CN102848089A - Manufacturing method of satellite filter element - Google Patents
Manufacturing method of satellite filter element Download PDFInfo
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- CN102848089A CN102848089A CN201110182352XA CN201110182352A CN102848089A CN 102848089 A CN102848089 A CN 102848089A CN 201110182352X A CN201110182352X A CN 201110182352XA CN 201110182352 A CN201110182352 A CN 201110182352A CN 102848089 A CN102848089 A CN 102848089A
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- spot welding
- skeleton
- tinsel
- filter screen
- framework
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Abstract
The invention discloses a manufacturing method of a satellite filter element. The manufacturing method of the satellite filter element includes determining the size of a filter net according to the diameter and length of a cylindrical surface of a framework, and blanking; designing an 'I'-shaped metal foil according to an arc window of the framework; fixing one end of the filter net to framework ribs, wrapping the framework with the filter net, fixing the edges of the filter net to the framework ribs by resistance spot welding, and performing resistance spot welding at a directional arc parallel to an axis of the framework and two circumferences perpendicular to the axis of the framework; fixing 'I'-ribs of the 'I'-shaped metal foil to the lap joint of the filter net, and welding the metal foil and the framework together by resistance spot welding; wrapping the spot-welded parts with aluminized films onto the exposed outer surface of the filter net, and exposing the outline of the metal foil only; welding the wrapped parts by impulsed spot welding at the positions of resistance spot welding; removing the aluminized films from the products subjected to laser welding, and cleaning with acetone. The manufacturing method is widely applicable to design and manufacture of spacecraft filter elements.
Description
Technical field
The present invention relates to satellite propulsion system filter element manufacturing technology, be specifically related to a kind of manufacture method of satellite filter element.
Background technology
Some satellite propulsion system adopts surface tension propellant tank as the propulsion system of the pressure type unit hydrazine catalysis that falls of propellant tank.This system requires very harsh to the cleanliness factor of propellant unit hydrazine, fifth wheel or other pollutants may occur in orbit for a long time and stop up the magnetic valve screen pack, cause monopropellant engine to light a fire, thereby cause whole star system in paralyzed state in space, even scrap and become space trash.
The satellite filter element mainly is comprised of skeleton and filter screen, wherein filter screen is wrapped on the face of cylinder of skeleton, skeleton has been opened a plurality of arc-shaped windows, and propellant flows into from filter inlet and enters filter core, and the strainer filtering by filter core is in the titanium alloy pipeline is sent to magnetic valve and thrust chamber head.
The manufacturing step that filter element is commonly used at present is: (1) adopts filter screen tightly to stick together along the skeleton face of cylinder.(2) by the resistance spot welding mode filter screen is fixed on the skeleton.
This manufacture method is applicable to the product without blow-up point requirement or blow-up point requirement very low (being lower than 100Pa).And for blow-up point (greater than the 1860Pa) product of having relatively high expectations, this manufacture method obviously is inappropriate.
The blow-up point of filter element is on the low side to be that weld seam does not play preferably sealing function because adopt electric resistance welding method spot welding filter screen and skeleton.
Do not find at present explanation or the report of technology similar to the present invention, not yet collect both at home and abroad similarly data yet.
Summary of the invention
In order to solve the excessively low problem of filter core blow-up point, this bright technical problem to be solved is the manufacture method that proposes a kind of satellite filter element, and the present invention adopts the mode substitutional resistance spot welding mode of melting, guarantees skeleton and the whole combinations in filter cloth edge place; For preventing filter screen by burn-through, the present invention is at filter cloth edge burden tinsel.
