WO2011150854A9 - 谐振杆制造方法、谐振杆及腔体滤波器 - Google Patents
谐振杆制造方法、谐振杆及腔体滤波器 Download PDFInfo
- Publication number
- WO2011150854A9 WO2011150854A9 PCT/CN2011/075128 CN2011075128W WO2011150854A9 WO 2011150854 A9 WO2011150854 A9 WO 2011150854A9 CN 2011075128 W CN2011075128 W CN 2011075128W WO 2011150854 A9 WO2011150854 A9 WO 2011150854A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iron
- powder
- resonant rod
- nickel
- manufacturing
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/008—Manufacturing resonators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
- H01P11/002—Manufacturing hollow waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Definitions
- Resonance rod manufacturing method Resonant rod and cavity filter
- Embodiments of the present invention relate to the field of microwave communications, and in particular, to a resonant rod and a method of fabricating the same, and to a cavity filter using the resonant rod.
- the cavity filter As a kind of passive filter, the cavity filter has good anti-interference and wide adaptability, and is widely used in the field of mobile communication.
- the cavity filter includes a cavity and a cover plate, and the cavity has a plurality of cavities, each of which accommodates a resonant rod, so that a plurality of resonant rods are used in one cavity filter.
- the resonant rod in the cavity filter has an irreplaceable role.
- the resonant rod is a key component that affects the performance of the cavity filter. Therefore, there are strict requirements for the processing and manufacturing of the resonant rod.
- invar rod resonator a special Invar iron-nickel metal alloy material, a very small coefficient of thermal expansion (less than 10- 6 / ° C in average coefficient of thermal expansion around room temperature And it has good plasticity.
- invar is traditionally manufactured by fusion casting.
- the inventors of the present invention have found that the mechanical processing cost required to prepare a resonant rod by using Invar ingot is expensive due to the complicated shape of the resonant rod in the microwave radio frequency device and the high precision requirement. (high raw material loss) and limited production efficiency.
- Invar smelting has the defects of alloy composition segregation, coarse and uneven casting structure, which greatly increases the preparation cost of the resonant rod and limits its application in microwave resonators.
- the traditional cold heading process is mainly used to make parts such as bolts, nuts, nails, rivets and steel balls.
- the forging material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, and the material utilization rate can reach 80 ⁇ 90%.
- the existing resonant rod material has to meet the requirements of hardness and expansion coefficient, so it cannot be processed by a cold heading process.
- an embodiment of the present invention provides a resonant rod manufacturing method, the resonant rod Manufacturing methods include:
- the iron-nickel alloy powder having a weight ratio of 88% to 98%, the iron-based iron powder having a weight ratio of 1% to 8%, and the nickel carbonyl powder having a weight ratio of 1% to 8% are mechanically uniformly mixed;
- the mixed powder after the hooking is subjected to a molding process to form a resonant rod blank
- the resonant rod blank is subjected to continuous sintering and annealing heat treatment.
- an embodiment of the present invention further provides a resonant rod comprising an iron-nickel alloy having a weight ratio of 88% to 98%, a weight ratio of 1% to 8%, and a weight ratio. It is 1% ⁇ 8% of the base nickel.
- Embodiments of the present invention also provide a cavity filter including the above-described resonant rod.
- the embodiment of the present invention further provides a method for manufacturing a resonant rod, comprising: an iron-nickel alloy with a weight ratio of 88% to 98%, a weight ratio of 1% to 8%, a weight of iron, weight a resonance rod blank made of 1% to 8% of a base of nickel and a lubricant having a weight ratio of 1% to 4% of the total amount of the iron-nickel alloy, the rebel iron, and the repellent nickel; Perform cold heading processing;
- the cold-rolled resonant rod is heat treated.
- an embodiment of the present invention further provides a method for manufacturing a resonant rod, comprising: placing a metal powder in a molding die;
- the metal resonance rod formed by pressing is demolded and sintered.
- the utility model has the beneficial effects that: the resonance rod provided by the embodiment of the invention and the manufacturing method thereof are different from the prior art, the iron-nickel alloy powder prepared by the powder metallurgy technology is pressed or injection-molded, and the performance is excellent by the heat treatment process.
- Iron-nickel alloy microwave resonant rod Compared with the traditional casting method, the alloy composition can be minimized, and the microstructure defects of the coarse and uneven hooks can be eliminated, thereby improving the performance index and stability of the corresponding products. At the same time, it is also a kind of less cutting-free process, which can realize the net near forming and automatic mass production of the resonant rod, thereby effectively reducing the consumption of raw materials.
