Resonance rod, cavity filter and method for manufacturing resonance rod

A technology of cavity filter and manufacturing method, which is applied in the direction of resonators, waveguide devices, electrical components, etc., can solve the problems of one-time molding processing by cold heading process, etc., and achieve the effect of reducing material loss and improving processing efficiency

Inactive 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

However, the existing resonant rod materials cannot be processed by cold heading process because they need to meet the requirements of hardness and expansion coefficient.

Method used

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  • Resonance rod, cavity filter and method for manufacturing resonance rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the iron-nickel alloy powder that is 98% by weight, the carbonyl iron powder that is 1%, the carbonyl nickel powder that is 1% by weight and the iron-nickel alloy powder, carbonyl The lubricant of 1% of the total amount of iron powder, carbonyl nickel powder is batching, manufactures the blank of resonant rod, and this lubricant can be stearic acid lubricant, paraffin, polyvinyl alcohol, selects stearic acid lubrication in the present embodiment In this step, pure iron with an iron content > 99.95% and pure nickel with a nickel content > 99.96% are selected, and the alloy powder containing 36% Ni prepared by ultra-high pressure water atomization technology or steam atomization technology, After dehydration, drying, sieving, raw powder high-temperature reduction, powder cake crushing, sieving, batching and other processes to obtain 36% Ni high-purity iron-nickel alloy powder. Mechanically mix the high-purity iron-nickel alloy powder with carbonyl iron powde...

Embodiment 2

[0034]Embodiment 2: be 88% steam-atomized iron-nickel alloy powder by weight ratio, be the carbonyl iron powder of 6% by weight ratio, be the carbonyl nickel powder of 6% by weight ratio and be described iron-nickel alloy powder, carbonyl The stearic acid lubricant of 4% of the total amount of iron powder and carbonyl nickel powder is used as ingredients to manufacture the blank of the resonant rod. The sintering and heat treatment aging conditions of the blank are as follows: the sintering temperature is set at 1350°C, the sintering time is set at 3 hours, the annealing temperature is set at 1050°C, and the annealing time is set at 5 hours. For the steps of manufacturing the billet and the iron-nickel alloy bar in the embodiment of the present invention, reference may be made to the description in Embodiment 1, and details are not repeated here.

[0035] After testing, the impact toughness index of the iron-nickel alloy bar is 263.5J / cm 2 , the section shrinkage rate is 68%,...

Embodiment 3

[0037] Embodiment 3: be 93% water atomization iron-nickel alloy powder with weight ratio, the carbonyl iron powder that is 4% by weight ratio, the carbonyl nickel powder that is 3% by weight ratio and the described iron-nickel alloy powder, carbonyl The stearic acid lubricant of 2% of the total amount of iron powder and carbonyl nickel powder is used as ingredients to manufacture the blank of the resonant rod. The sintering and heat treatment aging conditions of the blank are as follows: the sintering temperature is set to 1450°C, the sintering time is set to 6 hours, the annealing temperature is set to 1100°C, and the annealing time is set to 8 hours. For the steps of manufacturing the billet and the iron-nickel alloy bar in the embodiment of the present invention, reference may be made to the description in Embodiment 1, and details are not repeated here.

[0038] After testing, the impact toughness index of the iron-nickel alloy bar is 317.6J / cm 2 , the reduction of area i...

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Abstract

The invention provides a method for manufacturing a resonance rod. The method comprises the steps of: manufacturing a resonance rod blank by using the following accessories in percentage by weight: 88%-98% of water atomization iron-nickel alloy powder, 1%-8% of iron carbonyl powder, 1%-8% of nickel carbonyl powder and lubricant in an amount which is 1%-4% of the total weight of iron-nickel alloy, carbonyl iron and nickel carbonyl; performing continuous sintering and follow-up heat treatment for a blank so as to manufacture an iron-nickel alloy bar by the blank; performing cold heading processing for the bar; and performing heat treatment for the resonance rod after cold heading forming. The resonance rod manufactured by the method has high expansion coefficients and drawing coefficients, and is suitable to be arranged in a cavity filter widely. The method solves the problems that the resonance rod in the prior art is low in processing efficiency and wastes a great quantity of materials, so that the resonance rod can be produced and processed in batches.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to a resonant rod and a manufacturing method thereof. 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] At present, numerical control machine tools (CNC) are used to cut the resonant rods in the manufacture of resonant rods, so the problem is that the waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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