The present invention is that the technical scheme that its technical problem of solution adopts is: a kind of manufacture method of satellite filter element, the method comprises the steps:
Step 1: diameter and length according to the skeleton face of cylinder are determined filter screen size and blanking; According to skeleton arc-shaped window design " I-shaped " tinsel, the width of " I-shaped " tinsel is determined according to the width of window and rib;
Step 2: filter screen one end is fixed on the skeleton rib, filter screen is wrapped on the skeleton, adopt resistance spot welding method with filter cloth edge fixedly on the skeleton rib, the spot welding position is the direction circular arc and two circumferences perpendicular to the skeleton axis that are parallel to the skeleton axis;
Step 3: " I " rib of " I-shaped " tinsel is fixed on filter screen lap-joint, and with tinsel and skeleton resistance spot welding together;
Step 4: the part metallized film that will put postwelding is wrapped in exposed filter screen outer surface, only exposes the tinsel outline;
Step 5: adopt the mode of impulsed spot welding to weld the part that wraps, the welding position is along the resistance spot welding position;
Step 6: the product after the Laser Welding is removed metallized film, and adopt acetone to clean, prepare to carry out subsequent detection.
Preferably, in the step 1 of the manufacture method of the above-mentioned satellite filter element of the present invention, " I-shaped " tinsel is smooth without folding line, and thickness is 0.1mm; Filter screen is smooth without folding line, without the running phenomenon; The width of " I-shaped " tinsel is not less than 1mm.
Preferably, in the step 2 of the manufacture method of the above-mentioned satellite filter element of the present invention, spot welding voltage is 80-100V, and spot size is 0.5mm; Point postwelding part is without protuberance, and non-notch is without obviously uneven, without leak source.
Preferably, in the step 3 of the manufacture method of the above-mentioned satellite filter element of the present invention, spot welding voltage is 150-200V, and spot size is 0.6mm; Point postwelding part is without protuberance, and non-notch is without obviously uneven, without leak source.
Preferably, in the step 5 of the manufacture method of the above-mentioned satellite filter element of the present invention, the pulse power of impulsed spot welding is 300～500W, and pulse frequency is 1PPS, and spot pitch is no more than 0.3mm, and the type of focusing is surface coke; Argon flow amount is 8～12L/min.
Relative prior art, satellite filter element manufacture method of the present invention can the Effective Raise blow-up point, prevents that fifth wheel from stopping up engine electromagnetic valve.The present invention can be widely used in the Design and manufacture of various spacecraft filter core products.
Description of drawings
Fig. 1 is the structural representation of satellite filter element.
Fig. 2 is the structural representation of " I-shaped " tinsel.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further set forth the present invention.These embodiment are interpreted as only being used for explanation the present invention and are not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can make various changes or modifications the present invention, and these equivalences change and modification falls into claim limited range of the present invention equally.
The welding of employing melting method can guarantee the sealing that filter core is good, but the filter screen wall thickness is thinner, easy burn-through, and with contraction, should not adopt direct melting method to weld, therefore can prevent the filter screen weldering broken by increasing tinsel.For guaranteeing the place to be welded applying of filter screen and skeleton, tinsel and filter screen well, should be with filter screen and skeleton, tinsel, filter screen and skeleton spot welding together before melting welding.
Fusion welding method generally comprises argon arc welding, electron beam welding, Laser Welding etc., but the input of argon arc welding heat is large, and is difficult to control, and filter screen burns easily in actual production; The electron beam cost is high, production efficiency is low, and the following preferred embodiment of the present invention adopts the Laser Welding method.
Shown in Fig. 1-2, the preferred embodiment of the present invention is crossed the low manufacture method of a kind of star with the filter element welding that provide for solving the filter core blow-up point, comprises the steps:
Step 1: diameter and length according to the skeleton face of cylinder are determined the filter screen size, and blanking (filter screen should be smooth without folding line, without the running phenomenon), (thickness is 0.1mm according to skeleton arc-shaped window design " I-shaped " tinsel, tinsel should be smooth without folding line, adopt the mode of line cutting to finish), see Fig. 1." I-shaped " width is determined (metal width generally is not less than 1mm) according to the width of window and rib.
