CN102069177A - Vibrational casting experimental device - Google Patents
Vibrational casting experimental device Download PDFInfo
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- CN102069177A CN102069177A CN 201110024247 CN201110024247A CN102069177A CN 102069177 A CN102069177 A CN 102069177A CN 201110024247 CN201110024247 CN 201110024247 CN 201110024247 A CN201110024247 A CN 201110024247A CN 102069177 A CN102069177 A CN 102069177A
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Abstract
The invention discloses a vibrational casting experimental device. The device comprises a rack, a sample mould, a mould installing device, a vibrating device, a damping device and a vibration direction adjusting device, wherein the vibrating device comprises a vibration motor installing board, vibration motors installed on the vibration motor installing board and speed controllers for controlling the vibration motors; the damping device comprises damping springs, compression springs, compression spring supporting bases and compression spring adjusting bolts; and the vibration direction adjusting device comprises an adjusting screw rod, an adjusting rotating arm and a supporting arm. The device has the following advantages: different frequencies of vibration can be obtained by adjusting the speed controllers; different amplitudes and vibration forces are obtained by adjusting the compression spring adjusting bolts or amplitude adjusting devices carried by the vibration motors; linear vibrations in different directions are obtained by the adjusting screw rod; linear vibrations at different angles are obtained by changing the installation direction of the sample mould; and linear vibrations or three-dimensional circular vibrations are obtained by the vibration motors, thus meeting the experimental requirements of metal materials for different vibration frequencies, amplitudes and vibration directions.
Description
Technical field
The present invention relates to the vibrational casting technical field, particularly a kind of vibrational casting experimental provision.
Background technology
20 beginnings of the century, the research that vibration is used in the metal freezing field has caused widely to be paid attention to.Research object relates to ferrous metal, non-ferrous metal and alloy thereof, and wherein aluminium alloy research is the widest.By vibrative method difference, vibratory equipment can be divided into machinery, pneumatic, electromagnetism and ultrasonic vibration etc.A large amount of researchs draw, metal bath during ultrasonic vibration, electric and magnetic oscillation or mechanical oscillation put on and solidify, can make metal promoted forming core, broken dendrite (grain refinement), reduce segregation (homogenizing tissue), degasification removal of impurities (purification melt), strengthen feeding, density raising etc., also influence size, form and the distribution of second phase simultaneously, thereby improve the foundry goods crystalline structure, improve cast properties.Comparatively speaking, because the application of simple and easy and low-cost mechanical vibration wants general many.Present research majority is that casting mold is applied vibration, and practice shows that to light casting in general, adopting mechanical system that casting mold is applied vibration is a kind of reasonable efficient ways.Domestic scholars is studied often for vibration in the removal of impurities of degassing of the influence aspect metal structure and the mechanical property and melt.And all study fewerly to filling of aluminium alloy gravitational casting is domestic aspect type, degasification removal of impurities, the feeding in mechanical oscillation.The A356 aluminium alloy has good mechanical performance, physical property and corrosion resistance, and light weight, and the intensity height is the preferred material of aluminum automobile, hub of motorcycle.If with regard to mechanical oscillation to A356 aluminium alloy cavity filling energy, gas be mingled with, the influence and the mechanism of aspects such as density (riser feeding effect), grain structure and mechanical property does a comprehensively research, and the vibration clotting technology is used for the aluminium alloy wheel hub gravitational casting, then can alleviate casting flaws such as misrun, micro-gas, shrinkage cavity, reduce the alloy grain degree, improve mechanical property, alleviate rising head weight, improve product yield, have bigger Practical significance.
In the prior art, Chinese patent 200710168429.1 discloses a kind of " lost foam casting vibration clotting method ".The mechanical vibration generator system of vibrating motor vibration is adopted in vibration in this method, perhaps adopts the shake table of electric and magnetic oscillation or eccentric vibration.Should " based on lost-foam casting method of vibration clotting " it is characterized in that: before liquid metal cast step, in the liquid metal cast step process and the solidificating period after solidificating period or the liquid metal cast step, the sandbox that Foam Pattern and loose sand are housed is implemented vibration, vibration frequency is that 10～100Hz, amplitude are 0.1～3.0mm, and the rotating speed that orders about the vibrating motor of vibration is 750～3000rpm; After all solidifying and finish, foundry goods stops vibration.This invention is obvious to the foundry goods tissue thinning effect, and performance improves a lot.But the device that this method and this method adopt only is suitable for the lost foam casting of non-ferrous metal part such as aluminium alloy, magnesium alloy, copper alloy and ferrous metal parts such as cast iron, cast steel.Direction of vibration is fixed, and adaptability is relatively poor.
