CN1883825A - Vibration derusting process for inner surface of pipeline and device therefor - Google Patents
Vibration derusting process for inner surface of pipeline and device therefor Download PDFInfo
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- CN1883825A CN1883825A CNA200610047158XA CN200610047158A CN1883825A CN 1883825 A CN1883825 A CN 1883825A CN A200610047158X A CNA200610047158X A CN A200610047158XA CN 200610047158 A CN200610047158 A CN 200610047158A CN 1883825 A CN1883825 A CN 1883825A
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Abstract
The invention relates to a vibration derusting process for piping internal surface and a device therefore, comprising a chassis, a DC speed-changeable motor, a transverse work table, and a longitudinal work table, characterized in that the device also comprises a transverse vibration cylinder, a assisted motor, a vibration spring, a eccentric cam, and a dedicated clamp. The process comprises filling the high rigid abrasive grain into the pipe to be processed, and fixing the pipe on above work table by dedicated clamp; switching on the power supply, adjusting the rotation speed of DC speed-changeable motor, the pressure of vibration cylinder, and the length of vibration spring to control the vibration frequency and the vibration amplitude to be up to the set value; starting the switch, realizing the vibration derusting, wherein the pipe rotates round its shaft and does complex vibration along with the work table, the abrasive grain in pipe generates inertial impact force and impacts the piping internal surface. The vibration derusting process is provided with good social benefit and economic benefit, and the device can be suitable for all kinds of pipes, especially for small-diameter long piping.
Description
Technical field
The present invention relates to a kind of ad hoc approach and equipment of cleanser conduit inner surface, relate in particular to a kind of Vibration derusting process for inner surface of pipeline and device therefor.
Background technology
The main applied metal pipeline of industrial and civilian liquid and gas is carried, because the corrosivity of liquid and gas produces corrosion to inner-walls of duct, easily causes leakage pollution harm, the liquid of carrying is produced pollute simultaneously.Therefore the conveyance conduit inner surface must carry out preservative treatment.The pretreatment procedure quality of antiseptic effect and inner surface of pipeline is closely related.Rust staining on the pretreatment procedure requirement removing inner surface of pipeline, greasy dirt, oxide layer etc.At present, industrial the anticorrosion pre-treating technology of inner surface of pipeline is mainly contained: 1. pickling processes (on-line cleaning or disassemble cleaning): utilize acid and oxide layer, iron rust to produce chemical principle and handle, wash with clear water, the cost height, rust cleaning quality instability, production environment is abominable, big to operator ' s health harm, can not form after the rust cleaning simultaneously and apply the required surface roughness of corrosion protective covering, thereby influenced coating quality, the waste liquid environmental pollution that produces is serious, pickle liquor causes industrial equipment and environmental pollution, waste water resource; 2. machinery cleans: utilize the metal major axis to drive the cutting force that emery wheel produces and handle oxide layer and iron rust, mainly be applicable to the large diameter pipeline inner surface, the slender rectangular tube treatment effect is subjected to the stiffness effect of major axis, effect is undesirable; 3. blasting treatment: utilize oxide layer and iron rust on the high rigidity abrasive grain impulse piping inner surface that gases at high pressure carry, produce dust pollution, undesirable to the slender rectangular tube treatment effect.
Summary of the invention
In view of existing in prior technology the problems referred to above and deficiency, the present invention aims to provide a kind of utilization vibration processing technology principle and realizes pipeline, the oxide layer of especially small-bore long pipeline inner surface and iron rust are removed the device of processing, when effectively avoiding environmental pollution and water waste, its rust cleaning effect has reached the specification requirement of inner surface of pipeline being carried out anticorrosion pre-treatment.
Technical solution of the present invention is achieved in that
A kind of inner surface of pipeline vibration derusting device comprises frame, dc speed-changing motor, stand-by motor, power transmission shaft, horizontal work level, vertical workbench, it is characterized in that also comprising oscillation crosswise cylinder, vibrating spring, eccentric wheel and special fixture; Described eccentric wheel is positioned under vertical workbench and with vertical workbench line and contacts, vertically the workbench both sides respectively connect one section vibrating spring, the opposite side of spring is connected on the frame respectively, described dc speed-changing motor passes motion to eccentric wheel by power transmission shaft, along with eccentric rotation, vertically workbench produces vertical vibration; During cylinder operation, drive horizontal work level and produce the horizontal direction vibration; The assisted deceleration motor rotatablely moves by gear transmission and is fixed in workpiece in the anchor clamps to special fixture with trip bolt, and workpiece and anchor clamps are done gyration around its common axis line jointly; Special fixture supports the location by the floating bearing that is installed on the horizontal work level.In working order down, be contained in pipe fitting in the special fixture when making the complex vibration of vertical direction and horizontal direction, rotate around himself axis along with horizontal, vertical workbench.
