Pressure Impregnation (VPI) process represents the global benchmark for resolving this bottleneck. By extracting air and moisture under deep vacuum conditions, the insulation resin is introduced via dynamic differential pressure to fully submerge the workpieces. Subsequently, positive pressure (typically up to $+0.6text{ MPa}$) is applied, forcing the resin to densely penetrate every micro-crevice of the windings. This significantly optimizes dielectric performance and heavily fortifies the windings' resistance against moisture, mold, and mechanical shock. With specialized pressure vessel engineering certifications and comprehensive electro-fluidic control expertise, WONDERY successfully delivered an export-standard heavy-duty VPI system to POWER WAVES ELECTROMECHANICAL CONT. LLC, a prominent electromechanical contractor in the UAE, overcoming their technical limitations in large-scale motor insulation processing. The technical specifications and proposals for this project are referenced from the document named "260602VPI1500-2000 Semi-auto Vacuum Impregnation Equipment System.docx". II. Technical Solutions and Parameterized Evidence 1. 1.5m Vertical Heavy-Duty Impregnation Tank (VPI Tank) — Blending High Pressure with Hermetic Reliability To facilitate the vertical loading and unloading profiles of large high-voltage motor stators and transformers, WONDERY engineered a high-integrity vertical vessel: Core Dimensions & Material Science: The main chamber features an upgraded effective working volume of $Phi1500 times 3000text{ mm}$, allowing it to accommodate longer shafts or larger heavy-duty winding assemblies seamlessly. The vessel head is forged from 16MnR boiler plate, the shell is fabricated from pressure-vessel-specific Q345-R steel, and the heavy flanges utilize 16MnR forged components, conforming strictly to Steel Pressure Vessels GB150-1998 standards. Extreme Pressure & Safety Interlocking: The rated positive working pressure reaches $+0.6text{ MPa}$ (fully adjustable), using filtered dry air supplied by the user. The limit vacuum depth achieves an ultra-low $100text{ Pa}$. The vessel comes standard with over-pressure audio-visual alarms and mechanical pressure-relief safety valves, accompanied by certified radiographic and welding test certifications. Hydraulic Teeth-Misaligned Locking Assembly: The tank cover utilizes an advanced upper and lower teeth-misaligned flange locking mechanism. The entire opening, closing, and locking sequences are driven by a $12text{ MPa}$ heavy-duty hydraulic station paired with non-contact proximity switches. The primary seal features an air-filling type silicone rubber sealing ring, ensuring zero-leakage performance under harsh cyclical shifts between vacuum and positive pressure. 2. Large-Capacity Resin Storage & Dynamic Temperature Chilling Hub — Preserving Resin Longevity Insulation resins (such as epoxies or polyesters) are highly temperature-sensitive and require constant low-temperature agitation when idle to prevent premature exothermic polymerization. WONDERY configured a smart storage system to manage this: Homogeneous Agitation Tank: The resin storage system is expanded to a $Phi1800 times 2000text{ mm}$ tank to efficiently match the material turnover of the deeper main chamber. It incorporates a multi-layer paddle agitator driven by an industrial motor-gearbox assembly, maintaining a precise speed range of $25 sim 36text{ rpm}$ to eliminate dead zones and ensure uniform resin viscosity. 100mm Thermal Barrier Jacket: The vessel exterior is heavily wrapped in a $100text{ mm}$ high-density insulation layer protected by stainless steel armor. The inner vessel incorporates a cooling jacket integrated with digital temperature transmitters for constant temperature tracking. Industrial Chilling Machinery: The system is paired with a $15text{ HP}$ ($415text{ V}$) high-capacity chiller delivering a cooling output of $50,000text{ W/H}$ and a chilled water flow rate of $8text{ m}^3text{/H}$. Operating on an aqueous glycol solution, the chiller automatically runs parallel to process requirements, locking the resin within its safe, low-temperature liquid threshold. 3. Upgraded Dual-Stage Vacuum Package & Industrial-Grade Safety Interlocks Dual-Stage Vacuum Array: The system incorporates a primary 2X-70 rotary vane vacuum pump backed by a larger-displacement ZJ-300 Roots blower, achieving a peak pumping speed of $300text{ L/S}$ to rapidly evacuate the 3000mm deep chamber down to target negative pressure. A heavy-duty vacuum buffer tank is positioned upstream of the pumps to effectively capture vaporized resin mist, protecting internal pump components. European Standard Electrical Architecture: The centralized power and control console operates on a localized $text{AC}415text{ V} / 50text{ Hz}$ three-phase four-wire grid, featuring premium Schneider low-voltage switchgear components. Fail-safe logic is hardwired into the system: the hydraulic mechanism is automatically isolated if the locking teeth are improperly positioned, and the main cover remains mechanically locked until all internal pressure is entirely vented, preventing human error. III. International Compliance, Delivery, and Warranty Engineering The VPI system has been successfully disassembled into modules, securely anchored onto specialized Flat Rack containers with export-grade protective wrapping, and delivered to the client's facility in the UAE. WONDERY provides a comprehensive technical documentation package including foundation layouts, weld radiographic reports, complete English operational schematics, and an extended 13-month product warranty from the date of shipment, ensuring dependable operation for regional engineering projects.

