CN103231057A - Preparation method for Stirling engine heat regenerator - Google Patents
Preparation method for Stirling engine heat regenerator Download PDFInfo
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- CN103231057A CN103231057A CN2013101246057A CN201310124605A CN103231057A CN 103231057 A CN103231057 A CN 103231057A CN 2013101246057 A CN2013101246057 A CN 2013101246057A CN 201310124605 A CN201310124605 A CN 201310124605A CN 103231057 A CN103231057 A CN 103231057A
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- silk screen
- stirling engine
- high temperature
- regenerator
- temperature alloy
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Abstract
The invention discloses a preparation method for a Stirling engine heat regenerator. The preparation method comprises the steps of stamping a stainless steel silk screen into a plurality of wafers, stacking the wafers and then placing the wafers in a high-temperature alloy die, performing vacuum sintering on the high-temperature alloy die, performing gas quenching on the high-temperature alloy die to room temperature, finally taking out the silk screen wafers and performing chamfering and excircle grinding treatment on the silk screen wafers, and obtaining the Stirling engine heat regenerator. The stainless steel silk screen has excellent heat exchange and flowing performance and is convenient to manufacture and low in price, appropriate mesh diameters of the stainless steel silk screen and appropriate layer numbers are selected, and the problems that weight and air permeability of the heat regenerator are conflicted with each other, flow resistance is caused easily, and heat exchange efficiency is low are solved. Simultaneously, the silk screen wafers are processed by adopting a sintering process, service life of the heat regenerator is prolonged, the silk screen wafers are processed by adopting a spark erosion technology, and excellence of dimensional accuracy of the heat regenerator is guaranteed.
Description
Technical field
The present invention relates to the metal polyporous material technical field, be specifically related to a kind of preparation method of Stirling engine regenerator.
Background technology
Increasingly serious along with energy problem, regenerative resources such as solar energy more and more are subjected to people's attention.Dish formula heat generating system becomes one of the most potential mode of solar energy utilization owing to have special advantages, Stirling engine is the critical component in the dish formula heat generating system, and regenerator is the core in the Stirling engine, and the performance quality of regenerator directly has influence on the efficient of dish formula heat generating system.
Regenerator is connected between heater and the cooler, and when working medium is expansion chamber from hot chamber, when flowing to cold chamber and being compression chamber, regenerator absorption portion heat energy makes working medium drop to minimum temperature from maximum cycle temperature; When working medium flowed to hot chamber from cold chamber, regenerator will absorb the heat that comes to be put back to working medium, makes the working medium temperature that flows out regenerator become maximum cycle temperature, and the heat exchange engineering is namely carried out by this way.
In theory, the gain and loss of regenerator empty calory in a circulation, it only plays a part alternately from the working medium heat absorption with to the working medium heat release, therefore we can say that regenerator is a storage heater, it can be regarded as one " heating power sponge ", alternately heat absorption and heat release, regenerator plays energy-conservation significant role in accumulation of energy, and its validity is very big to the performance impact of Stirling-electric hybrid.
Regenerator is the core component of Stirling engine, and its material and structure directly influence the complete machine performance, and regenerator commonly used at present has plate regenerator, ceramic honey comb regenerator and woven wire regenerator etc.
Plate regenerator can be formed by the direct line cutting of metal, also can utilize the manual electric welding of sheet metal and wire to form.The horizontal heat-conducting effect of plate regenerator is not as woven wire, and for the hot machine of high frequency heat sound, there is the big problem of difficulty of processing in plate regenerator.
The ceramic honey comb regenerator is directly to utilize the monoblock ceramic honey comb as regenerator, does not need processing, can be directly customized according to demand.The setting technical guarantee gas passage of ceramic honey comb maturation is smooth, and flow resistance is less, but the thermal conductance of ceramic material determines that the horizontal exchange capability of heat of ceramic honey comb regenerator is relatively poor.
