CN105112645A - Spiral-pressure type ultrasonic surface nanocrystallization device - Google Patents
Spiral-pressure type ultrasonic surface nanocrystallization device Download PDFInfo
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- CN105112645A CN105112645A CN201510580028.1A CN201510580028A CN105112645A CN 105112645 A CN105112645 A CN 105112645A CN 201510580028 A CN201510580028 A CN 201510580028A CN 105112645 A CN105112645 A CN 105112645A
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Abstract
The invention discloses a spiral-pressure type ultrasonic surface nanocrystallization device. The ultrasonic surface nanocrystallization device comprises a steel cylinder in which a piston is arranged, wherein a threaded rod with a handle is combined with a threaded hole in an upper cover of the steel cylinder, and penetrates into the steel cylinder; a spring is arranged between the threaded rod and the piston; the lower end of the piston is in contact with a piezoelectric ceramic stack; an ultrasonic pressure head is arranged at the lower end of the piezoelectric ceramic stack; the ultrasonic pressure head comprises a round base; a plurality of round rods arranged in an array are mounted on the round base; a carbonized tungsten alloy round ball is fixed at the bottom of each round rod by a locking cap; the carbonized tungsten alloy round balls strike and roll the surface of a metal workpiece. The ultrasonic surface nanocrystallization device disclosed by the invention is reasonable in structure, and through the adoption of the ultrasonic surface nanocrystallization device, surface nanocrystallization of metal materials is convenient to realize.
Description
Technical field
The present invention relates to a kind of ultrasonic surface nanocrystallization device.
Background technology
Engineering metal material is of many uses in various engineering, consumption is huge.Time under arms, destruction and the inefficacy of material generally start from surface, and as wearing and tearing, repeated stress failure etc., the surface property thus improving material can extend the service life of material.Experimental study shows, as long as prepare certain thickness nanostructured surface laye at material surface, namely realizes making Nano surface, just can be improved the overall performance of material by the optimization of surface property.In present stage, material surface nanometer has top coat or the method such as deposition, surface self-nanocrystallization.Top coat or deposition method utilize other nano-powder technology of preparing to obtain the particle with nanoscale, then by the surface of this Particle consolidation at material, form one and study a point identical or different nanostructured surface laye with matrixed.The principal character of this method is that the nanocrystalline size in top layer is comparatively even, and grain-size is controlled, but there is obvious interface between top layer and matrix, and the physical dimension of material increases before comparatively processing to some extent.Surface self-nanocrystallization method adopts special treatment method to make metallic substance open grain structure be refined to nanometer scale gradually.The principal character of this treatment process is that grain-size through-thickness increases gradually, does not have obvious interface between nanostructured surface laye and matrix, and before and after process, the physical dimension of material is substantially constant.A kind of important method realizing making Nano surface is surperficial mechanical treatment process, its principal feature makes plus load repeatedly act on the surface of material with different directions, refine to nanometer scale to make the crystal grain of material surface gradually by the intense plastic strain of different directions.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, conveniently realize the helical pressure formula ultrasonic surface nanocrystallization device of making Nano surface of metal material.
Technical solution of the present invention is:
A kind of helical pressure formula ultrasonic surface nanocrystallization device, it is characterized in that: the steel cylinder comprising interior band piston, a screw rod with hand handle is combined with the threaded hole of steel cylinder upper cover and penetrates in steel cylinder, arranges spring between screw rod and piston; Piston contacts with piezoelectric ceramic stack, and piezoelectric ceramic stack lower end arranges ultrasonic pressure head; Described ultrasonic pressure head comprises round base, round base fills the round bar of many arrayed, and a carbon tungsten alloy ball fixed by the bottom locking cap of each round bar, and carbon tungsten alloy ball carries out clashing into and rolling at surface of workpiece.
Between spring and screw rod, tensimeter is set.Piezoelectric ceramic stack is connected with power amplifier, and power amplifier is connected with signal generator.
Advantage of the present invention: adopt screw rod steel cylinder piston cylinder operator, structure is simple, it is simple and easy, with low cost to make; Moved by screw rod and control the normal pressure power of ultrasonic pressure head compressing at material surface; Realize Action of Superhigh Frequency Vibration by piezoelectric ceramic stack, drive ultrasonic pressure head to realize ultrasonic shock, Action of Superhigh Frequency Vibration can regulate by signal generator is convenient, and ultrasonic shock implementation is simple, reliable; Device mounting means is simple, practical, and by the position walking knife system fixed oil cylinder of lathe, workpiece can be realized rotating by lathe; Surface Nanocrystalline is carried out to hardware, consumes the energy (electricity consumption) less, do not produce any hangover, to environment without any pollution.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of ultrasonic pressure head.
Embodiment
A kind of helical pressure formula ultrasonic surface nanocrystallization device, the steel cylinder 6, comprising interior band piston 5 to be combined with the threaded hole of steel cylinder upper cover with the screw rod 9 of hand handle and to penetrate in steel cylinder, arranges spring 7 between screw rod and piston; Piston contacts with piezoelectric ceramic stack 2, and piezoelectric ceramic stack lower end arranges ultrasonic pressure head 1; Described ultrasonic pressure head comprises round base 11, round base fills the round bar 12 of many arrayed, and a carbon tungsten alloy ball 14 fixed by the bottom locking cap 13 of each round bar, and carbon tungsten alloy ball carries out clashing into and rolling on metal works 10 surface.
Tensimeter 8 is set between spring and screw rod.Piezoelectric ceramic stack is connected with power amplifier 3, and power amplifier is connected with signal generator 4.
