CN105583371B - A kind of mould of physical analogy aero-engine Middle casing part cast form process - Google Patents

A kind of mould of physical analogy aero-engine Middle casing part cast form process Download PDF

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Publication number
CN105583371B
CN105583371B CN201510988485.4A CN201510988485A CN105583371B CN 105583371 B CN105583371 B CN 105583371B CN 201510988485 A CN201510988485 A CN 201510988485A CN 105583371 B CN105583371 B CN 105583371B
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mold cavity
cavity configuration
mould
pin
aero
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CN105583371A (en
Inventor
周建新
王红红
南海
张晨
殷亚军
郭钊
樊晓薇
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • B22C9/04Use of lost patterns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082Sprues, pouring cups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00Centrifugal casting; Casting by using centrifugal force
    • B22D13/10Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101Moulds
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20Metals
    • G01N33/205Metals in liquid state, e.g. molten metals

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of mould of physical analogy aero-engine Middle casing part cast form process, it includes die unit, fixed cell and lighting unit, die unit is formed by stacking by multilayer mold cavity configuration, the internal cavity connection of every layer of mold cavity configuration, the shape of the cavity geometry that multilayer mold cavity configuration internal cavity is combined and aero-engine Middle casing part is adapted to;Provided with the center sprue being connected with bottom mold cavity configuration in the middle part of die unit;The bottom of bottom mold cavity configuration is provided with draining valve and support locating dowel;Fixed cell includes combination pin-and-hole and straight pin, and combination pin-and-hole is formed by stacking by coaxial pin-and-hole in each layer mold cavity configuration, and straight pin is through combination pin-and-hole;Lighting unit includes round tray and the electric supply installation installed in its bottom surface, and round tray is connected to the bottom of bottom mold cavity configuration, its multiple LED lamp bead of top surface uniform array.The physical analogy under a variety of forging types can be achieved in the present invention, has the advantages that to simulate accurate, strong applicability.

