CN103894778B - Mining oil cylinder undergauge reproduces manufacturing process - Google Patents
Mining oil cylinder undergauge reproduces manufacturing process Download PDFInfo
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- CN103894778B CN103894778B CN201410128674.XA CN201410128674A CN103894778B CN 103894778 B CN103894778 B CN 103894778B CN 201410128674 A CN201410128674 A CN 201410128674A CN 103894778 B CN103894778 B CN 103894778B
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- oil cylinder
- cylinder
- undergauge
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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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of mining oil cylinder undergauge reproduces manufacturing process, according to " metal heat-expansion shrinkage effect ", with intermediate frequency induction heating device oil cylinder inner wall is carried out quickly heating, external cylinders water spray cools down rapidly, it is achieved oil cylinder undergauge result.The oil cylinder shaped with this technological reforger, the shape that need not change original cylinder body, inboard wall of cylinder block does not need additionally to dose other material yet, saves steel and fund, and the cylinder block after reproducing complies fully with instructions for use.The method can be additionally used in other machining factory, for repairing and reproduce the cylinder body part scrapped because processing accidentally, save fund for enterprise, increase the benefit.
Description
Art
The present invention relates to mining oil cylinder undergauge and reproduce manufacturing process, belong to and reproduce forming technique field.
Background technology
Along with combining adopt at coal industry universal, combine the maintenance of oil recovery cylinder, maintenance amount very huge.Keep in repair at oil cylinder, in the process of maintenance, pull inside oil cylinder, corrosion, abrasion is overproof, the phenomenons such as cylinder that rise are very general.It is engaged in mining listed corporations and maintenance company and can solve this problem in the urgent need to a kind of new technique.At present both at home and abroad to the solution of this problem, mainly there is a following several ways: (1) is scrapped, more renewed part；(2) melting and coating technique and interior coating stainless steel set technology etc. are adopted；(3) expanding cylinder diameter, use profiled seal instead, this method prepares to the spare part of manufacturing enterprise, the promptness keeped in repair, safety all cause 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 high cost in various degree, production efficiency is low, complex process, uses the reasons such as instability, and spread difficulty is very big.
Summary of the invention
For reaching above-mentioned purpose, the present invention proposes a kind of mining oil cylinder undergauge and reproduces manufacturing process, is called for short undergauge reconstruction method.Undergauge reconstruction method is used 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, the former employing Tempering and Quenching that dispatches from the factory, mainly repair inner wall of cylinder, external diameter due to mining oil cylinder and generally do not need processing, so, the present invention utilizes " metal heat-expansion shrinkage effect ", is made inside wall of cylinder surface metal undergo phase transition by " interior heating, outer cooling " mode and then reached to reduce cylinder diameter purpose." interior heating " is oil cylinder inner wall quickly to be heated with intermediate frequency induction heating device, makes its surface temperature more than extremely short transient heating to phase transition temperature；" outward cooling " is heating while, outer surface of cylinder block is carried out spraying cooling with cooling water, makes cylinder surface rapid cooling thus the outside conduction velocity of cylinder intimate heat that slows down, it is to avoid cylinder body dimensional deformation；" undergauge " refers to produced desired treatment results after metal phase change.Casing wall material internal crystalline structure undergoes phase transition, due to the phase transformation of metal structure be changed to the martensitic structure that specific volume is big by the tissue that specific volume is little, the volume fractiion swollen by the constraint in casing wall space, expand laterally limited can only to contract, make casing wall internal diameter reduce (also known as undergauge).Casing wall after phase transformation undergauge, its internal original scuffing, corrosion, abrasion is overproof, the phenomenons such as cylinder that rise all control in rational size, and cylinder body original heat treatment performance index itself is also without big change.The follow-up finishing processing of casing wall only just can need to complete on honing machine.If adjusting the parameters such as associated heat frequency, translational speed, the type of cooling, just can obtain the result of casing wall undergauge 1-3 millimeter, being sufficient for the needs that the mining oil cylinder repair and reconstruction of all size shapes.
With this mining oil cylinder reproduce that manufacturing process repairs casing wall, technique is simple, equipment needed thereby cost is low, repairing efficiency is short, restoring oil cylinder remarkable benefit in batch, be conducive to promoting the use of on a large scale.Through consulting relevant information and patent retrieval, there are no the report of correlation technique content.