Described cylinder is the self-excited vibration cylinder, its adjustable in pressure.
Like this can be respectively the pressure of rotating speed by regulating dc speed-regulating motor and self-excited vibration cylinder realize the adjusting of the frequency of vertical direction and horizontal direction vibration.
The length of described vibrating spring is adjustable, can change the amplitude of pipe fitting and inner abrasive particle thereof vibration thus by the length that changes spring.
A kind ofly adopt above-mentioned vibration derusting device to carry out the process of inner surface of pipeline vibration derusting, it is characterized in that it comprises the steps:
A, in the pipeline of pipe fitting to be processed, add the high rigidity abrasive particle;
B, the suitable special fixture of selection size are installed on above-mentioned pipe fitting on the workbench of described inner surface of pipeline vibration derusting device;
C, connection power supply are regulated dc speed-changing rotating speed of motor, the pressure of oscillation crosswise cylinder and the length of vibrating spring and are obtained setting value respectively;
D, starting switch, dc speed-changing motor, stand-by motor and oscillation crosswise cylinder are worked simultaneously, pipe fitting is when himself axis is done gyration, along with workbench is done compound vibration, the abrasive particle of pipe fitting inside produces inertial impact force impulse piping inner surface, removes the rust staining and the oxide layer of inner surface of pipeline;
E, take off above-mentioned pipe fitting, remove the abrasive particle in the pipeline, inner surface of pipeline is carried out macroscopic view detects and the detection of microcosmic metallographic;
F, repeat the operation of above-mentioned a, b, c, d, e, promptly finished vibration derusting process this time after qualified until detecting.
The amplitude of described complex vibration is 1-8mm, and frequency is 20-48Hz.The size of amplitude realizes that by the length of regulating vibrating spring the height of frequency is realized jointly by the pressure of regulating dc speed-changing rotating speed of motor and oscillation crosswise cylinder.
Compared with prior art, beneficial effect of the present invention and advantage are conspicuous: adopt this device that inner surface of pipeline is handled, its rust cleaning effect has reached the anticorrosion pretreated technological requirement of inner surface of pipeline; Simultaneously it has avoided the pollution to environment of the pickling preliminary treatment is produced in the steel tube surface processing procedure acid-base waste fluid, has reduced the dust pollution that blasting treatment produced, and has saved water resource, thereby had good social benefit.This vibration derusting device can be widely used in the processing of rust removing of various pipe fitting inner surfaces, is particularly useful for the processing of rust removing of small-bore long pipeline inner surface.
Description of drawings
The present invention has 3 accompanying drawings, promptly
Fig. 1 is a structural representation sketch of the present invention;
Fig. 2 is that the steel pipe internal-surface rust staining amplifies 50 times metallograph before handling;
Fig. 3 is that the steel pipe internal-surface after the vibration derusting test amplifies 50 times metallograph;
Among the figure, 1, frame 2, dc speed-changing motor 3, power transmission shaft 4, oscillation crosswise cylinder 5, oscillation crosswise workbench 6, stand-by motor 7, special fixture 8, extensional vibration workbench 9, vibrating spring 10, eccentric wheel 11, pipe fitting to be processed (inside is filled with abrasive particle).
The specific embodiment
Test by computational analysis and on vibration derusting device of the present invention, parameters such as analysis-by-synthesis mass particle, amplitude, frequency, time of vibration are to the influence of rust cleaning effect, concrete enforcement is as follows: two long 3m of outsourcing, internal diameter are the elongated steel pipe of 18mm.With lathe it is cut, obtain 60 of long steel pipes for 100mm, the steel pipe after these cuttings is placed allow its inner wall corrosion under the wet environment, thereby obtain rust staining.
Attention: 1., put into wet environment then, avoid the steel pipe depths not to be corroded with steel pipe cutting earlier; 2. all steel pipes are after cutting and corrosion, and the test specimen state that obtains is the same substantially, reduces the result of the test error.
Choose the particle of different-diameter, test by regulating technological parameter (shake table frequency, amplitude, process time, particle loadings etc.), the record test data is as shown in the table.After steel pipe after test handled is done macroscopical comparative analysis, make section again, examine under a microscope, the effect after relatively steel pipe is handled is analyzed the influence rule of various parameters to technological effect.
