Configuration method of induction melting furnace power supply and furnace body

There are currently five common configurations of power supply and furnace body as follows.

①One set of power supply is equipped with one furnace body. This method has no spare furnace body, low investment, small floor space, high furnace use efficiency, and is suitable for intermittent production.

②One set of power supply is equipped with two furnace bodies. In this way, the two furnace bodies can work alternately, each as a spare. The replacement of the furnace lining wood affects production, and this configuration is generally adopted in foundries. A high-performance high-current furnace changer switch can be selected between the two furnace bodies to switch, making furnace change more convenient.

③N sets of power supplies are equipped with N+1 furnace bodies. In this way, multiple furnace bodies share a spare furnace body, which is suitable for workshops that require mass casting. High-performance high-current furnace changer switch can be used to switch the power supply between furnace bodies.

④One set of power supply is equipped with two furnace bodies of different capacities and different purposes, one of which is for smelting and the other is for heat preservation. The furnace body has different capacities. For example, a set of 3000kW power supply is equipped with a 5t smelting furnace and a 20t holding furnace, and a high-performance high-current furnace switch switch can be used between the two furnaces.

⑤One set of smelting power supply and one set of heat preservation power supply are equipped with two furnace bodies. This method is suitable for the production of small castings. Due to the small casting ladle and the long pouring time, the molten steel needs to be kept in the furnace for a certain period of time. Therefore, one electric furnace is used for smelting and the other is kept warm, so that both furnace bodies can be fully utilized to improve production efficiency. With the continuous advancement of power supply technology, the current one-to-two method (such as thyristor or IGBT half-bridge series inverter intermediate frequency power supply), that is, a set of power supply supplies power to two furnace bodies at the same time, one of which is used for smelting, and the other The two furnaces are used as heat preservation, and the power of the power supply is arbitrarily distributed between the two furnaces according to the needs.