CN105803498A - Method for improving binding force of electroplated coating of surface of piston rod - Google Patents
Method for improving binding force of electroplated coating of surface of piston rod Download PDFInfo
- Publication number
- CN105803498A CN105803498A CN201610263587.4A CN201610263587A CN105803498A CN 105803498 A CN105803498 A CN 105803498A CN 201610263587 A CN201610263587 A CN 201610263587A CN 105803498 A CN105803498 A CN 105803498A
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- China
- Prior art keywords
- piston rod
- binding force
- roughness
- finish turning
- rough
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-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a method for improving the binding force of an electroplated coating of the surface of a piston rod and relates to the technical field of strengthening of surfaces of piston rods. The method includes the following steps that firstly, a common lathe is used for rough lathing; secondly, a numerical control lathe is used for finish lathing, and the surface roughness of the piston rod obtained after finish lathing is required to be Ra 0.8-1.6; thirdly, chromium plating is conducted in the surface of the piston rod processed in the second step, and the thickness ranges from 0.03 mm to 0.05 mm; and fourthly, the piston rod processed in the third step is polished, and the surface roughness of the polished piston rod is Ra 0.4. The method has the beneficial effects that the binding force of the plated coating is importantly affected through a material surface rough structure, the roughness degree of the surface is changed by reasonably designing roughness characteristics of the surface of the piston rod, the shear resisting capability of the plated coating and the surface of the piston rod is improved, and therefore the binding force of the electroplated coating on the surface of the piston rod is improved, and the strength of the surface of the piston rod is greatly improved. The method is simple in step, and the machining cost is greatly reduced.
Description
Technical field
The present invention relates to piston rod surface reinforcement technique field, specifically a kind of piston rod surface electrodeposited coating that improves is tied
The method made a concerted effort.
Background technology
Piston rod major applications is in oil cylinder, cylinder moving execution unit, and motion is frequent, technology will to be one
Seek high moving component.As a example by hydraulic jack, by: a few part of cylinder barrel, piston rod, piston, end cap forms.
The quality of its crudy directly affects the life and reliability of whole product.Piston rod processing request is high, its table
Surface roughness requires to be Ra0.4～0.8um, requires strict to axiality, wearability.
Traditional hydraulic cylinder piston rod surface reinforcing method has surface ceramic hardening process, plating hard chromium, salt bath
Heat treating process, thermal Sperayed Ceramic Coatings method etc., thermal spraying and plating are all by the way of the method for physical attachment
Forming layer of surface wear-resisting coating at piston rod surface, substrate is more weak with the adhesion being coated with interlayer, it is impossible to bears and cuts
Shearing stress, thus easily come off, and when electroplating hard chromium, plating solution is very big to the pollution of environment, and pass through
The mode of heat treatment can only slightly improve the surface strength of piston rod, and the method piston rod surface intensity distributions
Uneven.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the present invention provides a kind of and improves piston rod surface electrodeposited coating knot
The method made a concerted effort, improves piston rod surface electrodeposited coating adhesion, is greatly improved the surface strength of piston rod, processing
Method is simple, and processing cost is low.
The present invention realizes with following technical scheme: a kind of side improving piston rod surface electrodeposited coating adhesion
Method；A kind of method improving piston rod surface electrodeposited coating adhesion；
(1) use engine lathe rough turn,
(2) numerically controlled lathe finish turning, finish turning back piston bar surface roughness requirements Ra0.8～1.6 are used；
(3) at chromium plating in the piston rod surface that step (2) processes, thickness 0.03-0.05mm；
(4) piston rod processed through step (3) is polished, the surface roughness of piston rod after polishing
Ra0.4。
Preferably, rough turn amount of feeding 0.22mm/r in step (1).
Preferably, in step (2), finish turning uses corner radius 0.5mm of lathe tool, cutting speed scope
50～100m/min, the amount of feeding is less than 0.2mm less than or equal to 0.16mm/r, back engagement of the cutting edge.
The invention has the beneficial effects as follows: material surface coarse structure produces material impact to binding force of cladding material, passes through
The rough features of appropriate design piston rod surface, changes the degree of roughness on surface, improves coating and piston rod surface
Anti-shear ability, thus improve the adhesion of piston rod surface electrodeposited coating, the surface being greatly improved piston rod is strong
Degree；Method step is simple, is substantially reduced processing cost.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and the protection of the present invention is not limited to embodiment.
Embodiment 1
A kind of method improving piston rod surface electrodeposited coating adhesion；
(1) use engine lathe rough turn, rough turn amount of feeding 0.22mm/r；
(2) using numerically controlled lathe finish turning, finish turning uses corner radius 0.5mm of lathe tool, cutting speed
Scope 55m/min, the amount of feeding is less than 0.2mm, finish turning back piston less than or equal to 0.16mm/r, back engagement of the cutting edge
Bar surface roughness requirements Ra1.6；
(3) at chromium plating in the piston rod surface that step (2) processes, thickness 0.03mm；
(4) piston rod processed through step (3) is polished, the rough surface of piston rod after polishing
Degree Ra0.4.
