CN1205923A - Method for reinforcing structural members - Google Patents
Method for reinforcing structural members Download PDFInfo
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- CN1205923A CN1205923A CN 98116306 CN98116306A CN1205923A CN 1205923 A CN1205923 A CN 1205923A CN 98116306 CN98116306 CN 98116306 CN 98116306 A CN98116306 A CN 98116306A CN 1205923 A CN1205923 A CN 1205923A
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- flexible member
- resin
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Abstract
A method for reinforcing a selected portion of a structural part utilizes a flexible tube having a unexpanded, preferably thermally expandable resin sheath. The sheath may be limited to a selected region along the length of the flexible tube. The flexible tube is inserted through a curved passage and conforms to the geometry of the part to be reinforced. After the portion of the tube having the sheath reaches the desired location, the tube is secured in place. Upon heating, the resin expands to several times its original volume and fills the structural cavity only at that region.
Description
The application is according to the provisional application series number No.60/053264 of registration on July 21st, 1997.
The reinforcement of relate generally to hollow structural members of the present invention more more specifically, then relates to the reinforcement of the structure with enclosed area, and this enclosed area exists special in problem.
In recent years, many factors force and are doing basic change aspect the method for vehicle structure design.They comprise, must satisfy impact strength and the saving of fuel standard that improves constantly and produce the competitive vehicle of its price in the world market.These requirements usually seem contradictory each other.For example, impact strength in most cases can be simply by the thickness of increasing steel or by using high strength steel to reach.But this method will increase the weight and/or the cost of vehicle usually.Though lightweight resin can be used for the whole cavity of interstitital texture member now, so that bigger intensity to be provided, these materials are all expensive, and they will undesirably strengthen the cost of vehicle therefore a large amount of uses.
The present invention at first adopts a new method, it strengthens structure member by adopting the important zone of the local reinforcement of microsphere filled thermal expansion resin, for example: have the composite gate beam of resin-based fuse, the occupied place of this fuse be no more than metal tube fuse 1/3rd; Hollow laminated beam is characterized by it and has the ratio of high rigidity and quality and have the outside that separates with pipe in thin structural foamed plastic layer and, and a W shape carrier inserts reinforce, and this carrier inserts reinforce and is loaded with the foaming plastic body that is used to strengthen hollow beam; Dividing plate, it utilizes the thermal expansion foamed plastics to provide the part of track to strengthen, and this track is used for fixing engine bracker or its analog.
Though these technology all are well suited for many application, still need the local special zone of strengthening having near problem.More more specifically, in many hollow-core construction parts, member have one the sealing area of space, the opening that the space is left in its position has some distance, and since the curvature in the member or the bending be difficult to get at.In some cases, member and determined passage thereof have irregular geometry, make it inaccessible special interior zone.Certainly, in some cases, also might fill total with the liquid resin that solidifies later on simply, still, as mentioned above, this method may be too expensive in many application.Therefore, need the method that another kind provides the part reinforcement of this parts.The invention provides answer to this problem.
One object of the present invention is for providing a kind of method, and it provides local stiffener in the zone of the hollow-core construction parts that are difficult to arrive with conventional art.
Another object of the present invention is for a kind of method that adds local resin stiffener in structure member is provided, in these parts, and the another side of the sweep of the zone that is reinforced in passage.
Another purpose of the present invention is for providing a kind of method, it in the hollow-core construction parts in inaccessible set of regions the resin stiffener.
A kind of method at the regional area strengthening part that provides is provided.This method comprises the following steps: to provide a flexible member, and its length is basically greater than its width; Encase at least a portion of flexible member with the thermal expansion resin; Flexible member is inserted in the cavity of hollow-core construction part.Inserting step comprises such step, and promptly crooked flexible member makes it to adapt to the geometry of the cavity of parts.Make the resin thermal expansion then, so that resin-bonded on structure member.Like this, make it to be difficult to maybe can not can reach local the reinforcement for many its internal geometries with the parts that conventional art is strengthened.
In one aspect, flexible member is a pipe, and resin applies around it, becomes a layer or coating.To scribble in the pipe insert structure parts of resin later on and having pressure to do the time spent its bending, so that it is it can be admitted in the parts cavity, promptly consistent with desired shape when it is inserted in the parts.
In one aspect, resin comprises blowing agent and glass microsphere.After flexible member is in place in parts, for example after the motor vehicles of packing into, parts are heated to the temperature that is enough to make the blowing agent activation and makes the resin thermal expansion.When resin expanded, it was bonded on the inwall of parts, formed to have the structure of the pipe of high-strength characteristic to the pipe formula.
