CN103894778A - Novel reducing reshaping technology for mining oil cylinder - Google Patents
Novel reducing reshaping technology for mining oil cylinder Download PDFInfo
- Publication number
- CN103894778A CN103894778A CN201410128674.XA CN201410128674A CN103894778A CN 103894778 A CN103894778 A CN 103894778A CN 201410128674 A CN201410128674 A CN 201410128674A CN 103894778 A CN103894778 A CN 103894778A
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- China
- Prior art keywords
- oil cylinder
- cylinder
- undergauge
- heating
- cylinder body
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- 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
-
- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
Abstract
The invention provides a novel reducing reshaping technology for a mining oil cylinder. According to a 'metal heat expansion and cold contraction effect', the inner wall of the oil cylinder is quickly heated by a medium-frequency induction heating device, an external cylinder body is rapidly cooled down by spraying water, and a reducing result of the oil cylinder is realized. The shape of the original cylinder body of the oil cylinder which is reshaped by using the technology is not required to be changed, other materials are not required to be additionally filled in the inner wall of the cylinder body, steel and funds are saved, and the cylinder body of the reshaped oil cylinder completely meets using requirements. The technology can also be used for other mechanical processing plants, and is used for repairing and reshaping cylinder body parts which are accidentally scrapped due to machining; the funds of an enterprise are saved; and the benefit is improved.
Description
Affiliated technical field
The present invention relates to mining oil cylinder undergauge and reproduce shaping new technology, belong to and reproduce shaping new technical field.
Background technology
Adopt universal at coal industry along with combining, maintenance, the maintenance amount of combining oil recovery cylinder are very huge.In the process of oil cylinder maintenance, maintenance, pull oil cylinder inside, corrosion, wearing and tearing are overproof, the phenomenons such as cylinder that rise are very general.Being engaged in coal production enterprise and maintenance company can address this problem in the urgent need to a kind of new technology.The at present both at home and abroad solution to this problem, mainly contain following several mode: part is scrapped, more renewed in (1); (2) adopt melting and coating technique and interior coating stainless steel cover technology etc.; (3) expand cylinder diameter, use profiled seal instead, promptness, security that this method is prepared, keeped in repair to the spare part of manufacturing enterprise have all caused inconvenience, and due to the particularity requirement of coal production, this way is not accepted by coal mining enterprise.With upper type, owing to there is in various degree high cost, production efficiency is low, and complex process is used the reasons such as unstable, and spread difficulty is very large.
Summary of the invention
For reaching above-mentioned purpose, the present invention proposes a kind of mining oil cylinder undergauge and reproduces shaping new technology, is called for short undergauge reconstruction technique.Use undergauge reconstruction technique to repair the oil cylinder of the problems referred to above, can this difficult problem of easy to do solution.Mining oil cylinder conventional material is 27SiMn, former dispatching from the factory adopts modified heat treatment, because mining oil cylinder is mainly that reparation inner wall of cylinder, external diameter generally do not need processing, so, utilization of the present invention " metal heat-expansion shrinkage effect ", inside wall of cylinder surface metal is undergone phase transition and then reaches to dwindle cylinder diameter object by " interior heating, outer cooling " mode." interior heating " be with intermediate frequency induction heating device to oil cylinder inner wall carry out Fast Heating, make its surface temperature in extremely short transient heating to more than phase transition temperature; " outer cooling " is in heating, thereby outer surface of cylinder block carried out spraying cooling, makes the cylinder surface rapid cooling outside conduction of velocity of cylinder intimate heat that slows down with cooling water, avoids cylinder body dimensional deformation; " undergauge " refers to the heat treatment result producing after metal phase change.Casing wall material internal crystalline structure undergoes phase transition, because the phase transformation of metal structure is to be changed to the large martensitic structure of specific volume by the little tissue of specific volume, the volume part swelling is subject to the constraint in casing wall space, expands laterally limitedly can only inwardly shrink, make casing wall internal diameter to reduce (also claiming undergauge).Casing wall after phase transformation undergauge, its inner original scuffing, corrosion, wearing and tearing are overproof, the phenomenons such as cylinder that rise are all controlled in rational size, and the original heat treatment performance index of cylinder body itself is also without large variation.The follow-up finishing processing of casing wall only need just can complete on honing machine.If adjust the parameters such as relevant heating frequency, translational speed, the type of cooling, just can obtain casing wall undergauge 1-3 millimeter result, be enough to meet the needs that the mining oil cylinder repair and reconstruction of all size is shaped.
Reproduce with this mining oil cylinder that shaping new technology repairs that casing wall, technique are simple, equipment needed thereby cost is low, repairing efficiency is short, restoring oil cylinder remarkable benefit in batch, be conducive to promote the use of on a large scale.Through consulting interrelated data and patent retrieval, there are no the report of correlation technique content.
This mining oil cylinder undergauge of the present invention reproduces shaping new technology, and technical essential is " interior heating, outer cooling, undergauge are by phase transformation ".Described " interior heating " is exactly with medium frequency induction heater, casing wall to be carried out Fast Heating, made more than its surface temperature moment reaches phase transition temperature, under this temperature conditions, metal inside crystalline structure could produce phase transformation---and this is to realize the theoretical foundation that oil cylinder undergauge reproduces; Described " outer cooling " refers in to inboard wall of cylinder block heating, spraying cooling is constantly carried out by continuous cooling water in cylinder body outside, lower the temperature, could control the heat conduction velocity of cylinder body because only have chilling, guarantee that appearance temperature can not rise too high, guarantee that in cylinder body, outside heat, cold effect---this is to realize the important process measure that oil cylinder undergauge reproduces: " undergauge " in described " undergauge is by phase transformation " refers to the heat treatment result producing after metal phase change.Due to casing wall surface temperature more than phase transition temperature, there is crystal transition in its crystal inside tissue, because the phase transformation of metal structure is to be changed to the large martensitic structure of specific volume by the little tissue of specific volume, the volume part swelling is subject to the constraint in casing wall space, expanding laterally and limitedly can only inwardly shrink, make casing wall internal diameter to reduce (also claiming undergauge), is exactly briefly " final result of metal phase change has dwindled cylinder diameter ".Along with eddy-current heating head slowly moves forward, remaining heat generation self tempering phenomenon in casing wall, thus obtain the better low-carbon martensite of performance.Process so the original pearlitic hardness of rear hardness ratio higher, make oil cylinder inner wall more wear-resisting, longer service life.Say in some sense, oil cylinder is after undergauge reproduces the processing of shaping new technology, and performance and life-span have surmounted new oil cylinder.Carefully adjust the relevant parameter such as heating-up temperature, heat time, cooling velocity, cooling water inflow of casing wall, just can all obtain the contracting cylinder effect of expection.
This technology has following characteristics: (1) does not dose any material, has guaranteed the uniformity of oil cylinder material, and maintenance cost is very low, and economic benefit and social benefit are remarkable; (2) technique simple, be convenient to spread; (3) reliable in quality, owing to having adopted the means such as reliable control and monitoring, oil cylinder physical property such as material, hardness, intensity, crystalline phase tissue in undergauge process is all controlled in the scope of national regulation, and this has fundamentally guaranteed to reproduce the quality of oil cylinder; (4) electromagnetic eddy that eddy-current heating head and casing wall surface do not contact, produce by induction coil between the two heats casing wall.Surface temperature when heating detects in real time with Submillineter Wave Technology temperature measurer; (5) recovered life size owing to repairing oil cylinder, this has all created advantage to accessory preparation, maintenance next time.
The technical characterictic that claim 1 provides has solved above-mentioned task.
The specific embodiment
Implement this technology, equipment is not had to specific (special) requirements, existing idle plant equipment (as lathe or lathe bed) is transformed a little.1, to, with chuck, also can drive it at the uniform velocity to rotate for clamping cylinder block; 2, on lathe bed, to have on a V-type supporting seat, seat and be used for supporting cylinder body front portion with two rollers, prevent that its front end is sagging; 3, a sliding platform is set on lathe bed, is driven, can slowly outwards be moved by reducing gear, induction switch board and eddy-current heating head are fixed on above sliding platform; 4, there is cool water shower head cylinder body outside, must be able to guarantee continuously to the outside water spray of cylinder body: 5, by Submillineter Wave Technology temperature measurer detected temperatures when cylinder body heating; 6, after oil cylinder undergauge, put it to again and on oil cylinder honing machine, carry out fine finishining, just can complete oil cylinder and reproduce shaping work.
This mining oil cylinder undergauge reproduces shaping new technology, because the operation principle of institute's foundation is reliable, the technological means such as intermediate frequency induction heating device used, infrared measurement of temperature are mature technologies on market, well-known, the two being combined, form hydraulic cylinder undergauge and reproduce shaping new technology, is a technological innovation of the present invention.Reproduce the oil cylinder of shaping, do not need to change the shape of original cylinder body by this technology, inboard wall of cylinder block does not need additionally to dose other material yet, saves great deal of steel and fund, and cylinder block after reproducing meets instructions for use completely.
Take certain maintenance factory as example, within 1 year, can repair eight cover supports, a set of support has 150 left and right, by there being 19 hydraulic cylinders to calculate on every cover support, probably has 1/3rd hydraulic cylinder to need regeneration.Adopt new technology of the present invention, fix reproduce an oil cylinder only need its market price 1/10 less than.Equipment investment is few, upper detective, and the cycle is short, and Social benefit and economic benefit is fairly obvious.
This mining oil cylinder undergauge reproduces shaping new technology, also can be used for other machining factory, is used for repairing and reproduces because processing the careless cylinder body part of scrapping, and for enterprise saves fund, increases the benefit.
Claims (3)
1. a mining oil cylinder undergauge reproduces shaping new technology, according to " metal heat-expansion shrinkage effect ", casing wall surface metal is undergone phase transition and then reaches to dwindle cylinder diameter object by " interior heating, outer cooling " mode, this technical essential is " interior heating, outer cooling, undergauge are by phase transformation ", it is characterized in that: described " interior heating ' be that intermediate frequency induction heating device is placed in to oil cylinder inner wall, it is carried out to Fast Heating, make its surface temperature in extremely short transient heating to more than phase transition temperature; Described " outer cooling " refer in inboard wall of cylinder block heating, outer surface of cylinder block is carried out spraying cooling, makes cylinder surface rapid cooling with cooling water, thereby in the cylinder body that slows down heat outwards conduction of velocity, avoid cylinder body dimensional deformation; Described " undergauge " refers to the heat treatment result producing after metal phase change, after the transient heating of casing wall surface metal is above to phase transition temperature, because the phase transformation of metal structure is to be changed to the large martensitic structure of specific volume by the little tissue of specific volume, the volume part swelling is owing to can only inwardly shrinking, make casing wall internal diameter to reduce (also claiming undergauge) to the expansion of cylinder body outside is limited.
2. mining oil cylinder undergauge according to claim 1 reproduces shaping new technology, it is characterized in that: the casing wall after phase transformation undergauge, not only its inner original scuffing, corrosion, wearing and tearing are overproof, the phenomenons such as cylinder that rise are all controlled in the reasonable scope, and the original heat treatment performance index of cylinder body itself is also without large variation, the follow-up finishing processing of casing wall only need just can complete on honing machine.