| Particle diameter | D＜0.9mm | D＜1.1mm | D＜1.5 | ||||
| Loadings | |||||||
| 1/3 | 1/2 | 1/3 | 1/2 | 1/3 | 1/2 | ||
| Particulate material and hardness | Quartz sand (about hardness 5) | Iron sand (about HB300) | Quartz sand (about hardness 5) | Iron sand (about HB300) | Quartz sand (about hardness 5) | Iron sand (about HB300) | |
| Frequency (Hz) | 20 | 40 | 20 | 40 | 20 | 40 | |
| Amplitude (mm) | 2 | 3 | 2 | 3 | 2 | 3 | |
| Time (min) | 10 | √ | √ | √ | √ | √ | √ |
| 20 | √ | √ | √ | √ | √ | √ | |
| 30 | √ | √ | √ | √ | √ | √ | |
Iron sand with particle diameter D=0.9～1.1mm, HB300 is an abrasive material, and loadings is 1/2, is 3mm at amplitude, frequency is under the process conditions of 38Hz, above-mentioned pipe fitting is installed on shaking table, vibrates 30 minutes, do the macroscopic view contrast after taking off respectively and detect with the microcosmic metallographic.The macroscopic view contrast shows that the rust staining of the pipe fitting inner surface after above-mentioned processing disappears, and demonstrates gloss brightness; The metallograph that microcosmic metallographic after the processing detects is compared with handling preceding metallograph Fig. 2 as shown in Figure 3, illustrates that the rust cleaning effect of this technology is obvious.
By test data is analyzed as can be known, each parameter is as follows to the influence of technological effect:
Hardness of the abrasive grain: iron rust is organized more open, removes but the oxide layer of metal surface is difficult, and particle hardness is high more, can thoroughly remove rusty scale more.
Particulate material: the particle of different materials, under same size, quality is big, and the impulsive force that inner-walls of duct is produced is big, and it is effective eliminate rust, but to the particle of identical material, quality is big, and then volume is big, and the contact area increase of particle and rust staining influences impact pressure on the contrary.
Grit size: particle diameter d=1.1～1.5mm, there is not the rust cleaning effect substantially; D=0.9～1.1mm, it is more obvious to eliminate rust, but also has certain thickness rust staining; D＜0.9mm can further remove rust staining.If d is too small, mass particle is very low, and kinetic energy is little, does not have the rust cleaning effect.
Amplitude: following relation: α=0.004Af is arranged between acceleration, amplitude, the frequency
2Amplitude is big more, and acceleration is big more, and particle kinetic energy is big, and the rust cleaning effect is good more.
Frequency: frequency increases, and it is big that acceleration becomes, but influence amplitude.Frequency is too low, and working (machining) efficiency is low.
Time: in general, process time is long more, and the rust cleaning effect is obvious more.
Claims (4)
1, a kind of inner surface of pipeline vibration derusting device, comprise frame (1), dc speed-changing motor (2), power transmission shaft (3), horizontal work level (5), vertical workbench (8), it is characterized in that also comprising oscillation crosswise cylinder (4), stand-by motor (6), vibrating spring (9), eccentric wheel (10) and special fixture (7); Described eccentric wheel (10) is positioned under vertical workbench (8) and with vertical workbench (8) line and contacts, vertically the workbench both sides respectively connect one section vibrating spring (9), the opposite side of spring is connected on respectively on the frame (1), described dc speed-changing motor (2) passes motion to eccentric wheel (10) by power transmission shaft (3), along with the rotation of eccentric wheel (10), vertically workbench (8) produces vertical vibration; During cylinder (4) work, drive horizontal work level (5) and produce the horizontal direction vibration; Assisted deceleration motor (6) rotatablely moves by gear transmission and is fixed in workpiece (11) on the anchor clamps (7) to special fixture (7) with trip bolt, and workpiece (11) and anchor clamps (7) are done gyration around its common axis line jointly; Special fixture (7) supports the location by the floating bearing that is installed on the horizontal work level (5).
2, inner surface of pipeline vibration derusting device according to claim 1 is characterized in that described oscillation crosswise cylinder (5) is the self-excited vibration cylinder.
3, a kind of process that adopts the described device of claim 1 to carry out the inner surface of pipeline vibration derusting is characterized in that it comprises the steps:
A, in the pipeline of pipe fitting to be processed, add the high rigidity abrasive particle;
B, the suitable special fixture of selection size are installed on above-mentioned pipe fitting on the workbench of described inner surface of pipeline vibration derusting device;
C, connection power supply are regulated dc speed-changing rotating speed of motor, the pressure of oscillation crosswise cylinder and the length of vibrating spring and are obtained setting value respectively;
D, starting switch, dc speed-changing motor, stand-by motor and oscillation crosswise cylinder are worked simultaneously, pipe fitting is when himself axis is done gyration, along with workbench is done compound vibration, the abrasive particle of pipe fitting inside produces inertial impact force impulse piping inner surface, removes the rust staining and the oxide layer of inner surface of pipeline;
E, take off above-mentioned pipe fitting, remove the abrasive particle in the pipeline, inner surface of pipeline is carried out macroscopic view detects and the detection of microcosmic metallographic;
F, repeat the operation of above-mentioned a, b, c, d, e, promptly finished vibration derusting process this time after qualified until detecting.