Summary of the invention
At weak point of the prior art, the invention provides a kind of vibrational casting experimental provision that can continuously change vibration frequency, amplitude and direction of vibration according to the actual requirements; Use this vibration testing device to experimentize, can study influence by changing different vibration frequencies, amplitude and direction of vibration to casting filling, the removal of impurities of degassing, feeding, crystal grain thinning and mechanical property.
Vibrational casting experimental provision provided by the invention comprises frame, sample mould, mould erecting device, vibrating device, damping device and direction of vibration adjusting device;
Described mould erecting device comprises the mold mounting plate that is used to install sample mould; Described mold mounting plate is installed in the over top of frame by vibrating device;
Described vibrating device involving vibrations motor mounting plate, vibrating motor I, vibrating motor II, speed regulator I and speed regulator II; Described vibrating motor I and vibrating motor II are installed on the motor mounting plate; Described speed regulator I is serially connected between vibrating motor I and the vibrating motor power supply, and described speed regulator II is serially connected between vibrating motor II and the vibrating motor power supply;
Described damping device comprises damping spring, compression spring, compression spring supporting seat and compression spring adjusting bolt; One end of described damping spring is fixedly connected on the mold mounting plate, and the other end is fixedly connected on the top of frame; One end of described compression spring supporting seat is fixed on the top of frame, and the other end stretches to the top of mold mounting plate, and described compression spring is arranged between the other end and mold mounting plate of compression spring supporting seat; Described compression spring adjusting bolt passes the other end of compression spring supporting seat by the mode of threaded engagement and is pressed on the compression spring;
Described direction of vibration adjusting device comprises regulates screw mandrel, adjusting turning arm and support arm; One end of described adjusting turning arm is rotating to be connected on the mold mounting plate, and the other end is fixedlyed connected with the vibrating motor installing plate; Described adjusting screw mandrel and support arm are arranged on the both sides of regulating turning arm, regulate all rotating being connected on the mold mounting plate of an end of screw mandrel and support arm; One end of described motor mounting plate is being connected with the other end of regulating screw mandrel along the mode that the length direction of regulating screw mandrel is regulated; The other end of described motor mounting plate is being connected with the other end of support arm along the mode that support arm slides.
Further, described vibrating device is a quadruplet, is separately positioned on four angular positions of mold mounting plate.
Compared with prior art, vibrational casting experimental provision of the present invention has following beneficial effect:
1) vibrational casting experimental provision of the present invention, can conveniently adjust vibration frequency, amplitude and direction of vibration, therefore can test and study the influence that vibration frequency, amplitude and direction of vibration fill mold-filling capacity in type and the process of setting, feeding effect, the removal of impurities ability of degassing, crystal grain thinning and improve the mechanical property aspect metal bath by the vibrational casting under the different technical parameters condition.Can be used for the vibrational casting experiment of unlike material, both improved the adaptive capacity of system, and easy to operate.
2) frequency, amplitude and the direction of vibration scope that can adjust of vibrational casting experimental provision of the present invention is bigger, can realize straight-line oscillation and three-dimensional circular vibration.
3) experimental provision of the present invention is simple in structure, and energy resource consumption is little, good reliability.
Description of drawings
Fig. 1 is the front view of vibrational casting experimental provision vertical line vibration of the present invention;
Fig. 2 is the vertical view of vibrational casting experimental provision vertical line vibration of the present invention;
Fig. 3 is the right view of vibrational casting experimental provision vertical line vibration of the present invention;
Fig. 4 is the front view of 45 ° of straight-line oscillations of vibrational casting experimental provision of the present invention;
Fig. 5 is the front view of vibrational casting experimental provision horizontal linear vibration of the present invention;
Fig. 6 is the front view of the three-dimensional circular vibration of vibrational casting experimental provision of the present invention;
Fig. 7 is the vertical view of the three-dimensional circular vibration of vibrational casting experimental provision of the present invention.
