CN105855792A - Ultrasonic surface rolling and pressing device with controllable time-varying static pressure - Google Patents
Ultrasonic surface rolling and pressing device with controllable time-varying static pressure Download PDFInfo
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- CN105855792A CN105855792A CN201610422713.6A CN201610422713A CN105855792A CN 105855792 A CN105855792 A CN 105855792A CN 201610422713 A CN201610422713 A CN 201610422713A CN 105855792 A CN105855792 A CN 105855792A
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- pressure
- static pressure
- ultrasonic
- reducing valve
- surface rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
Abstract
The invention relates to an ultrasonic surface rolling and pressing device with controllable time-varying static pressure, and belongs to the field of metal surface modification. According to the ultrasonic surface rolling and pressing device, a pressure sensor is fixed on a rear cover plate of an inner sleeve; a central hole is in threaded linking with a piston rod; a filtered gas source is divided into two paths which are respectively input into two gas chambers partitioned by a piston inside the outer sleeve through a filtering pressure reducing valve and a proportional pressure reducing valve; pressure formed by the pressure difference of the two gas chambers is converted into an electric signal by the pressure sensor; a simulation electric signal is converted into a digital signal by an A/D converter and is input into a computer; the pressure is compared with preset static pressure by programs; subsequently a digital feedback signal is output and is converted into a simulation signal through a D/A converter; the proportional pressure reducing valve is driven to adjust the output pressure to drive the piston rod to move in the axial direction, and thus real-time regulation and control of the static pressure can be achieved. The ultrasonic surface rolling and pressing device has the advantages of high precision, stable operation, possibility of synchronous automatic control and the like.
Description
Technical field
The present invention relates to metal surface modification field, there is the ultrasonic surface rolling device of controlled time-varying static pressure.Can accurately control static pressure according to process requirements in the course of processing.
Background technology
In today that frame for movement premature failure and security incident take place frequently, it is ensured that component of machine safe operation of in-service period, extend the key subjects that service life is national economy.With fatigue damage in the mechanism causing mechanized equipment to lose efficacy, corrode and wear and tear relatively conventional.In most of the cases, these lost efficacy from the beginning of surface.Such as, surface is the significant points of fatigue crack initiation, corrodes and weares and teares also start from surface more.If preparing the nano-crystalline layers of one layer of strengthening on the surface of component of machine, it is possible to improved the comprehensive mechanical property of material by the optimization of surface texture performance.Therefore, research improves component of machine resisting fatigue, abrasion and the surface peening new method of decay resistance, it is ensured that its safe operation, extends effective service life, has important economic implications.
It is a kind of impact type pressure polishing processing method that ultrasonic surface rolling processes, and its essence is and obtains and have the high added value component of machine of the serviceabilities such as high resisting fatigue/corrosion-resistant/wear-resistant by introducing power ultrasonic frequency mechanical vibration on the basis of conventional surface rolling technology.
Ultrasonic surface rolling technology test show, static pressure plays a major role during inducing materials surface plastic deformation, i.e. the biggest surface layer grain of static pressure is the thinnest, work hardening layer is the deepest, the numerical value of residual compressive stress and scope the biggest.But, excessive static pressure can increase surface roughness, and the raising of the performances such as fatigue is crystal grain refinement, processing hardening, surface roughness and the result of residual stress comprehensive function.For bearing the component of machine of complex work load, such as blade, the cyclic loading stress ratio R difference that its zones of different is born is bigger, when stress ratio is relatively low, residual compressive stress effect on raising fatigue strength is more obvious, and when stress ratio is higher, surface roughness is the most obvious on the impact of fatigue strength, high surface roughness microcell easily germinates fatigue crack, counteracts the fatigue strength raising effect that compressive residual stress brings to a great extent.
Therefore, being badly in need of one can be in the course of processing, according to the ultrasonic surface rolling device of workpiece zones of different actual service state real-time monitoring static pressure.