- the resonant rod manufacturing method provided by the embodiment of the invention can manufacture a resonant rod whose hardness, expansion coefficient and toughness meet the requirements, and the method of cold heading processing reduces the loss of materials and improves the processing efficiency.
- FIG. 1 is a schematic flow chart of a method of manufacturing a resonant rod according to an embodiment of the present invention
- FIG. 2 is a schematic structural view of a resonant rod according to another embodiment of the present invention.
- Figure 3 is a photomicrograph of the microstructure of the resonant rod shown in Figure 2;
- FIG. 4 is a schematic flow chart of a method for manufacturing a resonant rod according to still another embodiment of the present invention
- FIG. 5 is a schematic flow chart of a method for manufacturing a resonant rod according to still another embodiment of the present invention
- FIG. 6 is a schematic diagram of a method for manufacturing a resonant rod according to still another embodiment of the present invention
- the embodiment of the present invention provides a method for manufacturing a resonant rod.
- the method for manufacturing the resonant rod includes: the iron-nickel alloy powder having a weight ratio of 88% to 98%, and a weight-respecting iron powder of 1% to 8%;
- the recalcitrant nickel powder having a weight ratio of 1% to 8% is mechanically uniformly mixed; the uniformly mixed powder is subjected to molding treatment to be formed into a resonance rod blank; and the resonance rod blank is subjected to continuous sintering and annealing heat treatment.
- the embodiment of the invention further provides a resonant rod comprising an iron-nickel alloy in a weight ratio of 88% to 98%, a carbonyl iron in a weight ratio of 1% to 8%, and a weight ratio of 1% to 8%.
- Nickel carbonyl in a weight ratio of 88% to 98%, a carbonyl iron in a weight ratio of 1% to 8%, and a weight ratio of 1% to 8%.
- Embodiments of the present invention also provide a cavity filter including the above-described resonant rod.
- the embodiment of the invention further provides a method for manufacturing a resonant rod, comprising: an iron-nickel alloy with a weight ratio of 88% to 98%, a weight ratio of 1% to 8%, and a weight ratio of 1% to 8
- Responsive rod blank is made of % nickel carbonyl and a lubricant having a weight ratio of 1% to 4% of the total amount of the iron-nickel alloy, ruthenium iron, and mercapto nickel; the billet is continuously sintered and annealed and heat-treated An iron-nickel alloy rod; the rod is subjected to cold heading; and the cold-rolled resonant rod is heat-treated.
- An embodiment of the present invention further provides a method for manufacturing a resonant rod, comprising: placing a metal powder in a molding die; pressing a metal powder in the molding die by a press to form a metal resonant rod; and forming a metal resonant rod by pressing Demolding and sintering treatment.
- a method for manufacturing a resonant rod the flow chart of which is shown in FIG. 1 and includes:
- step S1 the iron-nickel alloy powder with a weight ratio of 88% to 98%, the iron-based iron powder with a weight ratio of 1% to 8%, and the repellent nickel powder with a weight ratio of 1% to 8% are mechanically and uniformly mixed.
- the weight ratio of the iron-nickel alloy powder is preferably 92 to 96%
- the weight ratio of the carbonyl iron powder is preferably 2-4%
- the weight ratio of the nickel-based nickel powder is preferably 2-4%.
- the weight ratio of the iron-nickel alloy powder is 94%
- the weight ratio of the iron-based iron powder is 3%
- the weight ratio of the nickel-based nickel powder is 3%.
- the iron-nickel alloy powder, the carbonyl iron powder, the nickel carbonyl powder, and the stearic acid lubricant in the weight ratio of 1% to 4% by weight of the iron-nickel alloy powder are mechanically and uniformly mixed by a mechanical ball milling mixing process.
- the mechanical ball milling mixing process can use a zirconia ball as a ball milling medium, the ball to material ratio can be set to 10:1, and the ball milling time range is 5-12 hours.
- the above ball ratio and ball milling time can be adjusted according to actual needs.
- the steps for preparing the iron-nickel alloy powder are described below:
- pure iron and pure nickel are selected, and an alloy powder containing 36% by weight of nickel and 64% by weight of iron is prepared by ultra-high pressure water atomization or gas atomization technology, and then dehydrated, dried, sieved.
- the high-purity iron-nickel alloy powder of 36% Ni-64% Fe is obtained by the steps of high-temperature reduction of raw powder, powder crushing, sieving, batching, etc., and the alloy powder is in the form of spherical or agglomerated particles.
- the purity of pure iron is preferably greater than 99.95%
- the purity of pure nickel is preferably greater than 99.6%.
- the stearic acid lubricant can exert a good internal lubrication effect on the alloy powder to reduce the friction between the powders.
