CN117231584A - Carbon fiber hydraulic cylinder body, forming process of cylinder body and hydraulic cylinder - Google Patents
Carbon fiber hydraulic cylinder body, forming process of cylinder body and hydraulic cylinder Download PDFInfo
- Publication number
- CN117231584A CN117231584A CN202311507804.6A CN202311507804A CN117231584A CN 117231584 A CN117231584 A CN 117231584A CN 202311507804 A CN202311507804 A CN 202311507804A CN 117231584 A CN117231584 A CN 117231584A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- inner cylinder
- foam
- carbon fiber
- flange
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- 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
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 28
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 24
- 239000006260 foam Substances 0.000 claims abstract description 39
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 239000004620 low density foam Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 12
- 238000005260 corrosion Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 8
- 229920006332 epoxy adhesive Polymers 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 229920006934 PMI Polymers 0.000 description 11
- 239000002184 metal Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 229920007790 polymethacrylimide foam Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The application discloses a carbon fiber hydraulic cylinder body, a forming process of the cylinder body and a hydraulic cylinder, belonging to the technical field of hydraulic equipment, wherein the hydraulic cylinder body comprises: an inner cylinder; the flanges are arranged at two ends of the inner cylinder and are connected with the inner cylinder, and the flanges comprise connecting parts and pressing parts; the shell comprises a round platform part and a cylindrical part, wherein the round platform part is arranged at two ends of the cylindrical part, the round platform part is attached to the pressing part, the pressing part is full of the round platform part, and a cavity is formed between the cylindrical part and the inner cylinder; and the foam is filled in the cavity, and is PMI low-density foam. The application provides a cylinder body with light weight and high structural strength, a forming process of the cylinder body and a hydraulic cylinder.
Description
Technical Field
The application relates to the technical field of hydraulic equipment, in particular to a carbon fiber hydraulic cylinder body, a forming process of the cylinder body and a hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic executive component which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion), and has simple structure and reliable operation. When the device is used for realizing reciprocating motion, a speed reducing device can be omitted, a transmission gap is avoided, and the device is stable in motion, so that the device is widely applied to the fields such as aviation, engineering machinery, robot manufacturing, high-frequency testing machines and the like.
In various fields such as aviation, engineering, robots and the like, the weight reduction of the hydraulic cylinder brings better benefits, and taking aviation as an example, the overall weight of an airplane is reduced by 1%, the performance can be improved by 3% -5%, the endurance time is prolonged, and the operability is enhanced, so that the overall quality of the hydraulic cylinder is necessarily reduced on the premise of ensuring the structural strength.
Disclosure of Invention
The application mainly aims to provide a carbon fiber hydraulic cylinder body, a forming process of the cylinder body and a hydraulic cylinder, and aims to reduce the overall quality of the hydraulic cylinder on the premise of ensuring the structural strength.
In order to achieve the above object, the present application provides a carbon fiber hydraulic cylinder block, the hydraulic cylinder block comprising:
an inner cylinder;
the flanges are arranged at two ends of the inner cylinder and are connected with the inner cylinder, and the flanges comprise connecting parts and pressing parts;
the shell comprises a round platform part and a cylindrical part, wherein the round platform part is arranged at two ends of the cylindrical part, the round platform part is attached to the pressing part, the pressing part is full of the round platform part, and a cavity is formed between the cylindrical part and the inner cylinder;
and the foam is filled in the cavity, and is PMI low-density foam.
Alternatively, in an embodiment of the present application, the outer shell and the inner cylinder are formed by a wet continuous winding process.
Optionally, in an embodiment of the present application, a material of the outer shell and the inner cylinder is T700 carbon fiber reinforced vinyl resin.
Optionally, in an embodiment of the present application, the inner cylinder and the flange are connected by epoxy adhesive.
Optionally, in an embodiment of the present application, the foam includes:
the cross section of the bearing part is of an elliptical structure, and the long axis direction of the bearing part is the same as the axis direction of the inner cylinder;
the force transmission parts are spherical, the force transmission parts are in butt joint with the force bearing parts, and one force transmission part is in butt joint with four force bearing parts around the force transmission parts.
Optionally, in an embodiment of the present application, a side edge of the cross section of the pressing portion is arc-shaped, a side edge of the cross section of the truncated cone portion is arc-shaped corresponding to the pressing portion, and an inner wall of the truncated cone portion is attached to an outer wall of the pressing portion.
Optionally, in an embodiment of the present application, the flange is made of high-strength corrosion-resistant stainless steel.
