Magnetic material sintering furnace preheating system

Abstract

The invention discloses a preheating system for a magnetic material sintering furnace, which belongs to the field of magnetic material sintering furnaces. The magnetic material sintering furnace preheating system, in this scheme, when the sintering furnace cools down normally, the high-temperature gas will flow uniformly to the heating chamber when it enters the heating chamber from the connecting channel Every corner of the warehouse is not easy to cause uneven temperature distribution in the heating chamber, so that the temperature in the heating chamber is balanced from left to right, and it is easy to preheat. At the same time, the different compression springs located on the same side wall of the connecting channel are selected with different elastic coefficients to further increase the adjustability of the heat exchange rate between the heating chamber and the connecting channel, and to facilitate the regulation of the cooling rate in the sintering furnace , It can realize the drying of the magnetic core blank in advance through the pre-heating system, shorten the sintering time of the magnetic core product, increase the sintering capacity of the kiln, save energy and reduce costs.

Description

technical field [0001] The invention relates to the field of magnetic material sintering furnaces, in particular to a preheating system for magnetic material sintering furnaces. Background technique [0002] The sintering furnace is a kind of ceramic green body solid particles bonded to each other at high temperature, the grains grow, the voids (pores) and grain boundaries gradually decrease, the total volume shrinks and the density increases through the transfer of substances, and finally A furnace that becomes a dense polycrystalline sintered body with a certain microstructure refers to a special equipment that enables the powder compact to obtain the required physical and mechanical properties and microstructure through sintering. The inner area of ​​the sintering furnace is artificially divided into an inner rail area near the sintering center with a higher temperature and an outer rail area far away from the sintering center with a lower temperature. [0003] In the pr...

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Problems solved by technology

[0003] In the production process of magnetic materials, especially soft magnetic manganese zinc ferrite cores must be sintered to form products, usually using a single-plate or double-plate tunnel kiln for sintering, and the magnetic core products need to be heated during the sintering process to drain water, deglue, High-temperature sintering (1300°C-1400°C), heat preservation, cooling and other processes. In order to speed up the cooling rate in the kiln cooling process, the temperature must be lowered through external conditions. Air cooling and water cooling are usually used to bring the surface temperature of the magnetic core to normal temperature. During the air cooling process of the magnetic core, a large amount of hot air is drawn out by the cooling fan, which wastes heat energy resources.

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