CN105458058A - Method for decreasing or eliminating interlayer gaps of multi-layer corrugated pipe - Google Patents
Method for decreasing or eliminating interlayer gaps of multi-layer corrugated pipe Download PDFInfo
- Publication number
- CN105458058A CN105458058A CN201410459818.XA CN201410459818A CN105458058A CN 105458058 A CN105458058 A CN 105458058A CN 201410459818 A CN201410459818 A CN 201410459818A CN 105458058 A CN105458058 A CN 105458058A
- Authority
- CN
- China
- Prior art keywords
- metal pipe
- magnetic field
- diameter
- interlayer spacings
- bellows
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to the technical fields of electromagnetic formation and special welding and particularly discloses a method for decreasing or eliminating interlayer gaps of a multi-layer corrugated pipe. The method comprises the steps that 1, a metal pipe suitable for magnetic pulse machining is selected; 2, a proper interlayer gap eliminating way is selected according to the requirement of the subsequent product machining procedure; 3, the inner diameter or the outer diameter of the metal pipe to be machined is measured, and the dimension of a required mold is determined; 4, different magnetic pulse coils are used according to the pipe diameter, the thickness and the material of the metal pipe to be machined, and the coils are installed inside or outside the corrugated pipe, and the two ends of the magnetic pulse coils are connected to the two electrodes of magnetic pulse equipment; and 5, the corrugated pipe is deformed through discharging of the magnetic pulse equipment, and the interlayer gaps of the multi-layer corrugated pipe are eliminated. By the adoption of the method for decreasing or eliminating the interlayer gaps of the multi-layer corrugated pipe, the technical purpose of welding the multi-layer corrugated pipe used for an airspace engine is achieved, and the welding quality is greatly improved.
Description
Technical field
The invention belongs to electro-magnetic forming and Special Welding Technique field, be specifically related to a kind of method reducing or eliminate multiply bellows interlayer spacings.
Background technology
Bellows is by thin wall multi-layer pipe manufacturer, and main manufacture has the parts of shock-absorbing function, and be mainly used in visual plant and important instrument, as airspace engine, automobile, power station etc. have the occasion of judder, material mostly is stainless steel.
Such as, use liquid hydrogen, liquid oxygen propellant during airspace engine work, wherein for carrying the pipeline of liquid hydrogen, liquid oxygen cryogenic propellant, needing to bear high vibration and waving.In the process manufacturing this pipeline of processing, need the bellows that application thin-walled multilayer pipe is made, wherein before end portion and weld need multilayer welding to be connected into one deck, the technique of employing is called roll welding, in the process of roll welding, due to the interlayer spacings of multilayer pipe, in welding process, often occur " cavity " defect at interlayer, this " cavity " is serious quality problems, must eliminate, the existing main mechanical means that adopts removes rear repair welding." cavity " removing method eliminates interlayer spacings exactly the most reliably, and prior art all cannot realize.
Electromagnetic forming technique utilizes electromagnetic principle by electric energy abrupt release after capacitor savings, and be converted into a kind of manufacturing technology that electromagnetic force makes it deform in the metal material that electric conductivity is good, there is the advantages such as high speed, large, pollution-free, the little resilience of energy, energy-saving and environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of method reducing or eliminate multiply bellows interlayer spacings, it eliminates thin wall multi-layer metal tube interlayer spacings by magnetic field impulse, thus reaches the object reducing weld defect.
Technical scheme of the present invention is as follows: a kind of method reducing or eliminate multiply bellows interlayer spacings, the method specifically comprises the steps:
Step 1, selection are applicable to the metal pipe material carrying out magnetic field impulse processing;
Step 2, requirement according to product subsequent processing operations, select the mode of suitable elimination interlayer spacings;
Step 3, measure the size of metal pipe material internal diameter to be processed or external diameter, determine die needed size;
Step 4, the pipe diameter size according to metal pipe material to be processed, thickness, material, select different magnetic field impulse coils, be arranged in or beyond bellows by coil, and magnetic field impulse coil two ends are connected to the two poles of the earth of magnetic field impulse equipment;
Step 5, utilize magnetic field impulse equipment to discharge bellows be out of shape, elimination bellows interlayer spacings.