- the stearic acid lubricant comprises from 1% to 4%, most preferably 2% by weight of the iron-nickel alloy powder.
- the above nickel carbonyl powder and carbonyl iron powder are high-purity powder particles having a unique crystal structure and a very low carbon content, which can be an ideal composite material mixed with an iron-nickel alloy powder, and their dendritic surfaces enable them to Closely combined with large particles, a stable and uniform distribution is formed before the powder is sintered, and it can be diffused with other powders in the subsequent sintering process, and finally a precision component with a balanced metallurgical structure can be formed to ensure thermal expansion of the resonant rod product.
- the coefficient plays an important role.
- step S2 the mixed powders which have been uniformly mixed are subjected to a molding process to be molded into a resonance rod blank.
- the mixed powder is placed in a molding die, press-molded at a pressure of, for example, a 100-ton hydraulic press, and then demolded to obtain a once-formed iron-nickel alloy resonance rod blank.
- the mixed powder is placed in a high pressure injection molding machine for one injection molding, and a once formed iron-nickel alloy resonance rod blank is also obtained.
- the forming press can be manually fed according to the actual situation, or can be automatically fed.
- step S3 the resonant rod blank is subjected to continuous sintering and annealing heat treatment.
- the maximum sintering temperature range for continuous sintering of the resonant rod blank is 1250-1550 ° C, and the sintering time is 3-10 hours; in the annealing heat treatment, hydrogen is used as the reducing gas, and the annealing temperature range is 1050- At 1250 ° C, the annealing time is 5-12 hours. After that, it can be made not only very High density, and no need for subsequent machining of iron-nickel alloy resonant rods.
- the preferred maximum sintering temperature range is 1350-1450 V
- the sintering time is 3-6 hours
- the annealing temperature range is 1100-1200 V
- the annealing time is 5-8 hours.
- the most preferred maximum sintering temperature is 1400 ° C
- the sintering time is 4 hours
- the annealing temperature is 1150 ° C
- the annealing time is 6 hours.
- the stearic acid lubricant described above has been vaporized at a high temperature after the above-described steps of primary molding and continuous sintering, and the stearic acid lubricant component is substantially absent in the iron-nickel alloy resonance rod.
- the heat-treated iron-nickel alloy resonance rod is plated, first plated with copper, and then silver plated.
- the plated one-shot iron-nickel alloy resonant rod can be directly mounted in the cavity filter.
- the high-purity iron-nickel alloy powder prepared by the ultra-high pressure atomization technology is used as the main-purpose mixed-powder powder to form a resonant rod at a time, and a reasonable sintering and annealing heat treatment process is used to prepare a high net shape.
- Performance iron-nickel alloy microwave resonant rod which minimizes the segregation of alloy composition and eliminates the microstructure defects of coarse and uneven hooks, thereby improving the performance index and stability of the corresponding products, greatly improving product quality and production efficiency. To a lesser extent, raw material losses are reduced, saving the cost of machining.
- the molding size of the once-formed iron-nickel alloy resonant rod is in good agreement with the material properties, it can be directly used for debugging in a microwave resonator.
- Application example 1 88% high-purity iron-nickel alloy powder prepared by powder metallurgy technology, 6% carbonyl iron powder, 6% of ruthenium-based nickel powder and 1-2% of the total powder amount of stearic acid powder lubrication Agent, once pressed, after continuous sintering (maximum sintering temperature is 1450 ° C, sintering time is 10 hours) and reducing atmosphere (H2) annealing heat treatment process (annealing temperature is 1150 ° C, annealing time is 12 hours), after plating An iron-nickel alloy resonance rod having an outer diameter of 10.0 mm and a height of 11.8 mm was obtained. The test results show that the single-chamber resonance frequency reaches 2900MHz and the temperature drift is less than 0.32MHz.
- a resonant rod 10 is shown in FIG. 2, and the resonant rod has a height H and an outer diameter D.
- the resonant rod 10 includes an iron-nickel alloy having a weight ratio of 88% to 98%, a ruthenium iron having a weight ratio of 1% to 8%, and a nickel carbonyl having a weight ratio of 1% to 8%.
- the iron-nickel alloy, the ruthenium iron and the nickel carbonyl are pressed or injection molded into a resonance Rod.
- the resonance rod made by the above-mentioned ratio of iron-nickel alloy, carbonyl iron and nickel carbonyl nickel by one molding process greatly reduces the loss of raw materials and saves the cost of machining.