Summary of the invention
It is an object of the invention to provide a kind of ultrasonic surface rolling device with controlled time-varying static pressure, solve the problems referred to above that prior art exists.Ultrasonic surface rolling process accurately controls and is automatically adjusted static pressure the most in real time, particular for the component of machine with complex surface, the mechanical surface of fatigue behaviour uniformity can obtained simultaneously, it is to avoid the resetting caused because of change static pressure in the course of processing is difficult, increase the problems such as mismachining tolerance.The present invention is introducing pressure regulating system on the basis of existing ultrasonic surface rolling tools system, thus realizes accurately measuring and automatically controlling static pressure.There is the advantage that degree of accuracy is high, operate steadily, can realize synchronised automatic control, and can couple with Control System of NC Machine easily.The present invention can accurately realize the time-varying control of static pressure, particularly when processing the component of machine with complex surface, it is possible to by obtaining the mechanical surface of resisting fatigue/corrosion-resistant/abrasion resistance properties uniformity in different Working position real-time regulating static power.
The above-mentioned purpose of the present invention is achieved through the following technical solutions:
There is the ultrasonic surface rolling device of controlled time-varying static pressure, including ultrasonic transducer 4, horn 2, milled head 1, pressure transducer 10, piston 13 and piston rod 16, A/D converter, filtering pressure reducing valve, proportional pressure-reducing valve etc., described pressure transducer 10 is fixed on inner sleeve back shroud 8 by trip bolt；One end of piston rod 16, with external screw thread, screws with the internal thread hole at pressure transducer 10 center, and the other end is connected with piston 13；Outer sleeve 6 is divided into two air chambers by piston 13, is connected with filtering pressure reducing valve and proportional pressure-reducing valve by QI KOU respectively, and described filtering pressure reducing valve, proportional pressure-reducing valve are connected with source of the gas by air filter；Horn 2 and piezoelectric ceramic transducer 4 are fixed together composition ultrasonic vibration system；Milled head 1 is fixed on ultrasonic vibration system front end by inner sleeve 5, and part spherosome embeds in the groove of horn 2 front end, and ultrasonic vibration system does supersonic frequency mechanical vibration in the axial direction, drives front end milled head 1 to do supersonic vibration；After fan 7 is placed in piezoelectric ceramic transducer 4, controlled time-varying static pressure by computer by controlling the air pressure in two air chambers, promote piston rod to move so that ultrasonic vibration system axially moves, press to surface of the work and produce the static pressure adding real-time change in man-hour with this；Ultrasonic vibration system itself is encouraged by digital supersonic power supply.
Described inner sleeve 5 is threadeded with inner sleeve front shroud 3, inner sleeve back shroud 8 respectively, and inner sleeve 5 is connected with outer sleeve 6 by location screw 18, and described outer sleeve 6 is threadeded with outer sleeve back shroud 15.
The outside of described outer sleeve 6 arranges outlet 9.
Being arranged with dust ring 11, fairlead 12 on described piston rod 16, piston 13 is rigidly attached with piston rod 16 and is integrated, and two air chambers that piston 13 is separated into are sealed by the sealing ring A14 of both sides, sealing ring B17 respectively, it is ensured that the course of processing is stable.
Described pressure transducer 10 is connected with computer by A/D converter, and computer is connected with proportional pressure-reducing valve by D/A converter.Static pressure time-varying control mode is, A/D converter inputs computer after the analogue signal that pressure transducer 10 exports is converted to digital signal, by comparing output digital feedback signal with default real-time static pressure, this digital signal is converted to analogue signal through D/A converter and drives proportional pressure-reducing valve to adjust output pressure, thus drive piston rod 16 to axially move by changing gas pressure intensity in two air chambers, it is achieved the real-time monitoring of static pressure.Filtering pressure reducing valve is when input pressure oscillation, and pressure reducing valve membrane sheet is made adjustment automatically, makes pressure export smoothly, it is ensured that pressure stability.
Described ultrasonic transducer 4 is piezoelectric ceramic transducer.
Described horn 2 is ladder-tapering-horn,stepped, and there is spherical groove the center of its front end.
