CN103894560A - Ultrasonic amplitude transformer for aluminum alloy semi-continuous casting - Google Patents
Ultrasonic amplitude transformer for aluminum alloy semi-continuous casting Download PDFInfo
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- CN103894560A CN103894560A CN201310524455.9A CN201310524455A CN103894560A CN 103894560 A CN103894560 A CN 103894560A CN 201310524455 A CN201310524455 A CN 201310524455A CN 103894560 A CN103894560 A CN 103894560A
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Abstract
The invention discloses the design of an ultrasonic amplitude transformer which is suitable for aluminum alloy semi-continuous casting. The ultrasonic amplitude transformer is mainly characterized in that (1) ultrasonic energy can be effectively transmitted into an aluminum alloy melt body, and stable normal work can be achieved in the high-temperature melt body; (2) the intensity of ultrasonic energy can be uniform and even as much as possible at the solidification front; (3) the ultrasonic amplitude transformer is matched with an ultrasonic transduction system; and (4) maintaining is convenient, and standardization and serialization can be achieved. The ultrasonic amplitude transformer is compact in structure, the transmission effect range is wide, the requirement of large aluminum alloy casting can be met, and wide promotion and application value is achieved.
Description
Technical field
The present invention relates to a kind of ultrasonic amplitude transformer that large-size aluminum alloy casting requires that is applied to, this ultrasonic transformer be can be for experiment condition and industrial mechanical device, and method operation and maintenance facilitate, and can realize standardization and seriation.
Background technology
Aero-Space delivery equipment is the commanding elevation of international competition, is the comprehensive embodiment of national core scientific and technological strength, is to lead and support the national economic development, the strong guarantee of consolidating national defense, safeguarding national security.But at present, manufacturing capacity and the demand of China's high performance material exist gap, manufacturing capacity can't meet Aero-Space delivery equipment military service performance great-leap-forward development requirement.And along with fierce international competition, this gap just highlights further.
Although can manufacture experimently out high alloy (7B50 alloy) ingot blank that thickness reaches 600mm at present, in dimensions, do not reach yet the requirement of the required thick ingot blank of 800mm of correlated strategy engineering, and there is larger gap in the performance quality of ingot blank.Therefore, the shaping problem of becoming second nature of the large specification ingot blank of super high-strength alloy is still the important bottleneck that large complicated high-performance member is manufactured.
And ultrasonic field is applied to the process of setting of material can obtain routine casting time incomparable technological effect, thereby can obtain the cast article of high-quality.Meanwhile, simple, the easy to operate and environmentally safe of ultrasonic wave conduction equipment, thereby this technology has been subject to great attention.But at present traditional ultrasonic transformer structure end face is plane, ultrasonic energy substantially along ultrasonic transformer length direction perpendicular to end face transmission, cause ultrasonic transmission sphere of action limited, can not meet the requirement of large-size aluminum alloy casting.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of sphere of action that expands ultrasonic field, improves the ultrasonic amplitude transformer for aluminum alloy semi-continuous casting of the action effect of ultrasonic casting.
In order to solve the problems of the technologies described above, the ultrasonic amplitude transformer that is applicable to large-size aluminum alloy casting provided by the invention, as shown in Figure 1, is characterized in that: Transformer design outward appearance is capitate planar end surface.
Adopt the ultrasonic amplitude transformer for aluminum alloy semi-continuous casting of technique scheme, the working front edge face of ultrasonic transformer is processed into plane, when vertically the sound wave of incident passes to cylindrical planar end surface, for aluminum melt, interfacial sound wave is vertical incidence, and hyperacoustic radiation intensity obviously increases.
The present invention is a kind of collection ultrasonic technique, and metal freezing technology, vibrotechnique, in the integrated technology of one, are refinement cast sturctures in the large size ingot-casting casting process of a kind of high-performance aluminium alloy, improve mechanical property, subdue the device of crackle.Can effectively ultrasonic energy be delivered in aluminium alloy melt, in high-temperature fusant, can stablize normal work; Can make the intensity of ultrasonic energy at solidification front uniformity as far as possible; Mate with ultrasonic transducer system; Easy to maintenance, can realize standardization and seriation.