- the weight ratio of the iron-nickel alloy is preferably 92 to 96%, the weight ratio of the iron-based iron is preferably 2-4%, and the weight ratio of the nickel-based nickel is preferably 2-4%. Most preferably, the weight ratio of the iron-nickel alloy is 94%, the weight ratio of the iron-based iron is 3%, and the weight ratio of the nickel carbonyl is 3%.
- the iron-nickel alloy, the carbonyl iron and the nickel carbonyl are uniformly mixed in a powder form to form a resonant rod.
- the powder of the iron-nickel alloy is spherical or agglomerated particles.
- the crystal size of the resonant rod is less than 50 microns on average, and the grain distribution is densely densified, thus ensuring the test performance of the corresponding microwave resonant rod.
- FIG. 3 shows a micrograph of the microstructure of the resonant rod shown in FIG. 1, that is, a metallographic diagram.
- the iron-nickel alloy contains 36% by weight of nickel and 64% by weight of iron, and the powder of the iron-nickel alloy is prepared by ultra-high pressure water atomization or gas atomization.
- a high-purity iron-nickel alloy microwave resonator with a high-purity iron-nickel alloy powder prepared by an ultra-high pressure atomization technique is used to form a resonant rod with a single-shot mixed powder, thereby preparing a net-like high-performance iron-nickel alloy microwave resonant rod. Minimize the segregation of alloy components, eliminate coarse and uneven microstructure defects, and improve the performance index and stability of the corresponding products.
- a resonant rod comprising an iron-nickel alloy in a weight ratio of 88% to 98%, a carbonyl iron in a weight ratio of 1% to 8%, and a nickel carbonyl in a weight ratio of 1% to 8%, and an iron-nickel alloy or a carbonyl iron And nickel carbonyl is uniformly mixed in a powder form to form a resonance rod.
- a high-performance iron-nickel alloy microwave resonant rod prepared by uniformly mixing a powder-formed resonant rod mainly composed of iron-nickel alloy powder is used to minimize the segregation of the alloy composition, eliminate coarse and uneven The microstructure defects of the hooks improve the performance index and stability of the corresponding products.
- the weight ratio of the iron-nickel alloy is 92% to 96%
- the weight ratio of the carbonyl iron is 2% to 4%
- the weight ratio of the nickel-based nickel is 2% to 4%.
- Iron-nickel alloy with weight ratio 36% nickel and 64% by weight of iron, and the iron-nickel alloy powder is prepared by ultra-high pressure water atomization or gas atomization technology, which is spherical or agglomerated particles.
- the resonant rod has an average grain size of less than 50 microns and the grain distribution is dense.
- a cavity filter includes the above resonant rod.
- the invention also provides another method for manufacturing the resonant rod, as shown in FIG. 4, comprising: Step S1: an iron-nickel alloy with a weight ratio of 88% to 98%, and a weight ratio of 1% to 8% Resonant rod blank made of carbonyl iron, nickel carbonyl with a weight ratio of 1% to 8%, and a lubricant having a weight ratio of 1% to 4% of the total amount of the iron-nickel alloy powder, the iron-based iron powder, and the repellent nickel powder .
- the iron-nickel alloy described in this step is prepared by using ultra-high pressure water atomization or gas atomization technology with pure iron having a purity greater than 99.95% and pure nickel having a purity greater than 99.96%, and finally forming iron-nickel of fine particles.
- the alloy powder is subjected to a process of dehydration, drying, fractionation, high-temperature reduction of powder, powder crushing, fractionation, batching and the like to obtain a 36% Ni high-purity iron-nickel alloy powder.
- the high-purity iron-nickel alloy powder is mechanically mixed with powdered carbonyl iron, nickel carbonyl and a lubricant, and the lubricant in the invention is mainly used for promoting the mixing of the above various metal powders and alloy powders.
- the lubricant can be selected from stearic acid lubricant, paraffin wax, polyvinyl alcohol and other lubricants with the same effect.
- the uniformly mixed powder is placed in a molding die, and pressed by a hydraulic press under heavy pressure. Forming, the pressure of the heavy pressure should not be less than the gravity generated by 100 tons of material, and then demolded to obtain an iron-nickel alloy blank of a resonant rod.
- Step S2 The billet is subjected to sintering and annealing heat treatment to form an iron-nickel alloy rod.
- Step S3 The bar is subjected to cold rolling processing to make the resonant rod cold-formed.
- the iron-nickel alloy rod is subjected to cold heading processing.
- a cold heading die is prepared, and the equipment parameters of the cold heading machine are set in combination with the mold of the product, and then the iron-nickel alloy rod is put into the rod, and the alloy rod is pressed according to the specification of the resonant rod.
