Preparation method of surface coating of ceramic chopper, ceramic chopper and application of ceramic chopper
A technology of surface coating and riving knife, which is applied in the field of preparation of ceramic riving knife surface coating, can solve the problems of high price, difficulty in meeting the surface roughness requirements of ceramic riving knife, high packaging cost, etc.
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[0023] refer to figure 1 , an embodiment of the present invention provides a method for preparing a surface coating of a ceramic capillary, including the following steps S100 and S200.
[0024] Step S100: granulating the alumina powder to obtain coating particles, the median diameter of the alumina powder is 120nm-200nm. Alumina has the characteristics of high hardness and high wear resistance, and can be used as a coating material for ceramic riving knives to prepare ceramic riving knives with high wear resistance and long service life.
[0025] In some embodiments, in step S100, the granulation treatment is plasma granulation or spray granulation. Specifically, in the embodiment of the present invention, the granulation treatment adopts plasma granulation.
[0026] In some of the embodiments, before the step S100, the method further includes: grinding and drying the dried alumina powder to obtain alumina powder.
[0027] In some of the embodiments, the median particle dia...
Embodiment 1
[0051] The manufacture process of the ceramic riving knife of the present embodiment is specifically as follows:
[0052] (1) Take alumina powder with a median particle size of 150 nm, heat it at 150° C. for 3 hours, remove moisture, and obtain dry alumina powder.
[0053] (2) Weigh each raw material according to the mass ratio of alumina powder, alumina grinding ball and absolute ethanol as 1:1:2, add it into a nylon ball mill tank, and perform high-energy ball milling at a ball milling speed of 300r / min. The ball milling time is 48 Hours; the ball-milled slurry was dried at a constant temperature of 75° C. for 24 hours to obtain alumina powder.
[0054] (3) The alumina powder is granulated in a plasma device to obtain coated particles, and the particle size of the coated particles is 20 μm.
[0055] (4) Clean the semi-finished substrate of the alumina ceramic splitter and set it aside.
[0056] (5) Coating was prepared by plasma spraying with coating particles as the raw m...
Embodiment 2
[0058] The manufacture process of the ceramic riving knife of the present embodiment is specifically as follows:
[0059] (1) Take alumina powder with a median particle size of 150 nm, heat it at 150° C. for 3 hours, remove moisture, and obtain dry alumina powder.
[0060] (2) Weigh each raw material according to the mass ratio of alumina powder, alumina grinding ball and absolute ethanol as 1:1:2, add it into a nylon ball mill tank, and perform high-energy ball milling at a ball milling speed of 300r / min. The ball milling time is 48 Hours; the ball-milled slurry was dried at a constant temperature of 75° C. for 24 hours to obtain alumina powder.
[0061] (3) The alumina powder is granulated in a plasma device to obtain coated particles, and the particle size of the coated particles is 20 μm.
[0062] (4) Clean the semi-finished substrate of the alumina ceramic splitter and set it aside.
[0063] (5) Coating was prepared by plasma spraying with coating particles as the raw m...
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