The present invention has significantly expanded the action intensity of ultrasonic field, is applicable to semi-continuous casting and the continuous casting of large-size aluminum alloy ingot, has wide popularization and application and is worth.
In sum, the present invention is a kind of sphere of action that expands ultrasonic field, improves the ultrasonic amplitude transformer for aluminum alloy semi-continuous casting of the action effect of ultrasonic casting.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is original ultrasonic casting sound wave conduction schematic diagram.
Fig. 3 is ultrasonic casting sound wave conduction schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Referring to Fig. 1, this device adds ultrasonic wave outfield in the time of high strength alumin ium alloy semi-continuous casting, utilizes ultrasonic wave to control crystallite dimension, solute Distribution, surface quality and crackle, reduces ingot blank built-in thermal stress to reach, eliminate underbead crack, obtain the object of the large size ingot-casting of high-quality.Wherein the performance of ultrasonic machining device is especially crucial, it is mainly by supersonic generator 9, transducer 1, positioning fixture 2, displacement operation platform 8, ultrasonic transformer 3, thermocouple 6 and temperature controller and recorder 7 form, and the working front edge face of ultrasonic transformer 3 is plane 5, the effect of ultrasonic transformer is that high frequency electrical signal is converted to mechanical oscillation, and the displacement of mechanical oscillation or speed are amplified, make concentration of energy on less radiating surface, its acoustic characteristic is extremely important to whole ultrasonic machining device.
Referring to Fig. 2, the working front edge face of original ultrasonic transformer 3 is plane, the incidence wave edge in ultrasonic transformer 3
when axle negative sense is delivered to the end face of ultrasonic transformer 3, because ultrasonic transformer 3 is different from the characteristic impedance of aluminium alloy melt 4, sound wave will continue edge
the transmission of axle negative sense is entered in aluminium alloy melt 4.For sound wave vertical incidence, acoustic energy utilization rate higher (
), process small-sized ingot casting, under cavitation and acoustic streaming stirring action, can reach good effect, during for the larger size ingot-casting of ultrasonic Foundry Production, in order to expand hyperacoustic sphere of action, can introduce many cover ultrasonic vibration systems at diverse location.
Because aluminium alloy melt 4 fluids do not have solid shape, its boundary shape is mainly taken at contacted medium profile, for ultrasonic transformer-aluminium alloy melt system, the working front edge face shape of ultrasonic transformer 3 has determined interface shape, thereby has also determined interface place sound direction of wave travel.The working front edge face of ultrasonic transformer 3 is processed into plane 5, and as shown in Figure 3, when vertically the sound wave of incident passes to the plane 5 of ultrasonic transformer 3, for aluminium alloy melt 4, interfacial sound wave is vertical incidence, and the radiation intensity of sound wave obviously increases.
The end face of ultrasonic transformer 3 is processed into plane 5, has significantly expanded the action intensity of ultrasonic field, is applicable to semi-continuous casting and the continuous casting of large-size aluminum alloy ingot, has wide popularization and application and is worth.
Claims (3)
1. one kind is applicable to the ultrasonic amplitude transformer of aluminum alloy semi-continuous casting, comprise supersonic generator and ultrasonic wave transfer device, it is characterized in that it is made up of cooling fan (1), sleeve (2), ring flange (3), fastening block (4), pad (5), ultrasonic transducer (6), waveguide rod (7), ultrasonic transformer (8), tool heads (9), bolt (10), screw (11); Described cooling fan is fixed by screws in the solid upper end of sleeve, and described ring flange is fixed by screws in sleeve lower end; Described ultrasonic transducer is placed in sleeve, is fixed together by fastening block and ring flange; Described waveguide rod is fixed together by bolt and ultrasonic transducer; Described ultrasonic transformer by bolt together with waveguide rod stator; Described tool heads is fixed together by bolt and ultrasonic transformer.
