A kind of electric porcelain insulator and preparation method thereof
A technology of insulators and electric porcelain, applied in the field of insulator preparation, can solve the problems of heavy pollution in the working area and surrounding environment, high heating energy consumption, flower glaze, etc., to reduce labor costs and energy consumption costs, low operating skill requirements, and glaze layer thickness uniform effect
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[0054] The present invention also provides a preparation method of an electric porcelain insulator, comprising the following steps:
[0055] A) After granulating the pretreated raw materials, raw material granules are obtained;
[0056] B) After the raw material granules obtained in the above steps are pressed and trimmed, a blank is obtained;
[0057] C) After the blank obtained in the above steps is glazed and fired, an electric porcelain insulator is obtained.
[0058] In the invention, firstly, the pretreated raw materials are granulated to obtain raw material granules.
[0059] The present invention has no special restrictions on the specific steps and parameters of the pretreatment, and the pretreatment steps and parameters of the electric porcelain insulator raw materials well known to those skilled in the art can be used. Selection and adjustment are required, and the pretreatment steps in the present invention include one or more of batching, grinding and sieving, m...
Embodiment 1
[0087] Firstly, the raw materials are prepared according to the mass percentage composition, 48% of calcined bauxite and 18% of feldspar. Hubei clay 7%, ball clay 27%. Send the above-mentioned raw materials into a 15t ball mill for ball milling. After 30 hours of ball milling, 99% of the mixed raw materials are obtained with a particle size of less than 45 μm. The average particle size of the material is 0.3mm, and the moisture content is 2.8%.
[0088] Then the above-mentioned powder is sent to an isostatic press for pressing process to obtain a blank, the pressing pressure is 110MPa, and pressed for 30 minutes; then the blank is sent to a dry-process numerical control blank trimming machine, and the blank trimming tool is used to perform blank trimming molding process to obtain a blank pieces.
[0089] see figure 1 , figure 1 The front view, side view and top view of the trimming tool provided by the present invention.
[0090] Then put the blank into a semi-automatic g...
Embodiment 2
[0095] Firstly, the raw materials are prepared according to the mass percentage composition, 49% of calcined bauxite and 19% of feldspar. Hubei clay 7%, ball clay 25%. Send the above-mentioned raw materials into a 15t ball mill for ball milling. After 30 hours of ball milling, 99% of the mixed raw materials are obtained with a particle size of less than 45 μm. The average particle size of the material is 0.35mm, and the moisture content is 2.7%.
[0096] Then the above-mentioned powder is sent to an isostatic press for pressing process to obtain a blank, the pressing pressure is 105 MPa, and pressed for 35 minutes; then the blank is sent to a dry-process numerical control blank trimming machine for blank trimming and forming process to obtain a blank.
[0097] Then put the blank into a semi-automatic glazing machine for the glazing process to obtain a glazed blank with a glaze slurry moisture content of 40.5%, a glaze temperature of 50°C, and an average glaze layer thickness ...
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