- Cutting, hoe, Accumulation, forming, chamfering, twisting, shrinking, trimming, and then cold or cold extrusion complete the formation of the resonant rod, and perform the cutting without cutting or cutting for the once formed resonant rod.
- Step S4 heat-treating the cold-rolled resonant rod.
- the step of heat-treating the cold-formed product is not taken.
- heat treatment of the formed resonant rod can obtain high density and high gloss.
- Resonant rod without subsequent machining.
- the resonant rod is electroplated, and copper is first plated on the surface of the resonant rod, and then the resonant rod is plated with silver.
- the plated resonant rod has good surface smoothness to avoid energy absorption and interference from the rough surface to the microwave.
- Application Example 2 water atomized iron-nickel alloy powder in a weight ratio of 98%, carbonyl iron powder in a weight ratio of 1%, nickel carbonyl powder in a weight ratio of 1%, and a weight ratio of the iron-nickel alloy powder, carbonyl group
- a lubricant of 1% of the total amount of iron powder and ruthenium nickel powder is a compound, and a billet of a resonance rod is prepared.
- the lubricant may be a stearic acid lubricant, a paraffin wax or a polyvinyl alcohol. In the present embodiment, stearic acid is used.
- Lubricant in this step, pure iron containing >99.95% iron and pure nickel containing >99.96% nickel, alloy powder containing 36% Ni prepared by ultra-high pressure water atomization technology or vapor atomization technology Then, a high-purity iron-nickel alloy powder of 36% Ni is obtained by dehydration, drying, sieving, high-temperature reduction of powder, powder crushing, sieving, batching and the like.
- the high-purity iron-nickel alloy powder is mechanically mixed with the rebel iron powder, the nickel carbonyl powder and the stearic acid lubricant to be uniformly refined, and then the uniformly mixed powder is placed in a molding die, and the molding pressure of the hydraulic press is not less than 100 tons. The next press molding is carried out, and then demolded to obtain an iron-nickel alloy blank of a resonant rod.
- the billet is sintered and heat-treated to form an iron-nickel alloy rod.
- the sintering temperature for sintering the billet is set to 1350 ⁇ 1550 ° C, the sintering time is 3 ⁇ 10 hours; after the sintering is completed, H 2 Annealing as a reducing gas, the annealing temperature is set to 1050 ⁇ 1250 ° C, and the annealing time is 5 ⁇ 12 hours.
- the sintering temperature of the billet was set to 1550 ° C
- the sintering time was set to 10 hours
- the annealing temperature was set to 1250 ° C
- the annealing time was set to 12 hours. Finish the processing of iron-nickel alloy rods.
- the iron-nickel alloy bar impact toughness index was 227.2 J / cm 2, the reduction of area of 74%, the expansion coefficient of 4.0 ⁇ 10- 6 / ⁇ .
- the iron-nickel alloy rod is subjected to cold heading.
- a cold heading die is prepared, and the equipment parameters of the cold heading machine are set in combination with the mold of the product, and then the iron-nickel alloy rod is put into the iron rod according to the specifications of the resonant rod.
- Cutting, boring, accumulating, forming, chamfering, boring, shrinking, trimming, and then cold or cold extrusion complete the formation of the resonant rod, and perform no cutting or less cutting on the once formed resonant rod. Finishing.
- the cold-rolled resonant rod is heat treated.
- the step of heat-treating the cold-formed product is not taken.
- heat treatment of the formed resonant rod can obtain high density and high gloss. Resonant rod without subsequent machining.
- the resonant rod is plated.
- copper is first plated on the surface of the resonant rod, and then the resonant rod is plated with silver.
- the resonator rod manufactured by the method of the present embodiment was mainly composed of an iron-nickel alloy having a weight ratio of 98%, a ruthenium iron having a weight ratio of 1%, and carbonyl nickel having a weight ratio of 1%.
- the resonant rod was mounted on a cavity filter and tested to achieve a single cavity resonant frequency of 3500 MHz with a temperature drift of less than 0.4 MHz.
- Application Example 3 a vapor atomized iron-nickel alloy powder having a weight ratio of 88%, a carbonyl iron powder having a weight ratio of 6%, a nickel carbonyl powder having a weight ratio of 6%, and a weight ratio of the iron-nickel alloy powder and a carbonyl group
- a 4% stearic acid lubricant of the total amount of iron powder and ruthenium nickel powder is used as a raw material to manufacture a billet of a resonant rod.
- the sintering and heat treatment aging conditions of the billet were as follows: the sintering temperature was set to 1350 ° C, the sintering time was set to 3 hours, the annealing temperature was set to 1050 ° C, and the annealing time was set to 5 hours.