Described milled head 1 is spherosome.
The pressure transition that piston rod biography 16 is passed by described pressure transducer 10 is the signal of telecommunication, to reflect current real-time static pressure numerical value.
Described ultrasonic vibration system is attached to inner sleeve, piston 13, piston rod 16, dust ring 11, fairlead 12 and sealing ring A14 and sealing ring B17 are attached to outer sleeve, and be flange plate type structure bottom outer sleeve, conveniently it is clamped on the most horizontal or vertical numerical control machining center cutter tower.
The beneficial effects of the present invention is: the time-varying realizing static pressure during ultrasonic surface rolling and processing accurately controls, have that degree of accuracy is high, operate steadily, can realize the advantage that synchronised automatic controls, the high added value component of machine with serviceabilities such as high resisting fatigue/corrosion-resistant/wear-resistant can be obtained.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the illustrative example of the present invention and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.
Fig. 1 is the structure cross-sectional schematic of the present invention；
Fig. 2, Fig. 3 be the present invention ultrasonic surface rolling and processing during the static pressure Quick uniform lower material surface cross section microscopic appearance of change.
1, milled head；2, horn；3, inner sleeve front shroud；4, ultrasonic transducer；5, inner sleeve；6, outer sleeve；7, fan；8, inner sleeve back shroud；9, outlet；10, pressure transducer；11, dust ring；12, fairlead；13, piston；14, sealing ring A；15, outer sleeve back shroud；16, piston rod；17, sealing ring B；18, location screw.
Detailed description of the invention
Further illustrate detailed content and the detailed description of the invention thereof of the present invention below in conjunction with the accompanying drawings.
See shown in Fig. 1 and Fig. 2, the ultrasonic surface rolling device with controlled time-varying static pressure of the present invention, including ultrasonic transducer 4, horn 2, milled head 1, pressure transducer 10, piston 13 and piston rod 16, A/D converter, filtering pressure reducing valve, proportional pressure-reducing valve etc., it is characterised in that: described pressure transducer 10 is fixed on inner sleeve back shroud 8 by trip bolt；One end of piston rod 16, with external screw thread, screws with the internal thread hole at pressure transducer 10 center, and the other end is connected with piston；Outer sleeve 6 is divided into two air chambers by piston 13, is connected with filtering pressure reducing valve and proportional pressure-reducing valve by QI KOU respectively, and described filtering pressure reducing valve, proportional pressure-reducing valve are connected with source of the gas by air filter；The gas of left side air chamber is the gas inputted by filtering pressure reducing valve, pressure stability, and Top right gas is the gas of passing ratio air relief valve input, and pressure is less；The draught head of piston both sides promotes it to move right together with piston rod, and because adding milled head contact in man-hour surface of the work, therefore the action that moves to right of piston rod is then shown as pressure the most to the right by position limitation.Source of the gas bifurcation road after filtration is respectively through two air chambers being separated into by piston in filter air relief valve and proportional pressure-reducing valve input outer sleeve.The pressure that 2 air chambers draught head is formed is by pressure sensor senses and is converted to the signal of telecommunication, A/D converter inputs computer after analog electrical signal is converted to digital signal, by comparing output digital feedback signal with default real-time static pressure, this digital feedback signal is converted to analogue signal through D/A converter, proportional pressure-reducing valve is driven to adjust output pressure, air pressure after change causes the change of draught head in 2 air chambers, piston driving piston rod is promoted to axially move, it is achieved the real-time monitoring of static pressure.Horn 2 and piezoelectric ceramic transducer 4 are fixed together composition ultrasonic vibration system；Milled head 1 is fixed on ultrasonic vibration system front end by inner sleeve 5, and part spherosome embeds in the groove of horn 2 front end, and ultrasonic vibration system does supersonic frequency mechanical vibration in the axial direction, drives front end milled head 1 to do supersonic vibration；After fan 7 is placed in piezoelectric ceramic transducer 4, at work ultrasonic transducer 4 is cooled down；Controlled time-varying static pressure by controlling the air pressure in two air chambers by computer, is promoted piston rod to move so that ultrasonic vibration system axially moves, presses to surface of the work and produce the static pressure adding real-time change in man-hour with this；Ultrasonic vibration system itself is encouraged by digital supersonic power supply.
