CN103934736A - Method For Performing Surface Treatment On Piston Rod Of Hydraulic Cylinder - Google Patents
Method For Performing Surface Treatment On Piston Rod Of Hydraulic Cylinder Download PDFInfo
- Publication number
- CN103934736A CN103934736A CN201310601156.0A CN201310601156A CN103934736A CN 103934736 A CN103934736 A CN 103934736A CN 201310601156 A CN201310601156 A CN 201310601156A CN 103934736 A CN103934736 A CN 103934736A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- polishing
- plating
- hydraulic cylinder
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
- B24B29/08—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction the cross-section being circular, e.g. tubes, wires, needles
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/01—Pistons; Trunk pistons; Plungers characterised by the use of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
Abstract
The invention provides a method for performing surface treatment on surface of a piston rod of a hydraulic cylinder. The method comprises the steps of: performing first polishing on the surface of the piston rod through utilizing a rotating polishing wheel; after first polishing is performed, plating hard chrome on the surface of the piston rod; after plating is performed, heating the piston rod through placing the piston rod in a heating furnace and furthermore cooling the piston rod; and after heating of the piston rod is performed, performing secondary polishing on the plated surface of the piston rod through utilizing the polishing wheel.
Description
Cross reference
The present invention advocates the rights and interests of on January 21st, 2013 in the 10-2013-0006491 korean patent application case of Department of Intellectual Property of Korea S application, and the disclosure of described application case is incorporated herein by reference in full.
Technical field
One or more embodiment of the present invention relate to hydraulic cylinder, and more particularly relate to the surface-treated method of hydraulic cylinder piston rod.
Background technology
In general, hydraulic cylinder is a kind of mechanical organ, when it moves at piston because by the hydraulic drive of fluid, by receiving the movement of piston via piston rod and produce mechanical reciprocating motion in hydraulic cylinder, described fluid is that the hydraulic pressure by producing from hydraulic pump is injected into hydraulic cylinder.
By this way, in hydraulic cylinder, the element moving back and forth by hydraulic pressure is piston rod and piston.But, moving back and forth the destination county of circulation, piston rod and piston are with relatively high impulsive force and the piston rod cap and the top cover collision that are arranged in hydraulic cylinder terminal.
Form the piston rod of hydraulic cylinder and be and maintaining the member that the bubble-tight while moves back and forth along the path being arranged on the piston rod cap of hydraulic cylinder.And the various component combinations such as such as piston, piston nut and packing ring are on the excircle of piston rod.Therefore, should prevent that foreign material or damage (for example, cut) are attached to the excircle of piston rod.Therefore, the excircle of piston rod is carried out to polishing technique.2010-0063482 Korea S publication discloses the example that is applicable to the polishing device that polishes technique.
The polishing of the following piston rod of carrying out hydraulic cylinder: in the prior art, carry out polishing technique after mechanical treatment hydraulic cylinder.Then, hard chrome plating is carried out in the surface of piston rod.To plating the surface of piston rod of hard chrome carry out another polishing.
Have rough surface by the piston rod that uses the surface-treated conventional method of hydraulic cylinder to manufacture, this is because can produce crack in the polishing technique of carrying out in plating cross section after shikishima plating process.
Therefore,, by improving the surface-treated method of hydraulic cylinder piston rod, embodiments of the invention provide the surface-treated method of the hydraulic cylinder piston rod that is performed soft plating.
Summary of the invention
The surface-treated method that one or more embodiment of the present invention comprise hydraulic cylinder piston rod.
Additional aspect is set forth in part in following description, and by apparent from described description part, maybe can pass through the practice of presented embodiment and understand.
According to one or more embodiment of the present invention, a kind of surface-treated method of the piston rod for hydraulic cylinder, described method comprises: the polishing wheel rotating by use and to carrying out the first polishing in the surface of described piston rod; Plating hard chrome on described surface at described piston rod after carrying out described the first polishing; After carrying out described plating, heat described piston rod and make it cooling by during described piston rod is placed on to heating furnace; And by using described polishing wheel, the plating surface of described piston rod is carried out to the second polishing after the described heating of carrying out described piston rod.
Described heating is carried out at can the temperature in the scope of approximately 170 DEG C to approximately 190 DEG C and is lasted four hours.
