An ultrasonic device for powder compaction
A compression molding and ultrasonic technology, applied in material molding presses, molding indenters, ceramic molding machines, etc., can solve the problems of dense component materials, low energy, and low frequency, and achieve good mechanical properties and high product density. , the effect of large vibration energy
Active Publication Date: 2021-04-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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[0006] However, when the above-mentioned powder compacting device is working, due to the low energy generated by the membrane vibration, the frequency is small, and the transmission range is limited, it can only cause a slight movement of the material close to the membrane surface, which is not enough to make the entire component material dense, which will affect The mechanical properties of the product after compression molding; moreover, this effect is gone after pressing, which does not solve the problem of disordered powder arrangement during the pressing process
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "or / and" includes any and all combinations of one or more of the ass...
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The invention relates to an ultrasonic device for powder compaction, comprising a mold base, a die set on the die base, and a male die set opposite to the female die, the male die cooperates with the female die , and together form a chamber for powder compaction; it is characterized in that: at least one ultrasonic vibration generator is arranged in the mold base, and the vibration output part of the ultrasonic vibration generator is arranged facing the concave mold, wherein the At least one impactor is arranged between the concave mold and the vibration output part of the ultrasonic vibration generator, and the ultrasonic vibration generator can drive the impactor to impact the concave mold. The invention uses an ultrasonic vibration generator to drive the impactor to impact the concave mold, so that the vibration energy generated by the ultrasonic device on the powder material is large and the frequency is high, and the compactness of the product obtained after being pressed by the ultrasonic device is improved. high and has good mechanical properties.
Description
technical field [0001] The invention belongs to the technical field related to powder compaction, in particular to an ultrasonic device for powder compaction. Background technique [0002] Powder compression molding is used to make loose powder into semi-finished or finished products with predetermined geometry, size, density and strength. [0003] Among them, the ceramic powder molding technology uses zirconia powder, zirconia powder and molding agent as raw materials, and is manufactured through dry pressing and sintering processes. This process mainly produces light-weight, high-rigidity flat-shaped ceramics Products, high production efficiency, suitable for mass production, low cost, high material utilization rate, good shear resistance. [0004] At present, ceramics are pressed and formed, specifically, under the static pressure of the press and the mold, the powder is pressed into the desired shape under the pressure of 15-600 MPa. Due to the hard and brittle material...
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IPC IPC(8): B30B11/26B28B3/02B28B3/04
CPCB28B3/022B28B3/04
Inventor 赵夙翟锰钢张庆龙徐洪涛于磊周瑜婷
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI