CN102553808A - Process of rust prevention for piston rod by using high melting-point wax for sealing microcracks of chrome coating - Google Patents
Process of rust prevention for piston rod by using high melting-point wax for sealing microcracks of chrome coating Download PDFInfo
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- CN102553808A CN102553808A CN2012100241865A CN201210024186A CN102553808A CN 102553808 A CN102553808 A CN 102553808A CN 2012100241865 A CN2012100241865 A CN 2012100241865A CN 201210024186 A CN201210024186 A CN 201210024186A CN 102553808 A CN102553808 A CN 102553808A
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- piston rod
- microcracks
- chrome coating
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- wax
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Abstract
The invention relates to a process of rust prevention for a piston rod by using high melting-point wax for sealing microcracks of a chrome coating. The wax with a melting point higher than 50 DEG C is selected to be melted, the piston rod is placed into the melted liquid wax for treatment, in order to thoroughly remove water remaining in the microcracks of the chrome coating, treatment temperature is increased to above 150 DEG C until bubbles in the chrome coating are completely removed, treatment time is directly related to the temperature, the liquid wax is fine in permeability when the temperature is high and more easily permeates into all the microcracks of the chrome coating, the liquid wax is solidified in the microcracks of the chrome coating after the piston rod is treated, all air passages for matrix metal and the outside are sealed, and air and water are stopped from penetrating through the microcracks and reaching the matrix metal, so that the matrix metal is protected from corrosion. Rust prevention is performed for the piston rod by using the high melting-point wax for sealing the microcracks of the chrome coating, the corrosion resistance of the hydraulic piston rod is improved, and the service life of the hydraulic piston rod is prolonged in a multiplied manner.
Description
Technical field
The invention belongs to the metal protection technical field, relate to a kind of technology that adopts high melting point paraffin sealing chromium layer micro-crack piston rod to be carried out antirust processing.
Background technology
Engineering chromium plating (being commonly called as hard chrome plating) is mainly used in and produces liquid presses piston pole, rolls rod etc., is ripe production technology.Like Fig. 1, Fig. 2 and shown in Figure 3, the chromium layer non-corrosive that plates out, but owing in the chromium coating 2 a lot of micro-cracks 3 are arranged, empty G&W passes crackle and arrives parent metal 1, makes parent metal 1 corrosion, forms bubbling 5, and the chromium pull-up falls, and workpiece is scrapped.Even the liquid presses piston pole that processes is stamped butter, carry out safeguard measure, because sea surface oil slick is broken through in the vaporization of the moisture in the chromium layer micro-crack, also can scrap because of getting rusty.The liquid presses piston pole of domestic production now in milky white chromium of plated underlayer or nickel plating, utilizes the compactness of milky white chromium and nickel for antirust, sealing parent metal 1, the antirust ability of raising liquid presses piston pole.But plating milky white chromium and must use standard chromium plating solution, be elevated to temperature more than 65 ℃, just can plate out milky white chromium, is the technology of high energy consumption high pollution; Antirust ability is also undesirable, and the adhesion of nickel plating is not high, comes off easily; Existing technical barrier, cost are also high, more than two kinds of method Electroplate Factories all be reluctant to adopt; So that the liquid presses piston pole of producing now all can not be antirust, and the many engineers and technicians in the whole nation are striving to find the rust-proofing method of liquid presses piston pole, in order to replace the compound chromium of expensive high pollution; Matrix material have to be done with stainless steel in order to produce the piston rod that can in marine climate, use by many producers, has increased a large amount of production costs.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the present invention provides the high dewaxing sealing of a kind of usefulness that can improve the antiseptic power of engineering chromium-plated part and prolong its service life chromium layer micro-crack carries out antirust processing to piston rod technology.
The present invention solves the technical method that its technical problem adopts: the high dewaxing sealing of a kind of usefulness chromium layer micro-crack be to the technology that piston rod carries out antirust processing, chooses the paraffin that fusing point is higher than 50 ℃ and melt, and then piston rod put into molten wax liquid and handle; For the aqueous vapor that is trapped in the chromium layer micro-crack can thoroughly be got rid of, be elevated to treatment temperature more than 150 ℃, till the bubble in the chromium layer goes out to the greatest extent; The length in processing time is directly related with the temperature height; Wax liquid good penetrability when temperature is high is penetrated in all micro-cracks of chromium coating more easily, and piston rod after treatment; Wax liquid is set in the micro-crack of chromium layer; Sealed parent metal and all extraneous air ducts, stop empty G&W to pass crackle and arrive parent metal, thereby the protection parent metal has not been by corrosion.
The invention has the beneficial effects as follows: adopt high melting point paraffin sealing chromium layer micro-crack that piston rod is carried out antirust processing; Improve the anti-corrosion capability of liquid presses piston pole; Through 380 hours lights as new of neutral salt spray test, there is not rust spot, can prolong the service life of liquid presses piston pole at double.
Description of drawings
Fig. 1 is the sketch map that the chromium coating of existing engineering chromium-plated part produces micro-crack;
Fig. 2 is the sketch map that steam passes the chromium coating etched the matrix metal of existing engineering chromium-plated part;
Fig. 3 is the sketch map of the parent metal seriously corroded of existing engineering chromium-plated part when becoming bubbling.
1-parent metal among the figure, 2-chromium coating, 3-micro-crack, 4-hot spot, 5-bubbling.
The specific embodiment
Below in conjunction with embodiment the present invention is further specified.
The high dewaxing sealing of a kind of usefulness chromium layer micro-crack selects for use fusing point to be higher than 50 ℃, to be solid-state paraffin at normal temperatures to the technology that piston rod carries out antirust processing, requires melting point of paraffin wax high as far as possible; Molecule is as far as possible little, and the fusing of heating is put into molten wax liquid with piston rod then and carried out antirust processing; For the aqueous vapor that is trapped in the chromium layer micro-crack 3 can thoroughly be got rid of, be elevated to treatment temperature more than 150 ℃, time length is directly related with the temperature height; Till bubble in the chromium layer goes out to the greatest extent, after emptying is trapped in the aqueous vapor in the chromium layer micro-crack 3 fully, cooling under field conditions (factors); Wax liquid is set in the chromium layer micro-crack 3; Wax liquid good penetrability when temperature is high is penetrated in all micro-cracks 3 of chromium coating 2 more easily, sealing parent metal 1 and all extraneous air ducts; Stop empty G&W to pass crackle and arrive parent metal 1, thereby protection parent metal 1 is not by corrosion.When utilizing the present invention to handle liquid presses piston pole, adopt general ferrous materials to carry out normal hard chrome plating and get final product.
After the present invention handles, can improve the anti-corrosion capability of liquid presses piston pole, prolonged the service life of liquid presses piston pole.Making piston rod reach due antirust ability with simple effective method, is the aftertreatment technology of chrome-plated process, can improve the total quality of of home make hydraulic jack.
Claims (1)
- One kind with high dewaxing sealing chromium layer micro-crack to the technology that piston rod carries out antirust processing, it is characterized in that: choose the paraffin that fusing point is higher than 50 ℃ and melt, then piston rod is put into molten wax liquid and handle; For the aqueous vapor that is trapped in the chromium layer micro-crack can thoroughly be got rid of, be elevated to treatment temperature more than 150 ℃, till the bubble in the chromium layer goes out to the greatest extent; The length in processing time is directly related with the temperature height; Wax liquid good penetrability when temperature is high is penetrated in all micro-cracks of chromium coating more easily, and piston rod after treatment; Wax liquid is set in the micro-crack of chromium layer; Sealed parent metal and all extraneous air ducts, stop empty G&W to pass crackle and arrive parent metal, thereby the protection parent metal has not been by corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100241865A CN102553808A (en) | 2012-02-04 | 2012-02-04 | Process of rust prevention for piston rod by using high melting-point wax for sealing microcracks of chrome coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100241865A CN102553808A (en) | 2012-02-04 | 2012-02-04 | Process of rust prevention for piston rod by using high melting-point wax for sealing microcracks of chrome coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102553808A true CN102553808A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100241865A Pending CN102553808A (en) | 2012-02-04 | 2012-02-04 | Process of rust prevention for piston rod by using high melting-point wax for sealing microcracks of chrome coating |
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| CN (1) | CN102553808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436306A (en) * | 2018-05-04 | 2019-11-12 | 奥的斯电梯公司 | Band coating rope sheave |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-02-04 CN CN2012100241865A patent/CN102553808A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 程明学等: "飞机起落架减震支柱漏油故障分析及修复工艺", 《液压与气动》, no. 6, 15 December 1999 (1999-12-15), pages 44 - 45 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436306A (en) * | 2018-05-04 | 2019-11-12 | 奥的斯电梯公司 | Band coating rope sheave |
| CN110436306B (en) * | 2018-05-04 | 2021-08-13 | 奥的斯电梯公司 | Coated rope sheave |
| US11111108B2 (en) | 2018-05-04 | 2021-09-07 | Otis Elevator Company | Coated sheave |
| EP3564180B1 (en) * | 2018-05-04 | 2022-06-29 | Otis Elevator Company | Coated sheave |
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Application publication date: 20120711 |