Described inner sleeve 5 is threadeded with inner sleeve front shroud 3, inner sleeve back shroud 8 respectively, and inner sleeve 5 is connected with outer sleeve 6 by location screw 18, and described outer sleeve 6 is threadeded with outer sleeve back shroud 15.
The outside of described outer sleeve 6 arranges outlet 9.
Being arranged with dust ring 11, fairlead 12 on described piston rod 16, piston 13 is rigidly attached with piston rod 16 and is integrated, and two air chambers that piston 13 is separated into are sealed by the sealing ring A14 of both sides, sealing ring B17 respectively, it is ensured that the course of processing is stable.
Described pressure transducer 10 is connected with computer by A/D converter, and computer is connected with proportional pressure-reducing valve by D/A converter.Static pressure time-varying control mode is, A/D converter inputs computer after the analogue signal that pressure transducer 10 exports is converted to digital signal, by comparing output digital feedback signal with default real-time static pressure, this digital signal is converted to analogue signal through D/A converter and drives proportional pressure-reducing valve to adjust output pressure, thus drive piston rod 16 to axially move by changing gas pressure intensity in two air chambers, it is achieved the real-time monitoring of static pressure.Filtering pressure reducing valve is when input pressure oscillation, and pressure reducing valve membrane sheet is made adjustment automatically, makes pressure export smoothly, it is ensured that pressure stability.
Described ultrasonic transducer 4 is piezoelectric ceramic transducer.
Described horn 2 is ladder-tapering-horn,stepped, and there is spherical groove the center of its front end.
Described milled head 1 is spherosome.
The pressure transition that piston rod biography 16 is passed by described pressure transducer 10 is the signal of telecommunication, to reflect current real-time static pressure numerical value.
Described ultrasonic vibration system is attached to inner sleeve, piston 13, piston rod 16, dust ring 11, fairlead 12 and sealing ring A14 and sealing ring B17 are attached to outer sleeve, and be flange plate type structure bottom outer sleeve, conveniently it is clamped on the most horizontal or vertical numerical control machining center cutter tower.
Carry out mechanical surface ultrasonic burnishing add man-hour when use comprises ultrasonic surface rolling device of the present invention, by ultrasonic surface rolling device by the ring flange clamping bottom outer sleeve 6 to Digit Control Machine Tool, milled head 1 is made to contact with surface of the work by regulation machine tool chief axis with the relative position of knife rest；Opening ultrasonic power, regulation electric current makes ultrasonic vibration system output add amplitude needed for man-hour；Open computer settings well real-time static pressure, then open source of the gas and each valve switch, after keeping the systems such as milled head invariant position to be automatically adjusted to static pressure predetermined value, start to start feed system and carry out mechanical surface ultrasonic burnishing processing.
The present invention carries out the intensive treatment test explanation of static pressure Quick uniform transition to titanium alloy material surface.
Use the present invention that titanium alloy workpiece surface carries out static pressure even transition process.Embodying static pressure situation of change for ease of directly perceived, this example rolling and processing is plane sample.
In this example, each important technological parameters is: milled head traverse feed speed 10mm/min, length feed step-length 100 μm, machining locus is as shown in Figure 2, static pressure is increased to 400N in calibration position by 200N Quick uniform, sintered carbide ball selected by milled head, diameter 15mm, exports amplitude 10 m, cast oil-in-water type coolant in rolling and processing region in the whole course of processing.
The sample transverse section microscopic appearance that this example obtains is as shown in Figure 3, owing to static pressure is the principal element affecting material plasticity deformation, therefore the static pressure uniformly increased can make the thickness of plastic deformation layer uniformly increase to the side that static pressure is big from the side that static pressure is little, and the Plastic Flow state that skin-material presents occurs significantly change the most therewith.
