CN102810715A - Resonance rod, cavity filter and method for manufacturing resonance rod - Google Patents
Resonance rod, cavity filter and method for manufacturing resonance rod Download PDFInfo
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- CN102810715A CN102810715A CN2011101462786A CN201110146278A CN102810715A CN 102810715 A CN102810715 A CN 102810715A CN 2011101462786 A CN2011101462786 A CN 2011101462786A CN 201110146278 A CN201110146278 A CN 201110146278A CN 102810715 A CN102810715 A CN 102810715A
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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
The present invention relates to the microwave communication field, be specifically related to a kind of resonant rod and manufacturing approach thereof.
Background technology
Cavity body filter has good anti-interference as a kind of passive filter, and wide accommodation is widely used in moving communicating field.Cavity body filter comprises cavity and cover plate, and a plurality of cavitys are arranged on the cavity, accommodates a resonant rod in each cavity, therefore can use a plurality of resonant rods in a cavity body filter.
Resonant rod has irreplaceable effect in the cavity body filter, and resonant rod is the critical component that influences the cavity body filter performance index, and therefore the processing and manufacturing to resonant rod has strict requirement.
Make resonant rod at present and all adopt Digit Control Machine Tool (CNC) that resonant rod is carried out cut, the problem of therefore bringing is that the rapidoprint waste is serious, and stock utilization only has 60%～70%, and process time is longer, and working (machining) efficiency is merely 30～40/hour.
In research and practice process to prior art, inventor of the present invention finds that traditional cold-heading processing technology is mainly used in parts such as making bolt, nut, iron nail, rivet and steel ball.The forging stock material can be copper, aluminium, carbon steel, steel alloy, stainless steel and titanium alloy etc., and stock utilization can reach 80～90%.And existing resonant rod material be owing to will satisfy the requirement of the hardness and the coefficient of expansion, so it can not adopt cold heading technique to carry out one-shot forming processing.
Summary of the invention
In order to address the above problem, the invention provides a kind of resonant rod, the main part by weight of said resonant rod is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～8% carbonyl nickel constitutes.
The present invention also provides a kind of cavity body filter, comprises cavity resonant bar, and said resonant rod is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～8% carbonyl nickel constitutes by part by weight mainly.
The material mixture ratio that resonant rod among the present invention adopts can satisfy the requirement of the hardness and the coefficient of expansion, has good toughness simultaneously, can satisfy the requirement of cold-heading processing.
The present invention also provides a kind of manufacturing approach of resonant rod, comprising:
With part by weight is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～4% lubricant of 1%～8% carbonyl nickel and the part by weight total amount that is said Fe-Ni Alloy Powder, carbonyl iron dust, carbonyl nickel powder is made the resonant rod blank;
Said blank is carried out sintering process the iron-nickel alloy bar with annealing heat treatment;
Said bar is carried out cold-heading processing, make the resonant rod cold-heading molding;
Resonant rod behind the cold-heading molding is heat-treated.
Resonant rod manufacturing approach provided by the invention can produce the resonant rod that hardness, the coefficient of expansion and toughness all meet the demands, and adopts the mode of cold-heading processing, has reduced the loss of material, has improved working (machining) efficiency.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below, and obviously, the accompanying drawing in describing below only is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the schematic flow sheet of the resonant rod manufacturing approach of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention provides a kind of resonant rod, said resonant rod is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～8% carbonyl nickel constitutes by part by weight mainly.Said Fe-Ni Alloy Powder contains 36% nickel (by weight), and said iron-nickel alloy is raw material greater than 99.95% pure iron and purity greater than 99.96% pure nickel with purity.Cavity body filter provided by the invention has comprised described resonant rod.
The present invention also provides a kind of method of making said resonant rod, and is as shown in Figure 1, comprising:
Step S1: with part by weight is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～4% lubricant of 1%～8% carbonyl nickel and the part by weight total amount that is said Fe-Ni Alloy Powder, carbonyl iron dust, carbonyl nickel powder is made the resonant rod blank; Iron-nickel alloy described in this step is being raw material greater than 99.95% pure iron and purity greater than 99.96% pure nickel with purity; Atomizing of utilization high-pressure water or the preparation of aerosolization technology; Finally process the Fe-Ni Alloy Powder of molecule, operation such as broken through dehydration, oven dry, screening, fecula high temperature reduction, muffin again, as to sieve, close batch obtains the high purity iron Ni alloy powder of 36%Ni.Said high purity iron Ni alloy powder and pulverous carbonyl iron, carbonyl nickel and lubricant are carried out the even refinement of mechanical mixture; Lubricant among the present invention is mainly used in and promotes above-mentioned various metal dusts and alloy powder evenly to mix; The identical effect of other lubricants can select stearic acid lubricant, paraffin, polyvinyl alcohol for use and have to(for) lubricant; After accomplishing the even refinement of above-mentioned powder even mixed-powder is placed mould; Utilize hydraulic press in weight compression moulding next time, the pressure of this weight should be less than 100 tons of gravity that material produced, and the demoulding obtains the iron-nickel alloy blank of one-shot forming resonant rod then.
