CN112161524A - Explosion bolt resistant to space ultralow-temperature environment - Google Patents
Explosion bolt resistant to space ultralow-temperature environment Download PDFInfo
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- CN112161524A CN112161524A CN202010868915.XA CN202010868915A CN112161524A CN 112161524 A CN112161524 A CN 112161524A CN 202010868915 A CN202010868915 A CN 202010868915A CN 112161524 A CN112161524 A CN 112161524A
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- detonator
- bolt
- push rod
- piston push
- explosive
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- 238000004880 explosion Methods 0.000 title claims abstract description 25
- 239000002360 explosive Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 7
- 229920005560 fluorosilicone rubber Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- 238000005474 detonation Methods 0.000 abstract description 6
- 239000010409 thin film Substances 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/006—Explosive bolts; Explosive actuators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention relates to an explosion bolt resistant to a space ultralow-temperature environment. The detonator seat is provided with a fire transfer hole, when in separation, the thin film bridge with an igniter works to detonate the detonator through the detonator seat phi 1mm fire transfer hole, the explosive in the detonator is ignited and then outputs detonation to push the piston push rod to move, the piston push rod moves rightwards to cut off the separation surface of the bolt body, the bolt body is separated into two parts, and the bolt head flies out rightwards. In the separation process, the piston push rod compresses the sealing disc rightwards, and the sealing disc seals the redundant tail end inside the explosion bolt. The bolt body and the detonator seat made of the titanium alloy TC4 material have no low-temperature brittleness, and the shock resistance at low temperature is better.
Description
Technical Field
The invention relates to a pollution-free explosion bolt resistant to space and ultralow temperature (below-120 ℃), which is particularly suitable for structural connection and unlocking of space major equipment needing to face space extreme environments, such as high orbit satellites, mars detection and the like.
Background
The explosive bolt is used as a connecting and separating firer actuating device, is widely applied to the aerospace industry in China, and realizes the mutual connection and separation of separating parts with different structures.
With the increasing development of aerospace technology and aerospace firer technology, a large number of firer devices are used in various space activities such as foreign carrier rockets, high orbit satellites, space stations, moon exploration, mars exploration and the like; in China, a plurality of spacecraft use initiating explosive devices to complete various functions. Such as: exploration series satellites, soldier series satellites, wind and cloud series miniature, Shenzhou series manned spacecrafts, Tiangong I, lunar exploration projects and the like.
The research of the fire-actuated device in the space-resistant environment aspect, the initiation is earlier under the traction of the aerospace technology in foreign countries, particularly in the United states, and the fire-actuated device is in the leading position in the aspects of failure mechanism research, new material application, space environment protection and the like. China starts late but develops rapidly, but has a certain gap with the foreign advanced level.
At present, a great deal of research on the space environment and space protection of the space aircraft is carried out in China, but the research on space-resistant ultralow-temperature initiating explosive devices is not carried out in a targeted manner, and no research on ultralow-temperature (below-120 ℃) explosion-resistant bolts is carried out.
The main structural form of the existing pollution-free explosion bolt is a shear type weakening groove type bolt, the use temperature of the existing pollution-free explosion bolt on various mature models is above-70 ℃, and the use performance of the existing pollution-free explosion bolt under the ultralow temperature environment condition below-120 ℃ is not checked.
The shear type explosive bolt consists of a clapboard explosive loading body, an O-shaped sealing ring, a bolt body, a pressing ring, a piston push rod and a sealing disc. The working principle is that after the initiation element works, the clapboard explosive-containing body is detonated, and after the clapboard explosive-containing body works, high-temperature and high-pressure gas is output to push the piston push rod to move, so that the bolt body is separated from a preset part. The material of the bolt body and the material of the baffle charging body are 13Cr11Ni2W2 MoV.
A weakened slot-type explosive bolt is described in the text "certain small explosive bolt design (initiating explosive device 2014, 4 th 2014, 8 th month). The explosion bolt tightly connects the two separated parts together through threads, and after the ignition part receives given initial electric energy, the electric energy is converted into heat energy through the bridge wire to heat surrounding ignition powder; the ignition powder is burnt, the detonator is ignited by flame through the isolation and gas-closing mechanism, the detonator explodes to generate detonation waves, and the bolt body is burst at the weakening groove by utilizing the instantaneous high pressure of the detonation waves. The bolt body adopts a V-shaped weakening groove structure, and the material is selected from 30CrMnSiA alloy steel.
