An integrally formed ceramic heating body and its preparation process

Abstract

The present invention relates to the technical field of preparation technology of a ceramic heating body, in particular to an integrally formed ceramic heating body and its preparation process. The integrally formed ceramic heating body is composed of 50-95% ceramic raw materials and 5-50% heating raw materials , the ceramic raw material is composed of 50‑95% Si 3 N 4 , 0.1-10% of MgO, 0.1-5% of Y 2 o 3 , 0.1‑5% Al 2 o 3 , 0.1‑5% SiO 2 , 0.1‑5% La 2 o 3 , 0.1‑5% BN composition, and the exothermic material is MoSi 2 , TiC or a mixture of two kinds; the preparation process of the ceramic heating body is mixing, ball milling, filtering, forming, pre-sintering, sintering, polishing and electrode connection processes. The manufacturing process is simple, which is conducive to continuous production and production. The efficiency is high, the production cost is low, and it is beneficial to realize large-scale production; the ceramic heating body of the present invention has long service life, stable power and high heating efficiency.

Description

technical field

[0001] The invention relates to the technical field of preparation technology of a ceramic heating body, in particular to an integrally formed ceramic heating body and a preparation technology thereof. Background technique

[0002] At present, the electric heating element of the traditional hair dryer is made of electric heating wire, which is installed at the air outlet of the hair dryer. Heating with a heating wire not only has a large radiation, but also the heating wire is in contact with air during the heating process, so it is easy to oxidize, and the heating wire will burn out after repeated power-on and power-off, and the service life is short.

[0003] The heater is a forced convection heating device. The traditional heater uses a PTC heater for heating, and uses a fan to agitate air to flow through the PTC electric heating element to force convection, which is the main heat exchange method. However, the PTC heating element contains lead, and the im...