Description

A kind of mould of physical analogy aero-engine Middle casing part cast form process
Technical field
The invention belongs to cast form mould applications, more particularly, to a kind of physical analogy aero-engine intermediary machine The mould of casket part cast form process.
Background technology
Casing part is one of key components and parts of aero-engine, in recent years due to the startup of Chinese large-sized Aircraft Project, Requirement to aerial motor spare part in structure, material and manufacture view is also improved constantly, therefore, and casing part quality is also carried Higher requirement and challenge is gone out.Casing part is generally used for supporting engine frame, frequently with thin-walled, overall revolving structure, Inner circle and more complicated outer mold surface with the domain, traditional machining shaping technology are then difficult to the processing of outer mold surface, And when using multiaxis NC maching technology, costly, processing efficiency is low, and hold facility amount is big.
Good with overall structure due to titanium alloy fine casting structural member manufacturing technology, quality is high, low cost and other advantages, into In order to manufacture the preferred option of casing part.But due to the influence of the factors such as casing casting structure complex appearance, casting technique, it is particularly Metal fluid filling order will cause cast properties to occur gross differences in casing part mould, and performance is uneven.For research metal Flow of fluid filling sequentially, has to pass through physical analogy casing part casting and pouring process before cast on-site experiment, studies it Fill rule.Therefore, a kind of physical simulation experiment data that can be easy to accurate acquisition close to actual mould casting process are designed, The casing class wax-pattern that actual cast production can be met again fills the mould of rule, is essential.
At present, existing patent CN202024943U discloses liquid metal flows under a kind of physical analogy vertical centrifugal field of force Device, the device is applied under centrifugal force field and physical analogy liquid Metal Filling casting mold flows and passed through dendrite under gravitational field Feeding coagulation defect seepage flow flow process.However, the device is just for centrifugal casting, and it is unfavorable for obtaining for Germicidal efficacy and data Take.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of physical analogy cast form process Mould, wherein with reference to the design feature of aero-engine Middle casing part itself, respective design is applied to physical analogy boat The mould of empty engine Middle casing part cast form process, by three units such as die unit, fixed cell and illumination The research and design of unit concrete structure, obtain the mould for the casing class wax-pattern filling rule for both having met actual cast production, again The casting mould of the PHYSICAL MODELING OF IN requirement under a variety of forging types such as gravity-assist pouring, centrifugal casting can be easily realized, can be accurate The physical simulation experiment data close to actual mould casting process are really obtained, various actual production aviation casings can be widely used in In the mold design of part casting.
To achieve the above object, the present invention proposes a kind of physical analogy aero-engine Middle casing part cast form The mould of journey, it is characterised in that the mould includes die unit, fixed cell and lighting unit, wherein:
The die unit is from top to bottom sequentially overlapped by multilayer mold cavity configuration and formed, and the inside of every layer of mold cavity configuration Cavity is interconnected, the cavity geometry that multilayer mold cavity configuration internal cavity is combined and aero-engine intermediary machine to be simulated The shape of casket part is adapted;The middle part of the die unit is provided with the center sprue of insertion die unit, the center sprue It is connected with bottom mold cavity configuration;The bottom of the bottom mold cavity configuration is provided with draining valve and support locating dowel;Every layer of mould The pin-and-hole on multiple pin-and-holes for being distributed in mold cavity configuration outer annular edge, and every layer of mold cavity configuration correspondence position is provided with cavity configuration Coaxially;
The fixed cell includes combination pin-and-hole and straight pin, and the combination pin-and-hole is by the coaxial pins in each layer mold cavity configuration Hole stack combinations are formed, and the straight pin runs through the combination pin-and-hole multilayer mold cavity configuration is connected;
The lighting unit includes round tray and electric supply installation, and the round tray is connected by screw in bottom die cavity The bottom of structure, it is provided with the LED lamp bead of multiple uniform arrays, the power supply in one side towards the bottom mold cavity configuration Device is then arranged on the another side of the round tray.
It is further preferred that the multilayer mold cavity configuration is specially three layers, top layer mold cavity configuration, middle level die cavity knot are followed successively by Structure and bottom mold cavity configuration, it is processed by lucite.
It is further preferred that the straight pin is 4, the combination pin-and-hole is 4 groups;The straight pin is same with combining pin-and-hole Axle is installed, and its length is equal to the total depth of combination pin-and-hole.
It is further preferred that boss is fixed between the draining valve and bottom mold cavity configuration bottom, to increase mould The intensity of unit.
It is further preferred that the support locating dowel is four, the bottom of bottom mold cavity configuration is distributed in, its bottom is interior Embedding structure, is easy to fix with casting platform positioning.