- the steps of manufacturing the blank and the manufacturing of the iron-nickel alloy rod of the embodiment of the present invention can be referred to the description of Embodiment 1, and will not be described herein.
- the iron-nickel alloy bar After testing, the iron-nickel alloy bar has an impact toughness index of 263.5 J/cm2, a section shrinkage of 68%, and a coefficient of expansion of 2.7 ⁇ 10-6/ ⁇ .
- the resonant rod of this embodiment was mounted on a cavity filter and tested to have a single cavity resonant frequency of 3500 MHz and a temperature drift of less than 0.3 MHz.
- Application Example 4 water atomized iron-nickel alloy powder in a weight ratio of 93%, carbonyl iron powder in a weight ratio of 4%, nickel carbonyl powder in a weight ratio of 3%, and weight ratio of the iron-nickel alloy powder, carbonyl group Iron A 2% stearic acid lubricant of the total amount of powder and ruthenium nickel powder is used as a raw material to manufacture a billet of a resonant rod.
- the sintering and heat treatment aging conditions of the billet were as follows: the sintering temperature was set to 1450 ° C, the sintering time was set to 6 hours, the annealing temperature was set to 1100 ° C, and the annealing time was set to 8 hours.
- the steps of manufacturing the blank and the iron-nickel alloy rod of the embodiment of the present invention reference may be made to the description of Embodiment 1, and details are not described herein again.
- the iron-nickel alloy bar After testing, the iron-nickel alloy bar has an impact toughness index of 317.6 J/cm2, a section shrinkage of 62%, and a hardness of 1.8 ⁇ 10-6/ ⁇ .
- the resonant rod of this embodiment was mounted on a cavity filter and tested to achieve a single cavity resonant frequency of 3500 MHz and a temperature drift of less than 0.2 MHz.
- Embodiment 6 A method for manufacturing a resonant rod, the flow chart shown in FIG. 5, comprising:
- the metal powder is pre-formulated, and the metal powder prepared by the metal powder may be mixed by one or more metals and one or more auxiliary materials, and the auxiliary material is added to facilitate the formation of the resonance tube. It is of course also possible to use a pure metal powder without the addition of an auxiliary material, and the composition of the specific metal powder does not constitute a limitation of the present invention.
- An example of the metal powder is an iron-nickel alloy containing 88% to 98% by weight, a ruthenium iron having a weight ratio of 1% to 8%, a nickel carbonyl having a weight ratio of 1% to 8%, and a weight.
- the ratio is 1% to 4% of the total amount of the iron-nickel alloy, the ruthenium iron, and the repellent nickel.
- the details of the iron-nickel alloy, carbonyl iron, mercapto nickel, and lubricant are the same as those described above, and will not be repeated here.
- the metal powder in the forming mold is pressed by a press to form a metal resonant rod; the process of forming the resonant rod requires the cooperation of the mold, and the molds of different shapes and sizes are designed, and the resonant rods of different specifications can be produced. It is not intended to limit the invention.
- Press-formed resonant rods need to be sintered to make them strong and meet the requirements of use.
- the metal resonant rod is press-formed by a press machine, which saves the cost of the raw material compared with the existing CNC processing method, and does not generate waste materials, and can be pressed once by the pressing tool due to the change of the processing method. Multiple resonant rods greatly increase production efficiency.
- Embodiment 7 A method for manufacturing a resonant rod, the flow chart shown in FIG. 6 includes:
- the process of preparing the metal powder may be: mixing the metal powder and the auxiliary material to form a mixed metal powder having a certain viscosity; the specific metal powder and the kind and ratio of the auxiliary material do not constitute a limitation of the present invention.
- the auxiliary material may include: one or several of a lubricant, a graphite powder, and a binder, and the composition of the metal powder may be one or more of iron powder, copper powder, and steel powder.
- a lubricant for the choice of specific iron powder, you can choose to reduce iron powder or atomized iron powder.
- the coefficient of linear expansion of the resonant rod can be changed, thereby achieving the purpose of controllable temperature drift.
- the specific press may select a hydraulic press or a pneumatic press dedicated to powder compaction.
- the specific pressure selection and equipment selection are dependent on the size of the resonant rod produced and the ingredients, and do not constitute a limitation of the present invention.
- the sintering temperature of the integrated rod after the integral molding is 800 to 1200 ° C
- the specific sintering temperature is related to the composition of the resonant rod, and does not constitute a limitation of the present invention.
- Press-formed resonant rods need to be sintered to make them strong and meet the requirements of use.
- precision machining is performed to achieve the specified dimensional tolerance requirements as well as flatness, surface roughness, surface finish, and the like.
- precision machining There may be various processing processes for precision machining.