In the accompanying drawing: 1-frame; 2-sample mould; 3-mold mounting plate; 4-vibrating motor installing plate; 5-vibrating motor I; 6-vibrating motor II; 7-speed regulator I; 8-speed regulator II; 9-damping spring; 10-compression spring; 11-compression spring supporting seat; 12-compression spring is regulated bolt; 13-adjusting screw mandrel; 14-adjusting screw mandrel fastening bolt; 15-adjusting turning arm; 16-support arm; 17-support arm fastening bolt; 18-mould fastening bolt.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to the present invention to further detailed explanation.
Shown in Fig. 1～3, the vibrational casting device comprises frame 1, sample mould 2, mould erecting device, vibrating device, damping device and direction of vibration adjusting device.
The mould erecting device comprises mold mounting plate 3 and the mould fastening bolt 18 that is used to install sample mould 2, and mold mounting plate 3 is installed in the over top of frame 1 by vibrating device, and sample mould 2 is installed on the mold mounting plate 3 by fastening bolt 18.Sample mould 2 rotatable 90 ° of installations can obtain the straight-line oscillation of different angles in XOZ plane and the YOZ plane by the installation direction of conversion sample mould 2.
Damping device comprises damping spring 9, compression spring 10, compression spring supporting seat 11 and compression spring adjusting bolt 12.One end of damping spring 9 is fixedly connected on the mold mounting plate 3, and the other end is fixedly connected on the top of frame 1, makes mold mounting plate 3 produce the vibration of certain amplitude, and alleviates the vibrations to frame 1.The two ends of compression spring supporting seat 11 outwards bend, and an end of compression spring supporting seat 11 is fixed on the top of frame 1, and the other end stretches to the top of mold mounting plate 3, and compression spring 10 is arranged between the other end and mold mounting plate 3 of compression spring supporting seat 11; The other end of compression spring supporting seat 11 is provided with screwed hole, and the compression spring is regulated bolt 12 and passed the screwed hole that compresses spring supporting seat 11 by the mode of threaded engagement, and the bottom that the compression spring is regulated bolt 12 is pressed on the compression spring 10.Compression spring 10 reduces the vibration force that mold mounting plate 3 makes progress, and reduces vibration acceleration upwards; And can regulate the damping capacity that bolt 12 changes compression spring 10, thereby regulate vibration force and amplitude size to mold mounting plate 3 by regulating the compression spring.
The direction of vibration adjusting device comprises regulates screw mandrel 13, adjusting screw mandrel fastening bolt 14, adjusting turning arm 15, support arm 16 and support arm fastening bolt 17.Regulate rotating being connected on the mold mounting plate 3 of an end of turning arm 15, the other end is fixedlyed connected (present embodiment, fixedly connected with the middle part of vibrating motor installing plate 4 in the bottom of adjusting turning arm 15) with vibrating motor installing plate 4.Regulate screw mandrel 13 and support arm 16 and be arranged on the both sides of regulating turning arm 15, regulate rotating being connected on the mold mounting plate 3 of an end of screw mandrel 13, one end of motor mounting plate 4 is being connected (in the present embodiment with the other end of regulating screw mandrel 13 along the mode that the length direction of regulating screw mandrel 13 is regulated, rotation set has nut on the adjusting screw mandrel 13, and nut is connected with an end of motor mounting plate 4 by regulating screw mandrel fastening bolt 14); One end of support arm 16 is rotating to be connected on the mold mounting plate 3, the other end of motor mounting plate 4 is being connected (in the present embodiment with the other end of support arm 16 along the mode that support arm 16 slides, its length direction of support arm 16 upper edges is provided with bar hole, the other end of motor mounting plate 4 can move along bar hole, after moving into place, the other end of motor mounting plate 4 is fixing with support arm 16 by support arm fastening bolt 17).
Vibrating device involving vibrations motor mounting plate 4, vibrating motor I5, vibrating motor II6, speed regulator I7 and speed regulator II8.Vibrating motor I5 and vibrating motor II6 are installed on the motor mounting plate 4; Speed regulator I7 is serially connected between vibrating motor I5 and the vibrating motor power supply, and speed regulator II8 is serially connected between vibrating motor II6 and the vibrating motor power supply.
In the present embodiment, vibrating device is a quadruplet, is separately positioned on four angular positions of mold mounting plate 3.Mold mounting plate 3 is arranged on the frame 1 by the quadruplet vibrating device, and mold mounting plate 3 is whole stressed even during vibration.