Can be air cooling method in the described cooling means of hankering carrying out that adds.
The described polishing wheel using in described the first polishing or described the second polishing can have the flush coat being formed by the rubber of strengthening with piano wire.
The described polishing wheel using in described the first polishing or described the second polishing can have flush coat, wherein Cr
2o
3powder is combined with the non-filament of knitting as buffing compound.
Brief description of the drawings
By reference to the accompanying drawings, according to the following description of embodiment, these and/or other side will become apparent and be easier to understand.
Fig. 1 is the flow chart of the surface-treated method of hydraulic cylinder piston rod according to an embodiment of the invention.
The cross-sectional structure of the polishing wheel using in the first polishing technique of the flow chart of Fig. 2 exploded view 1 or the second polishing technique.
Fig. 3 shows another cross-sectional structure corresponding to the polishing wheel of the polishing wheel of Fig. 2.
Fig. 4 shows the surperficial scanning electron microscope image of the piston rod of manufacturing by the method shown in use Fig. 1 and conventional method respectively.
[main element label declaration]
10: polishing wheel
20: supporting-core
30: elastic layer
40: flush coat
S10: the first polishing operation
S20: plating operation
S30: heating operation
S40: the second polishing operation
Detailed description of the invention
With detailed reference to embodiment, the example is illustrated in the accompanying drawings.
Fig. 1 is the flow chart of the surface-treated method of hydraulic cylinder piston rod according to an embodiment of the invention.The cross-sectional structure of the polishing wheel 10 using in the first polishing technique of the flow chart of Fig. 2 exploded view 1 or the second polishing technique.Another cross-sectional structure of the polishing wheel 10 of Fig. 3 exploded view 2.Fig. 4 shows the surperficial scanning electron microscope image of the piston rod of manufacturing by the method shown in use Fig. 1 and conventional method respectively.
Referring to Fig. 1, to Fig. 4, the surface-treated method of hydraulic cylinder piston rod comprises the first polishing operation S10, plating operation S20, heating operation S30 and the second polishing operation S40 according to an embodiment of the invention.
In the first polishing operation S10, the polishing wheel 10 rotating by use carries out polishing to the surface of the piston rod forming by casting or mechanical technology.The polishing wheel 10 using in the first polishing operation S10 can have the structure that Fig. 2 and Fig. 3 describe.The supporting-core 20 being formed by metals such as such as aluminium is arranged on the middle section of the polishing wheel 10 that Fig. 2 describes.Elastic layer 30 is arranged on the radial direction of supporting-core 20 along the excircle of supporting-core 20.Elastic layer 30 is through arranging to make homogeneous pressure be applied to the surface of piston rod in polishing technique.Elastic layer 30 can for example, be formed by () sponge material.Flush coat 40 is along the excircle of elastic layer 30 and arrange.Flush coat 40 can be formed by the rubber of strengthening with piano wire.Piano wire is the high-tensile steel wires that formed by high-carbon steel.Compared with the flush coat 40 being formed by conventional sand paper, in the time that flush coat 40 is formed by rubber, flush coat 40 can produce less cut (for example, crack) on the surface of piston rod.Supporting-core 20 is arranged on the central authorities of the polishing wheel 10 of Fig. 3.And flush coat 40 can arrange along the excircle of supporting-core 20.The flush coat 40 of Fig. 3 can pass through Cr
2o
3powder is combined in as buffing compound on the filament being formed by nonwoven fabric and forms.Be used in conjunction with nonwoven fabric and Cr
2o
3the bonding agent of powder can be polyvinyl alcohol (polyvinyl alcohol, PVA).The polishing wheel 10 of Fig. 3 forms as follows: by the ratio mixed C r by 80%:20%
2o
3powder and liquid resin and form the first mixture.Then, form the second mixture, be wherein the Cr of pulverulence
2o
3or another buffing compound, the non-adhesive of knitting filament, liquid resin and being liquid form that is pulverulence mix by the ratio of 40%:30%:10%:20%.After mixing the first mixture and the second mixture, the mixture of the first mixture and the second mixture is watered in mold.Therefore, polishing wheel is manufactured.In the time that the outer surface by the molded polishing wheel of manufacturing is coarse, can carries out post processing to outer surface by the lath with general and gently process described outer surface.
