Induction Heating Equipment for Thermal Assembly of Housing and Stator

In mechanical manufacturing, shafts and bushings are often assembled using induction heating, enabling smooth insertion without mechanical damage or surface scoring. This non-contact heating method is particularly valuable for hardened components where traditional press-fitting could cause micro-fractures. Bearings and shafts, critical components in rotating machinery, benefit from this method as it prevents deformation caused by uneven thermal gradients and ensures long-term reliability by maintaining optimal material properties. For instance, when mounting bearings on shafts, induction heating provides uniform expansion that preserves the bearing's internal clearance specifications.

Gears and shaft assemblies also frequently employ induction heating for thermal expansion applications. The process allows for seamless integration of gears onto shafts while maintaining critical dimensional accuracy and concentricity. This is especially crucial in high-performance applications like automotive transmissions or industrial gearboxes, where even minor misalignment can lead to premature wear. Additionally, induction heating is utilized in the assembly of hydraulic components (such as valve bodies and pistons), precision couplings (including shrink disc and flange couplings), and other engineered parts where temperature-controlled heating is essential. The technology ensures optimal interference fits in these applications while preventing thermal degradation of seals or surface treatments, ultimately enhancing the performance and durability of the assembled components. Modern induction systems often incorporate advanced temperature monitoring and closed-loop control to achieve repeatable results within tight tolerances.

Industrial induction heaters are modular in design, equipped with high-frequency power supplies (50kHz-500kHz), closed-loop temperature control systems and programmable PLC controllers. Its core components include copper induction coils (high temperature resistant to 1200 ° C) and IGBT inverter technology to ensure rapid temperature rise (typical rate of 150 ° C/s) and energy conversion efficiency ≥90%. The equipment supports multi-stage power adjustment, hot assembly of metal parts such as sleeves and gears, and the maximum workpiece diameter can reach 800 mm.

The equipment realizes non-contact heating through electromagnetic induction, avoids the oxidation problem of traditional flame heating, and the tolerance control accuracy reaches ±2℃. Equipped with infrared thermometer and automatic compensation algorithm to ensure temperature uniformity (temperature difference ≤5%). Power consumption is reduced by 30% in energy-saving mode and meets ISO 9001 energy standards. Protection class IP54, suitable for dust, oil environment, continuous working stability ≥99.5%.

Support customized coil and fixture, compatible with carbon steel, alloy steel and other materials. MES system is connected through Ethernet interface to realize real-time monitoring and traceability of production data. Optional dual-station operation mode, shorten single heating cycle to 15-30 seconds, improve production line efficiency by more than 40%.