CN203080094U - Corrosion resistant structure, hydraulic cylinder piston rod and hydraulic cylinder body - Google Patents
Corrosion resistant structure, hydraulic cylinder piston rod and hydraulic cylinder body Download PDFInfo
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- CN203080094U CN203080094U CN 201320037397 CN201320037397U CN203080094U CN 203080094 U CN203080094 U CN 203080094U CN 201320037397 CN201320037397 CN 201320037397 CN 201320037397 U CN201320037397 U CN 201320037397U CN 203080094 U CN203080094 U CN 203080094U
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- anticorrosion structure
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Abstract
The utility model provides a corrosion resistant structure, a hydraulic cylinder piston rod and a hydraulic cylinder body, wherein the corrosion resistant structure comprises a nickel coating (4), a milky white chromium layer (2) and a hard chromium layer (3) which are arranged outside a protected structure and arranged sequentially from inside to outside. The corrosion resistant structure provided by the utility model can be used for effectively enhancing the corrosion resistance of the protected structure, so that the service life of the protected structure is effectively prolonged.
Description
Technical field
The utility model relates to a kind of anticorrosion structure, hydraulic cylinder piston rod and hydraulic cylinder body.
Background technology
In order to adapt to different Working environments, in the prior art, mainly improve its Corrosion Protection by the mode of on matrix, carrying out coating.With the hydraulic cylinder piston rod is example, and the hydraulic cylinder piston rod with preservative effect of the prior art mainly contains following several structure:
As shown in Figure 1, first kind of hydraulic cylinder piston rod of the prior art comprises piston rod body 1 ' and the hard chrome coating 3 ' that sets gradually from inside to outside, and hard chrome coating 3 ' is galvanized single layer structure, and said structure can satisfy the hardness of piston rod and requirement attractive in appearance.
As shown in Figure 2, second kind of hydraulic cylinder piston rod of the prior art comprises the piston rod body 1 ' that sets gradually from inside to outside, milky white chromium layer 2 ' and hard chrome coating 3 ', and generally hard chrome plating forms behind the milky white chromium of electroplating surface of piston rod body 1 '.Milky white chromium layer is that elevated temperature reduces current density on the basis of hard chrome process, and galvanized sedimentation velocity is slow, the fine and close flawless of coating, and after the hardness reduction, between hard chrome coating 3 ' and piston rod body 1 ', formed the excessive layer of milder hardness.Adopt the piston rod corrosion resistance of double-deck chromium to compare individual layer chromium and greatly improve, greatly improve work-ing life.
As shown in Figure 3, the third hydraulic cylinder piston rod of the prior art comprises piston rod body 1 ', nickel layer 4 ' and the hard chrome coating 3 ' that sets gradually from inside to outside, and generally hard chrome plating forms behind the electroplating nickel on surface of piston rod body 1 '.Electronickelling current efficiency height, but in low district also fast deposition, piston rod body 1 ' there is the leveling effect, can reduce surfaceness.Nickel layer hardness is not high simultaneously, and is little with piston rod body 1 ' contrast, has only small quantity of hydrogen to produce in the Ni-Speed.Therefore, getting rid of under the condition of other influence factors, nickel layer can reach does not have hole and crackle substantially, and corrosion resistance is compared preceding two kinds of technology and greatly strengthened, in the environment of applicable and most of aggressive atmospheres.
But there is following problem respectively in above-mentioned hydraulic cylinder piston rod:
The hydraulic cylinder piston rod corrosion resistance nature deficiency of first kind of technical scheme is only applicable to general work condition environment.Hard chrome coating 3 ' the chemical property own is very stable, hard chrome coating 3 ' itself can not corrode under conventional operating mode, but because the current efficiency of Hard Chromium Plating Technology is low, fast in the high current density region sedimentation velocity, coating is dendritic growth, to not leveling effect of piston rod body 1 ', on the contrary roughness is amplified, so the porosity height of hard chrome coating.The hardness height of hard chrome coating, internal stress is big, ductility is little, and is big with piston rod body 1 ' contrast, and chrome-plating process produces a large amount of hydrogen, and hard chrome coating has a large amount of crackles, and because the release of stress, crackle can enlarge deepens sensible piston rod body 1 '.Crackle and hole make the aggressive atmosphere piston rod body 1 ' that goes directly, and therefore the anti-corrosion capability of first kind of technical scheme is relatively poor.
The hydraulic cylinder piston rod corrosion resistance of second kind of technical scheme is general, can corrode in strong corrosive environment.Milky white chromium layer 2 ' still has the characteristic of chrome-plated process, and to not leveling effect of piston rod body 1 ', under the irregular situation of machining, still there is more hole in milky white chromium layer 2 ' before plating.In aggressive atmosphere, the piston rod that particularly is rich in double-deck chromium process in the environment of active anion still can very fast generation corrosion.