In the existing explosive bolt technology, the bolt body material 13Cr11Ni2W2MoV or 30CrMnSiA has low-temperature brittleness, and the risk of structural damage during separation exists in a severe low-temperature environment. Before the invention, an example that the existing pollution-free shear type explosive bolt is subjected to heat preservation for 2 hours at the temperature of-120 ℃ and then is ignited to disintegrate is presented, a clapboard explosive-containing body and a bolt body in the structure are cracked and disintegrated under the impact generated during separation, and the problem of ultralow temperature resistance of the pollution-free explosive bolt is urgently needed to be solved. .
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the explosion bolt overcomes the defect of insufficient ultralow temperature resistance of the existing explosion bolt, provides an explosion bolt resistant to a space ultralow temperature environment, can be reliably separated and unlocked at ultralow temperature (below minus 120 ℃), and can ensure complete structure and no pollution.
The technical solution of the invention is as follows:
an explosion bolt resistant to space ultralow temperature environment comprises an igniter, a detonator seat, a detonator, a pressing helicoidal ring, a piston push rod, a sealing disc, a bolt body, a first O-shaped ring, a paper gasket, a plug, a second O-shaped ring and a third O-shaped ring;
two third O-shaped rings are arranged in two annular grooves axially arranged on the piston push rod, a second O-shaped ring is arranged on the step surface of the bolt body, a first O-shaped ring is arranged on the step surface of the detonator seat, a sealing disc is sleeved on the small end of the piston push rod and is arranged at the bottom of the inner hole at the large end of the bolt body together with the piston push rod, and the piston push rod is tightly pressed on a press;
after the distance from the left end face of the piston push rod to the left end face of the bolt body is measured to meet the preset requirement, screwing in a pressing ring to fix the piston push rod; sequentially arranging paper gaskets and detonators at detonator mounting holes arranged on the detonator seat, and adjusting the distance between the end surface of the detonator and the turned edge step surface of the detonator seat through a plurality of paper gaskets to enable the end surface of the detonator to be flush with the detonator seat and to be turned edge and closed;
the large end of the bolt body is screwed into a detonator seat which is provided with a paper gasket and a detonator, the detonator seat is contacted with a piston push rod, and an igniter is screwed into the detonator seat; and finally, screwing a plug for moisture protection at the internal thread at one end of the bolt head of the bolt body.
Furthermore, a fire transfer hole is formed in the detonator seat, when the detonator is separated, an igniter works to detonate the detonator through the fire transfer hole of the detonator seat, explosive in the detonator is ignited and then outputs detonation to push a piston push rod to move, the piston push rod moves rightwards to cut off a separation surface of a bolt body, the bolt body is separated into two parts, and the bolt head flies out rightwards; in the separation process, the piston push rod compresses the sealing disc rightwards, and the sealing disc seals the redundant tail end inside the explosion bolt.
Furthermore, a hollow frustum-shaped sealing disc is sleeved on the small end of the piston push rod with the conical surface bottom facing outwards.
Further, a first O-ring mounted on the step surface of the detonator seat is used for sealing between the igniter and the detonator seat.
Further, a second O-ring mounted on the stepped surface of the bolt body is used for sealing between the detonator seat and the bolt body.
Further, the igniter adopts a film bridge belt igniter.
Further, the bolt body and the detonator seat are made of titanium alloy TC 4.
Furthermore, the sealing disc, the first O-shaped ring, the second O-shaped ring and the third O-shaped ring are made of F-115 fluorosilicone rubber.
Furthermore, a fire transfer hole arranged on the detonator seat is phi 1mm, and a detonator mounting hole is phi 7 mm.
Further, the explosive bolt can work below-120 ℃.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention uses the bolt body and the detonator seat made of titanium alloy TC4 material, the conventional bolt body material 13Cr11Ni2W2MoV, 30CrMnSiA and the like, the partition plate body material is 13Cr11Ni2W2MoV, compared with the titanium alloy material 13Cr11Ni2W2MoV, 30CrMnSiA and the like, the partition plate has no low-temperature brittleness and better impact resistance at low temperature, can ensure the complete structure of the explosive bolt under the impact generated by the explosion and combustion of the medicament during separation, and can ensure the complete structure of the explosive bolt with 3 times of charge of 0.8 and 3 times of charge of 1.2 at the low temperature of minus 120 ℃ in an ignition test, and the complete structure of the explosive bolt after separation is ensured.
