Large compound radiant heating rod and preparation method thereof

Abstract

The invention discloses a large compound radiation heating rod and a preparation method thereof. The large-scale composite radiant heating rod and its preparation method include a fixed sleeve made of insulating material, and a plurality of installation column holes are evenly penetrated on the tube wall of the fixed sleeve along the axial direction of the fixed sleeve, and each installation A heating rod is inserted in the column holes, and the outer wall of the fixed sleeve adjacent to each installation column hole is provided with several fixing holes connected with the installation column holes. In the fixing holes and the installation column holes facing the fixing holes Filled with ceramic cement. In the large-scale composite radiant heating rod and its preparation method, a plurality of heating rods welded together are assembled in a fixed sleeve, which increases the radiation area and length of the heating rod to radiate heat into the furnace, and the outer fixed sleeve serves as a protective layer , high tensile and flexural strength, the damage rate of the heating rod is greatly reduced, so that the heating rod can be arranged in the heating furnace arbitrarily, and the heating volume of the electric furnace is increased, which is convenient for processing many large products.

Description

technical field [0001] The invention relates to a large compound radiation heating rod and a preparation method thereof. Background technique [0002] The heating furnace is an important production equipment in the high-temperature sintering fields of electronics, metallurgy, ceramics, and magnetic materials. As the heating element of the heating furnace, the heating rod is hung on the inner wall of the heating furnace. The air in the furnace heats the materials in the furnace, so the performance of the heating rod plays a vital role in the heating efficiency of the furnace. At present, the two most widely used heating rods are silicon carbide rods and silicon molybdenum rods. These two heating rods have a short service life. The service life of the atmosphere will be shortened, but on the contrary, the oxygen will be taken away from the carbon of the silicon carbide rod, which will be gradually eroded, and eventually it will be scrapped and unable to work. On the other ha...

AI Technical Summary

Problems solved by technology

At present, the two most widely used heating rods are silicon carbide rods and silicon molybdenum rods. These two heating rods have a short service life. The service life of the atmosphere will be shortened, and silicon carbon rods are the opposite. Oxygen will be taken away from the carbon, which will be gradually eroded, and eventually lead to scrapping and failure to work.

On the other hand, these two kinds of heating rods have low tensile strength at high temperature, high brittleness, and high damage rate in the temperature fragile area. In addition, due to their own weight, the length of the

Images