The direction of vibration adjusting device mainly is that vibrating device and mould erecting device are coupled together, and is used for the vibration that the transmitting vibrations motor produces certain frequency, amplitude, and regulates direction of vibration.After will regulating screw mandrel fastening bolt 14 and support arm fastening bolt 17 and unclamping, screw mandrel 13 is regulated in turn just can regulate the straight-line oscillation directions continuously at 0 ° ~ 90 °, thereby reaches requirement of experiment.Change the vibrating motor I5 be installed on the motor mounting plate 4 and the installation site of vibrating motor II6, can obtain straight-line oscillation (two parallel and rotations in opposite directions of vibrating motor pivot center, as Fig. 1 ~ 5) with three-dimensional circular vibration (two vibrating motor pivot centers are vertical, as Fig. 6 ~ 7); Regulate two vibrating motors and carry the eccentricity excitation piece, can change Oscillation Amplitude and exciting force; Speed regulator I7 and speed regulator II8 carry out speed governing to vibrating motor I5 and vibrating motor II6 respectively, to obtain different vibration frequencies.
When using this vibrational casting experimental provision: sample mould 2 is installed on the mold mounting plate 3, must tighten mould fastening bolt 18; Regulate direction of vibration by regulating screw mandrel 13, be adjusted to satisfy the experiment demand after, must tighten and regulate screw mandrel fastening bolt 14 and support arm fastening bolt 17.
Utilize the vibrational casting experimental provision that the A356 aluminium alloy melt is carried out the vibrating casting experiment, sample has the spiral sample of measuring the cavity filling energy, the test block of horizontal feeding effect is measured in the degas test block of removal of impurities of mensuration, measures the test block of vertical feeding effect and the tensile sample of measuring mechanical property.
Use this vibrational casting experimental provision to carry out method for measuring, comprise the steps:
(1) utilize the adjusting screw mandrel of direction of vibration adjusting device that direction of vibration is transferred to required angle after, tighten and regulate screw mandrel fastening bolt and support arm fastening bolt;
(2) utilize speed regulator to regulate the vibrating motor rotating speed, vibration frequency is adjusted to requirement of experiment;
(3) regulate vibrating motor eccentricity excitation piece or adjusting compression spring adjusting bolt, Oscillation Amplitude reaches requirement of experiment;
(4) with behind the sample mould preheating temperature to 250 ℃ ~ 350 ℃, be installed on the mold mounting plate;
(5) open vibrating motor, after vibrating device operated steadily, the metal bath that melting is handled well poured in the sample mould;
(6) after sample solidifies fully, close vibrating motor, sample is taken out in die sinking;
(7) change vibration frequency respectively according to requirement of experiment and (be respectively 30Hz, 60Hz, 90Hz), amplitude (is respectively 0.4mm, 0.8mm, 1.2mm) and direction of vibration (be respectively vertical line vibration, 45 ° of straight-line oscillations, horizontal linear vibration, three-dimensional circular vibration) wait technological parameter to carry out vibrating casting to test;
(8) change sample mould, repeating step (1) ~ (7), to vibration fill type, feeding at metal bath, the removal of impurities of degassing, crystal grain thinning and the influence that improves aspect the mechanical property test;
(9) handle experimental sample, grind metallographic, measure sample and fill type length, observe the sample pin hole, be mingled with, shrinkage defect and grain size, tensile sample data relatively, analyze vibration frequency, amplitude, direction of vibration to metal bath fill type, feeding, the removal of impurities of degassing, crystal grain thinning and improve the influence and the rule of mechanical property.