The foregoing is only the preferred embodiment of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modification, equivalent substitution and improvement made for the present invention etc., should be included within the scope of the present invention.
Claims (10)
1. a ultrasonic surface rolling device with controlled time-varying static pressure, including ultrasonic transducer (4), horn (2), milled head (1), pressure transducer (10), piston (13) and piston rod (16), A/D converter, filtering pressure reducing valve, proportional pressure-reducing valve etc., it is characterised in that: described pressure transducer (10) is fixed on inner sleeve back shroud (8) by trip bolt；One end of piston rod (16), with external screw thread, screws with the internal thread hole at pressure transducer (10) center, and the other end is connected with piston (13)；Outer sleeve (6) is divided into two air chambers by piston (13), is connected with filtering pressure reducing valve and proportional pressure-reducing valve by QI KOU respectively, and described filtering pressure reducing valve, proportional pressure-reducing valve are connected with source of the gas by air filter；Horn (2) and piezoelectric ceramic transducer (4) are fixed together composition ultrasonic vibration system；Milled head (1) is fixed on ultrasonic vibration system front end by inner sleeve (5), and part spherosome embeds in the groove of horn (2) front end, and ultrasonic vibration system does supersonic frequency mechanical vibration in the axial direction, drives front end milled head (1) to do supersonic vibration；After fan (7) is placed in piezoelectric ceramic transducer (4), controlled time-varying static pressure by computer by controlling the air pressure in two air chambers, promote piston rod to move so that ultrasonic vibration system axially moves, press to surface of the work and produce the static pressure adding real-time change in man-hour with this；Ultrasonic vibration system itself is encouraged by digital supersonic power supply.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterized in that: described inner sleeve (5) is threadeded with inner sleeve front shroud (3), inner sleeve back shroud (8) respectively, inner sleeve (5) is connected with outer sleeve (6) by location screw (18), and described outer sleeve (6) is threadeded with outer sleeve back shroud (15).
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: the outside of described outer sleeve (6) arranges outlet (9).
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterized in that: on described piston rod (16), be arranged with dust ring (11), fairlead (12), piston (13) is rigidly attached with piston rod (16) and is integrated, and two air chambers that piston (13) is separated into are respectively by the sealing ring A(14 of both sides), sealing ring B(17) seal.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: described pressure transducer (10) is connected with computer by A/D converter, and computer is connected with proportional pressure-reducing valve by D/A converter；A/D converter inputs computer after the analogue signal that pressure transducer (10) exports is converted to digital signal, by comparing output digital feedback signal with default real-time static pressure, this digital signal is converted to analogue signal through D/A converter and drives proportional pressure-reducing valve to adjust output pressure, thus drive piston rod (16) to axially move by changing gas pressure intensity in two air chambers, it is achieved the real-time monitoring of static pressure.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: described ultrasonic transducer (4) is piezoelectric ceramic transducer.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: described horn (2) is ladder-tapering-horn,stepped, and there is spherical groove the center of its front end.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: described milled head (1) is spherosome.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterised in that: the pressure transition that piston rod (16) passes over is the signal of telecommunication by described pressure transducer (10), to reflect current real-time static pressure numerical value.
The ultrasonic surface rolling device with controlled time-varying static pressure the most according to claim 1, it is characterized in that: described ultrasonic vibration system is attached to inner sleeve, piston (13), piston rod (16), dust ring (11), fairlead (12) and sealing ring A(14) and sealing ring B(17) to be attached to bottom outer sleeve, and outer sleeve be flange plate type structure.