3. mining oil cylinder undergauge according to claim 1 reproduces shaping new technology, it is characterized in that: carefully adjust the parameters such as relevant heating frequency, translational speed, the type of cooling, just can obtain casing wall undergauge 1-3 millimeter result, be enough to meet the needs that the mining oil cylinder repair and reconstruction of all size is shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128674.XA CN103894778B (en) | 2014-04-02 | 2014-04-02 | Mining oil cylinder undergauge reproduces manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128674.XA CN103894778B (en) | 2014-04-02 | 2014-04-02 | Mining oil cylinder undergauge reproduces manufacturing process |
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| CN103894778A true CN103894778A (en) | 2014-07-02 |
| CN103894778B CN103894778B (en) | 2016-07-06 |
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| CN201410128674.XA Active CN103894778B (en) | 2014-04-02 | 2014-04-02 | Mining oil cylinder undergauge reproduces manufacturing process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526252A (en) * | 2015-01-22 | 2015-04-22 | 沈丘县金升电子科技有限公司 | Method for recovering inside diameter dimension of metal pipe through inner circle inductor and metal pipe |
| CN107052702A (en) * | 2016-01-15 | 2017-08-18 | 卡特彼勒公司 | Method and apparatus for repairing cylinder buss |
| CN114905223A (en) * | 2022-04-21 | 2022-08-16 | 山西庞泉重型机械制造有限公司 | Cylinder retracting device capable of circulating in and out and repairing process of cylinder barrel of oil cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057420A (en) * | 1991-07-27 | 1992-01-01 | 新泰市机床附件厂 | Process for restoring oil cylinder by diameter-reducing method |
| CN1058363A (en) * | 1990-07-24 | 1992-02-05 | 任鸿庆 | Cooling thrinkage regeneration technology for waste cylinder sleeve of suction pump in oil field |
| CN1203953A (en) * | 1998-05-02 | 1999-01-06 | 孙虎山 | Heat treatment method of international combustion engine cylinder and its equipment |
| CN101403031A (en) * | 2007-10-07 | 2009-04-08 | 王笑银 | Weldless steel tube hole shrinkage |
| US20090158587A1 (en) * | 2007-12-19 | 2009-06-25 | Caterpillar Inc. | Heat-based redimensioning for remanufacture of ferrous components |
| CN103433686A (en) * | 2013-08-14 | 2013-12-11 | 山西乡宁焦煤集团台头前湾煤业有限公司 | Cylinder barrel repairing process |
-
2014
- 2014-04-02 CN CN201410128674.XA patent/CN103894778B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058363A (en) * | 1990-07-24 | 1992-02-05 | 任鸿庆 | Cooling thrinkage regeneration technology for waste cylinder sleeve of suction pump in oil field |
| CN1057420A (en) * | 1991-07-27 | 1992-01-01 | 新泰市机床附件厂 | Process for restoring oil cylinder by diameter-reducing method |
| CN1203953A (en) * | 1998-05-02 | 1999-01-06 | 孙虎山 | Heat treatment method of international combustion engine cylinder and its equipment |
| CN101403031A (en) * | 2007-10-07 | 2009-04-08 | 王笑银 | Weldless steel tube hole shrinkage |
| US20090158587A1 (en) * | 2007-12-19 | 2009-06-25 | Caterpillar Inc. | Heat-based redimensioning for remanufacture of ferrous components |
| CN103433686A (en) * | 2013-08-14 | 2013-12-11 | 山西乡宁焦煤集团台头前湾煤业有限公司 | Cylinder barrel repairing process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526252A (en) * | 2015-01-22 | 2015-04-22 | 沈丘县金升电子科技有限公司 | Method for recovering inside diameter dimension of metal pipe through inner circle inductor and metal pipe |
| CN107052702A (en) * | 2016-01-15 | 2017-08-18 | 卡特彼勒公司 | Method and apparatus for repairing cylinder buss |
| CN114905223A (en) * | 2022-04-21 | 2022-08-16 | 山西庞泉重型机械制造有限公司 | Cylinder retracting device capable of circulating in and out and repairing process of cylinder barrel of oil cylinder |
| CN114905223B (en) * | 2022-04-21 | 2023-08-15 | 山西庞泉重型机械制造有限公司 | Cylinder shrinkage device capable of realizing in-out circulation and cylinder barrel repairing process of cylinder |
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| Publication number | Publication date |
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| CN103894778B (en) | 2016-07-06 |
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