Ambrell EKOHEAT® Induction Heating System for Brazing

Overview

The Ambrell EKOHEAT® Induction Heating System is a high-frequency, solid-state induction power supply engineered for precision thermal processing in industrial brazing applications. Operating within a stable 50–150 kHz frequency range, the system leverages electromagnetic induction principles—where alternating current in a copper coil generates a time-varying magnetic field that induces eddy currents directly within electrically conductive workpieces—enabling rapid, localized, and controllable resistive heating without physical contact. Unlike conventional convection or radiant heating methods, EKOHEAT® delivers energy only to the target zone, minimizing thermal impact on adjacent components and supporting tight-tolerance assembly processes required in aerospace, automotive, medical device, and HVAC manufacturing. Its design adheres to fundamental electromagnetic compatibility (EMC) and electrical safety standards per IEC 61000-6-3 and UL 508A, ensuring robust integration into automated production lines.

Key Features

• Proprietary Variable Power Architecture (VPA): Enables dynamic load matching across diverse part geometries and material types—including copper, aluminum, stainless steel, and nickel alloys—without manual tuning or impedance compensation hardware.
• eVIEW™ Control Software: A Windows-based interface supporting real-time temperature profiling (via optional pyrometer integration), programmable multi-step heating cycles, and full audit-trail logging compliant with FDA 21 CFR Part 11 requirements for regulated industries.
• High-Efficiency Solid-State Inverter Design: Achieves >90% electrical-to-thermal conversion efficiency; eliminates standby losses associated with furnace idling and reduces cooling water demand by up to 40% versus legacy thyristor-based systems.
• Modular Scalability: Configurable from 10 kW to 270 kW output, with standardized 3-phase input (360–520 VAC) and consistent 50–150 kHz operating bandwidth—ensuring process repeatability during capacity expansion or line replication.
• Non-Contact, Flame-Free Operation: Eliminates open-flame hazards, combustion byproducts, and oxidation concerns inherent in torch brazing—supporting cleanroom-compatible environments and reducing post-process cleaning requirements.

Sample Compatibility & Compliance

EKOHEAT® systems are validated for use with ferrous and non-ferrous metals commonly employed in capillary brazing, dip brazing, and induction-assisted furnace preheating. The system supports joint geometries ranging from micro-scale electronic interconnects (300 mm OD). All models comply with ISO 9001:2015 quality management systems and meet CE marking requirements under the Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. For GMP-regulated facilities, eVIEW™ software supports user-level access control, electronic signatures, and data export in CSV or XML formats traceable to NIST-traceable calibration records.

Software & Data Management

eVIEW™ provides deterministic closed-loop temperature control via analog or digital inputs from infrared pyrometers, thermocouples, or encoder-synchronized positional feedback. Each heating cycle stores timestamped parameters—including power output (%), frequency (kHz), coil current (A), and measured temperature (°C)—with configurable retention policies and encrypted local database storage. Exported datasets conform to ASTM E2923-22 guidelines for thermal process data integrity and support statistical process control (SPC) analysis using external Minitab or JMP platforms. Audit logs record all operator actions, parameter changes, and system faults—fully aligned with GLP/GMP documentation expectations.

Applications

• Controlled-atmosphere brazing of heat exchanger cores (aluminum or copper alloys)
• Pre-heating of turbine blade shrouds prior to diffusion bonding
• Localized annealing of stainless steel tubing joints in pharmaceutical fluid handling systems
• Induction-assisted soldering of high-reliability PCB assemblies with thermally sensitive components
• Thermal forming of metal-polymer hybrid structures in EV battery module assembly

FAQ

What is the typical ramp rate achievable with EKOHEAT® systems during brazing cycles?

Typical heating rates range from 50°C/s to over 200°C/s depending on part mass, geometry, and material conductivity—significantly exceeding oven-based alternatives while maintaining ±2°C thermal uniformity across critical joint zones.
Can EKOHEAT® be integrated into existing PLC-controlled production cells?

Yes. Standard EtherNet/IP, Modbus TCP, and Profibus DP communication protocols are supported, enabling seamless handshaking with Allen-Bradley, Siemens, and Beckhoff controllers for synchronized part indexing and thermal cycle triggering.
Does Ambrell provide application engineering support for process validation?

Ambrell offers full-service thermal process development—including coil design, thermal modeling (using COMSOL Multiphysics®), and DOE-based parameter optimization—supported by ISO/IEC 17025-accredited test laboratories in Rochester, NY.
Are spare parts and technical documentation available globally?

All service manuals, schematics, and firmware updates are accessible through Ambrell’s secure customer portal; critical spares—including IGBT modules, DC bus capacitors, and water-cooled busbars—are stocked at regional distribution centers in Germany, Singapore, and Mexico.