Step 2: filter screen one end is fixed on the skeleton rib, filter screen is wrapped on the skeleton, and with filter screen and skeleton, and adopt resistance spot welding method with filter cloth edge fixedly on the skeleton rib, the spot welding position is the direction circular arc and two circumferences perpendicular to the skeleton axis that are parallel to the skeleton axis.Spot welding voltage is 80-100V, and spot size is 0.5mm, and some postwelding part has not allowed protuberance, breach, the obvious defective such as gentle leak source not.
Step 3: " I " rib of " I-shaped " tinsel is fixed on filter screen lap-joint, and with tinsel and skeleton resistance spot welding together.Spot welding voltage is 150-200V, and spot size is 0.6mm, and part has not allowed protuberance, breach, the obvious defective such as gentle leak source not after the electric welding.
Step 4: the part metallized film that will put postwelding is wrapped in exposed filter screen outer surface, only exposes the tinsel outline.
Step 5: adopt the mode of impulsed spot welding to weld the part that wraps, the welding position is along the resistance spot welding position.The pulse power of impulsed spot welding is 300～500W, and pulse frequency is 1PPS, and spot pitch is no more than 0.3mm, and the type of focusing is surface coke, and argon flow amount is 8～12L/min.
Step 6: the product after the Laser Welding is removed metallized film, and adopt acetone to clean, prepare to carry out subsequent detection.
The blow-up point of filter element is on the low side to be that weld seam does not play preferably sealing function because adopt electric resistance welding method spot welding filter screen and skeleton.Present embodiment adopts the mode substitutional resistance spot welding mode of melting, guarantees skeleton and the whole combinations in filter cloth edge place; For preventing filter screen by burn-through, present embodiment is at filter cloth edge burden tinsel.
Claims (5)
1. the manufacture method of a satellite filter element is characterized in that, the method comprises the steps:
Step 1: diameter and length according to the skeleton face of cylinder are determined filter screen size and blanking; According to skeleton arc-shaped window design " I-shaped " tinsel, the width of " I-shaped " tinsel is determined according to the width of window and rib;
Step 2: filter screen one end is fixed on the skeleton rib, filter screen is wrapped on the skeleton, adopt resistance spot welding method with filter cloth edge fixedly on the skeleton rib, the spot welding position is the direction circular arc and two circumferences perpendicular to the skeleton axis that are parallel to the skeleton axis;
Step 3: " I " rib of " I-shaped " tinsel is fixed on filter screen lap-joint, and with tinsel and skeleton resistance spot welding together;
Step 4: the part metallized film that will put postwelding is wrapped in exposed filter screen outer surface, only exposes the tinsel outline;
Step 5: adopt the mode of impulsed spot welding to weld the part that wraps, the welding position is along the resistance spot welding position;
Step 6: the product after the Laser Welding is removed metallized film, and adopt acetone to clean, prepare to carry out subsequent detection.
2. the manufacture method of satellite filter element according to claim 1 is characterized in that, in the step 1, " I-shaped " tinsel is smooth without folding line, and thickness is 0.1mm; Filter screen is smooth without folding line, without the running phenomenon; The width of " I-shaped " tinsel is not less than 1mm.
3. the manufacture method of satellite filter element according to claim 1 is characterized in that, in the step 2, spot welding voltage is 80-100V, and spot size is 0.5mm; Point postwelding part is without protuberance, and non-notch is without obviously uneven, without leak source.
4. the manufacture method of satellite filter element according to claim 1 is characterized in that, in the step 3, spot welding voltage is 150-200V, and spot size is 0.6mm; Point postwelding part is without protuberance, and non-notch is without obviously uneven, without leak source.