Woven wire is because having good heat exchange and mobile performance, and easy to make, cheap, thereby becomes the preferred material of regenerator matrix.The woven wire regenerator is to be piled up by silk netting to form, and generally with mould punching press or line cutting direct forming, it is convenient to load, the processing technology maturation.The horizontal heat-conducting effect of woven wire is better, but because the randomness in processing and the filling process, the woven wire wire is interlaced, causes the woven wire regenerator to produce flow resistance, and influence is bigger in the hot machine of minitype thermoacoustic.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of Stirling engine regenerator easily produces flow resistance, the problem that heat exchange efficiency is low to solve existing woven wire regenerator.
The technical solution used in the present invention is, the preparation method of Stirling engine regenerator, stainless steel cloth is struck out several disks, put into the high temperature alloy mould after again it being piled up, then the high temperature alloy mould is carried out vacuum-sintering, again it is carried out gas and quench to room temperature, carry out chamfering and peripheral milling processing with the taking-up of silk screen disk and to it at last, namely make Stirling engine regenerator of the present invention.
Characteristics of the present invention also are,
The preparation method of Stirling engine regenerator, specifically implement according to following steps:
Step 1 strikes out several silk screen disks with stainless steel cloth, gets 850～950 silk screen disks, puts into the high temperature alloy mould after it is piled up;
Step 2 is put into vacuum sintering furnace with the high temperature alloy mould of the silk screen disk of packing in the step 1, carries out high temperature sintering, in the vacuum sintering furnace burner hearth it is carried out gas after sintering is finished and quenches, and gas is quenched and the high temperature alloy mould come out of the stove to room temperature again;
Step 3 is quenched the gas in the step 2 to the silk screen disk of room temperature and is taken out from the high temperature alloy mould, with electric spark this silk screen disk is carried out chamfering then and peripheral milling is handled, and namely makes Stirling engine regenerator of the present invention.
Stainless steel cloth in the step 1 is that material is 0Cr
17Ni
12Mo
2The plain weave stainless steel cloth, its mesh diameter is Φ 62～Φ 80 μ m, its footpath is Φ 0.045～Φ 0.055mm, the diameter of the silk screen disk that punching press obtains is Φ 60.1 ± 0.01mm.
Sintering temperature in the step 2 is 1240～1260 ℃, and temperature retention time is 3.5～4.5 hours.
Chamfering in the step 3 is 4.2 ± 0.1 °, the silk screen disk after described peripheral milling is handled, and its outside diameter is 60.00 ± 0.02mm.
The invention has the beneficial effects as follows, the stainless steel cloth that the present invention adopts has good heat exchange and mobile performance, and it is easy to make, cheap, select the mesh diameter of suitable stainless steel cloth and the suitable number of plies for use, the weight and the gas permeability that have solved regenerator are conflicting, easily produce flow resistance, the problem that heat exchange efficiency is low, simultaneously, adopt sintering process to handle the silk screen disk, prolonged the life-span of regenerator, adopted Technology of Electric Spark Corroding to handle the silk screen disk, guaranteed that the dimensional accuracy of regenerator is good.
The specific embodiment
The present invention is described in detail below in conjunction with the specific embodiment.
The invention provides a kind of preparation method of Stirling engine regenerator, stainless steel cloth is struck out some disks, put into the high temperature alloy mould after again it being piled up, then the high temperature alloy mould is carried out vacuum-sintering, again it being carried out gas quenches to room temperature, carry out chamfering and peripheral milling processing with the taking-up of silk screen disk and to it at last, namely make Stirling engine regenerator of the present invention, specifically implement according to following steps:
Step 1 is 0Cr with material
17Ni
12Mo
2Mesh diameter is Φ 62～Φ 80 μ m, and the silk footpath is the plain weave stainless steel cloth of Φ 0.045～Φ 0.055mm, and striking out several diameters is the silk screen disk of Φ 60.1 ± 0.01mm, get 850～950 silk screen disks, put into the high temperature alloy mould after it is piled up;
Step 2, the high temperature alloy mould of the silk screen disk of packing in the step 1 is put into vacuum sintering furnace, carry out high temperature sintering, its sintering temperature is 1240～1260 ℃, temperature retention time is 3.5～4.5 hours, after sintering is finished, in the vacuum sintering furnace burner hearth it is carried out gas and quench, gas is quenched and the high temperature alloy mould is taken out from vacuum sintering furnace to room temperature again;
Step 3, gas in the step 2 quenched to the high temperature alloy mould of room temperature open, take out the silk screen disk, with electric spark this silk screen disk is carried out chamfering and peripheral milling processing then, wherein the chamfering of silk screen disk is 4.2 ± 0.1 °, outside diameter is 60.00 ± 0.02mm, namely makes Stirling engine regenerator of the present invention.