The hydraulic cylinder piston rod of the third technical scheme is applicable to most of operating modes, but in being rich in the environment of aggressive atmosphere, because hard chrome coating 3 ' still exists hole and crackle, corrosive environment contacts with nickel layer 4 ', nickel layer 4 ' produces corrosion, particularly some aggressive atmosphere can change the current potential of nickel layer 4 ', and the corrosion speed of nickel layer 4 ' is accelerated, and can cause the 1 ' corrosion of piston rod body behind the nickel layer 4 ' corrosion failure.
The utility model content
The utility model aims to provide a kind of anticorrosion structure, hydraulic cylinder piston rod and hydraulic cylinder body of good Corrosion Protection.
To achieve these goals,, provide a kind of anticorrosion structure, comprised being arranged at nickel layer, milky white chromium layer and the hard chrome coating that protected structure is outer and set gradually from inside to outside according to an aspect of the present utility model.
Further, nickel layer comprises semi-bright nickel layer and the bright nickel layer that sets gradually from inside to outside.
Further, the thickness of nickel layer is more than 20 μ m.
Further, the thickness of semi-bright nickel layer is in the scope of 11 μ m to 13 μ m.
Further, the thickness of bright nickel layer is in the scope of 7 μ m to 9 μ m.
Further, the thickness of milky white chromium layer is in the scope of 10 μ m to 20 μ m.
Further, the thickness of hard chrome coating is in the scope of 20 μ m to 30 μ m.
Further, nickel layer is an electroless nickel layer.
According on the other hand of the present utility model, a kind of hydraulic cylinder piston rod is provided, comprise the body of rod and be arranged at the outer anticorrosion structure of the body of rod that anticorrosion structure is above-mentioned anticorrosion structure.
According on the other hand of the present utility model, a kind of hydraulic cylinder body is provided, comprise casing wall and be arranged at the outer anticorrosion structure of casing wall that anticorrosion structure is above-mentioned anticorrosion structure.
Use the technical solution of the utility model, nickel layer has the effect of filling and leading up to protected structure, but makes that the allowable defect of protected structure is all covered, thereby reduces protected body structure surface roughness, and nickel layer can reach does not have hole and crackle substantially.The milky white chromium layer that forms on nickel layer like this can be imporous substantially coating, and because this milky white chromium stratification stable in properties can completely cut off the corrosion of aggressive atmosphere to nickel layer.Like this; as the milky white chromium layer of intermediate deposit and nickel layer and as the hard chrome coating acting in conjunction of overlay coating; greatly strengthen the corrosion resistance of protected structure; protected structure can normally be used in having the work condition environment of aggressive atmosphere and corrosion does not take place, thereby prolong the work-ing life of protected structure effectively.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 shows the partial cutaway schematic of the hydraulic cylinder piston rod of first kind of structure of the prior art;
Fig. 2 shows the partial cutaway schematic of the hydraulic cylinder piston rod of second kind of structure of the prior art;
Fig. 3 shows the partial cutaway schematic of the hydraulic cylinder piston rod of the third structure of the prior art;
Fig. 4 shows the structural representation according to the embodiment of anticorrosion structure of the present utility model; And
Fig. 5 shows the A place enlarged diagram of the anticorrosion structure of Fig. 4.
Above-mentioned accompanying drawing comprises the following drawings mark:
1, the body of rod; 2, milky white chromium layer; 3, hard chrome coating; 4, nickel layer; 41, semi-bright nickel layer; 42, bright nickel layer.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Referring to Fig. 4 and Fig. 5, anticorrosion structure of the present utility model comprises and is arranged at nickel layer 4, milky white chromium layer 2 and the hard chrome coating 3 that protected structure is outer and set gradually from inside to outside.
Use the technical scheme of present embodiment, 4 pairs of protected structures of nickel layer have the effect of filling and leading up, but make that the allowable defect of protected structure is all covered, thereby reduce protected body structure surface roughness.Nickel layer 4 hardness are not high simultaneously, and are little with protected structure contrast, and therefore, under the condition of getting rid of other influence factors, nickel layer can reach does not have hole and crackle substantially.The milky white chromium layer 2 that forms on nickel layer 4 can be imporous substantially coating like this, and because these milky white chromium layer 2 chemical property are stable, can completely cut off the corrosion of aggressive atmosphere to nickel layer 4.Like this; as the milky white chromium layer 2 of intermediate deposit and nickel layer 4 and hard chrome coating 3 actings in conjunction as overlay coating; greatly strengthen the corrosion resistance of protected structure; protected structure can normally be used in having the work condition environment of aggressive atmosphere and corrosion does not take place, thereby prolong the work-ing life of protected structure effectively.
In order more effectively to improve anticorrosion ability, nickel layer 4 can be the single or multiple lift structure.Single layer structure can adopt nano nickel layer; The nickel layer 4 of the hydraulic cylinder piston rod of present embodiment is a bilayer structure, and as shown in Figure 5, nickel layer 4 comprises semi-bright nickel layer 41 and the bright nickel layer 42 that sets gradually from inside to outside.Above-mentioned semi-bright nickel layer 41 and bright nickel layer 42 have potential difference, and both can constitute microbattery, and semi-bright nickel layer 41 is as negative electrode, and bright nickel layer 42 is as anode.When corrosion takes place, bright nickel layer 42 corrosion earlier, its double bright nickel layer 41 has the certain protection effect, semi-bright nickel layer 41 post-etching, two-layer all after corrosion penetrates protected structure just corrosion can take place, strengthened antiseptic power so effectively.