Step S2: said blank is carried out sintering process the iron-nickel alloy bar with annealing heat treatment;
In this step, the sintering temperature of blank being carried out sintering is set to 1350～1550 ℃, and sintering time is 3～10 hours; After sintering is accomplished with H
2Carry out annealing in process as reducing gas, annealing temperature is set to 1050～1250 ℃, and annealing time is 5～12 hours.In the process of sintering, lubricant evaporates from blank owing to high-temperature evaporation, therefore in the bar that makes, does not contain described lubricant.
Step S3: said bar is carried out cold-heading processing, make the resonant rod cold-heading molding;
In this step, described iron-nickel alloy bar is carried out cold-heading processing.Formulate supporting cold-heading punching die according to the dimensions of resonant rod product; And the mould of bonded products is set the device parameter of cold headers; Drop into described iron-nickel alloy bar then, according to the specification of resonant rod said alloy bar material is carried out blank, heading, accumulation, shaping, chamfering, thread rolling, undergauge, side cut, then cold-heading or cold extrusion; Accomplish the one-shot forming of resonant rod, one-time formed resonant rod is not had the fine finishining of cutting or few cutting.
Step S4: the resonant rod behind the cold-heading molding is heat-treated.
In existing cold heading technique, do not take the product step of heat treatment behind the cold-heading molding; After cold-heading is accomplished, the resonant rod of moulding is heat-treated the resonant rod that can access high-compactness and high gloss in the present embodiment, and need not follow-up machining.After resonant rod behind the cold-heading molding heat-treated, resonant rod is electroplated, needed earlier at the resonant rod copper coating, silver-plated to resonant rod then.Resonant rod through electroplating has the surface of good smoothness, avoids energy absorption and the interference of rough surface to microwave.
Be elaborated with specific embodiment below:
Embodiment 1: with part by weight is that 98% water atomization Fe-Ni Alloy Powder, part by weight are that 1% carbonyl iron dust, part by weight are that 1% lubricant of 1% carbonyl nickel powder and the part by weight total amount that is said Fe-Ni Alloy Powder, carbonyl iron dust, carbonyl nickel powder is a batching; Make the blank of resonant rod; This lubricant can be stearic acid lubricant, paraffin, polyvinyl alcohol; Select the stearic acid lubricant in the present embodiment for use; In this step; Select the pure iron of iron-holder＞99.95% and the pure nickel of nickel content＞99.96% for use, the alloy powder that contains 36%Ni of utilization high-pressure water atomization technique or steam fogization technology preparation, operation such as broken through dehydration, oven dry, screening, fecula high temperature reduction, muffin again, as to sieve, close batch obtains the high purity iron Ni alloy powder of 36%Ni.Said high purity iron Ni alloy powder and carbonyl iron dust, carbonyl nickel powder and stearic acid lubricant are carried out the even refinement of mechanical mixture; Then even mixed-powder is placed mould; Utilize hydraulic press in the briquetting pressure compression moulding next time that is not less than 100 tons, the demoulding obtains the iron-nickel alloy blank of one-shot forming resonant rod then.
Described blank is carried out sintering and the iron-nickel alloy bar is processed in heat treatment, and in this process, the sintering temperature of blank being carried out sintering is set to 1350～1550 ℃, and sintering time is 3～10 hours; After sintering is accomplished with H
2Carry out annealing in process as reducing gas, annealing temperature is set to 1050～1250 ℃, and annealing time is 5～12 hours.The sintering temperature of blank is set to 1550 ℃ in the present embodiment, and sintering time is set to 10 hours, and annealing temperature is set to 1250 ℃, and annealing time is set to 12 hours.Accomplish the processing of iron-nickel alloy bar.Through test, the impact toughness index of described iron-nickel alloy bar is 227.2J/cm
2, reduction of area is 74%, the coefficient of expansion is 4.0 * 10
-6/ K.
