Since the customer wanted just to replace their induction heating system while keeping the process and coils the same – we performed induction heating tests using customer’s coils. We heated the parts to forging temperature or higher (bright red to yellow). The temperature of the parts was checked using an IR pyrometer.
We used a Lab Ultraheat SM-2 2/kW system to perform two tests with two customer’s coils as follows:
Test 1: Material – Low carbon steel (12L14) bar 0.57” (19 mm) OD, 3” (76 mm) long. Heated section ¾” (19 mm). Coil used -customer’s 5 turn, 1” (2.54 cm) OD coil. Forging temperature of 2100°F (1148°C) achieved in 33 sec. with 2kW of power.
Test 2: Material – Low carbon steel (12L14) bar 0.22” (5.6 mm) OD, 2” (50 mm) long. Heated section 1/4″ (6.35 mm). Coil used – customer‘s 2 turn, 0.5” (12.7 mm) OD coil. Forging temperature of 2100°F (1148°C) achieved in 4 sec. with 2kW of power.
These heating times are well within the customer’s target and outperform their existing induction heating system with 15%.
Based on the power requirements and the results from the testing, we recommended the UltraHeat SM2- 2 kW Induction heating system. It efficiently heats the whole range of parts achieving heating times of maximum of 40 seconds for the largest part, which was acceptable for the customer.
Industry: Foundries & Metalworking