2. according to the ultrasonic wave transfer device described in claim 1, it is characterized in that: ultrasonic wave is delivered in aluminium liquid by waveguide rod (7), ultrasonic transformer (8), tool heads (9) three.
3. according to ultrasonic generator described in claim 1, it is characterized in that: the electric energy of 220V operating voltage output is converted to ultra sonic machinery energy by the piezo-electric effect by piezoelectric ceramics and electrode slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524455.9A CN103894560A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic amplitude transformer for aluminum alloy semi-continuous casting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310524455.9A CN103894560A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic amplitude transformer for aluminum alloy semi-continuous casting |
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| CN103894560A true CN103894560A (en) | 2014-07-02 |
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| CN201310524455.9A Pending CN103894560A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic amplitude transformer for aluminum alloy semi-continuous casting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439204A (en) * | 2014-12-09 | 2015-03-25 | 广西大学 | Metal mold casting and molding device based on ultrasonic waves |
| CN105522131A (en) * | 2016-02-02 | 2016-04-27 | 吉林大学 | Magnesium alloy bar power ultrasonic semi-continuous casting and flaw detection device and method |
| CN108348993A (en) * | 2015-09-10 | 2018-07-31 | 南线有限责任公司 | Ultrasonic crystal grain refinement and outgassing routine and system for metal casting |
| CN112974744A (en) * | 2021-05-12 | 2021-06-18 | 中国航发北京航空材料研究院 | Manufacturing device and manufacturing method of aluminum alloy ingot |
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| JPH02295640A (en) * | 1989-05-08 | 1990-12-06 | Kobe Steel Ltd | Production of aluminum alloy having excellent high temperature strength |
| CN101234420A (en) * | 2008-03-05 | 2008-08-06 | 辽宁工业大学 | Ultrasound wave compression mold casting method and special-purpose equipment thereof |
| CN102554195A (en) * | 2011-12-31 | 2012-07-11 | 大连理工大学 | Power ultrasonic device for treating high-temperature metal melt under vacuum state and method thereof |
| CN202516758U (en) * | 2012-05-06 | 2012-11-07 | 安徽工业大学 | Connecting device for ultrasonic amplitude transformer and toolhead |
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2013
- 2013-10-31 CN CN201310524455.9A patent/CN103894560A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02295640A (en) * | 1989-05-08 | 1990-12-06 | Kobe Steel Ltd | Production of aluminum alloy having excellent high temperature strength |
| CN101234420A (en) * | 2008-03-05 | 2008-08-06 | 辽宁工业大学 | Ultrasound wave compression mold casting method and special-purpose equipment thereof |
| CN102554195A (en) * | 2011-12-31 | 2012-07-11 | 大连理工大学 | Power ultrasonic device for treating high-temperature metal melt under vacuum state and method thereof |
| CN202516758U (en) * | 2012-05-06 | 2012-11-07 | 安徽工业大学 | Connecting device for ultrasonic amplitude transformer and toolhead |
Non-Patent Citations (4)
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| 李晓谦等: "超声施振深度和冷却方式对纯铝凝固组织的影响", 《北京理工大学学报》, vol. 28, no. 4, 30 April 2008 (2008-04-30), pages 290 - 293 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439204A (en) * | 2014-12-09 | 2015-03-25 | 广西大学 | Metal mold casting and molding device based on ultrasonic waves |
| CN108348993A (en) * | 2015-09-10 | 2018-07-31 | 南线有限责任公司 | Ultrasonic crystal grain refinement and outgassing routine and system for metal casting |
| CN105522131A (en) * | 2016-02-02 | 2016-04-27 | 吉林大学 | Magnesium alloy bar power ultrasonic semi-continuous casting and flaw detection device and method |
| CN112974744A (en) * | 2021-05-12 | 2021-06-18 | 中国航发北京航空材料研究院 | Manufacturing device and manufacturing method of aluminum alloy ingot |
| CN112974744B (en) * | 2021-05-12 | 2021-09-14 | 中国航发北京航空材料研究院 | Manufacturing device and manufacturing method of aluminum alloy ingot |
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Application publication date: 20140702 |