In one aspect, by weight, the thermal expansion resin comprises about 40%～80% resin, about 10%～50% microballoon, about 0.5%～5% blowing agent, about 1%～15% filler, about 0.5%～2% accelerator and about 1%～8% curing agent.
In yet another aspect, flexible member comprises one or more spacers, and it separates the inwall of flexible member and structure member.
Of the present invention aspect these and other, characteristic and purpose will be with reference to the accompanying drawings in the following detailed description of the preferred embodiments of the present invention be described more completely.
Fig. 1 shows used in the method for the invention resin support pipe.
Fig. 2 is the facade side elevation of a partly cut-away, and it shows the position of unexpanded resin on the resin support pipe.
Fig. 3 shows another resin support pipe, and it has the overcoat of unexpanded resin.
Fig. 4 shows the cutaway view of crooked structural elements, and it shows the position of resin support pipe before resin expands.
Fig. 5 shows the cutaway view of structural elements of the bending of Fig. 4, and it shows the resin that forms the inner expansion of strengthening.
Fig. 6 is the front view of resin support pipe, and this support column has the radial spacer of using in the present invention.
Fig. 7 is the end-view of the support column of Fig. 6 along arrow 7-7 direction.
Fig. 8 shows the cutaway view of crooked structural elements, shows the placement of unexpanded resin and spacer.
Referring to Fig. 1 and 2, there is shown the flexible member of the supporting that is used as unexpanded resin enclosure 22 or manage 20.Flexible member 20 preferably to as the similar hollow pipe of conduit of electric wire 23.The person skilled in the art knows various flexible conduit.A kind of special preferred flexible conduit is a metallic coil, and it can not have flow of metal owing to its helical structure when bending.Certainly, the cross section of pipe 20 not necessarily must be circular, and other configuration also is suitable as square or oval.When flexible member 20 was hollow metal tube, it was made with aluminium and the wall thickness of the 0.5～1.2mm that preferably has an appointment usually.The diameter of pipe 20 can change according to purposes, but is about 8～40mm usually and has the length that is preferably 200mm about 50～800 usually in most automobiles are used.In some applications, pipe will be out of shape when putting into the structure that is reinforced, and surpass its elasticity limit.In addition, in some applications, can be with elasticity bigger pipe or bar, they are in place by fexible bias pressure basically in structural cavities.Though hollow pipe 20 is most preferred, especially, also can use solid bar because it provides lightweight structure.It would be desirable as pipe 20 in some applications and use sticking plaster or pipe, rather than metal tube or rod.
The length of pipe 20 is functions of the distance from the cavity opening to the place that is reinforced.Pipe 20 length is greater than its diameter or width, and in many application, and it is big at least 4 times or big 19 times that the length of pipe 20 cans be compared to its diameter of section most, and more frequent then is big 99 times.In many application, pipe 20 length that have about 50～200mm.Also have, in some applications, it would be desirable shown in the spiral duct among Fig. 3 to encase whole pipe 20a substantially with resin enclosure 22a.
Resin enclosure 22 is a layer that extends around the whole outer surface of pipe 20 in majority is used, and has the comparison thickness about 2～6mm for example uniformly at unswollen state.Being prepared as with punch die of resin enclosure 22 cuts into needed geometry with resin sheet, and the thin slice of well cutting surrounds around pipe 20 in advance.Another kind of scheme is for to be molded in coating on the carrier, though also can for example pass through spraying or the like with the coating of other form.
The polymer that is used to form resin enclosure 22 is resin-based material, what it preferably can thermal expansion.Can form resin enclosure 22 with many resin-based compounds in the present invention.Preferred compound is given remarkable strength and stiffness characteristic, only strengthens weight simultaneously again slightly.Now prove the composition of shell 22 specially, the density of material is preferably 20～50 pounds every cubic feet, so that weight is minimum.Fusing point, heat distortion temperature and produce the temperature of chemical breakdown all must be enough high so that its structure of maintenance under the high temperature that shell 22 often runs in paint stove etc.Therefore, shell 22 should anti-ly in short-term be higher than 320 best high temperature of 350.Also have, shell 22 should long-term anti-about 90～200 warm and do not show big distortion or the degraded that is caused by heat.