It is further preferred that the lighting source vertical irradiation of the lighting unit is in bottom mold cavity configuration, and by bottom Mold cavity configuration extends to the inside of top layer mold cavity configuration, is advised in order to clearly observe fluid flow patterns in multilayer mold cavity configuration Rule.
It is further preferred that the LED lamp bead is arranged in the following way:Longitudinal direction and laterally equidistantly arrangement, uniform cloth Put on the round tray, and be centrosymmetric.
It is further preferred that the multilayer mold cavity configuration is interconnected by inner ring running channel, outer shroud running channel and cross gate.
It is further preferred that cast fluid in the mold by from bottom to up, be full of from outer shroud to inner ring in the way of enter Row filling.
In general, possess following compared with prior art, mainly by the contemplated above technical scheme of the present invention Technological merit:
1. the present invention realizes aero-engine Middle casing part by designing the die unit with layering mold cavity configuration The physical analogy of cast form process, each layer mold cavity configuration is not only separate but also cooperates, and every layer of mold cavity configuration is separately machined Shaping, by the mutual cooperation of each layer mold cavity configuration, can form the complicated internal cavity of various structures, it is adaptable to various actual raw In the mold design for producing the casting of aviation casing part, simulation meets the filling rule of actual true casting and pouring process, and mould is flexible Property strong, low cost;In combination with existing experimental method, by setting the LED lamp bead of uniform array in bottom mold cavity configuration bottom, The problem of existing high-speed photography Germicidal efficacy process light source is not enough and unstable is solved, is easy to the collection of Germicidal efficacy and data, There is important directive significance to mold design theoretical research and actual production.
2. the present invention sets inner ring running channel, outer shroud running channel and cross gate by increasing, it is applied to mould various complicated outer The cast form of the case structure of shape, and realize that the mode that cast fluid is full of from bottom to up, from outer shroud to inner ring is filled Fill out, the casting flaws such as misrun, cold shut can be prevented effectively from;It is real by the cooperation of coaxial pin-and-hole and straight pin in each layer mold cavity configuration The firm connection of existing multilayer mold cavity configuration;On the one hand the present invention realizes mould also by setting the support locating dowel with insert structure Die unit, is on the other hand fixed on casting platform, can realize that gravity is poured easily by the stable support of tool by insert structure PHYSICAL MODELING OF IN under a variety of forging types such as note, centrifugal casting.
Brief description of the drawings
Fig. 1 is the three dimensional structure diagram of physical analogy mould of the present invention;
Fig. 2 is the front view of physical analogy mould of the present invention;
Fig. 3 is the upward view of physical analogy mould of the present invention;
Fig. 4 is the top layer mold cavity configuration schematic diagram of physical analogy mould of the present invention;
Fig. 5 is the middle level mold cavity configuration schematic diagram of physical analogy mould of the present invention;
Fig. 6 is the longitudinal sectional view of physical analogy mould of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below Not constituting conflict each other can just be mutually combined.
As shown in figures 1 to 6, the mould of a kind of physical analogy aero-engine Middle casing part cast form process of the invention Tool, it is filled suitable for wax-pattern, mainly including die unit, fixed cell, three units of illumination.Wherein, die unit is used for Cast mold filling simulation is realized, fixed cell plays a part of to be fixedly connected layering mould, and lighting unit is easy to physical analogy observation real Test the collection with data.Die unit in the present invention is formed by stacking using layering die cavity, and the die cavity of die unit is not limited to A certain specific structure, can be achieved the physical analogy of any labyrinth form casing part casting.
Specifically three units in physical analogy mould of the present invention will be described in detail one by one below.
First module:Die unit is from top to bottom sequentially overlapped by multilayer mold cavity configuration and formed, and every layer of mold cavity configuration Internal cavity be allowed to interconnected by setting inner ring running channel 14, outer shroud running channel 15 and cross gate 16, wherein inner ring running channel 14, The specific size of outer shroud running channel 15 and cross gate 16, arrangement determine by the casing part of targeted labyrinth profile, from And cause the cavity geometry that multilayer mold cavity configuration internal cavity is combined and aero-engine Middle casing part to be simulated Shape is adapted;The middle part of die unit is provided with the center sprue 1 of insertion die unit, the center sprue 1 and bottom Mold cavity configuration is connected, and is cooperated with the inner ring running channel, outer shroud running channel and cross gate of other layers of mold cavity configuration, control cast Fluid-filled mode for from bottom to up, be full of from outer shroud to inner ring;The bottom of bottom mold cavity configuration is provided with draining valve 6 and support Locating dowel 7, the draining valve is used for physical analogy cast medium discharge, and the support locating dowel 7 plays a supportive role.