After carrying out the first polishing operation S10, carry out plating operation S20.In plating operation S20, by hard chrome plating on the surface of piston rod.The method for plating using in plating operation S20 can be conventional hard-chrome plating coating method, and therefore the descriptions thereof are omitted.
After carrying out plating operation S20, carry out heating operation S30.Heating operation S30 is the important process that aspect of the present invention is characterized.In heating operation S30, piston rod is placed in heating furnace and heats described piston rod.Under can the heating-up temperature in the scope of approximately 170 DEG C to approximately 190 DEG C, carry out heating operation S30 and last four hours.In heating operation S30, when heating-up temperature is during lower than 170 DEG C, may be difficult for the mobile crack being present in plating surface.In the time that heating-up temperature exceedes 190 DEG C, the mobile of crack may be too fast.Under this situation, crack can be bonded to each other, and therefore can form bad large fracture.In heating operation S30, as the result that repeats experiment, the heat time of four hours is regarded as the best heat time.The cooling means of carrying out in heating operation S30 can be air cooling method.In heating operation S30, by after being placed on the heating of piston rod in heating furnace, the Men Eryong air by opening heating furnace is by piston rod cool to room temperature.Observe the crack forming by heating operation S30 in the first polishing operation S10 or plating operation S20 and bonded to each other.
After carrying out heating operation S30, carry out the second polishing operation S40.In the second polishing operation S40, by the plating surface of piston rod being carried out to polishing with polishing wheel 10.The polishing wheel 10 using in the second polishing operation S40 can be the same polishing wheel 10 using in the first polishing operation S10.Observing the crack forming in the surface of piston rod seals by the second polishing operation S40.
Fig. 4 shows the surperficial scanning electron microscope image of the piston rod of the hydraulic cylinder of manufacturing by said method.Referring to Fig. 4, compared with surface by using the piston rod manufactured of conventional method, by using the surface display unconspicuous crack vestige of the piston rod of manufacturing according to the method for the present embodiment and showing smooth surface.The surperficial surface-treated method of the piston rod of hydraulic cylinder can provide the piston rod with improved surface roughness and smooth surface structure by being sealed in the crack forming in the surface of piston rod according to an embodiment of the invention.That is to say, the surperficial surface-treated method of piston rod allows the crack that forms in the surface of piston rod after plating hard chrome on the surface of piston rod bonded to each other by heating operation according to an embodiment of the invention, and then carry out polishing operation and there is the plating surface of unconspicuous crack vestige and smooth surface to form, and therefore the piston rod with high surface characteristic can be provided.
Should be understood that example embodiment described herein should be only considers and should be for the object of restriction in descriptive sense.Conventionally should be considered as can be used for other similar characteristics or the aspect in other embodiment to the description of the feature in each embodiment or aspect.
Although with reference to graphic description one or more embodiment of the present invention, but those skilled in the art will appreciate that, in the situation that not departing from defined by the appended claims the spirit and scope of the present invention, can carry out to the present invention the various changes of form and details.
Claims (5)
1. for a surface-treated method for the piston rod of hydraulic cylinder, described method comprises:
The polishing wheel rotating by use and to carrying out the first polishing in the surface of described piston rod;
Plating hard chrome on described surface at described piston rod after carrying out described the first polishing;
After carrying out described plating, heat described piston rod and make it cooling by during described piston rod is placed on to heating furnace; And
After the described heating of carrying out described piston rod, by using described polishing wheel, the plating surface of described piston rod is carried out to the second polishing.
2. method according to claim 1, wherein said heating is to carry out and last four hours at the temperature in the scope of 170 DEG C to 190 DEG C.
3. method according to claim 1, wherein described add hanker carry out cooling means be air cooling method.
4. method according to claim 1, the described polishing wheel using in wherein said the first polishing or described the second polishing has the flush coat being formed by the rubber of strengthening with piano wire.