More detailed, in a particularly preferred embodiment, the thermal expansion structural foamed plastic of shell 22 comprises synthetic resin, pore former and filler, and synthetic resin comprises about 40%～80% of shell weight, more better is about 45%～75%, is preferably about 50%～70%.Preferably, a part of resin comprises flexible-epoxy.Term used herein " pore former " usually refers to produce the object in bubble, aperture or hole in shell 22.That is to say that shell 22 has microcellular structure, have many micropores that in its whole quality, spread all over.Microcellular structure provides a kind of low-density high-strength material, and it provides a solid still lightweight structure.Be applicable to that pore former of the present invention comprises " hollow " microballoon or the microvesicle of the reinforcement that can make with glass or plastics.Particularly preferably be glass microsphere.Also have, pore former can comprise blowing agent, and it can be CBA or physical blowing agent.When pore former comprised microballoon or big ball, its composition was about 10%～50% by the weight of the material that forms shell 22, and more better is about 15%～45%, is preferably about 20%～40%.When comprising blowing agent in pore former, its composition is about 0.5%～5% by the weight of shell 22, and more better is about 1%～4%, is preferably about 1%～2%.The filler that is suitable for comprises glass or plastic microsphere, smokes silica, the calcium carbonate of system, the glass fibre that grinds and the glass fiber of cut-out.Particularly preferably be the thixotropy filler.Other material is also applicable.Filler comprises about 1%～15% that by the weight of shell more better is about 2%～10%, is preferably about 3%～8%.
Be used for preferred synthetic resin of the present invention and comprise thermosetting resin such as epoxy resin, vinylester resin, thermosetting polyester resin and urethane resin.Do not wish that scope of the present invention is subjected to the molecule quantitative limitation of resin, and suitable weight will be understood according to present disclosure by the person skilled in the art.When the resin composition of liquid filler material is thermosetting resin, can also comprise various accelerators (as imidazoles) and curing agent (being preferably dicyandiamide), to strengthen curing rate.The amount that works of accelerator is generally about 0.5%～2% of weight resin, and correspondingly reduces a kind of amount in three kinds of components such as resin, pore former or filler.Equally, the amount of used curing agent is generally about 1%～8% of weight resin, and correspondingly reduces a kind of amount in three kinds of components such as resin, pore former or filler.In layer, can also comprise processing aid, stabilizing agent, colouring agent, ultra-violet absorber of effective dose etc.Also can use thermoplastic.
Following table has been stipulated the preferred prescription of shell 22.Have been found that this prescription provides a kind of material that can fully expand and solidify and remarkable structural behaviour is provided when 320 left and right sides.All percentage number averages in the present disclosure by weight, unless other proprietary indication.
Component percentage by weight
EPON 828 (epoxy resin) 37.0
DER 331 (flexible-epoxy) 18.0
DI-cy (dicy-curing agent) 4.0
IMIDILOLE (accelerator) 0.8
Smoke system silica (thixotropy filler) 1.1
GELOGEN AZ199 (azo dicarbonamide blowing agent) 1.2
838 MICROS (glass microsphere) 37.0
WINNOFIL calcium carbonate (CaCO
3Filler) 0.9
Referring now to Fig. 4,, with section structure member 24 is shown among the figure, member marks cavity 26.Because its purpose is just in order to illustrate, so structure member 24 illustrates as the part of automobile rolling bar herein.Other preferably is applied as A column joint and the seat frame that is used for reinforced top.Structure member 24 has an arc or crooked part 28, and it has marked the arch section 30 of cavity 26.The various cavitys just inaccessible part similar to cavity 26 is focus of the present invention.Shown in flexible pipe 20 just in place in cavity 26 before the resin thermal expansion.Pipe 20 is bent to consistent with the shape of cavity 26.This forming process is preferably carried out on the spot.Easy speech, the flexible pipe 20 with resin enclosure 22 is inserted in the cavity 26, and this shell 22 is positioned at previously selected position with respect to the end of pipe 20.When effect was strong on pipe 20, pipe 20 moved forward through passage.When flexible pipe 20 ran into resistance from inwall 32, it was just crooked, " wriggled " and advanced thereby pass cavity 26, and this cavity comprises the part of crossing arch section 30.Another kind of scheme is, will manage 20 before can be in some applications in inserting cavity 26 to bend to the geometry that matches.The distance that flexible pipe 20 is inserted will be enough to make resin enclosure 22 to be in arch section 28 should be had on the position.In case in place, if needs are arranged, just with the clip (not shown) with outer end 34 or manage 20 in place or with other method fix in position with respect to pipe 20 clampings.