Working process (realizing the method for making Nano surface of metal material):
When piston position is fixed, mobile screw, compression spring, can the pressure that is subject to of regulating piston, is shown by tensimeter.Piston is connected with a piezoelectric ceramic stack, and piezoelectric ceramic stack and specially designed pressure head connect.Based on piezoelectric effect, under impressed voltage effect, piezoelectric ceramics piles up and longitudinally produces distortion (stretching).Under alternating voltage, piezoelectric ceramic stack produces longitudinal vibration.The commodity piezoelectric ceramic stack of market sale, response frequency can reach 20kHz, and nominal displacement (amplitude) can reach 60 μm, maximum thrust 20000N.Piezoelectric ceramic stack and power amplifier, signal generator are connected by circuit.When carrying out the process of material surface nanometer to workpiece, what steel cylinder can be placed on lathe walks on knife system, moves away knife system, makes steel cylinder move to an appropriate location, and at this moment ultrasound probe and workpiece surface are close to contacting.Fixedly walk knife system (steel cylinder) position, then swing handle, screw rod is moved, according to tensimeter index, make the pressure of piston action on ultrasonic pressure head be in set(ting)value, at this moment the constance force set with this is pressed in workpiece surface by ultrasonic pressure head.The ultra-high frequency alternating voltage signal (ultrasonic signal) that signal generator produces, after power amplifier amplifies, is applied on piezoelectric ceramic stack, makes it produce ultrasonic vibration, drives ultrasonic pressure head with ultrasonic frequency striking work surface.While ultrasonic shock, workpiece rotates, at this moment the wolfram varbide ball in ultrasonic pressure head also rolls workpiece surface except clashing into, make the crystal grain of workpiece material surface refine to nanometer scale gradually by the intense plastic strain of different directions, realize material surface nanometer.
Claims (3)
1. a helical pressure formula ultrasonic surface nanocrystallization device, is characterized in that: the steel cylinder comprising interior band piston, and a screw rod with hand handle is combined with the threaded hole of steel cylinder upper cover and penetrates in steel cylinder, arranges spring between screw rod and piston; Piston contacts with piezoelectric ceramic stack, and piezoelectric ceramic stack lower end arranges ultrasonic pressure head; Described ultrasonic pressure head comprises round base, round base fills the round bar of many arrayed, and a carbon tungsten alloy ball fixed by the bottom locking cap of each round bar, and carbon tungsten alloy ball carries out clashing into and rolling at surface of workpiece.
2. helical pressure formula ultrasonic surface nanocrystallization device according to claim 1, is characterized in that: between spring and screw rod, arrange tensimeter.
3. helical pressure formula ultrasonic surface nanocrystallization device according to claim 1 and 2, it is characterized in that: piezoelectric ceramic stack is connected with power amplifier, power amplifier is connected with signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580028.1A CN105112645A (en) | 2015-09-14 | 2015-09-14 | Spiral-pressure type ultrasonic surface nanocrystallization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510580028.1A CN105112645A (en) | 2015-09-14 | 2015-09-14 | Spiral-pressure type ultrasonic surface nanocrystallization device |
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| CN105112645A true CN105112645A (en) | 2015-12-02 |
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| CN201510580028.1A Pending CN105112645A (en) | 2015-09-14 | 2015-09-14 | Spiral-pressure type ultrasonic surface nanocrystallization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108203756A (en) * | 2016-12-16 | 2018-06-26 | 南京理工大学 | Piezoelectric Driving metal-surface nano processing unit (plant) |
| CN110396582A (en) * | 2019-08-14 | 2019-11-01 | 南通大学 | A kind of metal component hole wall surface nanocrystallization device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169078A (en) * | 2002-11-19 | 2004-06-17 | Nippon Steel Corp | Method for producing metallic product with nano-crystallized surface layer part |
| CN1911596A (en) * | 2006-08-15 | 2007-02-14 | 天津大学 | Processing method and equipment of metal material surface nanometer layer |
| CN101219512A (en) * | 2008-01-29 | 2008-07-16 | 天津大学 | Ultrasonic executing agency and processing method for plane ultrasonic surface rolling |
| CN103264356A (en) * | 2013-05-27 | 2013-08-28 | 天津天东恒科技发展有限公司 | Multi-needle type impacting head for ultrasonic impacting gun and design method of impacting head |
-
2015
- 2015-09-14 CN CN201510580028.1A patent/CN105112645A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169078A (en) * | 2002-11-19 | 2004-06-17 | Nippon Steel Corp | Method for producing metallic product with nano-crystallized surface layer part |
| CN1911596A (en) * | 2006-08-15 | 2007-02-14 | 天津大学 | Processing method and equipment of metal material surface nanometer layer |
| CN101219512A (en) * | 2008-01-29 | 2008-07-16 | 天津大学 | Ultrasonic executing agency and processing method for plane ultrasonic surface rolling |
| CN103264356A (en) * | 2013-05-27 | 2013-08-28 | 天津天东恒科技发展有限公司 | Multi-needle type impacting head for ultrasonic impacting gun and design method of impacting head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108203756A (en) * | 2016-12-16 | 2018-06-26 | 南京理工大学 | Piezoelectric Driving metal-surface nano processing unit (plant) |
| CN110396582A (en) * | 2019-08-14 | 2019-11-01 | 南通大学 | A kind of metal component hole wall surface nanocrystallization device |
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Application publication date: 20151202 |
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| RJ01 | Rejection of invention patent application after publication |