The metal pipe material being applicable to carrying out magnetic field impulse processing in described step 1 comprises aluminium, copper alloy, stainless steel multilayer metal pipe material.
The thickness in monolayer of described multiple layer metal tubing is 0.1 ~ 0.5mm, and Multilayer metal tube diameter is 100 ~ 200mm, and length is 10 ~ 20mm, 2 ~ 3 layers, and metal pipe material gross thickness is at below 1.5mm.
The mode eliminating bellows interlayer spacings in described step 2 comprises undergauge mode and bulging mode, wherein, if need to ensure metal pipe internal diameter size, then adopts and inwardly executes stressed undergauge mode; If need to ensure metal tube outer diameter size, then adopt and outwards execute stressed bulging mode.
Size die needed in described step 3 determined according to the size of metal pipe material internal diameter to be processed or external diameter, wherein, adopt the diameter 0.5mm-0.8mm less of part of bulging mode mould, adopt the diameter 0.1mm-0.3mm larger than part of undergauge mode mould.
In described step 5, the voltage range of magnetic field impulse equipment electric discharge is 5kV ~ 20kV, and discharge energy is at 1kJ ~ 25kJ, and discharge time is 2 ~ 3 times.
Remarkable result of the present invention is: a kind of method reducing or eliminate multiply bellows interlayer spacings of the present invention, solves the technical barrier of airspace engine multiply bellows welding used, significantly improves welding quality.
Accompanying drawing explanation
Fig. 1 adopts undergauge mode to eliminate the theory structure schematic diagram in gap between multilayer thin-walled tube layer in a kind of method reduced or eliminate multiply bellows interlayer spacings of the present invention;
Fig. 2 adopts bulging mode to eliminate the theory structure schematic diagram in gap between multilayer thin-walled tube layer in a kind of method reduced or eliminate multiply bellows interlayer spacings of the present invention.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of method reducing or eliminate multiply bellows interlayer spacings, the method specifically comprises the steps:
Step 1, selection are applicable to the metal pipe material carrying out magnetic field impulse processing;
Selection comprises aluminium, copper alloy, stainless steel multilayer metal pipe material, and wherein, the thickness in monolayer of multiple layer metal tubing is 0.1 ~ 0.5mm, and Multilayer metal tube diameter is 100 ~ 200mm, and length is 10 ~ 20mm, 2 ~ 3 layers, and metal pipe material gross thickness is at below 1.5mm;
Step 2, requirement according to product subsequent processing operations, select the mode of suitable elimination interlayer spacings;
According to the requirement of product subsequent processing operations, if need to ensure metal pipe internal diameter size, then adopt as shown in Figure 1 inwardly execute stressed undergauge mode; If need to ensure metal tube outer diameter size, then adopt as shown in Figure 2 outwards execute stressed bulging mode;
Step 3, measure the size of metal pipe material internal diameter to be processed or external diameter, determine die needed size;
Measure the size of metal pipe material internal diameter to be processed or external diameter, determine die needed size, wherein, adopt the diameter 0.5mm-0.8mm less of part of bulging mode mould, adopt the diameter 0.1mm-0.3mm larger than part of undergauge mode mould;
Step 4, the pipe diameter size according to metal pipe material to be processed, thickness, material, select different magnetic field impulse coils, be arranged on outside bellows by coil, and magnetic field impulse coil two ends are connected to the two poles of the earth of magnetic field impulse equipment;
Step 5, utilize magnetic field impulse equipment to discharge bellows be out of shape, eliminates bellows interlayer spacings, wherein, the voltage range that magnetic field impulse equipment discharges is 5kV ~ 20kV, and discharge energy is at 1kJ ~ 25kJ, and discharge time is 2 ~ 3 times.