Embodiment 1
The selection material is 0Cr
17Ni
12Mo
2The plain weave stainless steel cloth, its mesh diameter is Φ 62 μ m, the silk footpath is Φ 0.055mm, this plain weave stainless steel cloth is struck out the silk screen disk of several Φ 60.11mm, get and be placed in the GH60 high temperature alloy mould after 900 silk screen disks pile up, again this high temperature alloy mould is put into vacuum sintering furnace and carry out high temperature sintering, sintering temperature is 1250 ℃, be incubated 4 hours, in the vacuum sintering furnace burner hearth it is carried out gas after insulation finishes and quench, gas is quenched and to room temperature GH60 high temperature alloy mould come out of the stove, and is last, gas is quenched to the silk screen disk of room temperature, take out from GH60 high temperature alloy mould, with electric spark the silk screen disk is carried out chamfering and peripheral milling processing then, the chamfering of the silk screen disk of handling well is 4.1 °, outside diameter is Φ 60.02mm, namely makes Stirling engine regenerator of the present invention.
Embodiment 2
The selection material is 0Cr
17Ni
12Mo
2The plain weave stainless steel cloth, its mesh diameter is Φ 71 μ m, the silk footpath is Φ 0.045mm, this plain weave stainless steel cloth is struck out the silk screen disk of several Φ 60.1mm, get and be placed in the GH60 high temperature alloy mould after 850 silk screen disks pile up, again this high temperature alloy mould is put into vacuum sintering furnace and carry out high temperature sintering, sintering temperature is 1260 ℃, be incubated 3.5 hours, in the vacuum sintering furnace burner hearth it is carried out gas after insulation finishes and quench, gas is quenched and to room temperature GH60 high temperature alloy mould come out of the stove, and is last, gas is quenched to the silk screen disk of room temperature, take out from GH60 high temperature alloy mould, with electric spark the silk screen disk is carried out chamfering and peripheral milling processing then, the chamfering of the silk screen disk of handling well is 4.3 °, outside diameter is Φ 60mm, namely makes Stirling engine regenerator of the present invention.
Embodiment 3
The selection material is 0Cr
17Ni
12Mo
2The plain weave stainless steel cloth, its mesh diameter is Φ 80 μ m, the silk footpath is Φ 0.050mm, this plain weave stainless steel cloth is struck out the silk screen disk of several Φ 60.09mm, get and be placed in the GH60 high temperature alloy mould after 950 silk screen disks pile up, again this high temperature alloy mould is put into vacuum sintering furnace and carry out high temperature sintering, sintering temperature is 1240 ℃, be incubated 4.5 hours, in the vacuum sintering furnace burner hearth it is carried out gas after insulation finishes and quench, gas is quenched and to room temperature GH60 high temperature alloy mould come out of the stove, and is last, gas is quenched to the silk screen disk of room temperature, take out from GH60 high temperature alloy mould, with electric spark the silk screen disk is carried out chamfering and peripheral milling processing then, the chamfering of the silk screen disk of handling well is 4.2 °, outside diameter is Φ 59.98mm, namely makes Stirling engine regenerator of the present invention.
The plain weave stainless steel cloth that the preparation method of Stirling engine regenerator of the present invention adopts has good heat exchange and mobile performance, and it is easy to make, cheap, select the mesh diameter of suitable stainless steel cloth and the suitable number of plies for use, the weight and the gas permeability that have solved regenerator are conflicting, easily produce flow resistance, the problem that heat exchange efficiency is low, simultaneously, adopt sintering process to handle the silk screen disk, prolonged the life-span of regenerator, adopt Technology of Electric Spark Corroding to handle the silk screen disk, guaranteed that the dimensional accuracy of regenerator is good.