Certainly, semi-bright nickel layer 41 and bright nickel layer 42 also can be replaced by other functional propertys close electroless nickel layer or chemical Ni-plating layer.Cooperate with milky white chromium layer 2 and hard chrome coating 3 as long as substitute coating, can reach the effect that strengthens corrosion resistance and get final product.
Preferably more than 20 μ m, in the present embodiment, the thickness of semi-bright nickel layer 41 is preferably 12 μ m to the thickness of nickel layer 4 in the scope of 11 μ m to 13 μ m.The thickness of bright nickel layer 42 is preferably 8 μ m in the scope of 7 μ m to 9 μ m.The lower chromium coating of fine and close flawless hardness that milky white chromium layer 2 obtains for the electroplating technology that adopts the low current high-temperature, its thickness is in the scope of 10 μ m to 20 μ m.The thickness of hard chrome coating 3 is in the scope of 20 μ m to 30 μ m.
To shown in Figure 5, the application also provides a kind of liquid presses piston pole as Fig. 4, comprises the body of rod 1 and be arranged at the outer anticorrosion structure of the body of rod 1 that according to the embodiment of the application's liquid presses piston pole anticorrosion structure is above-mentioned anticorrosion structure.Strong, the long service life of the application's hydraulic cylinder piston rod corrosion resistance can normally be used in having the work condition environment of aggressive atmosphere and corrosion not take place.
The application also provides a kind of hydraulic cylinder body (not shown), comprises casing wall and be arranged at the outer anticorrosion structure of casing wall that according to the embodiment of the application's hydraulic cylinder body anticorrosion structure is above-mentioned anticorrosion structure.Its principle and hydraulic cylinder piston rod are basic identical, do not repeat them here.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. an anticorrosion structure is characterized in that, comprises being arranged at nickel layer (4), milky white chromium layer (2) and the hard chrome coating (3) that protected structure is outer and set gradually from inside to outside.
2. anticorrosion structure according to claim 1 is characterized in that, described nickel layer (4) comprises semi-bright nickel layer (41) and the bright nickel layer (42) that sets gradually from inside to outside.
3. anticorrosion structure according to claim 2 is characterized in that, the thickness of described nickel layer (4) is more than 20 μ m.
4. anticorrosion structure according to claim 3 is characterized in that, the thickness of described semi-bright nickel layer (41) is in the scope of 11 μ m to 13 μ m.
5. anticorrosion structure according to claim 3 is characterized in that, the thickness of described bright nickel layer (42) is in the scope of 7 μ m to 9 μ m.
6. anticorrosion structure according to claim 1 is characterized in that, the thickness of described milky white chromium layer (2) is in the scope of 10 μ m to 20 μ m.
7. anticorrosion structure according to claim 1 is characterized in that, the thickness of described hard chrome coating (3) is in the scope of 20 μ m to 30 μ m.
8. anticorrosion structure according to claim 1 is characterized in that, described nickel layer (4) is an electroless nickel layer.
9. a hydraulic cylinder piston rod comprises the body of rod (1) and is arranged at the outer anticorrosion structure of the described body of rod (1), it is characterized in that described anticorrosion structure is each described anticorrosion structure in the claim 1 to 8.
10. a hydraulic cylinder body comprises casing wall and is arranged at the outer anticorrosion structure of described casing wall, it is characterized in that described anticorrosion structure is each described anticorrosion structure in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037397 CN203080094U (en) | 2013-01-22 | 2013-01-22 | Corrosion resistant structure, hydraulic cylinder piston rod and hydraulic cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037397 CN203080094U (en) | 2013-01-22 | 2013-01-22 | Corrosion resistant structure, hydraulic cylinder piston rod and hydraulic cylinder body |
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| Publication Number | Publication Date |
|---|---|
| CN203080094U true CN203080094U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320037397 Expired - Lifetime CN203080094U (en) | 2013-01-22 | 2013-01-22 | Corrosion resistant structure, hydraulic cylinder piston rod and hydraulic cylinder body |
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| Country | Link |
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| CN (1) | CN203080094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790006A (en) * | 2015-04-22 | 2015-07-22 | 江汉石油钻头股份有限公司 | Strengthened composite layer on rotor surface of screw drilling tool and machining process thereof |
| CN107002268A (en) * | 2014-12-19 | 2017-08-01 | 德万波液压有限公司 | Method for the optics data plate and/or mark of rounded material |
-
2013
- 2013-01-22 CN CN 201320037397 patent/CN203080094U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002268A (en) * | 2014-12-19 | 2017-08-01 | 德万波液压有限公司 | Method for the optics data plate and/or mark of rounded material |
| CN104790006A (en) * | 2015-04-22 | 2015-07-22 | 江汉石油钻头股份有限公司 | Strengthened composite layer on rotor surface of screw drilling tool and machining process thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
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| CX01 | Expiry of patent term |