Cavity 26 is non-rectilinear geometry, and it can be more complicated than having the arch section that has only a bending shown in Figure 4.As a plurality of bendings or irregular portion timesharing, also can provide resin enclosure 22 to some or all of these irregular parts, it can be done like this, single spaced-apart resin section promptly is set or the one or more continuous resin sections that is positioned at two or more knees is provided.
Referring now to Fig. 5,, shown in resin 22 be in swelling state.That is to say, in case 20 in place in structure member 24 with resin 22, whole assembly is heated to makes blowing agent activation to expand and the temperature of cured resin shell 22, make the resin expansion.This process is finished when vehicle moves through the paint stove in the application of automobile usually.Resin expand into the several times of original volume, preferably is at least the twice of its original volume.The resin that expands contacts with the wall 32 of structure member 24 on every side and bonds thereon securely.It also solidifies and form the stiffener of rigidity in parts 24.Like this, just can needs strengthen accurate local with minimum resin.
Referring now to Fig. 6 and 7,, pipe 20 is provided with the leg assembly 36 of warp-wise, and it has pin 38, and its quantity is generally two to four.As can be seen from Figure 8, leg assembly 36 plays a part pipe 20 centering roughly in structure member 24.Preferably make more or less elasticity of pin 38, promptly wish pin 38 inside deflection when pipe 20 is inserted in the cavity 26.
Describe though the present invention mainly is connection with automotive vehicles or vehicle part, should be appreciated that the present invention can be used as other products such as aircraft, boats and ships, bicycle or the parts of any object of in fact needing to move with energy are implemented.Equally, the present invention also can be used in that fix or the static structure example such as building, non-yielding prop to be provided or to provide lightweight supporting to the structure that is subjected to load merely when the vibration that for example is subjected to from earthquake.In addition, though the present invention mainly is described according to the thermal expansion foamed plastics with according to metal parts such as structure member and flexible member, also can use other material.For example, foamed plastics can be any known suitable expandable foamed plastics, and it expands with chemical activation and forms the structural foamed plastic of rigidity.Flexible member can be with the material manufacturing beyond the metal, and such as various plastics or polymeric material or various timber fiber type material, they have enough rigidity, with backing or the supporting that plays a part foamed plastics.When adopting the thermal expansion foamed plastics, the heat that flexible member should ability be run into when heat cure.But, when adopting the foam type material of other type, flexible member not necessarily needs can be high temperature resistant.Otherwise the basic demand of flexible member will have enough rigidity for it, to work by desired mode.For example, it also can be used as a kind of like this flexible member material and uses, and promptly itself becomes rigidity when solidifying or further handling.The present invention also can be implemented when making with metal at structure member.But, preferably the material of bar structure parts and flexible member is hanked equally with foamed plastics, so that thin unexpanded foamed plastics forms solid being connected with structure member and flexible member when expanding, obtains a structural composites with activation.
Though show and described special embodiment of the present invention herein,, should understand, the present invention is not limited to this, and this is because according to present disclosure, can make many improvement, particularly person skilled in the art.Therefore, according to appended claims, be intended to topped any this class and improve, as long as it belongs to practicalness of the present invention and scope.
Claims (32)
1. the method for strengthening part, it comprises the following steps:
One flexible member is provided, and its length is greater than its width;
Encase at least a portion of flexible member with expandable resin;
Flexible member is inserted in the cavity of hollow component, inserting step comprises such step, and promptly crooked flexible member makes it to adapt to the geometry of cavity; And
Expandable resin is expanded, so that resin bonding is on above-mentioned parts.
2. the method for strengthening part as claimed in claim 1 is characterized by, and flexible member is a hollow pipe.
3. the method for strengthening part as claimed in claim 1 is characterized by, and flexible member is a solid bar.
4. the method for strengthening part as claimed in claim 1 is characterized by, resin be heat-swellable and contain hollow microballoon.
5. the method for strengthening part as claimed in claim 1 is characterized by, and parts are chosen in the group that seat frame or roll bar are formed from by the A column joint that is used for motor vehicles.
6. the method for strengthening part as claimed in claim 1 is characterized by, and flexible member has the spacer of setting up, and it was used for before expansion step the inwall of flexible member and parts is separated.
7. the method for strengthening part as claimed in claim 1 is characterized by, and the length of flexible pipe is at least five times of its diameter.
8. the method for strengthening part as claimed in claim 1 is characterized by, and the diameter of flexible pipe is about 8～40mm, and its length is about 50～200mm.