I. Industry Insight: Critical Demands for VPI Technology in Industrial High-Voltage Motors and Transformers      During the manufacturing and remanufacturing of high-voltage motors, special explosion-proof motors, and large power transformers, the insulation treatment of windings is a critical process determining the equipment's dielectric lifespan, mechanical integrity, and thermal dissipation performance. Traditional atmospheric dipping processes often leave microscopic air gaps and voids deep within the multi-layer coils. Under high-voltage electric fields, these residual air pockets are highly susceptible to Partial Discharge (PD), which exponentially accelerates insulation breakdown. The Vacuum Pressure Impregnation (VPI) process represents the global benchmark for resolving this bottleneck. By extracting air and moisture under deep vacuum conditions, the insulation resin is introduced via dynamic differential pressure to fully submerge the workpieces. Subsequently, positive pressure (typically up to $+0.6text{ MPa}$) is applied, forcing the resin to densely penetrate every micro-crevice of the windings. This significantly optimizes dielectric performance and heavily fortifies the windings' resistance against moisture, mold, and mechanical shock. With specialized pressure vessel engineering certifications and comprehensive electro-fluidic control expertise, WONDERY successfully delivered an export-standard heavy-duty VPI system to POWER WAVES ELECTROMECHANICAL CONT. LLC, a prominent electromechanical contractor in the UAE, overcoming their technical limitations in large-scale motor insulation processing. II. Technical Solutions and Parameterized Evidence 1. 1.5m Vertical Heavy-Duty Impregnation Tank (VPI Tank) — Blending High Pressure with Hermetic Reliability To facilitate the vertical loading and unloading profiles of large high-voltage motor stators and transformers, WONDERY engineered a high-integrity vertical vessel: Core Dimensions & Material Science: The main chamber features an effective working volume of $Phi1500 times 2000text{ mm}$. The vessel head is forged from 16MnR boiler plate, the shell is fabricated from pressure-vessel-specific Q345-R steel, and the heavy flanges utilize 16MnR forged components, conforming strictly to Steel Pressure Vessels GB150-1998 standards. Extreme Pressure & Safety Interlocking: The rated positive working pressure reaches $+0.6text{ MPa}$ (fully adjustable), using filtered dry air supplied by the user. The limit vacuum depth achieves an ultra-low $100text{ Pa}$. The vessel comes standard with over-pressure audio-visual alarms and mechanical pressure-relief safety valves, accompanied by certified radiographic and welding test certifications. Hydraulic Teeth-Misaligned Locking Assembly: The tank cover utilizes a advanced upper and lower teeth-misaligned flange locking mechanism. The entire opening, closing, and locking sequences are driven by a $12text{ MPa}$ heavy-duty hydraulic station paired with non-contact proximity switches. The primary seal features an air-filling type silicone rubber sealing ring, ensuring zero-leakage performance under harsh cyclical shifts between vacuum and positive pressure. 2. Intelligent Resin Storage & Dynamic Temperature Chilling Hub — Preserving Resin Longevity Insulation resins (such as epoxies or polyesters) are highly temperature-sensitive and require constant low-temperature agitation when idle to prevent premature exothermic polymerization. WONDERY configured a smart storage system to manage this: Homogeneous Agitation Tank: The resin storage system features a $Phi1600 times 1600text{ mm}$ tank. It incorporates a multi-layer paddle agitator driven by an industrial motor-gearbox assembly, maintaining a precise speed range of $25 sim 36text{ rpm}$ to eliminate dead zones and ensure uniform resin viscosity. 100mm Thermal Barrier Jacket: The vessel exterior is heavily wrapped in a $100text{ mm}$ high-density insulation layer protected by stainless steel armor. The inner vessel incorporates a cooling jacket integrated with digital temperature transmitters for constant temperature tracking. Industrial Chilling Machinery: The system is paired with a $15text{ HP}$ ($415text{ V}$) high-capacity chiller delivering a cooling output of $50,000text{ W/H}$ and a chilled water flow rate of $8text{ m}^3text{/H}$. Operating on an aqueous glycol solution, the chiller automatically runs parallel to process requirements, locking the resin within its safe, low-temperature liquid threshold. 3. Two-Stage High-Speed Vacuum Package & Industrial-Grade Safety Interlocks Dual-Stage Vacuum Array: The system incorporates a primary 2X-70 rotary vane vacuum pump backed by a high-capacity ZJ-150 Roots blower, achieving a peak pumping speed of $300text{ L/S}$. A heavy-duty vacuum buffer tank is positioned upstream of the pumps to effectively capture vaporized resin mist, protecting internal pump components. European Standard Electrical Architecture: The centralized power and control console operates on a localized $text{AC}415text{ V} / 50text{ Hz}$ three-phase four-wire grid, featuring premium Schneider low-voltage switchgear components. Fail-safe logic is hardwired into the system: the hydraulic mechanism is automatically isolated if the locking teeth are improperly positioned, and the main cover remains mechanically locked until all internal pressure is entirely vented, preventing human error.