(2) The invention adopts the igniter to detonate the detonator through the detonator seat phi 1mm fire-transfer hole, the work detonation of the detonator generates shock waves to push the piston push rod, and the working principle that the existing pollution-free shear type explosive bolt generates fuel gas to push the piston push rod through the partition plate explosive-charging body is replaced; the risk that the impact toughness of the existing pollution-free explosive bolt 13Cr11Ni2W2MoV shell is suddenly reduced at low temperature and the shell is cracked is avoided. The structure is verified by 0.8-time charging and 1.2-time charging-120 ℃ low-temperature ignition tests, and all the components are complete after ignition.
(3) Compared with the common O-shaped ring, the F-115 fluorosilicone rubber O-shaped ring with a special mark is proved by the test of the environment below 120 ℃ below zero, and the sealing failure can not occur at low temperature. O-shaped rings are adopted to seal between the igniter and the detonator seat and between the detonator seat and the bolt body. Establish two pass O shape circle motion seal on the piston push rod, explode the medicament during the separation, gas and residue after the burning are sealed more effectively inside explosion bolt body residual, reduced the risk of limit low temperature O shape circle seal failure, simultaneously avoid special environment on the space model under (produce the hydrogen atmosphere after the connector work that drops like manned zero second of lunar year) the tail end to produce the mars and cause the influence, through experimental verification, this explosion bolt separates under the hydrogen concentration is 33% environment, can not make the hydrogen burning.
(4) The thin film bridge belt igniter is used, the requirements of miniaturization, sealing design and safety are comprehensively considered, and the thin film bridge belt igniter has the advantages of good sealing performance, excellent safety, small structural size and small size of an electrical interface.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic structural diagram after unlocking.
Detailed Description
The invention provides a pollution-free explosive bolt with ultra-low temperature resistance in space, aiming at the problem that the existing explosive bolt technology has the risk of structural damage during separation in a severe low-temperature environment (below minus 120 ℃).
As shown in figures 1 and 2, the pollution-free explosion bolt capable of resisting the space ultra-low temperature can work below-120 ℃, and comprises a film bridge belt igniter 1, a detonator seat 2, a detonator 3, a pressing spiral ring 4, a piston push rod 5, a sealing disc 6, a bolt body 7, an O-shaped ring I8, a paper gasket 9, a piston push rod 5, a plug 11, an O-shaped ring II 12 and an O-shaped ring III 13;
two O-shaped rings III 13 are arranged in two annular grooves which are axially arranged along the piston push rod 5, an O-shaped ring II 12 is arranged on the step surface of the bolt body 7, an O-shaped ring I8 is arranged on the step surface of the detonator seat 2, the first O-shaped ring 8 is used for sealing between the igniter 1 and the detonator seat 2, and the second O-shaped ring 12 is used for sealing between the detonator seat 2 and the bolt body 7.
The bottom of the conical surface of the hollow frustum-shaped sealing disc 6 is outwards sleeved on the small end of the piston push rod 5. And the piston push rod 5 and the large end of the bolt body 7 are arranged at the bottom of the inner hole of the large end, and the piston push rod 5 is pressed tightly on a press machine.
After the distance from the left end face of the piston push rod to the left end face of the bolt body is measured to meet the requirement, the piston push rod 5 is fixed by screwing the pressing screw ring 4, and the piston push rod 5 is prevented from moving due to vibration in the transportation or use process of the explosive bolt.
The paper gaskets 9 and the detonator 3 are sequentially arranged at the position phi 7mm of the detonator mounting hole of the detonator seat 2, the distance between the end surface of the detonator and the turned edge step surface of the detonator seat 2 is adjusted through 1-2 paper gaskets 9, the end surface of the detonator is leveled, and the turned edge is closed after leveling.
The left end of the bolt body is screwed into the detonator seat 2 which is provided with the paper gasket 9 and the detonator 3, and then the film bridge belt igniter 1 is screwed on the detonator seat 2. Finally, a plug 11 with the function of moisture protection is screwed on the internal thread at the right end of the bolt body 7.
The detonator seat 2 is provided with a fire transfer hole, when in separation, the thin film bridge belt igniter 1 works to detonate the detonator 3 through the detonator seat phi 1mm fire transfer hole, the explosive in the detonator 3 is ignited and then output to detonate, the piston push rod 5 is pushed to move, the piston push rod 5 moves rightwards to cut off the separation surface of the bolt body, the bolt body 7 is separated into two parts, and the bolt head flies out rightwards. In the separation process, the piston push rod 5 compresses the sealing disc rightwards, and the sealing disc seals the redundant tail end inside the explosion bolt. The thin film bridge belt igniter is used, the requirements of miniaturization, sealing design and safety are comprehensively considered, and the thin film bridge belt igniter has the advantages of good sealing performance, excellent safety, small structural size and small size of an electrical interface.