9. the method for strengthening part as claimed in claim 1 is characterized by, and expandable resin forms one and surrounds and seal the layer of the part of flexible member at least.
10. the method for strengthening part as claimed in claim 1 is characterized by, and layer has the thickness about uniform a 2～8mm.
11. the method for strengthening part as claimed in claim 1 is characterized by, flexible member is hollow and has wall thickness about 0.5～1.2mm.
12. the method for strengthening part as claimed in claim 1 is characterized by, flexible pipe is made with metal.
13. the method as the strengthening part of claim 12 is characterized by, metal is an aluminium.
14. the method for strengthening part as claimed in claim 1 is characterized by, flexible member was wanted to be out of shape before inserting nonelasticly, and its distortion is wanted so, so that flexible member is consistent with the geometry of cavity.
15. the method for strengthening part as claimed in claim 1 is characterized by, flexible member in inserting step by contact shaping with parts.
16. the method for strengthening part as claimed in claim 1 is characterized by, flexible member is being fixed on the parts before the expansion step.
17. the method for strengthening part as claimed in claim 1 is characterized by, the length of flexible member is at least five times of its width.
18. the method for strengthening part as claimed in claim 1 is characterized by, flexible pipe is substantially all encased by expandable resin.
19. the method for strengthening part as claimed in claim 1, it is characterized by, resin can thermal expansion, and comprise resin about 40%～80% by weight, microballoon about 10%～50%, blowing agent about 0.5%～5%, about 1%～15% filler, about 0.5%～2% accelerator and about 1%～8% curing agent.
20. the method for strengthening part as claimed in claim 1 is characterized by, resin can thermal expansion also comprise 55% epoxy resin by weight, two cyanogen connection acid amides (dicyandiamide) curing agent of 4%, 0.8% imidazoles accelerator.1.1% the system that smokes silica, 1.2% azo dicarbonamide blowing agent, 37% glass microsphere and 0.9% calcium carbonate-filled dose.
21. the method for strengthening part as claimed in claim 1 is characterized by, flexible member is a hollow pipe, and it has from the electric wire of longitudinal extension wherein.
22. the method for strengthening part as claimed in claim 1 is characterized by, cavity is the geometry of non-rectilinear, and it has at least one sweep and makes flexible member wind through cavity, is positioned at sweep until resin.
23. the method for strengthening part as claimed in claim 1 is characterized by, and a plurality of sweeps is arranged and resin is placed on more than one bend office.
24. the method for strengthening part as claimed in claim 1 is characterized by, resin one is around the thin slice of the usefulness die cut of flexible member parcel or be molded in coating on the flexible member.
25. the method for strengthening part as claimed in claim 1 is characterized by, flexible member is a spirality winding pipe.
26. the method for strengthening part as claimed in claim 1 is characterized by, parts are vehicle parts, and resin can thermal expansion, and in the paint step in vehicle paint stove swollen resin.
27. the strengthening part made from the method for claim 1 defined.
28. strengthen the method for structure member, these parts have the inaccessible space owing to the geometry of parts, method comprises the following steps:
The flexible member of one hollow is provided, and its length is at least five times of its width;
With expandable resin coated at least a portion flexible member;
Flexible member is inserted in the cavity of hollow-core construction parts, inserting step comprises such step, and promptly crooked flexible member makes it to adapt to the geometry of above-mentioned cavity.
Flexible member is fixed in the structure member; And
The expandable resin that expands is so that expandable resin bonding is on the said structure parts.
29. one comprises the structure member of the reinforcement of a rigid element, it has the microscler cavity of the non-rectilinear geometry that has a sweep at least, one flexible member longitudinally is arranged in above-mentioned cavity and passes above-mentioned sweep, resin bed on above-mentioned flexible member is positioned at above-mentioned sweep, above-mentioned resin bed is used in the structural foam manufacturing that when activation expand, and above-mentioned resin bed expand into closely to contact also at above-mentioned sweep and above-mentioned parts and bonds together with it.
30. the parts as claim 29 is characterized by, the vehicle part of parts for choosing from the group of being made up of roll bar, A column joint and seat frame.
31. the parts as claim 29 is characterized by, above-mentioned flexible member is hollow, and electric wire longitudinally passes above-mentioned flexible member and extends.