After testing, improve coating and the anti-shear ability of piston rod surface, be greatly improved the surface strength of piston rod.
Embodiment 2
A kind of method improving piston rod surface electrodeposited coating adhesion；
(1) use engine lathe rough turn, rough turn amount of feeding 0.22mm/r；
(2) using numerically controlled lathe finish turning, finish turning uses corner radius 0.5mm of lathe tool, cutting speed model
Enclosing 80m/min, the amount of feeding is less than 0.2mm, finish turning back piston bar less than or equal to 0.16mm/r, back engagement of the cutting edge
Surface roughness requirements Ra1.2；
(3) at chromium plating in the piston rod surface that step (2) processes, thickness 0.04mm；
(4) piston rod processed through step (3) is polished, the surface roughness of piston rod after polishing
Ra0.4。
After testing, improve coating and the anti-shear ability of piston rod surface, be greatly improved the surface strength of piston rod.
Embodiment 3
A kind of method improving piston rod surface electrodeposited coating adhesion；
(1) use engine lathe rough turn, rough turn amount of feeding 0.22mm/r；
(2) using numerically controlled lathe finish turning, finish turning uses corner radius 0.5mm of lathe tool, cutting speed model
Enclosing 100m/min, the amount of feeding is less than 0.2mm, finish turning back piston bar less than or equal to 0.16mm/r, back engagement of the cutting edge
Surface roughness requirements Ra0.9；
(3) at chromium plating in the piston rod surface that step (2) processes, thickness 0.04mm；
(4) piston rod processed through step (3) is polished, the surface roughness of piston rod after polishing
Ra0.4。
After testing, improve coating and the anti-shear ability of piston rod surface, be greatly improved the surface strength of piston rod.
Claims (3)
1. the method improving piston rod surface electrodeposited coating adhesion；It is characterized in that:
(1) use engine lathe rough turn,
(2) numerically controlled lathe finish turning, finish turning back piston bar surface roughness requirements Ra0.8～1.6 are used；
(3) at chromium plating in the piston rod surface that step (2) processes, thickness 0.03-0.05mm；
(4) piston rod processed through step (3) is polished, the rough surface of piston rod after polishing
Degree Ra0.4.
A kind of method improving piston rod surface electrodeposited coating adhesion the most according to claim 1；Its
It is characterised by: rough turn amount of feeding 0.22mm/r in step (1).
A kind of method improving piston rod surface electrodeposited coating adhesion the most according to claim 1；Its
Be characterised by: in step (2) finish turning use lathe tool corner radius 0.5mm, cutting speed scope 50～
100m/min, the amount of feeding is less than 0.2mm less than or equal to 0.16mm/r, back engagement of the cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263587.4A CN105803498A (en) | 2016-04-26 | 2016-04-26 | Method for improving binding force of electroplated coating of surface of piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263587.4A CN105803498A (en) | 2016-04-26 | 2016-04-26 | Method for improving binding force of electroplated coating of surface of piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105803498A true CN105803498A (en) | 2016-07-27 |
Family
ID=56457636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610263587.4A Pending CN105803498A (en) | 2016-04-26 | 2016-04-26 | Method for improving binding force of electroplated coating of surface of piston rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN105803498A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570967A (en) * | 2017-08-22 | 2018-01-12 | 哈尔滨工业大学 | A kind of manufacturing process of Wolter I types precision mandrel |
| CN109112592A (en) * | 2017-06-26 | 2019-01-01 | 张强 | A kind of chrome-plated process method |
| CN109183091A (en) * | 2018-10-26 | 2019-01-11 | 成都科力夫科技有限公司 | A kind of Vehicular engine accessory manufacturing method |
| CN112192458A (en) * | 2020-09-28 | 2021-01-08 | 中国航发贵州黎阳航空动力有限公司 | Processing method for roughness of liner after chromium plating and polishing wheel |
| CN115301524A (en) * | 2022-06-15 | 2022-11-08 | 江苏新合益机械有限公司 | Densification treatment method for piston rod surface |
-
2016
- 2016-04-26 CN CN201610263587.4A patent/CN105803498A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112592A (en) * | 2017-06-26 | 2019-01-01 | 张强 | A kind of chrome-plated process method |
| CN107570967A (en) * | 2017-08-22 | 2018-01-12 | 哈尔滨工业大学 | A kind of manufacturing process of Wolter I types precision mandrel |
| CN109183091A (en) * | 2018-10-26 | 2019-01-11 | 成都科力夫科技有限公司 | A kind of Vehicular engine accessory manufacturing method |
| CN112192458A (en) * | 2020-09-28 | 2021-01-08 | 中国航发贵州黎阳航空动力有限公司 | Processing method for roughness of liner after chromium plating and polishing wheel |
| CN115301524A (en) * | 2022-06-15 | 2022-11-08 | 江苏新合益机械有限公司 | Densification treatment method for piston rod surface |
| CN115301524B (en) * | 2022-06-15 | 2023-10-03 | 江苏新合益机械有限公司 | Densification treatment method for surface of piston rod |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |
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| WD01 | Invention patent application deemed withdrawn after publication |