The invention uses the bolt body and the detonator seat made of titanium alloy TC4 material, the conventional bolt body material 13Cr11Ni2W2MoV, 30CrMnSiA and the like, the partition plate body material is 13Cr11Ni2W2MoV, compared with the titanium alloy material 13Cr11Ni2W2MoV, 30CrMnSiA and the like, the partition plate has no low-temperature brittleness and better impact resistance at low temperature, can ensure the complete structure of the explosive bolt under the impact generated by the explosion and combustion of the medicament during separation, and can ensure the complete structure of the explosive bolt with 3 times of charge of 0.8 and 3 times of charge of 1.2 at the low temperature of minus 120 ℃ in an ignition test, and the complete structure of the explosive bolt after separation is ensured.
The invention adopts the igniter to detonate the detonator through the detonator seat phi 1mm fire-transfer hole, the work detonation of the detonator generates shock waves to push the piston push rod, and the working principle that the existing pollution-free shear type explosive bolt generates fuel gas to push the piston push rod through the partition plate explosive-charging body is replaced; the risk that the impact toughness of the existing pollution-free explosive bolt 13Cr11Ni2W2MoV shell is suddenly reduced at low temperature and the shell is cracked is avoided. The structure is verified by 0.8-time charging and 1.2-time charging-120 ℃ low-temperature ignition tests, and all the components are complete after ignition.
Compared with the common O-shaped ring, the special F-115 fluorosilicone rubber O-shaped ring (the sealing disc, the O-shaped ring I, the O-shaped ring II and the O-shaped ring III are made of the material) is adopted in the invention, and the sealing failure can not occur at low temperature which is verified by the environmental test below 120 ℃. O-shaped rings are adopted to seal between the igniter and the detonator seat and between the detonator seat and the bolt body. Establish two way III motion seals of O shape circle on the piston push rod, explode the medicament during the separation, gas and residue after the burning are sealed more effectively inside explosion bolt body residual, reduced the risk of limit low temperature O shape circle sealing failure, simultaneously avoid special environment on the space model under (if the carrier goes on the month zero second and drops the connector work and produce the hydrogen atmosphere after) the tail end and produce the mars and cause the influence, through experimental verification, this explosion bolt separates under the hydrogen concentration is 33% environment, can not make the hydrogen burning.
The parameters of the explosive bolt of the invention are shown in table 1.
TABLE 1 design parameters table
The performance indexes of the explosive bolt of the invention and the existing pollution-free explosive bolt are compared and shown in table 2.
TABLE 2 comparison table
Compared with the prior art, the explosion bolt provided by the invention can resist ultralow temperature (below-120 ℃) and has stability at ultralow temperature. The device is more suitable for structural connection and unlocking of space key equipment which needs to face extreme space environments such as high orbit satellites, Mars detection and the like.
Claims (10)
1. The utility model provides an explosion bolt of resistant space ultra-low temperature environment which characterized in that: the device comprises an igniter (1), a detonator seat (2), a detonator (3), a compression helicoidal ring (4), a piston push rod (5), a sealing disc (6), a bolt body (7), a first O-shaped ring (8), a paper gasket (9), a plug (11), a second O-shaped ring (12) and a third O-shaped ring (13);
two third O-shaped rings (13) are arranged in two annular grooves axially arranged on the piston push rod (5), a second O-shaped ring (12) is arranged on the step surface of the bolt body (7), a first O-shaped ring (8) is arranged on the step surface of the detonator seat (2), a sealing disc (6) is sleeved on the piston push rod (5), and is arranged at the bottom of a large-end inner hole of the bolt body (7) together with the piston push rod (5), and the piston push rod (5) is tightly pressed on a press machine;
after the distance from the left end face of the piston push rod (5) to the left end face of the bolt body (7) is measured to meet the preset requirement, the piston push rod (5) is fixed by screwing in the pressing screw ring (4); sequentially arranging paper gaskets (9) and the detonators (3) at detonator mounting holes arranged on the detonator seat (2), and adjusting the distance between the end surface of the detonator (3) and the turned edge step surface of the detonator seat (2) through a plurality of paper gaskets (9) to enable the end surface of the detonator (3) to be flush with the detonator seat (2) and to be turned edge and closed up;
a detonator seat (2) which is provided with a paper gasket (9) and a detonator (3) is screwed into the large end of the bolt body (7), the detonator seat (2) is contacted with a piston push rod (5), and an igniter (1) is screwed into the detonator seat (2); finally, a plug (11) for moisture protection is screwed on the inner thread at one end of the bolt head of the bolt body (7).
2. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the detonator seat (2) is provided with a fire transfer hole, when the detonator (3) is detonated by the igniter (1) through the detonator seat fire transfer hole during separation, the explosive in the detonator (3) is ignited and then output to detonate, the piston push rod (5) is pushed to move, the piston push rod (5) moves rightwards to cut off a separation surface of the bolt body (7), the bolt body (7) is separated into two parts, and the bolt head flies out rightwards; in the separation process, the piston push rod (5) compresses the sealing disc (6) rightwards, and the sealing disc (6) seals the excess at the tail end inside the explosive bolt.
3. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: a hollow frustum-shaped sealing disc (6), the bottom of the conical surface of which faces outwards and is sleeved on the small end of the piston push rod (5).
4. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the first O-shaped ring (8) arranged on the step surface of the detonator seat (2) is used for sealing between the igniter (1) and the detonator seat (2).
5. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: and a second O-shaped ring (12) arranged on the step surface of the bolt body (7) is used for sealing between the detonator seat (2) and the bolt body (7).
6. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the igniter (1) adopts a film bridge belt igniter.
7. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the bolt body (7) and the detonator seat (2) are made of titanium alloy TC 4.
8. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the sealing disc (6), the first O-shaped ring (8), the second O-shaped ring (12) and the third O-shaped ring (13) are made of F-115 fluorosilicone rubber.
9. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the fire transfer hole arranged on the detonator seat (2) is phi 1mm, and the detonator mounting hole is phi 7 mm.
10. The explosive bolt capable of resisting space ultralow temperature environment according to claim 1, characterized in that: the explosive bolt can work below-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868915.XA CN112161524A (en) | 2020-08-25 | 2020-08-25 | Explosion bolt resistant to space ultralow-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868915.XA CN112161524A (en) | 2020-08-25 | 2020-08-25 | Explosion bolt resistant to space ultralow-temperature environment |
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| Publication Number | Publication Date |
|---|---|
| CN112161524A true CN112161524A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010868915.XA Pending CN112161524A (en) | 2020-08-25 | 2020-08-25 | Explosion bolt resistant to space ultralow-temperature environment |
Country Status (1)
| Country | Link |
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| CN (1) | CN112161524A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060027083A1 (en) * | 2004-07-21 | 2006-02-09 | Agency For Defense Development | Explosive bolt |
| CN204253542U (en) * | 2014-09-30 | 2015-04-08 | 北方特种能源集团有限公司西安庆华公司 | A kind of split type annular shears high strength pretension bolt |
| CN107191459A (en) * | 2017-06-09 | 2017-09-22 | 北京空间飞行器总体设计部 | A kind of strong contained explosion bolt device |
| CN107962356A (en) * | 2017-11-25 | 2018-04-27 | 中国地质大学（北京） | A kind of preparation method of space flight titanium alloy TC 4 surface anti-friction wear-resistant strengthening layer |
-
2020
- 2020-08-25 CN CN202010868915.XA patent/CN112161524A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060027083A1 (en) * | 2004-07-21 | 2006-02-09 | Agency For Defense Development | Explosive bolt |
| CN204253542U (en) * | 2014-09-30 | 2015-04-08 | 北方特种能源集团有限公司西安庆华公司 | A kind of split type annular shears high strength pretension bolt |
| CN107191459A (en) * | 2017-06-09 | 2017-09-22 | 北京空间飞行器总体设计部 | A kind of strong contained explosion bolt device |
| CN107962356A (en) * | 2017-11-25 | 2018-04-27 | 中国地质大学（北京） | A kind of preparation method of space flight titanium alloy TC 4 surface anti-friction wear-resistant strengthening layer |
Non-Patent Citations (6)
| Title |
|---|
| 刘大华等: "《合成橡胶工业手册》", 31 December 1991, 化学工业出版社 * |
| 杨三斌: "桥丝式爆炸螺栓防静电设计与性能验证", 《装备环境工程》 * |
| 王传克: "卫星用无污染爆炸螺栓", 《中国空间科学技术》 * |
| 蒋瑞岗: "战术导弹级间分离新型方案探讨", 《现代防御技术》 * |
| 薛园园等: "一种无污染分离螺栓的设计优化", 《火工品》 * |
| 郭春洁等: "《金属工艺学简明教程》", 30 September 2017, 西北工业大学出版社 * |
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