5. the manufacture method of satellite filter element according to claim 1 is characterized in that, in the step 5, the pulse power of impulsed spot welding is 300～500W, and pulse frequency is 1PPS, and spot pitch is no more than 0.3mm, and the type of focusing is surface coke; Argon flow amount is 8～12L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110182352.XA CN102848089B (en) | 2011-06-30 | 2011-06-30 | The manufacture method of satellite filter element |
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| CN201110182352.XA CN102848089B (en) | 2011-06-30 | 2011-06-30 | The manufacture method of satellite filter element |
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| CN102848089A true CN102848089A (en) | 2013-01-02 |
| CN102848089B CN102848089B (en) | 2016-05-11 |
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| CN201110182352.XA Active CN102848089B (en) | 2011-06-30 | 2011-06-30 | The manufacture method of satellite filter element |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625380A (en) * | 2015-02-26 | 2015-05-20 | 郭玉 | Welding device for filter guard net |
| CN107838573A (en) * | 2017-12-18 | 2018-03-27 | 重庆海国科技有限公司 | A kind of two point circumference welder |
| CN109128543A (en) * | 2018-10-09 | 2019-01-04 | 华北水利水电大学 | A kind of complex welding method of stainless steel seawater filter core |
| CN115783313A (en) * | 2022-11-09 | 2023-03-14 | 上海空间推进研究所 | Annular on-orbit propellant screen collector surface and tension storage tank |
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| CN1041555A (en) * | 1988-10-03 | 1990-04-25 | 苏联立陶宛科学院物理研究所 | Laser Processing is made the method for filter and is realized the device of this method |
| DE102004023716A1 (en) * | 2004-05-11 | 2005-12-01 | Boll & Kirch Filterbau Gmbh | Method for fixing filter cloths to supports comprises applying heat to support on opposite side to cloth |
| CN1738673A (en) * | 2003-01-24 | 2006-02-22 | 中央发条株式会社 | Filter member producing method |
| CN1765557A (en) * | 2004-10-25 | 2006-05-03 | 北京海能海特石油科技发展有限公司 | Production method of sand-prevention tube and welding equipment |
| RU2361069C2 (en) * | 2006-02-27 | 2009-07-10 | Бейджин Хайнен-Хайтек Петролеум Текнолоджи Девелопмент Ко., Лтд | Method for filter production |
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2011
- 2011-06-30 CN CN201110182352.XA patent/CN102848089B/en active Active
Patent Citations (5)
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| CN1041555A (en) * | 1988-10-03 | 1990-04-25 | 苏联立陶宛科学院物理研究所 | Laser Processing is made the method for filter and is realized the device of this method |
| CN1738673A (en) * | 2003-01-24 | 2006-02-22 | 中央发条株式会社 | Filter member producing method |
| DE102004023716A1 (en) * | 2004-05-11 | 2005-12-01 | Boll & Kirch Filterbau Gmbh | Method for fixing filter cloths to supports comprises applying heat to support on opposite side to cloth |
| CN1765557A (en) * | 2004-10-25 | 2006-05-03 | 北京海能海特石油科技发展有限公司 | Production method of sand-prevention tube and welding equipment |
| RU2361069C2 (en) * | 2006-02-27 | 2009-07-10 | Бейджин Хайнен-Хайтек Петролеум Текнолоджи Девелопмент Ко., Лтд | Method for filter production |
Non-Patent Citations (1)
| Title |
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| 王者昌 等: "过滤器的焊接", 《焊接》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625380A (en) * | 2015-02-26 | 2015-05-20 | 郭玉 | Welding device for filter guard net |
| CN107838573A (en) * | 2017-12-18 | 2018-03-27 | 重庆海国科技有限公司 | A kind of two point circumference welder |
| CN109128543A (en) * | 2018-10-09 | 2019-01-04 | 华北水利水电大学 | A kind of complex welding method of stainless steel seawater filter core |
| CN115783313A (en) * | 2022-11-09 | 2023-03-14 | 上海空间推进研究所 | Annular on-orbit propellant screen collector surface and tension storage tank |
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| Publication number | Publication date |
|---|---|
| CN102848089B (en) | 2016-05-11 |
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