Claims (6)
1. reduce or eliminate a method for multiply bellows interlayer spacings, it is characterized in that: the method specifically comprises the steps:
Step 1, selection are applicable to the metal pipe material carrying out magnetic field impulse processing;
Step 2, requirement according to product subsequent processing operations, select the mode of suitable elimination interlayer spacings;
Step 3, measure the size of metal pipe material internal diameter to be processed or external diameter, determine die needed quantity and size;
Step 4, the pipe diameter size according to metal pipe material to be processed, thickness, material, select different magnetic field impulse coils, be arranged in or beyond bellows by coil, and magnetic field impulse coil two ends are connected to the two poles of the earth of magnetic field impulse equipment;
Step 5, utilize magnetic field impulse equipment to discharge bellows be out of shape, elimination bellows interlayer spacings.
2. a kind of method reducing or eliminate multiply bellows interlayer spacings according to claim 1, is characterized in that: the metal pipe material being applicable to carrying out magnetic field impulse processing in described step 1 comprises aluminium, copper alloy, stainless steel multilayer metal pipe material.
3. a kind of method reducing or eliminate multiply bellows interlayer spacings according to claim 2, it is characterized in that: the thickness in monolayer of described multiple layer metal tubing is 0.1 ~ 0.5mm, Multilayer metal tube diameter is 100 ~ 200mm, length is 10 ~ 20mm, 2 ~ 3 layers, metal pipe material gross thickness is at below 1.5mm.
4. a kind of method reducing or eliminate multiply bellows interlayer spacings according to claim 1, it is characterized in that: the mode eliminating bellows interlayer spacings in described step 2 comprises undergauge mode and bulging mode, wherein, if need to ensure metal pipe internal diameter size, then adopt and inwardly execute stressed undergauge mode; If need to ensure metal tube outer diameter size, then adopt and outwards execute stressed bulging mode.
5. a kind of method reducing or eliminate multiply bellows interlayer spacings according to claim 1, it is characterized in that: size die needed in described step 3 determined according to the size of metal pipe material internal diameter to be processed or external diameter, wherein, adopt the diameter 0.5mm-0.8mm less of part of bulging mode mould, adopt the diameter 0.1mm-0.3mm larger than part of undergauge mode mould.
6. a kind of method reducing or eliminate multiply bellows interlayer spacings according to claim 1, is characterized in that: in described step 5, the voltage range of magnetic field impulse equipment electric discharge is 5kV ~ 20kV, and discharge energy is at 1kJ ~ 25kJ, and discharge time is 2 ~ 3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459818.XA CN105458058B (en) | 2014-09-11 | 2014-09-11 | A kind of method for reducing or eliminating multilayer corrugated pipe interlayer spacings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459818.XA CN105458058B (en) | 2014-09-11 | 2014-09-11 | A kind of method for reducing or eliminating multilayer corrugated pipe interlayer spacings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105458058A true CN105458058A (en) | 2016-04-06 |
| CN105458058B CN105458058B (en) | 2017-11-28 |
Family
ID=55596465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410459818.XA Active CN105458058B (en) | 2014-09-11 | 2014-09-11 | A kind of method for reducing or eliminating multilayer corrugated pipe interlayer spacings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105458058B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964684A (en) * | 2017-03-31 | 2017-07-21 | 华中科技大学 | A kind of complex multi-step local plastic electromagnetic forming method suitable for sheet material workpiece |
| CN114192603A (en) * | 2021-12-14 | 2022-03-18 | 上海航天精密机械研究所 | Method for controlling interlayer redundancy and eliminating interlayer gap of multilayer metal corrugated pipe |
| CN115870366A (en) * | 2022-10-31 | 2023-03-31 | 江苏恒高电气制造有限公司 | Coaxial forming method for stainless steel multilayer corrugated pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69524496T2 (en) * | 1994-08-02 | 2002-05-16 | Inst Francais Du Petrole | Method and device for producing a metallic corrugated tube |