In one embodiment, multilayer mold cavity configuration is specially three layers, is followed successively by top layer mold cavity configuration 2, middle level die cavity knot Structure 3 and bottom mold cavity configuration 4, it is formed by lucite processing and fabricating, by setting inner ring running channel, outer shroud running channel and horizontal pouring Road so that the dimensional structure of three layers of mold cavity configuration interdepends, internal die cavity is interconnected.In the present invention, for this layering The die unit of manufacture is not limited to the casing part of a certain specific structure, can by it is appropriately designed replacing top layer mold cavity configuration or in The layer mode such as mold cavity configuration or bottom mold cavity configuration, studies the casing part casting process rule of different labyrinths, therefore, this hair The mould of bright hierarchy is highly suitable for the casing part with labyrinth die cavity.
In one embodiment, boss 5 is fixed between draining valve 6 and bottom mold cavity configuration bottom, for increasing mould Has the intensity of unit.
In one embodiment, support locating dowel 7 is four, is distributed in the bottom of bottom die cavity, in addition, support locating dowel 7 bottom is insert structure, makes it easy to fix with casting platform positioning, so as to applied to gravity casting and pouring, centrifugal casting Make in a variety of forging types such as cast.
Second unit:Fixed cell includes combination pin-and-hole 13 and straight pin 12.First, open up many in every layer of mold cavity configuration It is individual to be distributed in the pin-and-hole of mold cavity configuration outer annular edge, and make the pin-and-hole on every layer of mold cavity configuration correspondence position coaxial, each layer die cavity knot Coaxial pin-and-hole superposition obtains combination pin-and-hole 13 on structure, and straight pin 12 runs through combination pin-and-hole 13 to be connected multilayer mold cavity configuration It is fixed.
In one embodiment, straight pin 12 is 4, and combination pin-and-hole 13 is 4 groups, and multilayer mold cavity configuration is three layers, then appoints One group of combination pin-and-hole 13 of anticipating is formed by stacking by the coaxial pin-and-hole in top layer die cavity 2, middle level die cavity 3 and bottom die cavity 4,4 groups of combinations Pin-and-hole 13 is distributed in die unit outer annular edge, and straight pin 12 is corresponding with pin-and-hole 13 to be co-axially mounted, any one group of total depth of pin-and-hole 13 Equal to the length of a straight pin 12, and using interference fit, wherein straight pin plays positioning fixation.
Unit the 3rd:Lighting unit includes round tray 11 and electric supply installation 9, and round tray 11 is connected to by screw 8 The bottom of bottom mold cavity configuration, its be provided with one side (i.e. the top surface of round tray 11) towards bottom mold cavity configuration it is multiple The LED lamp bead 10 of even array, such as LED lamp bead is evenly arranged on round tray, and be in longitudinal direction and laterally equidistantly arrangement Central Symmetry, so that the distribution of light sources of lamp bead is soft, stably, is easy to fluid cavity filling process data acquisition;Power supply dress 9 another sides (i.e. the bottom surface of round tray 11) for being arranged on round tray 11 are put, it powers for LED lamp bead 10.
Specifically, the direction of illumination of lighting unit be vertical irradiation in bottom mold cavity configuration, lighting source is by bottom mould Cavity configuration is extended to inside top layer mold cavity configuration, in order to which the form for clearly observing flow of fluid in multilayer mold cavity configuration is advised Rule.
It is briefly described as follows and how casing part cast form process is simulated using the mould of the present invention.
First, necessary preparation is carried out before physical analogy, before a certain class aviation casing part cast form, analysis Its basic structure, is roughly divided into sandwich construction, since bottom mold cavity configuration, successively processing and fabricating cavity body of mould structure, meanwhile, Do not influence or the actual cast cavity filling process of smaller influence under the premise of, with the use of inner ring running channel, outer shroud running channel and cross gate etc. The cavity body structure for not connecting in the middle of improving or hindering fluid to fill type order, optimizes manufacturing procedure;Secondly, for convenience of operation and support In actual casting platform, mould positioning fixed cell with matching is made;Again, it is considered to which actual multiple physical simulation is needed Will, necessary annex, such as boss, draining valve are installed;Finally, for ease of data acquisition, lighting unit is installed.
Then, the support locating dowel of inventive die and existing gravitational casting or centrifugal casting casting platform are coordinated and pacified Dress is fixed;Before type is filled in cast, close draining valve, open lighting unit, arrangement high-speed motion picture camera shooting angle direction (level or Vertically), high-speed motion picture camera focal length is mixed up, data acquisition preparation etc. is carried out;Finally, control cast is carried out, and cavity filling process is carried out Record is shot, data are preserved in real time, are analyzed using data, the form of casing part cast form process medium fluid flowing is obtained Rule.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to The limitation present invention, any modification, equivalent and the improvement made within the spirit and principles of the invention etc., it all should include Within protection scope of the present invention.