Industry Insight: Stringent Demands for Material Precision in Heat Exchange and Manufacturing In modern industrial manufacturing, automotive heat exchange systems (such as condensers and evaporators), and precision electronic tube processing, the chemical composition tolerances, physical dimension accuracies, and cladding integrity of aluminum alloy strips and foils determine the yield rate of subsequent stamping, forming, and brazing. Standard commercial grades often fail to simultaneously meet high-strength, anti-corrosion, and specific brazing requirements. WONDERY satisfies these critical needs through specialized rolling and micron-level multi-layer cladding technologies. Technical Solutions and Parameterized Evidence 1. Premium 3003 Aluminium Alloy Strips (Aluminium Coil) To balance tensile strength and ductility during continuous stamping, WONDERY implemented strict grain structure control for the 3003 alloy: Multi-Specification Rolling: This project involved the concurrent delivery of two distinct widths of heavy-duty coils under the same grade (Aluminium Alloy 3003). The specifications are: Thickness 1.5 mm / Width 38 mm (ID: 500mm) and Thickness 1.5 mm / Width 16 mm (ID: 500mm), with 15 rolls (~1200 kg in total) delivered for each specification. Quality Consistency: Precision winding guarantees burr-free edges and micron-level thickness tolerances throughout hundreds of meters of uncoiling, preventing strip breakage or premature die wear during high-speed stamping. 2. Advanced 4343/3003/4343 Three-Layer Clad Aluminium Foil (Aluminium Strip) The core challenge in manufacturing heat exchanger fins and tubes lies in brazing performance. WONDERY resolved this by providing high-performance clad sandwich materials: Structural Composition: Features a multi-layer Aluminium Alloy 4343/3003/4343 composite structure with a thickness of just 0.1 mm and a width of 16 mm (ID: 200mm). A total of 25 rolls (~1000 kg) were delivered. Brazing Process Optimization: The core layer (3003) provides excellent structural strength and corrosion resistance, while the outer clad layers (4343) act as low-melting-point filler metals. During controlled atmosphere brazing (CAB) or vacuum brazing, the outer layers melt to form seamless joints while the core remains intact, eliminating the risks of cold joints or leakage. Bonding Integrity: Utilizing advanced hot-roll bonding, molecular-level interface fusion is achieved, preventing any delamination during subsequent reduction down to 0.1mm. 3. 0.08mm Ultra-Thin Radiator Aluminium Foil Ultra-Thin Processing: For high-efficiency cooling fin manufacturing, WONDERY delivered Aluminium Alloy 3003 foil with an ultra-thin specification of 0.08 mm thickness and 44 mm width (ID: 200mm), totaling 25 rolls (~1000 kg). Packaging and Protection: Because 0.08mm foil is highly susceptible to wrinkling and damage, a standardized moisture-proof and impact-resistant roll packaging method was adopted, restricting the unit weight to approx. 40 kg/roll to ensure perfect edges and zero oxidation upon arrival. Delivery Specifications and Trade Terms WONDERY strictly adheres to international trade execution protocols to ensure seamless and transparent supply chain fulfillment: Trade Term: FOB Shanghai, facilitating flexible logistics arrangements for global buyers. Lead Time: Full-scale precision rolling, slitting, quality inspection, and packaging were finalized within 30 days upon receipt of deposit. Shipping Strategy: Dispatched via centralized shipment (Partial Shipment Not Allowed) to guarantee that the entire batch arrives simultaneously, maintaining raw material homogeneity for the client's production line.