Through test, this device is convenient and reliable, helps to test the correct of enforcement and conclusion.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. a vibrational casting experimental provision is characterized in that: comprise frame (1), sample mould (2), mould erecting device, vibrating device, damping device and direction of vibration adjusting device;
Described mould erecting device comprises the mold mounting plate (3) that is used to install sample mould (2); Described mold mounting plate (3) is installed in the over top of frame (1) by vibrating device;
Described vibrating device involving vibrations motor mounting plate (4), vibrating motor I(5), vibrating motor II(6), speed regulator I(7) and speed regulator II(8); Described vibrating motor I(5) and vibrating motor II(6) be installed on the motor mounting plate (4); Described speed regulator I(7) be serially connected in vibrating motor I(5) and the vibrating motor power supply between, described speed regulator II(8) be serially connected in vibrating motor II(6) and the vibrating motor power supply between;
Described damping device comprises damping spring (9), compression spring (10), compression spring supporting seat (11) and compression spring adjusting bolt (12); One end of described damping spring (9) is fixedly connected on the mold mounting plate (3), and the other end is fixedly connected on the top of frame (1); One end of described compression spring supporting seat (11) is fixed on the top of frame (1), and the other end stretches to the top of mold mounting plate (3), and described compression spring (10) is arranged between the other end and mold mounting plate (3) of compression spring supporting seat (11); Described compression spring adjusting bolt (12) passes the other end of compression spring supporting seat (11) by the mode of threaded engagement and is pressed on the compression spring (10);
Described direction of vibration adjusting device comprises regulates screw mandrel (13), adjusting turning arm (15) and support arm (16); One end of described adjusting turning arm (15) is rotating to be connected on the mold mounting plate (3), and the other end is fixedlyed connected with vibrating motor installing plate (4); Described adjusting screw mandrel (13) and support arm (16) are arranged on the both sides of regulating turning arm (15), regulate all rotating being connected on the mold mounting plate (3) of an end of screw mandrel (13) and support arm (16); One end of described motor mounting plate (4) is being connected with the other end of regulating screw mandrel (13) along the mode that the length direction of regulating screw mandrel (13) is regulated; The other end of described motor mounting plate (4) is being connected with the other end of support arm (16) along the mode that support arm (16) slides.
2. vibrational casting experimental provision according to claim 1 is characterized in that: described vibrating device is a quadruplet, is separately positioned on four angular positions of mold mounting plate (3).
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| CN201110024247A CN102069177B (en) | 2011-01-21 | 2011-01-21 | Vibrational casting experimental device |
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| CN201110024247A CN102069177B (en) | 2011-01-21 | 2011-01-21 | Vibrational casting experimental device |
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| CN102069177A true CN102069177A (en) | 2011-05-25 |
| CN102069177B CN102069177B (en) | 2012-10-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028718A (en) * | 2011-09-30 | 2013-04-10 | 广西玉柴机器股份有限公司 | Casting method of diesel engine air cylinder |
| CN103480828A (en) * | 2012-12-20 | 2014-01-01 | 江苏凯特汽车部件有限公司 | Method of applying electromagnetic vibration to casting of large-sized automobile aluminum alloy wheel |
| CN105081290A (en) * | 2015-08-27 | 2015-11-25 | 浙江万丰摩轮有限公司 | Aluminum alloy hub gravity vibration casting equipment and process thereof |
| CN105328169A (en) * | 2015-09-28 | 2016-02-17 | 扬中中科维康智能科技有限公司 | Six-axial multi-dimensional vibration casting platform |
| CN107901204A (en) * | 2017-11-23 | 2018-04-13 | 定远县双远新型建筑材料厂 | A kind of building block stripper apparatus |
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| CN101844207A (en) * | 2010-05-27 | 2010-09-29 | 南京化工职业技术学院 | Automatic steel ball casting forming machine |
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| CN2063865U (en) * | 1990-03-08 | 1990-10-17 | 唐山马家沟耐火材料厂 | Vibration shaper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028718A (en) * | 2011-09-30 | 2013-04-10 | 广西玉柴机器股份有限公司 | Casting method of diesel engine air cylinder |
| CN103480828A (en) * | 2012-12-20 | 2014-01-01 | 江苏凯特汽车部件有限公司 | Method of applying electromagnetic vibration to casting of large-sized automobile aluminum alloy wheel |
| CN103480828B (en) * | 2012-12-20 | 2016-12-07 | 江苏凯特汽车部件有限公司 | Electric and magnetic oscillation application process in large scale aluminum alloy wheel of vehicle casts |
| CN105081290A (en) * | 2015-08-27 | 2015-11-25 | 浙江万丰摩轮有限公司 | Aluminum alloy hub gravity vibration casting equipment and process thereof |
| CN105328169A (en) * | 2015-09-28 | 2016-02-17 | 扬中中科维康智能科技有限公司 | Six-axial multi-dimensional vibration casting platform |
| CN107901204A (en) * | 2017-11-23 | 2018-04-13 | 定远县双远新型建筑材料厂 | A kind of building block stripper apparatus |
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| CN102069177B (en) | 2012-10-03 |
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