Low-temperature hot air circulation heat treatment furnace for magnetic core and application method of heat treatment furnace

Abstract

The invention relates to a low-temperature hot air circulation heat treatment furnace applicable to a non-crystalline or ultra-crystalline magnetic core or a magnetic ring, and an application method of the heat treatment furnace. The heat treatment furnace comprises a furnace body, wherein a heating furnace pipe, a first heat treatment furnace pipe and a second heat treatment furnace pipe are arranged in the furnace body; the first heat treatment furnace pipe is provided with a control valve I and a control valve II; the second heat treatment furnace pipe is provided with a control valve III and a control valve IV; the heating furnace pipe is internally provided with a heating device and a centrifugal fan; the furnace body is externally provided with a gas pipeline connected with a vacuumizer; and the gas pipeline is communicated with the two furnace pipes, provided with a ventilation valve I and a ventilation valve II, and connected with a gas inlet pipeline communicated with inert shielding gas. The heat treatment furnace and the application method have the benefits that 1) the two heat treatment furnace pipes are alternately used, so that waste heat is utilized effectively, and the energy consumption is reduced; 2) a convective heat transfer mode is adopted, so that temperature uniformity and the transfer speed are ensured, and the product quality is improved; and 3) the furnace loading quantity of a product is increased; a heat treatment space of the product is utilized effectively; and the energy consumption of the single magnetic core is reduced.

Description

technical field [0001] The invention belongs to the technical field of heat treatment, and in particular relates to an energy-saving, high-efficiency heat treatment furnace suitable for low-temperature hot air circulation heat treatment furnaces for amorphous and ultramicrocrystalline magnetic cores or magnetic rings and a method for using the same. Background technique [0002] Amorphous and ultrafine crystals are a new type of magnetically permeable material with excellent magnetic properties and a very broad market prospect. Generally, the single-roller planar casting method is used to make amorphous and ultrafine crystals into thin strips, and then wind them into magnetic rings by winding machines, and then use heat treatment to eliminate stress or form nanocrystalline structures inside the magnetic rings. [0003] At present, there are two heat treatment and sintering methods applied to amorphous and ultrafine crystal magnetic cores or magnetic rings, one is vacuum heat...

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Problems solved by technology

[0004] The present invention mainly aims at the problems of poor heat treatment effect and low treatment efficiency in existing heat treatment methods, and provides a low-temperature hot air circulation heat treatment furnace for magnetic cores with simple process, energy saving and high heat treatment efficiency and its use method

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