- the resonant rod may be shaped or reamed.
- it may be implemented by other conventional precision machining processes in the art, and the specific implementation does not constitute the present invention. limit. B6, plating treatment of the metal resonant rod.
- the purpose of the electroplating is to make the surface of the resonant rod smooth and smooth, and optimize the index parameters of the filter.
- the specific electroplating process may include: firstly plating the metal resonant rod, and then on the surface of the metal resonant rod after the copper plating silver.
- plating methods Different plating methods and plating materials can be obtained based on different specifications and parameters of the product.
- the method further comprises: immersing the precision-processed metal resonant rod with an organic solution for sealing treatment. Because the pressed resonant rod is made of metal powder or fine metal particles, the texture structure has a certain looseness. Under the microscope, the texture and arrangement between the internal metal powder/metal particles of the suppression resonant rod can be clearly seen. Therefore, by sealing the hole, the subsequent plating process can be made smoother.
- the adjustment of the filter parameters related to the resonant rod can be realized by adjusting the material of the resonant rod or the proportion of the metal powder therein; Moreover, by adjusting the material of the resonant rod or the proportion of the metal powder therein, the linear expansion coefficient of the resonant rod can also be adjusted, thereby achieving the purpose of controlling the temperature drift.
- the integrated resonant rod manufactured by the method of the invention is a novel product, the raw material cost is low, the forming speed is fast, the dimensional consistency is good, the general molding pressing time is only about 3 seconds, and the smaller equipment can be produced in one minute. With more than 10 resonant rods, the production efficiency is significantly improved.
- the foregoing storage medium includes: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, and the program code can be stored. Medium.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/701,511 US9196947B2 (en) | 2010-06-02 | 2011-06-01 | Method for manufacturing resonant tube, resonant tube and cavity filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010189285.X | 2010-06-02 | ||
CN201010189285XA CN101912967B (zh) | 2010-06-02 | 2010-06-02 | 谐振管制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011150854A1 WO2011150854A1 (zh) | 2011-12-08 |
WO2011150854A9 true WO2011150854A9 (zh) | 2013-05-16 |
Family
ID=43320686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/075128 WO2011150854A1 (zh) | 2010-06-02 | 2011-06-01 | 谐振杆制造方法、谐振杆及腔体滤波器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9196947B2 (zh) |
CN (1) | CN101912967B (zh) |
WO (1) | WO2011150854A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101912967B (zh) * | 2010-06-02 | 2013-03-13 | 深圳市大富科技股份有限公司 | 谐振管制造方法 |
CN102214852B (zh) * | 2011-03-16 | 2014-06-04 | 华为技术有限公司 | 制造谐振管的方法、谐振管和滤波器 |
CN102145977B (zh) | 2011-03-16 | 2013-09-11 | 华为技术有限公司 | 粉末材料、制造通信设备的方法以及通信设备 |
CN102810716B (zh) * | 2011-06-01 | 2015-03-18 | 深圳市大富科技股份有限公司 | 谐振杆制造方法、谐振杆及腔体滤波器 |
CN102569976B (zh) * | 2012-03-13 | 2014-12-03 | 华为技术有限公司 | 一种谐振管及其制造方法、腔体滤波器 |
CN105562698B (zh) * | 2014-10-17 | 2018-09-04 | 东睦新材料集团股份有限公司 | 一种粉末冶金铬合金燃料电池连接件的封孔方法 |