The application also provides a carbon fiber hydraulic cylinder body molding process, which comprises the following steps:
s1, forming an inner cylinder through a wet continuous winding process;
s2, reserving machining allowance for the flange and bonding the flange with the inner cylinder;
s3, adhering foam on the outer wall of the inner cylinder;
s4, after bonding and curing in the S2 and the S3, processing the flange allowance, so that the end face of the flange is flush with the end face of the inner cylinder;
s5, applying prestress to the foam, wherein the foam forms a shell outside the foam through a continuous winding process when the foam bears the prestress;
s6, performing surface treatment after the shell is molded and cured.
Optionally, in an embodiment of the present application, the pressure range of the prestressing force applied to the foam in S5 is: 0.15-0.3 MPa.
The application also provides a hydraulic cylinder, which comprises the carbon fiber hydraulic cylinder body.
Compared with the prior art, the application can at least realize the following beneficial effects. The quality of the whole cylinder body is reduced by filling PMI low-density foam between the outer shell and the inner cylinder. The shell and the inner cylinder of the traditional hydraulic cylinder can be formed integrally by metal, or the integral structural strength of the hydraulic cylinder is ensured by arranging the metal shell with a certain thickness. After the PMI low-density foam is filled, compared with the cylinder body in the prior art, the wall thickness of the shell and the inner cylinder in the cylinder body can be properly reduced, and the technical effect of reducing the mass of the cylinder body can be realized after the PMI low-density foam is filled because the density of the PMI low-density foam is far smaller than that of metal. The PMI foam has good mechanical property, thermal stability and corrosion resistance, and has low thermal conductivity in a low-temperature environment, so that hydraulic oil is prevented from being solidified due to external low temperature, and the cylinder body can work normally in the low-temperature environment. The flange divide into connecting portion and clamping part, and connecting portion are used for other components to be connected, and clamping part is by the outside of shell hooping at the inner cylinder, and the pneumatic cylinder can appear vibrations in the course of the work, and vibrations can lead to the connection inefficacy between flange and the inner cylinder, through the hooping of shell, guarantee the stability of flange.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a cylinder block of a carbon fiber hydraulic cylinder according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the structure of foam in a carbon fiber hydraulic cylinder block according to the present application;
fig. 3 is a flow chart of a process for forming a cylinder body of a carbon fiber hydraulic cylinder.
Reference numerals illustrate: 100. an inner cylinder; 200. a flange; 210. a connection part; 220. a pressing part; 300. a housing; 310. a round table part; 320. a cylindrical portion; 400. foaming; 410. a force bearing part; 420. a force transmission part; 500. an epoxy adhesive.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Referring to fig. 1, the present application proposes a carbon fiber hydraulic cylinder block, the hydraulic cylinder block comprising:
an inner cylinder 100;
the flanges 200, the flanges 200 are disposed at both ends of the inner cylinder 100 and connected with the inner cylinder 100, the flanges 200 including a connection part 210 and a pressing part 220;
the casing 300, the casing 300 includes a round table portion 310 and a cylindrical portion 320, the round table portion 310 is disposed at two ends of the cylindrical portion 320, the round table portion 310 is attached to the pressing portion 220, and the pressing portion 220 is filled with the round table portion 310, and a cavity is formed between the cylindrical portion 320 and the inner cylinder 100;
the foam 400 is filled in the cavity, and the foam 400 is PMI low-density foam.
In the technical solution adopted in this embodiment, the quality of the whole cylinder body is reduced by filling the PMI low density foam 400 between the outer case 300 and the inner cylinder 100. The outer shell 300 and the inner cylinder 100 of the traditional hydraulic cylinder are integrally formed by metal, or the integral structural strength of the hydraulic cylinder is ensured by arranging a metal outer shell with a certain thickness, and the integral quality of the cylinder body is reduced by arranging the PMI low-density foam 400 between the outer shell 300 and the inner cylinder 100. After the PMI low-density foam 400 is filled, compared with the cylinder body in the prior art, the wall thickness of the outer shell 300 and the inner cylinder 100 in the cylinder body can be properly reduced, and the technical effect of reducing the mass of the cylinder body can be realized after the PMI low-density foam 400 is filled because the density of the PMI low-density foam 400 is far smaller than that of metal. And the PMI foam 400 has good mechanical properties, thermal stability and corrosion resistance, and has low thermal conductivity in a low-temperature environment, so that hydraulic oil is prevented from being solidified due to external low temperature, and the cylinder body can work normally in the low-temperature environment. The flange 200 is divided into a connecting part 210 and a pressing part 220, the connecting part 210 is used for connecting other components, the pressing part 220 is hooped on the outer part of the inner cylinder 100 by the outer shell 300, vibration can occur in the working process of the hydraulic cylinder, the vibration can possibly cause connection failure between the flange 200 and the inner cylinder 100, and the stability of the flange 200 is ensured through the hooping of the outer shell 300.
