Manufacturing method of resonant rod, resonant rod and cavity filter

A manufacturing method and technology of resonant rods, applied in the direction of resonators, waveguide devices, electrical components, etc., can solve the problems of limited application, coarse casting structure, high loss of raw materials, etc., to improve performance indicators and stability, reduce alloy composition deviation Accumulation, reduce the effect of raw material consumption

Active Publication Date: 2012-12-05
ANHUI TATFOOK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the research and practice of the prior art, the inventors of the present invention found that due to the complex shape and high precision requirements of the resonant rod in microwave radio frequency devices, the machining cost required to prepare the resonant rod from Invar ingot is expensive (high raw material loss) and limited production efficiency
In addition, Invar's manufacturing by melting and casting method has the defects of segregation of alloy components, coarse and uneven casting structure, which greatly increases the preparation cost of the resonator rod and limits its application in microwave resonators

Method used

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  • Manufacturing method of resonant rod, resonant rod and cavity filter
  • Manufacturing method of resonant rod, resonant rod and cavity filter
  • Manufacturing method of resonant rod, resonant rod and cavity filter

Examples

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Effect test

Embodiment 1

[0023] A method for manufacturing a resonant rod, the flow chart of which is as follows figure 1 shown, including:

[0024] Step S1, uniformly mechanically mixing 88%-98% iron-nickel alloy powder, 1%-8% carbonyl iron powder and 1%-8% carbonyl nickel powder by weight.

[0025] In the embodiment of the present invention, the weight ratio of the iron-nickel alloy powder is preferably 92-96%, the weight ratio of the carbonyl iron powder is preferably 2-4%, and the weight ratio of the carbonyl nickel powder is preferably 2-4%. Most preferably, the weight ratio of the iron-nickel alloy powder is 94%, the weight ratio of the carbonyl iron powder is 3%, and the weight ratio of the carbonyl nickel powder is 3%. It should be noted that the raw materials inevitably contain a small proportion of impurities such as carbon, nitrogen, sulfur and phosphorus, and generally the proportion of impurities is not more than 0.1%.

[0026] In the embodiment of the present invention, the iron-nickel...

Embodiment 2

[0048] A kind of resonant bar 10, its structural schematic diagram is as figure 2 As shown, the height of the resonant rod is H, and the outer diameter is D. The resonant rod 10 includes iron-nickel alloy with a weight ratio of 88%-98%, carbonyl iron with a weight ratio of 1%-8%, and carbonyl nickel with a weight ratio of 1%-8%, and the iron-nickel alloy, carbonyl iron and Nickel carbonyl is pressed or injection molded into resonant rods.

[0049] Using the iron-nickel alloy, carbonyl iron and carbonyl nickel in the above ratio, the resonant rod is made by one-time molding process, which greatly reduces the loss of raw materials and saves the cost of machining

[0050] In the embodiment of the present invention, the weight ratio of iron-nickel alloy is preferably 92-96%, the weight ratio of iron carbonyl is preferably 2-4%, and the weight ratio of nickel carbonyl is preferably 2-4%. Most preferably, the weight ratio of iron-nickel alloy is 94%, the weight ratio of iron carb...

Embodiment 3

[0055] A resonant rod, which contains iron-nickel alloy with a weight ratio of 88%-98%, carbonyl iron with a weight ratio of 1%-8%, and carbonyl nickel with a weight ratio of 1%-8%, and the iron-nickel alloy, carbonyl iron It is uniformly mixed with nickel carbonyl in powder form and formed into a resonant rod.

[0056] In the embodiment of the present invention, the high-performance iron-nickel alloy microwave resonator rod is prepared by using uniformly mixed powder with iron-nickel alloy powder as the main body to form a resonator rod, which can minimize the segregation of alloy components and eliminate coarse and uneven Microstructural defects, thereby improving the performance index and stability of the corresponding products.

[0057] In a further embodiment of the present invention, the weight ratio of iron-nickel alloy is 92%-96%, the weight ratio of carbonyl iron is 2%-4%, and the weight ratio of carbonyl nickel is 2%-4%. The iron-nickel alloy contains 36% of nickel ...

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Abstract

The embodiment of the invention discloses a manufacturing method of a resonant rod. The manufacturing method of the resonant rod comprises the following steps of: mechanically and uniformly mixing the following materials in percentage by weight: 88%-98% of iron-nickel alloy powder, 1%-8% of iron carbonyl powder and 1%-8% of nickel carbonyl powder; carrying out forming treatment on the uniformly mixed powder to form a resonant rod blank; and carrying out continuous sintering and annealing heat treatment on the resonant rod blank. The embodiment of the invention also provides the resonant rod and a cavity filter. The manufacturing method of the resonant rod, which is disclosed by the embodiment of the invention, is greatly increased in production efficiency and reduced in raw material loss to a great degree; and the resonant rod disclosed by the embodiment of the invention furthest reduces the alloy component clustering and overcomes the defects of thick and nonuniform microscopic structures, thereby enhancing the performance index and the stability of corresponding products.

Description

technical field [0001] The embodiments of the present invention relate to the field of microwave communication, in particular to a resonant rod and a manufacturing method thereof, and also to a cavity filter using the resonant rod. Background technique [0002] As a passive filter, the cavity filter has good anti-interference performance and a wide range of applications, and is widely used in the field of mobile communications. The cavity filter includes a cavity body and a cover plate. There are multiple cavities on the cavity body, and each cavity accommodates a resonant rod, so multiple resonant rods are used in one cavity filter. [0003] The resonant rod plays an irreplaceable role in the cavity filter. The resonant rod is a key component that affects the performance of the cavity filter. Therefore, there are strict requirements on the processing and manufacturing of the resonant rod. [0004] In the prior art, Invar is usually used as the raw material for the preparat...

Claims

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Application Information

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IPC IPC(8): H01P7/00H01P1/207H01P11/00
Inventor 赵可沦申风平万冰冰
Owner ANHUI TATFOOK TECH CO LTD
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