CN105870570A (zh) * | 2016-04-01 | 2016-08-17 | 苏州欣天新精密机械有限公司 | 一种复合材料谐振柱的制备方法 |
AU2023221382A1 (en) * | 2022-02-15 | 2024-08-29 | Massachusetts Institute Of Technology | Degassing of nano-phase separating powders in a hydrogen containing atmosphere |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5401292A (en) * | 1992-08-03 | 1995-03-28 | Isp Investments Inc. | Carbonyl iron power premix composition |
US7017351B2 (en) * | 2002-11-21 | 2006-03-28 | Mems Optical, Inc. | Miniature thermoacoustic cooler |
CN100455179C (zh) * | 2006-05-26 | 2009-01-21 | 中国科学院理化技术研究所 | 包覆型复合碳基电磁屏蔽材料及其制备方法和用途 |
KR20090029622A (ko) * | 2007-09-18 | 2009-03-23 | 이성형 | 공조기용 냉매 분배관의 제조방법 및 그 방법에 의해제조된 냉매 분배관 |
CN201185223Y (zh) * | 2008-04-25 | 2009-01-21 | 武汉凡谷电子技术股份有限公司 | 带翻边的拉制谐振杆 |
CN101396789A (zh) * | 2008-11-14 | 2009-04-01 | 扬州市天禾粉末冶金工业有限公司 | 一种球阀阀芯的生产工艺 |
CN101525711B (zh) * | 2009-04-22 | 2010-09-15 | 东南大学 | 电镀锌、镍复合镀层镁合金及其电镀方法 |
CN201417811Y (zh) * | 2009-06-10 | 2010-03-03 | 大富(深圳)科技有限公司 | 谐振管及使用该谐振管的腔体滤波器 |
CN101644264B (zh) * | 2009-08-11 | 2011-10-05 | 宁波市群星粉末冶金有限公司 | 空气压缩机动盘的制作方法 |
CN101656341B (zh) * | 2009-10-10 | 2012-10-17 | 深圳市大富科技股份有限公司 | 谐振管 |
CN101912967B (zh) * | 2010-06-02 | 2013-03-13 | 深圳市大富科技股份有限公司 | 谐振管制造方法 |
CN102145977B (zh) * | 2011-03-16 | 2013-09-11 | 华为技术有限公司 | 粉末材料、制造通信设备的方法以及通信设备 |
CN102214852B (zh) * | 2011-03-16 | 2014-06-04 | 华为技术有限公司 | 制造谐振管的方法、谐振管和滤波器 |
CN102569976B (zh) * | 2012-03-13 | 2014-12-03 | 华为技术有限公司 | 一种谐振管及其制造方法、腔体滤波器 |
-
2010
- 2010-06-02 CN CN201010189285XA patent/CN101912967B/zh active Active
-
2011
- 2011-06-01 WO PCT/CN2011/075128 patent/WO2011150854A1/zh active Application Filing
- 2011-06-01 US US13/701,511 patent/US9196947B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2011150854A1 (zh) | 2011-12-08 |
US9196947B2 (en) | 2015-11-24 |
CN101912967A (zh) | 2010-12-15 |
CN101912967B (zh) | 2013-03-13 |
US20130127569A1 (en) | 2013-05-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2011150854A9 (zh) | 谐振杆制造方法、谐振杆及腔体滤波器 | |
CN103240412B (zh) | 一种近终形制备粉末超合金的方法 | |
CN110373561B (zh) | 一种粉末锻造制备高致密度细晶钛合金的方法 | |
CN110343887B (zh) | 一种粉末挤压制备高致密度细晶钛合金的方法 | |
CN102828096B (zh) | 一种金属陶瓷切削工具材料及其制备方法 | |
CN104889402A (zh) | 一种铝基粉末冶金零件的制备方法 | |
CN101524756A (zh) | 汽车变速箱齿环的一种粉末冶金生产方法 | |
CN102896318B (zh) | 粉末冶金法制备发电机爪极的方法及用该方法生产的爪极 | |
CN113500192B (zh) | 一种高流动性高强度金属粉末注射成型喂料及其应用方法 | |
CN105132799A (zh) | 一种用于单向轴承的粉末冶金材料及其制备方法 | |
CN105965007A (zh) | 一种采用多气氛辅助烧结制备粉末高速钢的方法 | |
CN107034375A (zh) | 一种利用氢化钛粉制备高致密度钛制品的方法 | |
CN102810716B (zh) | 谐振杆制造方法、谐振杆及腔体滤波器 | |
CN103056369A (zh) | 粉末冶金制作零件的生产工艺 | |
CN1060981C (zh) | 缝纫机用精密中梭的制法 | |
CN116536595A (zh) | 一种优质刀剪用梯度结构抗菌马氏体不锈钢 | |
CN102732747A (zh) | 以TiH2粉为原料粉末冶金法制备Ti-24Nb-8Sn合金的方法 | |
CN111922345B (zh) | 一种喷射成形过程中产生的粉末副产物的综合利用方法及产物的应用 | |
JP2003068514A (ja) | 圧粉磁心とその製造方法 | |
CN113913669A (zh) | 一种含p高强不锈钢制品的制备方法 | |
CN108526471B (zh) | 一种铁基粉末冶金摩擦轮的制备方法 | |
CN115044793B (zh) | 一种采用粉末注射成形制备两相高熵合金制作方法 | |
CN116356194B (zh) | 一种优质刀剪用梯度结构抗菌马氏体不锈钢的制备方法 | |
JPS62188735A (ja) | TiNi系合金線材又は板材の製造法 | |
CN108097967B (zh) | 一种扩散烧结与粉末挤压制备Fe-6.5%Si带材的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11789233 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13701511 Country of ref document: US |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 29/04/2013). |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11789233 Country of ref document: EP Kind code of ref document: A1 |