4, the process of inner surface of pipeline vibration derusting according to claim 3, the amplitude that it is characterized in that described complex vibration is 1-8mm, frequency is 20-48Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610047158XA CN100531940C (en) | 2006-07-04 | 2006-07-04 | Vibration derusting process for inner surface of pipeline and device therefor |
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|---|---|---|---|
| CNB200610047158XA CN100531940C (en) | 2006-07-04 | 2006-07-04 | Vibration derusting process for inner surface of pipeline and device therefor |
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| Publication Number | Publication Date |
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| CN1883825A true CN1883825A (en) | 2006-12-27 |
| CN100531940C CN100531940C (en) | 2009-08-26 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267099A (en) * | 2011-08-06 | 2011-12-07 | 张铮 | Method for removing oxidation layer on inner wall of steel pipe |
| CN107234111A (en) * | 2016-03-28 | 2017-10-10 | 石亚民 | The actuating unit and method of a kind of pipeline cleaning |
| CN107662149A (en) * | 2017-03-26 | 2018-02-06 | 许昌义 | Excitation type three-dimensional force inner chamber rust remover |
| CN108621017A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Electromagnetic type three-dimensional force inner cavity rust remover |
| CN108621018A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Pneumatic type three-dimensional force inner cavity rust remover |
| CN108620393A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Ultrasonic wave three-dimensional force inner cavity rust remover |
| CN109454535A (en) * | 2018-09-29 | 2019-03-12 | 浙江步丹工贸有限公司 | A kind of the derusting plastic soaking device and its processing technology of small members |
| CN110561261A (en) * | 2019-09-09 | 2019-12-13 | 西安建筑科技大学 | Pneumatic mechanical rust removal device and process for inner wall of special-shaped small-caliber pipe |
| CN110561260A (en) * | 2019-09-09 | 2019-12-13 | 西安建筑科技大学 | hydraulic mechanical derusting device and process for inner wall of special-shaped small-caliber pipe |
| CN113182155A (en) * | 2021-04-29 | 2021-07-30 | 江苏电子信息职业学院 | Treatment process for improving adhesive force of coating on steel surface |
-
2006
- 2006-07-04 CN CNB200610047158XA patent/CN100531940C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267099A (en) * | 2011-08-06 | 2011-12-07 | 张铮 | Method for removing oxidation layer on inner wall of steel pipe |
| CN107234111A (en) * | 2016-03-28 | 2017-10-10 | 石亚民 | The actuating unit and method of a kind of pipeline cleaning |
| CN107662149B (en) * | 2017-03-26 | 2020-11-27 | 五河县智凯环保科技有限公司 | Excitation type three-dimensional force inner cavity deruster |
| CN108621017A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Electromagnetic type three-dimensional force inner cavity rust remover |
| CN108621018A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Pneumatic type three-dimensional force inner cavity rust remover |
| CN108620393A (en) * | 2017-03-26 | 2018-10-09 | 许昌义 | Ultrasonic wave three-dimensional force inner cavity rust remover |
| CN107662149A (en) * | 2017-03-26 | 2018-02-06 | 许昌义 | Excitation type three-dimensional force inner chamber rust remover |
| CN109454535A (en) * | 2018-09-29 | 2019-03-12 | 浙江步丹工贸有限公司 | A kind of the derusting plastic soaking device and its processing technology of small members |
| CN109454535B (en) * | 2018-09-29 | 2024-01-30 | 浙江步丹工贸有限公司 | Rust removal plastic dipping equipment for small-sized components and processing technology thereof |
| CN110561261A (en) * | 2019-09-09 | 2019-12-13 | 西安建筑科技大学 | Pneumatic mechanical rust removal device and process for inner wall of special-shaped small-caliber pipe |
| CN110561260A (en) * | 2019-09-09 | 2019-12-13 | 西安建筑科技大学 | hydraulic mechanical derusting device and process for inner wall of special-shaped small-caliber pipe |
| CN110561261B (en) * | 2019-09-09 | 2021-02-26 | 西安建筑科技大学 | Pneumatic mechanical rust removal device and process for inner wall of special-shaped small-caliber pipe |
| CN113182155A (en) * | 2021-04-29 | 2021-07-30 | 江苏电子信息职业学院 | Treatment process for improving adhesive force of coating on steel surface |
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| CN100531940C (en) | 2009-08-26 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dalian Kehua Heating Pipe Co.,Ltd Assignor: Dalian Jiaotong University Contract fulfillment period: 2009.10.30 to 2014.10.30 contract change Contract record no.: 2009210000260 Denomination of invention: Vibration derusting process for inner surface of pipeline and device therefor Granted publication date: 20090826 License type: Exclusive license Record date: 2009.11.3 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.10.30 TO 2014.10.30; CHANGE OF CONTRACT Name of requester: DALIAN KEHUA HEATING PIPE CO.,LTD. Effective date: 20091103 |
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