Home · Induction Hardening Machine
LZ Induction Heating Systems
Induction Hardening Machine Manufacturer
Induction hardening heats a surface or a zone, then quenches it, so the case is hard and the core stays tougher. LZ builds the power supply and the quenching station. High-frequency LZ and LZCG sets suit small gears, pins, shafts and tool edges. Medium-frequency and KGPS sets suit larger shafts and deeper cases. The catalogue shows quenching transformers, CNC and vertical stations, and examples for gears, shafts, knife edges, guide rails and bores. Case depth follows frequency, power, heating time and the quench. Send the diameter, the steel grade, the required depth and the hardness.
What to check before you enquire
- Case depth is not the same number as kilowatts.
- Quench can be spray, and the station can be manual or CNC.
- Shafts, gears, pins, tools and rails.
- Power supply and inductor are quoted together.
Typical applications
- Shafts
- Gears
- Pins
- Tools
- Guide rails
Catalogue models
| Work diameter | Typical power | Typical frequency | Case, lower | Case, upper | Case, total |
|---|---|---|---|---|---|
| Under 5 mm (0.20 in) | under 30 kW | over 35 kHz | 0.65 mm (0.03 in) | 2.6 mm (0.10 in) | 1.3 mm (0.05 in) |
| 5–15 mm (0.20–0.59 in) | 30–50 kW | about 20 kHz | 0.9 mm (0.04 in) | 3.5 mm (0.14 in) | 1.75 mm (0.07 in) |
| 15–30 mm (0.59–1.18 in) | 50–80 kW | about 10 kHz | 1.25 mm (0.05 in) | 5.0 mm (0.20 in) | 1.9 mm (0.07 in) |
| 30–200 mm (1.18–7.87 in) | 80–150 kW | about 8 kHz | 1.3 mm (0.05 in) | 5.5 mm (0.22 in) | 2.7 mm (0.11 in) |
| 200–500 mm (7.87–19.69 in) | 150–350 kW | about 6 kHz | 1.6 mm (0.06 in) | 6.5 mm (0.26 in) | 3.25 mm (0.13 in) |
| 500–800 mm (19.69–31.5 in) | 300–500 kW | about 4 kHz | 1.6 mm (0.06 in) | 7.9 mm (0.31 in) | 5 mm (0.20 in) |
| 800–1200 mm (31.5–47.24 in) | 500–800 kW | about 2.5 kHz | 2.4 mm (0.09 in) | 10 mm (0.39 in) | 8 mm (0.31 in) |
| Over 1500 mm (59.06 in) | 800–1200 kW | about 1 kHz | 2.5 mm (0.10 in) | 16 mm (0.63 in) | 8 mm (0.31 in) |
Figures are taken from the LZ catalogue. Final power, frequency and capacity depend on the metal, coil, lining, duty cycle and your mains voltage. Ask for a technical proposal before you order. Figures in parentheses are US units (pounds, inches, feet, °F, psi).
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