5. method according to claim 1, the described polishing wheel using in wherein said the first polishing or described the second polishing has flush coat, wherein Cr
2o
3powder is combined with the non-filament of knitting as buffing compound.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130006491A KR101433264B1 (en) | 2013-01-21 | 2013-01-21 | A Surface treatment method for rod of hydraulic cylinder |
| KR10-2013-0006491 | 2013-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103934736A true CN103934736A (en) | 2014-07-23 |
Family
ID=51182748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310601156.0A Pending CN103934736A (en) | 2013-01-21 | 2013-11-25 | Method For Performing Surface Treatment On Piston Rod Of Hydraulic Cylinder |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101433264B1 (en) |
| CN (1) | CN103934736A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590810B (en) * | 2018-11-19 | 2020-08-21 | 西安近代化学研究所 | Self-adaptive polishing method for inner wall surface of arc-head revolving body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320947A (en) * | 1992-05-18 | 1993-12-07 | Kowa Kogyosho:Kk | Manufacture of cylinder rod |
| CN101851760A (en) * | 2010-06-11 | 2010-10-06 | 韶关市武江区福兴机械配件有限公司 | Process for performing hydrogen-removing and rust-preventing treatment on engineering chromium-plated part by using high temperature-resistant grease |
| CN101862940A (en) * | 2010-05-17 | 2010-10-20 | 隆昌山川精密焊管有限责任公司 | Manufacturing process of corrosion-resistant piston rod of shock absorber for vehicle |
| CN102152068A (en) * | 2011-01-30 | 2011-08-17 | 三一重工股份有限公司 | Method for manufacturing piston rod |
| KR101065059B1 (en) * | 2008-12-03 | 2011-09-15 | 동양기전 주식회사 | Buffing machine for grinding hydraulic cylinder |
| CN102384266A (en) * | 2011-10-21 | 2012-03-21 | 贵阳白云高原紧固件有限公司 | Multifunctional crown block piston rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05311467A (en) * | 1992-05-13 | 1993-11-22 | Komatsu Zenoah Co | Surface treatment of piston rod |
| JPH0610183A (en) * | 1992-06-24 | 1994-01-18 | Komatsu Zenoah Co | Treatment for improving corrosion resistance of piston rod |
| JP2006187818A (en) * | 2004-12-31 | 2006-07-20 | Yasuda Sansho Kk | Buff |
-
2013
- 2013-01-21 KR KR1020130006491A patent/KR101433264B1/en active IP Right Grant
- 2013-11-25 CN CN201310601156.0A patent/CN103934736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320947A (en) * | 1992-05-18 | 1993-12-07 | Kowa Kogyosho:Kk | Manufacture of cylinder rod |
| KR101065059B1 (en) * | 2008-12-03 | 2011-09-15 | 동양기전 주식회사 | Buffing machine for grinding hydraulic cylinder |
| CN101862940A (en) * | 2010-05-17 | 2010-10-20 | 隆昌山川精密焊管有限责任公司 | Manufacturing process of corrosion-resistant piston rod of shock absorber for vehicle |
| CN101851760A (en) * | 2010-06-11 | 2010-10-06 | 韶关市武江区福兴机械配件有限公司 | Process for performing hydrogen-removing and rust-preventing treatment on engineering chromium-plated part by using high temperature-resistant grease |
| CN102152068A (en) * | 2011-01-30 | 2011-08-17 | 三一重工股份有限公司 | Method for manufacturing piston rod |
| CN102384266A (en) * | 2011-10-21 | 2012-03-21 | 贵阳白云高原紧固件有限公司 | Multifunctional crown block piston rod |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140094153A (en) | 2014-07-30 |
| KR101433264B1 (en) | 2014-08-25 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB02 | Change of applicant information |
Address after: Inchon, South Korea, Wan Dong City, South District, South cave West Road, 362 times Road, 36 Applicant after: DY Corp. Address before: South Korea, Inchon, Wan Dong, South cave area, South Village cave, 616-4 times Applicant before: Dongyang Mechatronics Corp. |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160512 Address after: South Korea celebrates Chang Changwon City Mountain Bear road 812 (St. live hole) Applicant after: DY POWER Corp. Address before: Inchon, South Korea, Wan Dong City, South District, South cave West Road, 362 times Road, 36 Applicant before: DY Corp. |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140723 |
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| WD01 | Invention patent application deemed withdrawn after publication |