Through behind the sintering and heat treatment step of above-mentioned timeliness, described iron-nickel alloy bar is carried out cold-heading processing.Formulate supporting cold-heading punching die according to the dimensions of resonant rod product; And the mould of bonded products is set the device parameter of cold headers; Drop into described iron-nickel alloy bar then, according to the specification of resonant rod said alloy bar material is carried out blank, heading, accumulation, shaping, chamfering, thread rolling, undergauge, side cut, then cold-heading or cold extrusion; Accomplish the one-shot forming of resonant rod, one-time formed resonant rod is not had the fine finishining of cutting or few cutting.
Resonant rod behind the cold-heading molding is heat-treated.In existing cold heading technique, do not take the product step of heat treatment behind the cold-heading molding; After cold-heading is accomplished, the resonant rod of moulding is heat-treated the resonant rod that can access high-compactness and high gloss in the present embodiment, and need not follow-up machining.
After resonant rod behind the cold-heading molding heat-treated, resonant rod is electroplated.In this step, need elder generation at the resonant rod copper coating, silver-plated to resonant rod then.
Resonant rod through the method manufacturing in the present embodiment is that 98% iron-nickel alloy, part by weight are that 1% carbonyl iron, part by weight are that 1% carbonyl nickel constitutes by part by weight mainly.This resonant rod is installed on the cavity body filter, and through test, single chamber resonance frequency reaches 3500MHz, and temperature is floated less than 0.4MHz.
Embodiment 2: with part by weight is that 88% steam fog Fe-Ni Alloy Powder, part by weight are that 6% carbonyl iron dust, part by weight are that 4% stearic acid lubricant of 6% carbonyl nickel powder and the part by weight total amount that is said Fe-Ni Alloy Powder, carbonyl iron dust, carbonyl nickel powder is a batching, makes the blank of resonant rod.The sintering of said blank and heat treatment aging condition are: sintering temperature is set to 1350 ℃, and sintering time is set to 3 hours, and annealing temperature is set to 1050 ℃, and annealing time is set to 5 hours.The step of the manufacturing blank of the embodiment of the invention and manufacturing iron-nickel alloy bar can repeat no more with reference to the description of embodiment 1 here.
Through test, the impact toughness index of described iron-nickel alloy bar is 263.5J/cm
2, reduction of area is 68%, the coefficient of expansion is 2.7 * 10
-6/ K.
Resonant rod in the present embodiment is installed on the cavity body filter, and through test, single chamber resonance frequency reaches 3500MHz, and temperature is floated less than 0.3MHz.
Embodiment 3: with part by weight is that 93% water atomization Fe-Ni Alloy Powder, part by weight are that 4% carbonyl iron dust, part by weight are that 2% stearic acid lubricant of 3% carbonyl nickel powder and the part by weight total amount that is said Fe-Ni Alloy Powder, carbonyl iron dust, carbonyl nickel powder is a batching, makes the blank of resonant rod.The sintering of said blank and heat treatment aging condition are: sintering temperature is set to 1450 ℃, and sintering time is set to 6 hours, and annealing temperature is set to 1100 ℃, and annealing time is set to 8 hours.The step of the manufacturing blank of the embodiment of the invention and manufacturing iron-nickel alloy bar can repeat no more with reference to the description of embodiment 1 here.
Through test, the impact toughness index of described iron-nickel alloy bar is 317.6J/cm
2, reduction of area is 62%, hardness is that the coefficient of expansion is 1.8 * 10
-6/ K.
Resonant rod in the present embodiment is installed on the cavity body filter, and through test, single chamber resonance frequency reaches 3500MHz, and temperature is floated less than 0.2MHz.
Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. resonant rod is characterized in that: said resonant rod is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～8% carbonyl nickel constitutes by part by weight mainly.
2. resonant rod as claimed in claim 1 is characterized in that: said iron-nickel alloy contains 36% nickel.
3. cavity body filter is characterized in that: comprise cavity resonant bar, said resonant rod is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～8% carbonyl nickel constitutes by part by weight mainly.
4. cavity body filter as claimed in claim 3 is characterized in that: said iron-nickel alloy contains 36% nickel.
5. the manufacturing approach of a resonant rod is characterized in that, comprising:
With part by weight is that 88%～98% iron-nickel alloy, part by weight are that 1%～8% carbonyl iron, part by weight are that 1%～4% lubricant of 1%～8% carbonyl nickel and the part by weight total amount that is said iron-nickel alloy, carbonyl iron, carbonyl nickel is made the resonant rod blank;
Said blank is carried out continuous sintering process the iron-nickel alloy bar with annealing heat treatment;
Said bar is carried out cold-heading processing, make the resonant rod cold-heading molding;
Resonant rod behind the cold-heading molding is heat-treated.