Claims (5)
1. the preparation method of Stirling engine regenerator, it is characterized in that, stainless steel cloth is struck out several disks, put into the high temperature alloy mould after again it being piled up, then the high temperature alloy mould is carried out vacuum-sintering, again it is carried out gas and quench to room temperature, carry out chamfering and peripheral milling processing with the taking-up of silk screen disk and to it at last, namely make Stirling engine regenerator of the present invention.
2. the preparation method of Stirling engine regenerator as claimed in claim 1 is characterized in that, specifically implements according to following steps:
Step 1 strikes out several silk screen disks with stainless steel cloth, gets 850～950 silk screen disks, puts into the high temperature alloy mould after it is piled up;
Step 2 is put into vacuum sintering furnace with the high temperature alloy mould of the silk screen disk of packing in the step 1, carries out high temperature sintering, in the vacuum sintering furnace burner hearth it is carried out gas after sintering is finished and quenches, and gas is quenched and the high temperature alloy mould come out of the stove to room temperature again;
Step 3 is quenched the gas in the step 2 to the silk screen disk of room temperature and is taken out from the high temperature alloy mould, with electric spark this silk screen disk is carried out chamfering then and peripheral milling is handled, and namely makes Stirling engine regenerator of the present invention.
3. the preparation method of Stirling engine regenerator as claimed in claim 2 is characterized in that, the stainless steel cloth in the described step 1 is that material is 0Cr
17Ni
12Mo
2The plain weave stainless steel cloth, its mesh diameter is Φ 62～Φ 80 μ m, its footpath is Φ 0.045～Φ 0.055mm, the diameter of the silk screen disk that punching press obtains is Φ 60.1 ± 0.01mm.
4. the preparation method of Stirling engine regenerator as claimed in claim 2 is characterized in that, the sintering temperature in the described step 2 is 1240～1260 ℃, and temperature retention time is 3.5～4.5 hours.
5. the preparation method of Stirling engine regenerator as claimed in claim 2 is characterized in that, the chamfering in the described step 3 is 4.2 ± 0.1 °, the silk screen disk after described peripheral milling is handled, and its outside diameter is 60.00 ± 0.02mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474783A (en) * | 2015-01-07 | 2015-04-01 | 江苏云才材料有限公司 | Nickel-copper alloy sintered silk screen filter plate and manufacturing method thereof |
| CN106288540A (en) * | 2016-08-30 | 2017-01-04 | 昆明物理研究所 | The processing method of filling body used by the regenerator of sterlin refrigerator and regenerator |
| CN114074152A (en) * | 2020-08-13 | 2022-02-22 | 中国科学院理化技术研究所 | Sintering method of regenerator wire mesh |
| CN114506133A (en) * | 2020-11-16 | 2022-05-17 | 鞍钢股份有限公司 | Preparation method of foam steel with uniform structure |
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| JPS6241954A (en) * | 1985-08-20 | 1987-02-23 | Mitsubishi Electric Corp | Regenerator for heat exchanger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474783A (en) * | 2015-01-07 | 2015-04-01 | 江苏云才材料有限公司 | Nickel-copper alloy sintered silk screen filter plate and manufacturing method thereof |
| CN106288540A (en) * | 2016-08-30 | 2017-01-04 | 昆明物理研究所 | The processing method of filling body used by the regenerator of sterlin refrigerator and regenerator |
| CN106288540B (en) * | 2016-08-30 | 2019-04-05 | 昆明物理研究所 | The processing method of filling body used in the regenerator and regenerator of sterlin refrigerator |
| CN114074152A (en) * | 2020-08-13 | 2022-02-22 | 中国科学院理化技术研究所 | Sintering method of regenerator wire mesh |
| CN114074152B (en) * | 2020-08-13 | 2023-12-19 | 中国科学院理化技术研究所 | Screen sintering method for heat regenerator |
| CN114506133A (en) * | 2020-11-16 | 2022-05-17 | 鞍钢股份有限公司 | Preparation method of foam steel with uniform structure |
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| CN103231057B (en) | 2015-12-09 |
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Address after: 710201 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 15 Patentee after: Xi'an ferro metal filter material Co.,Ltd. Address before: 710201 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 15 Patentee before: XI'AN FILTER METAL MATERIALS Co.,Ltd. |