Heating low carbon steel

Objective

We are using our 2.5 kW induction unit at higher frequencies to preheat  low carbon steel (12L14) to forging temperature using rounds from 1/4″ (0.60 cm) to 5/8″ (1.60 cm) diameter, 1″ (2.54 cm) to 3″ (7.62 cm) long. The end of these workpieces, over a length of 1/8″ (0.30 cm) to 3/4″(1.90 cm), are heated to forging temps of approximately 2100°F (1148°C)and higher (bright red to yellow).

Equipment

SM-2

Industry: Manufacturing

Material: (12L14) low carbon steel

Temperature: 1148°C (2100°F)

Required power: 2.5kW

Test 1

Materials
(12L14) low carbon steel (solid) 0.57” OD, 3.03” Height

Power: 2 kW
Temperature: 2100°F (1148°C)
Time: 33 seconds

Test 2

Materials
(12L14) low carbon steel (solid) 0.22” OD, 2 “Height

Power: 2 kW
Temperature: 2100°F (1148°C)
Time: 4 seconds

1. The ends of the parts were put in the coils.

2. The heat was applied to the parts and temperature evaluated using an IR pyrometer.

Results and Conclusions:

Steel has very good properties and thus many practical applications. There are three different types of steel – low carbon, medium carbon, and high carbon steel.
Low carbon steel has a carbon content of 0.15% to 0.45% and it is the most preferred form of steel for heat treating. Heat treatment allows the softening of the metal for future processes like forging or welding.

Induction heating delivers quick and efficient heat. It is safe for the operator and allows you to realize higher production volumes. The workpiece is precisely heated which cuts down energy consumption compared to other heating techniques. You can also achieve maximum efficiency by determining the operating frequency of the induction system according to the size of the workpiece.

Based on power requirements we decided that our UltraHeat SM-2/200 2kW power supply we’ll be a perfect match for this application. Since the customer wanted just to replace his induction heating system while keeping the process and coils the same – we performed heating tests using customer’s coils. The temperature of the parts was evaluated using an IR pyrometer.

Read more about other induction forging applications.

To request more information about this particular Application test, please contact us.

Reference Info: Application Note 3463-5467

Pictures

Video 

Request information or contact us about this application. Reference info: Application Note 3463-5467

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