6. the manufacturing approach of resonant rod as claimed in claim 5, it is characterized in that: described lubricant is the stearic acid lubricant.
7. the manufacturing approach of resonant rod as claimed in claim 5 is characterized in that: said iron-nickel alloy is to select pure iron and pure nickel utilization high-pressure water atomizing or the preparation of aerosolization technology for use.
8. like the manufacturing approach of claim 5 or 6 or 7 described resonant rods, it is characterized in that: said manufacturing resonant rod blank comprises:
Said iron-nickel alloy, carbonyl iron, carbonyl nickel and lubricant are carried out the even refinement of mechanical mixture, place mould then, in weight compression moulding next time.
9. the manufacturing approach of resonant rod as claimed in claim 5 is characterized in that: said cold-heading processing comprises:
Specification according to resonant rod is carried out blank, heading, accumulation, shaping, chamfering, thread rolling, undergauge, side cut to said alloy bar material.
10. the manufacturing approach of resonant rod as claimed in claim 9 is characterized in that: said resonant rod behind the cold-heading molding is heat-treated after, resonant rod is electroplated, comprising: in resonant rod surface plating layer of copper, silver-plated to resonant rod then earlier.
11. the manufacturing approach of resonant rod as claimed in claim 5 is characterized in that: said resonant rod behind the cold-heading molding is heat-treated comprises:
The heat-treatment temperature range of resonant rod is set to 400～1000 ℃, and heat treated reducing gases is H
2, heat treated annealing time is 1～3 hour.
12. the manufacturing approach of resonant rod as claimed in claim 5 is characterized in that: saidly said blank is carried out sintering and heat treatment process the iron-nickel alloy bar and comprise:
The sintering temperature of blank being carried out sintering is set to 1350～1550 ℃, and sintering time is 3～10 hours;
After sintering is accomplished with H
2Carry out annealing in process as reducing gas, annealing temperature is set to 1050～1250 ℃, and annealing time is 5～12 hours.
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| CN2011101462786A CN102810715A (en) | 2011-06-01 | 2011-06-01 | Resonance rod, cavity filter and method for manufacturing resonance rod |
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| CN2011101462786A CN102810715A (en) | 2011-06-01 | 2011-06-01 | Resonance rod, cavity filter and method for manufacturing resonance rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259747A (en) * | 2014-07-30 | 2015-01-07 | 成都晋杰汽车零部件有限公司 | Cold heading forming process of filter resonance rod |
| CN105870570A (en) * | 2016-04-01 | 2016-08-17 | 苏州欣天新精密机械有限公司 | Preparation method of composite material resonant column |
| CN107845851A (en) * | 2017-10-19 | 2018-03-27 | 成都旭思特科技有限公司 | The cavity body filter manufacture method of bolt quantity can be reduced |
| CN108161350A (en) * | 2017-12-19 | 2018-06-15 | 江苏伊莱尔电力科技有限公司 | A kind of filter resonance bar moulding process |
| CN109216842A (en) * | 2017-07-07 | 2019-01-15 | 日本电产株式会社 | The manufacturing method of waveguide assembly |
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| CN101877427A (en) * | 2010-07-02 | 2010-11-03 | 深圳市大富科技股份有限公司 | Communication device, cavity filter, resonating tube and manufacturing method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101877427A (en) * | 2010-07-02 | 2010-11-03 | 深圳市大富科技股份有限公司 | Communication device, cavity filter, resonating tube and manufacturing method thereof |
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| 刘宗昌等: "去氢退火工艺的设计及应用", 《金属热处理》, vol. 28, no. 3, 8 January 2004 (2004-01-08), pages 51 - 53 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259747A (en) * | 2014-07-30 | 2015-01-07 | 成都晋杰汽车零部件有限公司 | Cold heading forming process of filter resonance rod |
| CN105870570A (en) * | 2016-04-01 | 2016-08-17 | 苏州欣天新精密机械有限公司 | Preparation method of composite material resonant column |
| CN109216842A (en) * | 2017-07-07 | 2019-01-15 | 日本电产株式会社 | The manufacturing method of waveguide assembly |
| CN107845851A (en) * | 2017-10-19 | 2018-03-27 | 成都旭思特科技有限公司 | The cavity body filter manufacture method of bolt quantity can be reduced |
| CN108161350A (en) * | 2017-12-19 | 2018-06-15 | 江苏伊莱尔电力科技有限公司 | A kind of filter resonance bar moulding process |
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Application publication date: 20121205 |