32. parts as claim 29, it comprises the leg assembly that at least one is installed around above-mentioned flexible member, its position is in the outside of above-mentioned resin bed, and above-mentioned leg assembly has a plurality of outwardly directed pin, they in above-mentioned cavity with the inner surface Elastic Contact of above-mentioned parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98116306 CN1205923A (en) | 1997-07-21 | 1998-07-17 | Method for reinforcing structural members |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US053264 | 1997-07-21 | ||
| US103033 | 1998-06-23 | ||
| CN 98116306 CN1205923A (en) | 1997-07-21 | 1998-07-17 | Method for reinforcing structural members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1205923A true CN1205923A (en) | 1999-01-27 |
Family
ID=5225005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98116306 Pending CN1205923A (en) | 1997-07-21 | 1998-07-17 | Method for reinforcing structural members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1205923A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802973A (en) * | 2010-03-16 | 2012-11-28 | 中央发条株式会社 | Method for producing vehicle stabilizer |
| CN103538196A (en) * | 2013-09-24 | 2014-01-29 | 江苏恒盛达环境科技有限公司 | Method for preparing novel heat-insulating spiral duct for ships |
| CN103974876A (en) * | 2011-12-06 | 2014-08-06 | 戴姆勒股份公司 | Body component |
| CN104918846A (en) * | 2013-01-18 | 2015-09-16 | Sika技术股份公司 | Reinforcing element for a closed section and manufacturing method |
| CN108357048A (en) * | 2018-02-08 | 2018-08-03 | 合肥华凌股份有限公司 | Preparation method, refrigeration equipment babinet and the refrigeration equipment of babinet |
| CN109070950A (en) * | 2016-04-21 | 2018-12-21 | 泽菲罗斯有限公司 | Tubular element sealing device |
| CN110203284A (en) * | 2019-06-04 | 2019-09-06 | 中国第一汽车股份有限公司 | A kind of subframe of hollow cast aluminium and aluminum profile welding |
| CN110709311A (en) * | 2017-06-02 | 2020-01-17 | 本田技研工业株式会社 | Panel of vehicle and manufacturing method thereof |
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1998
- 1998-07-17 CN CN 98116306 patent/CN1205923A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802973B (en) * | 2010-03-16 | 2016-01-20 | 中央发条株式会社 | The manufacture method of automotive stabilizer bar |
| CN102802973A (en) * | 2010-03-16 | 2012-11-28 | 中央发条株式会社 | Method for producing vehicle stabilizer |
| CN103974876A (en) * | 2011-12-06 | 2014-08-06 | 戴姆勒股份公司 | Body component |
| US9162707B2 (en) | 2011-12-06 | 2015-10-20 | Daimler Ag | Body component |
| CN103974876B (en) * | 2011-12-06 | 2016-08-24 | 戴姆勒股份公司 | Bodywork component |
| US10328775B2 (en) | 2013-01-18 | 2019-06-25 | Sika Technology Ag | Reinforcing element for a closed section and manufacturing method |
| CN104918846A (en) * | 2013-01-18 | 2015-09-16 | Sika技术股份公司 | Reinforcing element for a closed section and manufacturing method |
| CN104918846B (en) * | 2013-01-18 | 2018-05-25 | Sika技术股份公司 | For being closed the reinforcer of section and manufacturing method |
| CN103538196A (en) * | 2013-09-24 | 2014-01-29 | 江苏恒盛达环境科技有限公司 | Method for preparing novel heat-insulating spiral duct for ships |
| CN109070950A (en) * | 2016-04-21 | 2018-12-21 | 泽菲罗斯有限公司 | Tubular element sealing device |
| CN110709311A (en) * | 2017-06-02 | 2020-01-17 | 本田技研工业株式会社 | Panel of vehicle and manufacturing method thereof |
| CN110709311B (en) * | 2017-06-02 | 2022-07-29 | 本田技研工业株式会社 | Panel for vehicle and method for manufacturing same |
| CN108357048A (en) * | 2018-02-08 | 2018-08-03 | 合肥华凌股份有限公司 | Preparation method, refrigeration equipment babinet and the refrigeration equipment of babinet |
| CN108357048B (en) * | 2018-02-08 | 2020-04-17 | 合肥华凌股份有限公司 | Preparation method of box body, box body for refrigeration equipment and refrigeration equipment |
| CN110203284A (en) * | 2019-06-04 | 2019-09-06 | 中国第一汽车股份有限公司 | A kind of subframe of hollow cast aluminium and aluminum profile welding |
| CN110203284B (en) * | 2019-06-04 | 2021-07-09 | 中国第一汽车股份有限公司 | Hollow cast aluminum and aluminum section bar welded auxiliary frame |
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