Specifically, the lateral side of the cross section of the compressing part 220 is arc-shaped, the lateral side of the cross section of the truncated cone 310 is arc-shaped corresponding to the compressing part 220, and the inner wall of the truncated cone 310 is attached to the outer wall of the compressing part 220. The arc structure can be fast when the atress distributes the power to each position of arc structure, guarantees that the outer wall of compressing tightly portion 220 evenly bears the compressive force of round platform portion 310, reduces compressing tightly portion 220 deformation's possibility and improves the banding effect of round platform portion 310 to compressing tightly portion 220.
The flange 200 is made of high-strength corrosion-resistant stainless steel, and specifically, the stainless steel with the brand number of 304L or 316L can be selected. So that the flange 200 can be adapted to certain specific circumstances.
Further, the outer case 300 and the inner case 100 are formed through a wet continuous winding process.
The product produced by the wet continuous winding process has better air tightness, and the winding tension can extrude the redundant resin glue solution out of the bubbles and fill the pores. Due to the protection of the resin glue solution, fiber abrasion can be reduced in the winding process, and the parallelism of fiber arrangement is better. The inner cylinder 100 processed by the process has accurate size and smooth surface, and can be in barrier-free contact with the piston without subsequent processing.
Further, the material of the outer shell 300 and the inner cylinder 100 is T700 carbon fiber reinforced vinyl resin. The carbon fiber of the T700 grade has higher mechanical property, and the vinyl resin has excellent corrosion resistance.
Further, the inner cylinder 100 is connected with the flange 200 by an epoxy adhesive 500.
The epoxy adhesive 500 contains various polar groups and epoxy groups having a high reactivity, and the cohesive strength of the epoxy cured product is also high, so that the adhesive strength is high, and the foam 400 and the flange 200 can be tightly adhered to the outside of the inner cylinder 100.
The epoxy adhesive 500 is substantially free of low molecular volatiles generated upon curing. The volume shrinkage rate of the adhesive layer is small and is about 1% -2%, and the adhesive layer is one of the varieties with the minimum curing shrinkage rate in thermosetting resin. The coefficient of linear expansion of the epoxy cured product is also small. Therefore, the internal stress is small, and the influence on the bonding strength is small. In addition, the creep of the epoxy cured product is small, so the dimensional stability of the adhesive layer is good. In addition, the corrosion resistance and the dielectric property are good. Can resist corrosion of various mediums such as acid, alkali, salt, solvent and the like. The volume resistivity is 1013-1016 ohm cm, and the dielectric strength is 16-35 kV/mm.
Further, referring to fig. 2, the foam 400 includes:
the bearing part 410, the cross section of the bearing part 410 is of an elliptical structure, and the long axis direction of the bearing part 410 is the same as the axis direction of the inner cylinder 100;
the force transmission parts 420, the force transmission parts 420 are spherical, the force transmission parts 420 are abutted with the force bearing parts 410, and one force transmission part 420 is abutted with four force bearing parts 410 around the force transmission parts.
In the technical solution adopted in this embodiment, the structural strength of the foam 400 is improved by setting the bearing portion 410 and the force transmission portion 420, where the bearing portion 410 is used to bear the force generated by the exterior to the foam 400, and the cross section of the bearing portion 410 is set to be elliptical, so that the force borne by the bearing portion 410 can be rapidly dispersed to each portion of the bearing portion 410. When the foam 400 receives an external force, the force receiving part 410 distributes the received force to each part of the force receiving part 410 and deforms, meanwhile, the force receiving part 410 transmits the force to the force receiving part 420, the force receiving part 420 deforms and simultaneously rapidly transmits the force to other force receiving parts 410 which are in contact with the force receiving part 420, and rapid transmission of the force is realized through the force receiving part 420. Under the combined action of the force bearing part 410 and the force transmission part 420, the force applied to the foam 400 can be rapidly dispersed and conducted in the foam 400, so that irreversible deformation is prevented and the force bearing capacity is improved.
The application also provides a carbon fiber hydraulic cylinder body molding process, which comprises the following steps:
s1, forming an inner cylinder through a wet continuous winding process;
s2, reserving machining allowance for the flange and bonding the flange with the inner cylinder;
s3, adhering foam on the outer wall of the inner cylinder;
s4, after the bonding and solidification in the S2 and the S3, processing the flange allowance, so that the end face of the flange is flush with the end face of the inner cylinder;
s5, applying prestress to the foam, and forming a shell on the outer part of the foam through a continuous winding process when the foam bears the prestress;
s6, performing surface treatment after the shell is molded and cured.
Specifically, the pre-stress applied to the foam 400 in S5 has a pressure range of: 0.15-0.3 MPa.
