Manufacturing method of special-shaped mica parts
A manufacturing method and mica technology, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of easy delamination, large waste of raw materials, parts scrapped and discarded before cutting, etc., to achieve the effect of increasing density
Active Publication Date: 2019-02-15
苏州苏绝电工材料股份有限公司
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Problems solved by technology
[0004] 1. The processing process is complicated and the cycle is long, the waste of raw materials is large, and the manufacturing cost is high;
[0005] 2. The board is made of hundreds or even thousands of sheets of single-layer mica paper, which is easy to be layered during processing. Any processing process will cause parts to be scrapped until they are completely discarded due to layering;
[0006] 3. The binder is silicone resin, the long-term working temperature is less than 250°C, and the application range is limited
Method used
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Embodiment
[0030] Such as figure 1 As shown, the present embodiment is completed through the following technical routes:
[0031] S1: Ingredients: 20 parts by weight of -20 mesh mica powder, 40 parts of -8 mesh mica powder and 30 parts of -120 mesh mica powder, 10 parts of short glass fibers with a length of less than 10mm, and stir all the ingredients evenly ; When the mica powder with different particle sizes is used for bonding, it fully fills the gap between each other and increases the density of the mica parts. The mechanical strength of the mica parts obtained by fully mixing the mica powder and short glass fibers includes toughness, bending resistance, and durability. Impact has been significantly improved. When the working temperature of mica parts is less than 500°C, use natural mica powder, and when the working temperature of mica parts is 500-1000°C, use artificial mica powder.
[0032] S2: Preparation of water-soluble binder: Take 10 parts of ammonium dihydrogen phosphate,...
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Abstract
The invention discloses a manufacturing method of special-shaped mica parts. The method comprises the steps that natural dolomite powder or artificially-synthesized mica powder of different finesses is sufficiently mixed with short glass fibers to obtain ingredients, an inorganic binder is dissolved in purified water with the temperature being higher than 50 DEG C and stirred to obtain an inorganic binder aqueous solution, the ingredients and the aqueous solution are sufficiently mixed to obtain a mixture, the mixture is weighed according to the mass required for the mica parts and then loadedto an assembled mold, the mold is installed to a press machine, the press machine is started to apply pressure to the mold repeatedly and stepwise till the pressure meets the technical requirement, the pressure is maintained for a certain period of time, the press machine is subjected to pressure relief, the mold is taken out, an outer mold body is removed, an inner mold body is locked up and down and placed in a tunnel-type oven to be dried, heated, cured and annealed sequentially at a time according to different temperature regions, a locking bolt of the inner mold body is removed, the micaparts subjected to curing formation are placed in an oven of 45-55 DEG C, and after the mica parts meet the batch requirement, the internal stress is eliminated and then moistureproof treatment is carried out.
Description
technical field [0001] The invention relates to a method for manufacturing special-shaped mica parts, in particular to a method for manufacturing special-shaped mica parts whose working temperature reaches 500 degrees Celsius and 1000 degrees Celsius. Background technique [0002] The special-shaped mica parts made of mica as the base material have good compression resistance, flexural resistance, corrosion resistance, impact resistance and lightning protection, arc protection, high insulation, low temperature resistance (-60 ° C), and high temperature resistance of 250 ° C And other excellent performance, are widely used in aerospace, aviation, military industry, nuclear power, radar power transmission and distribution systems, lightning protection engineering and high-tech applications such as submarines, automobiles, shipbuilding, and ultra-high voltage transmission networks. With the rapid development of high-tech, its application fields will be more extensive. [0003]...
Claims
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IPC IPC(8): B28B3/02
CPCB28B3/02
Inventor 韦钧胡聪元
Owner 苏州苏绝电工材料股份有限公司