| CN101653803A (en) * | 2008-08-22 | 2010-02-24 | 首都航天机械公司 | Corrugated tube port magnetic-pulse precision corrector |
| CN101905375A (en) * | 2010-07-29 | 2010-12-08 | 哈尔滨工业大学 | Magnetic pulse connecting method and joint structure for thin-wall metal pipelines |
| CN103861933A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Corrugated pipe forming device and corrugated pipe machined through corrugated pipe forming device |
-
2014
- 2014-09-11 CN CN201410459818.XA patent/CN105458058B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69524496T2 (en) * | 1994-08-02 | 2002-05-16 | Inst Francais Du Petrole | Method and device for producing a metallic corrugated tube |
| CN101653803A (en) * | 2008-08-22 | 2010-02-24 | 首都航天机械公司 | Corrugated tube port magnetic-pulse precision corrector |
| CN101905375A (en) * | 2010-07-29 | 2010-12-08 | 哈尔滨工业大学 | Magnetic pulse connecting method and joint structure for thin-wall metal pipelines |
| CN103861933A (en) * | 2014-04-01 | 2014-06-18 | 湖南大学 | Corrugated pipe forming device and corrugated pipe machined through corrugated pipe forming device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964684A (en) * | 2017-03-31 | 2017-07-21 | 华中科技大学 | A kind of complex multi-step local plastic electromagnetic forming method suitable for sheet material workpiece |
| CN106964684B (en) * | 2017-03-31 | 2019-05-31 | 华中科技大学 | A kind of complex multi-step local plastic electromagnetic forming method suitable for sheet material workpiece |
| CN114192603A (en) * | 2021-12-14 | 2022-03-18 | 上海航天精密机械研究所 | Method for controlling interlayer redundancy and eliminating interlayer gap of multilayer metal corrugated pipe |
| CN115870366A (en) * | 2022-10-31 | 2023-03-31 | 江苏恒高电气制造有限公司 | Coaxial forming method for stainless steel multilayer corrugated pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105458058B (en) | 2017-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102744310B (en) | Magnetic pulse forming device and method of bimetal composite pipe | |
| CN102806262B (en) | Method for axial loading to assist bulging of magnetic pulse pipe | |
| CN103861930B (en) | A kind of magnetic pulse formation device and method of aluminum alloy plate materials minor diameter flanging bore | |
| Yu et al. | Electromagnetic forming of aluminum circular tubes into square tubes: experiment and numerical simulation | |
| CN104475479B (en) | A kind of technique utilizing swaging techniques to prepare small-diameter thick-walled metal tube | |
| CN205124106U (en) | Compact D -D neutron generator | |
| CN101386042A (en) | Method for increasing the circular degree of the metal thin-walled cylinder using pulse magnetic pressure | |
| CN102773398B (en) | Method for forging slender and thick-walled pipe fittings | |
| CN105458058A (en) | Method for decreasing or eliminating interlayer gaps of multi-layer corrugated pipe | |
| WO2012103639A1 (en) | High performance induction plasma torch | |
| CN105047356A (en) | Solenoid coil for magnetic pulse forming | |
| CN105407621A (en) | Compact type D-D neutron generator | |
| CN106734568B (en) | Plate and pipes connecting method and device based on magnetic pulse formation | |
| CN105013960A (en) | Tubular product magnetic pulse drawing-down shaping device and method based on bitter coil | |
| CN106270104A (en) | A kind of magnetic field impulse hole flanging formation method of housing component | |
| CN104607512B (en) | Bend forming method of large-angle pipeline with high precision, large pipe diameter and small bending diameter ratio | |
| CN208466939U (en) | A kind of variable cross-section metal pipe material Electromagnetic bulging device | |
| CN105013921A (en) | Magnetic pulse forming method for lining bimetal composite pipe | |
| CN204320943U (en) | A kind of spiral steel pipe bottlenecking rounding die | |
| CN101693260B (en) | Method for drawing high-precision aluminum pipe | |
| Xiong et al. | A dual-coil method for electromagnetic attraction forming of sheet metals | |
| CN103433347B (en) | A kind of inductor of subregion progressive molding composite bimetal pipe | |
| TENG et al. | Wrinkling behavior of hydro bending of carbon steel/Al-alloy bi-layered tubes | |
| CN102699205A (en) | Fixed outer diameter combined die for welded steel tubes | |
| CN105047351A (en) | Plate coil for magnetic pulse forming |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Capital Aerospace Machinery Co., Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Capital Aerospace Machinery Company |