By pre-stressing the foam 400 when the housing 300 is wound and formed, it can be ensured that the foam 400 can be better filled in the cavity between the housing 300 and the inner cylinder 100 after the housing 300 is formed. It will be appreciated that the hoop tube may be used to pre-stress the foam 400, wrapping the fibrous material of the housing 300 around the outer surface of the hoop tube, and drawing the hoop tube away along the axial direction of the inner cylinder 100 after the wrapping of the portion of the housing 300 is completed, so that the wrapped portion of the housing 300 conforms to the surface of the foam 400, and due to the foam 400 losing external force, a deformation trend is generated towards the housing 300, so that the housing 300 conforms more tightly to the foam 400. In addition, it should be noted that the wall thickness of the ferrule barrel is less than the deformation of the foam 400.
The application also provides a hydraulic cylinder, which comprises the carbon fiber hydraulic cylinder body, and particularly, the structure and the material of the cylinder body refer to the embodiment, and the hydraulic cylinder adopts all the technical schemes of the embodiment, so that the hydraulic cylinder at least has all the beneficial effects brought by the technical schemes of the embodiment, and the description is omitted.
The foregoing description of the embodiments of the present application is merely an optional embodiment of the present application, and is not intended to limit the scope of the application, and all equivalent structural modifications made by the present application in the light of the present application, the description of which and the accompanying drawings, or direct/indirect application in other related technical fields are included in the scope of the application.
Claims (10)
1. A carbon fiber hydraulic cylinder block, characterized in that the hydraulic cylinder block comprises:
an inner cylinder;
the flanges are arranged at two ends of the inner cylinder and are connected with the inner cylinder, and the flanges comprise connecting parts and pressing parts;
the shell comprises a round platform part and a cylindrical part, wherein the round platform part is arranged at two ends of the cylindrical part, the round platform part is attached to the pressing part, the pressing part is full of the round platform part, and a cavity is formed between the cylindrical part and the inner cylinder;
and the foam is filled in the cavity, and is PMI low-density foam.
2. The carbon fiber hydraulic cylinder block of claim 1 wherein said outer shell and said inner cylinder are formed by a wet continuous winding process.
3. The carbon fiber hydraulic cylinder block of claim 1 wherein the material of the outer shell and the inner cylinder is T700 carbon fiber reinforced vinyl.
4. The carbon fiber hydraulic cylinder block of claim 1 wherein said inner cylinder is connected to said flange by an epoxy adhesive.
5. The carbon fiber hydraulic cylinder block of claim 1 wherein the foam comprises:
the cross section of the bearing part is of an elliptical structure, and the long axis direction of the bearing part is the same as the axis direction of the inner cylinder;
the force transmission parts are spherical, the force transmission parts are in butt joint with the force bearing parts, and one force transmission part is in butt joint with four force bearing parts around the force transmission parts.
6. The carbon fiber hydraulic cylinder body according to claim 1, wherein the lateral side of the cross section of the pressing part is arc-shaped, the lateral side of the cross section of the round platform part is arc-shaped corresponding to the pressing part, and the inner wall of the round platform part is attached to the outer wall of the pressing part.
7. The carbon fiber hydraulic cylinder block of claim 1 wherein the flange is made of high strength corrosion resistant stainless steel.
8. The carbon fiber hydraulic cylinder body molding process is characterized by comprising the following steps of:
s1, forming an inner cylinder through a wet continuous winding process;
s2, reserving machining allowance for the flange and bonding the flange with the inner cylinder;
s3, adhering foam on the outer wall of the inner cylinder;
s4, after bonding and curing in the S2 and the S3, processing the flange allowance, so that the end face of the flange is flush with the end face of the inner cylinder;
s5, applying prestress to the foam, wherein the foam forms a shell outside the foam through a continuous winding process when the foam bears the prestress;
s6, performing surface treatment after the shell is molded and cured.
9. The carbon fiber hydraulic cylinder block molding process according to claim 8, wherein:
the pre-stress applied to the foam in S5 has a pressure range of: 0.15-0.3 MPa.
10. A hydraulic cylinder comprising a carbon fiber hydraulic cylinder block according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311507804.6A CN117231584B (en) | 2023-11-14 | 2023-11-14 | Carbon fiber hydraulic cylinder body, forming process of cylinder body and hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311507804.6A CN117231584B (en) | 2023-11-14 | 2023-11-14 | Carbon fiber hydraulic cylinder body, forming process of cylinder body and hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117231584A true CN117231584A (en) | 2023-12-15 |
| CN117231584B CN117231584B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311507804.6A Active CN117231584B (en) | 2023-11-14 | 2023-11-14 | Carbon fiber hydraulic cylinder body, forming process of cylinder body and hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117231584B (en) |
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| Publication number | Publication date |
|---|---|
| CN117231584B (en) | 2024-02-09 |
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