This mining oil cylinder undergauge of the present invention reproduces manufacturing process, key technical point is that " interior heating, outer cooling, undergauge are by phase transformation ".Described " interior heating " is exactly casing wall is quickly heated with medium frequency induction heater, makes its surface temperature moment reach more than phase transition temperature, and under this temperature conditions, metal inside crystalline structure could produce phase transformation this is to realize the theoretical foundation that oil cylinder undergauge reproduces；Described " outward cooling " refers to while inboard wall of cylinder block is heated, constantly carry out spraying cooling by continuous cooling water outside cylinder body, the heat conduction velocity of cylinder body because only that chilling is lowered the temperature, could be controlled, ensure that external skin temperatures will not rise too high, it is ensured that the outer cold effect of cylinder body interior-heat this be realize the important process measure that oil cylinder undergauge reproduces；" undergauge " in described " undergauge lean on phase transformation " be produced desired treatment results after referring to metal phase change.Due to casing wall surface temperature more than phase transition temperature, its crystal inside tissue occur crystal transition, phase transformation due to metal structure to be changed to the martensitic structure that specific volume is big by the tissue that specific volume is little, the volume fractiion swollen is by the constraint in casing wall space, expand laterally limited can only to contract, make casing wall internal diameter reduce (also known as undergauge), it is simply that " final result of metal phase change makes cylinder diameter reduce ".Along with sensing heating head slowly moves forward, in casing wall, remaining heat produces self tempering phenomenon, thus obtaining the better low-carbon martensite of performance.After so processing, the hardness of the pearlite that hardness ratio is original is higher, makes oil cylinder inner wall more wear-resisting, longer service life.Oil cylinder reproduces after manufacturing process process through undergauge, and performance and life-span have surmounted new oil cylinder.Carefully adjust the relevant parameters such as the heating-up temperature of casing wall, heat time heating time, rate of cooling, cooling water inflow, just can all obtain intended undergauge effect.
The method has the following characteristics that (1) does not dose any material, it is ensured that the uniformity of oil cylinder material, and maintenance cost is very low, and economic benefit and social benefit are notable；(2) technique is simple, be easy to spread；(3) reliable in quality, controls reliably and the means such as monitoring owing to have employed, and oil cylinder physical property such as material, hardness, intensity, crystalline phase tissue in undergauge process all controls in the scope of national regulation, and this fundamentally ensure that the quality reproducing oil cylinder；(4) sensing heating head does not contact, leans on therebetween the electromagnetic eddy of induction coil generation to heat casing wall with casing wall surface.Surface temperature Submillineter Wave Technology temperature measurer during heating detects in real time；(5) having recovered life size owing to being repaiied oil cylinder, this prepares to accessory, maintenance next time all creates advantage.
Detailed description of the invention
Implementing the method, equipment does not have particular/special requirement, existing idle plant equipment (such as lathe or lathe bed) is transformed a little.1, will with chuck, for clamping cylinder block and it can be driven at the uniform velocity to rotate；2, lathe bed to have on V-type supporting seat, a seat with two rollers for supporting cylinder body front portion, it is prevented that its front end is sagging；3, arranging a sliding platform on lathe bed, driven by reducing gear, can be slowly displaced outwardly, sensing switch board and sensing heating head are fixed on above sliding platform；4, there is cool water shower head outside cylinder body, must be able to during cylinder body heating ensure continuously to the outside water spray of cylinder body；5, by Submillineter Wave Technology temperature measurer detection temperature；6, put it to again after oil cylinder undergauge and oil cylinder honing machine carries out polish, just can complete oil cylinder and reproduce shaping work.
This mining oil cylinder undergauge reproduces manufacturing process, owing to the operation principle of institute's foundation is reliable, the technological means such as intermediate frequency induction heating device, infrared measurement of temperature used be the mature technology on market, it is known that, the two is combined, constitutes hydraulic cylinder undergauge and reproduce manufacturing process, be a technological innovation of the present invention.Reproducing the oil cylinder of shaping by the method, need not change the shape of original cylinder body, inboard wall of cylinder block does not need additionally to dose other material yet, saves great deal of steel and fund, and the cylinder block after reproducing complies fully with instructions for use.
For certain maintenance factory, within 1 year, repairing eight set supports, a set of support has about 150 framves, has 19 hydraulic cylinders to calculate by often overlapping, probably have the hydraulic cylinder of 1/3rd to need regeneration on support.The method adopting the present invention, fix reproduce an oil cylinder only need the 1/10 of its market price 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 manufacturing process, can be additionally used in other machining factory, for repairing and reproduce because processing the cylinder body part scrapped accidentally, save fund for enterprise, increase the benefit.
Claims (1)
1. a mining oil cylinder undergauge reproduces manufacturing process, it is characterized in that: intermediate frequency induction heating device is placed in oil cylinder inner wall, it is quickly heated, make its surface temperature more than transient heating to phase transition temperature, while inboard wall of cylinder block heats, outer surface of cylinder block is carried out spraying cooling with cooling water, makes cylinder surface rapid cooling, it is to avoid cylinder body dimensional deformation；Cylinder body after heating due to expand laterally limited can only to contract, casing wall undergauge scope 1-3 millimeter.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103894778A CN103894778A (en) | 2014-07-02 |
| CN103894778B true CN103894778B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN103894778B (en) |
Families Citing this family (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 |
| US10060529B2 (en) * | 2016-01-15 | 2018-08-28 | Caterpillar Inc. | Method and apparatus for repairing cylinder liners |
| 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 |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090158587A1 (en) * | 2007-12-19 | 2009-06-25 | Caterpillar Inc. | Heat-based redimensioning for remanufacture of ferrous components |
-
2014
- 2014-04-02 CN CN201410128674.XA patent/CN103894778B/en active Active
Patent Citations (5)
| 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 |
| 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 |
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| CN103894778A (en) | 2014-07-02 |
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