Medium-frequency induction heating furnace for heating lashing bar, and method

Abstract

The invention discloses a medium-frequency induction heating furnace for heating a lashing bar, and a method. The induction heating furnace comprises a pedestal, and the pedestal is coaxially providedwith a plurality of induction coils which are connected with a controller and are connected to a power supply. The exterior of the induction coils is provided with cooling water circulating pipes, and the input ends of the cooling water circulating pipes are jointly connected with one water incoming pipe. The water incoming pipe is connected with a water pump, and the output ends of the cooling water circulating pipes are jointly connected with one water outgoing pipe. The water outgoing pipe is connected with a water pump, and the water pump is connected with a water supplementing box. The water incoming pipe is connected with a heat exchanger, and the heat exchanger is connected with a tap water pipe. The induction heating furnace provided by the invention can control the temperature ofthe induction heating furnace in a better way, and reduces the size of a floating range of temperature.

Description

technical field [0001] The invention relates to a heating furnace, in particular to a medium-frequency induction heating furnace and method for heating binding rods. Background technique [0002] Induction heating furnace is a kind of heating furnace. This eddy current also has some properties of intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat. For example, if a metal cylinder is placed in an induction coil with an alternating intermediate frequency current, the metal cylinder is not in direct contact with the induction coil, and the temperature of the energized coil itself is already very low, but the surface of the cylinder is heated to red, or even melted. , and this speed of redness and melting can be realized only by adjusting the frequency and the strength of the current. If the cylinder is placed in the center of the coil, the temperature around the cylinder will be the same, and ...

AI Technical Summary

Problems solved by technology

However, the existing intermediate frequency induction heating furnace body is long and there is no suitable emptying equipment or device. In order to push the last piece of billet out of the furnace at the end of each batch of products or daily work, it is usually only possible to continuously fill the furnace. Metal blanks that need to be heated until the last section of the blank that needs to be heated is released from the furnace

Because the metal blanks themselves have the characteristics of electrical conductivity and magnetic conductivity, the metal blanks added later to empty the furnace eventually reach the same temperature as the blanks that need to be heated. This emptying process not only causes waste of electric energy, but also improves production. cost, and affects the heating effect of the billet that needs to be heated; at the same time, if the above-mentioned metal billet used to empty the furnace needs to be reheated when it is reused, its metallographic structure will be damaged, which will reduce the quality of the product

[0004] Because the medium frequency induction heating furnace is very important to the temperature control, and the existing induction heating furnace is still insufficient in controlling the temperature, and the temperature stability cannot be guaranteed.

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