Claims (9)

1. a kind of mould of physical analogy aero-engine Middle casing part cast form process, it is characterised in that the mould bag Die unit, fixed cell and lighting unit are included, wherein:
The die unit is from top to bottom sequentially overlapped by multilayer mold cavity configuration and formed, and the internal cavity of every layer of mold cavity configuration It is interconnected, the cavity geometry that multilayer mold cavity configuration internal cavity is combined and aero-engine Middle casing part to be simulated Shape be adapted;The middle part of the die unit is provided with the center sprue (1) of insertion die unit, the center sprue (1) it is connected with bottom mold cavity configuration;The bottom of the bottom mold cavity configuration is provided with draining valve (6) and support locating dowel (7);Institute State and multiple pin-and-holes for being distributed in mold cavity configuration outer annular edge are provided with every layer of mold cavity configuration, and every layer of mold cavity configuration correspondence position On pin-and-hole it is coaxial;
The fixed cell includes combination pin-and-hole (13) and straight pin (12), and the combination pin-and-hole (13) is by each layer mold cavity configuration Coaxial pin-and-hole stack combinations form, the straight pin (12) is through the combination pin-and-hole (13) with by the multilayer mold cavity configuration It is connected;
The lighting unit includes round tray (11) and electric supply installation (9), and the round tray (11) is connected by screw (8) In the bottom of bottom mold cavity configuration, it is provided with the LED of multiple uniform arrays in one side towards the bottom mold cavity configuration Pearl (10), the electric supply installation (9) is then arranged on the another side of the round tray (11).
2. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 1, its feature It is that the multilayer mold cavity configuration is specially three layers, is followed successively by top layer mold cavity configuration (2), middle level mold cavity configuration (3) and bottom mould Cavity configuration (4), it is processed by lucite.
3. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 2, its feature It is that the straight pin (12) is 4, the combination pin-and-hole (13) is 4 groups;The straight pin (12) is same with combining pin-and-hole (13) Axle is installed, and its length is equal to the total depth of combination pin-and-hole (13).
4. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 3, its feature It is boss (5) to be fixed between the draining valve (6) and bottom mold cavity configuration bottom, to increase the intensity of die unit.
5. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 4, its feature Be, it is described support locating dowel (7) be four, be distributed in the bottom of bottom mold cavity configuration, its bottom be insert structure, be easy to Platform positioning is cast to fix.
6. the mould of the physical analogy aero-engine Middle casing part cast form process as described in claim 4 or 5, it is special Levy and be, the lighting source vertical irradiation of the lighting unit is extended in bottom mold cavity configuration, and by bottom mold cavity configuration The inside of top layer mold cavity configuration, in order to clearly observe fluid flow patterns rule in multilayer mold cavity configuration.
7. the mould of the physical analogy aero-engine Middle casing part cast form process as described in claim 4 or 5, it is special Levy and be, the LED lamp bead (10) is arranged in the following way:Longitudinal direction and laterally equidistantly arrangement, are evenly arranged in the circle On shape pallet (11), and it is centrosymmetric.
8. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 7, its feature It is that the multilayer mold cavity configuration is interconnected by inner ring running channel (14), outer shroud running channel (15) and cross gate (16).
9. the mould of physical analogy aero-engine Middle casing part cast form process as claimed in claim 8, its feature Be, cast fluid in the mold by from bottom to up, be full of from outer shroud to inner ring in the way of filled.
CN201510988485.4A 2015-12-24 2015-12-24 A kind of mould of physical analogy aero-engine Middle casing part cast form process Active CN105583371B (en)

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CN108106770B (en) * 2017-11-10 2019-05-03 华中科技大学 It is a kind of to fill type Fluid pressure on-line measurement system for centrifugal casting physical analogy
CN108145117B (en) * 2018-01-31 2019-09-27 华中科技大学 A kind of polymorphic type running channel Collapsible mould for vertical centrifugal casting physical analogy
CN108237204B (en) * 2018-03-07 2023-06-20 衢州学院 Aluminum alloy front end frame pouring system and manufacturing method
CN108765578B (en) * 2018-05-15 2021-02-12 华中科技大学 Three-dimensional shooting system and method for filling fluid morphology of centrifugal casting physical simulation
CN113858608A (en) * 2021-09-26 2021-12-31 清华大学 Casting simulation method and casting simulation system
CN114029449B (en) * 2021-10-15 2024-04-16 宜昌船舶柴油机有限公司 Casting method of heavy gas turbine diffusion casing casting

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