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Cited By (11)
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|---|---|---|---|---|
| CN106283038A (en) * | 2016-08-25 | 2017-01-04 | 吉林大学 | Improve the ultrasonic burnishing recombination laser remelting method of fatigue properties of welded joints |
| CN106346192A (en) * | 2016-09-13 | 2017-01-25 | 华东理工大学 | Ultrasonic rolling technique |
| CN106363344A (en) * | 2016-09-13 | 2017-02-01 | 华东理工大学 | Ultrasonic roll finishing device adaptable to complex surfaces |
| CN109465598A (en) * | 2018-11-23 | 2019-03-15 | 浙江工业大学 | Pole tensile sample roll processing device |
| CN109822291A (en) * | 2019-04-11 | 2019-05-31 | 华东理工大学 | A method of the heterogeneous multi-layer sheet structure of metal is prepared based on ultrasonic burnishing technology |
| CN110064890A (en) * | 2019-05-24 | 2019-07-30 | 河南理工大学 | A kind of sound fluid-solid coupling two-dimensional ultrasound depth rolling processing unit (plant) |
| CN110527807A (en) * | 2019-09-12 | 2019-12-03 | 北京航空航天大学 | A kind of method of the progressive reinforcing of complexity metal surface numerical control |
| CN110561031A (en) * | 2019-10-21 | 2019-12-13 | 济南大学 | Static pressure controllable ultrasonic surface rolling method and device |
| CN110869163A (en) * | 2017-04-21 | 2020-03-06 | 通用电气公司 | Ultrasonic roller polishing system and method for machining a part |
| CN114752740A (en) * | 2022-04-12 | 2022-07-15 | 北京航空航天大学 | Pneumatic rolling tool for metal surface nanocrystallization |
| CN114769431A (en) * | 2022-04-27 | 2022-07-22 | 河南科技大学 | Dynamic fixing device for ultrasonic rolling extrusion rolling head |
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| CN106283038A (en) * | 2016-08-25 | 2017-01-04 | 吉林大学 | Improve the ultrasonic burnishing recombination laser remelting method of fatigue properties of welded joints |
| CN106346192A (en) * | 2016-09-13 | 2017-01-25 | 华东理工大学 | Ultrasonic rolling technique |
| CN106363344A (en) * | 2016-09-13 | 2017-02-01 | 华东理工大学 | Ultrasonic roll finishing device adaptable to complex surfaces |
| CN110869163B (en) * | 2017-04-21 | 2022-04-26 | 通用电气公司 | Ultrasonic roller polishing system and method for machining a part |
| CN110869163A (en) * | 2017-04-21 | 2020-03-06 | 通用电气公司 | Ultrasonic roller polishing system and method for machining a part |
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| CN109465598A (en) * | 2018-11-23 | 2019-03-15 | 浙江工业大学 | Pole tensile sample roll processing device |
| CN109822291A (en) * | 2019-04-11 | 2019-05-31 | 华东理工大学 | A method of the heterogeneous multi-layer sheet structure of metal is prepared based on ultrasonic burnishing technology |
| CN109822291B (en) * | 2019-04-11 | 2021-02-12 | 华东理工大学 | Method for preparing metal heterogeneous layer sheet structure based on ultrasonic rolling technology |
| CN110064890A (en) * | 2019-05-24 | 2019-07-30 | 河南理工大学 | A kind of sound fluid-solid coupling two-dimensional ultrasound depth rolling processing unit (plant) |
| CN110527807A (en) * | 2019-09-12 | 2019-12-03 | 北京航空航天大学 | A kind of method of the progressive reinforcing of complexity metal surface numerical control |
| CN110561031A (en) * | 2019-10-21 | 2019-12-13 | 济南大学 | Static pressure controllable ultrasonic surface rolling method and device |
| CN110561031B (en) * | 2019-10-21 | 2023-10-03 | 济南大学 | Static pressure controllable ultrasonic surface rolling method and device |
| CN114752740A (en) * | 2022-04-12 | 2022-07-15 | 北京航空航天大学 | Pneumatic rolling tool for metal surface nanocrystallization |
| CN114769431A (en) * | 2022-04-27 | 2022-07-22 | 河南科技大学 | Dynamic fixing device for ultrasonic rolling extrusion rolling head |
| CN114769431B (en) * | 2022-04-27 | 2024-03-29 | 河南科技大学 | Dynamic fixing device for ultrasonic rolling extrusion rolling head |
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Application publication date: 20160817 |