CN205096486U - Titanium alloy casting is with graphite core and casting die utensil - Google Patents
Titanium alloy casting is with graphite core and casting die utensil Download PDFInfo
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- CN205096486U CN205096486U CN201520743787.0U CN201520743787U CN205096486U CN 205096486 U CN205096486 U CN 205096486U CN 201520743787 U CN201520743787 U CN 201520743787U CN 205096486 U CN205096486 U CN 205096486U
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Abstract
The utility model relates to a titanium alloy casting is with graphite core and casting die utensil belongs to titanium alloy casting technical field. The utility model discloses a titanium alloy casting has hollow inner chamber with the graphite core, the graphite core is for dividing the body structure. The utility model discloses a portion sets up the inner chamber at the graphite mould in -core to the casing thickness that sets up the graphite core is suitable thickness, and when guaranteeing the casting precision of titanium alloy casting, it can be crowded garrulous with the graphite core when the shrink to enable the titanium alloy casting again, makes the graphite core have good deformability, has avoided a titanium alloy casting internal surface to crack.
Description
Technical field
The utility model relates to a kind of titanium alloy casting graphite core and casting die, belongs to titanium alloy casting technique field.
Background technology
At present, Aeronautics and Astronautics manufactures the use of field to titanium alloy casting and gets more and more, also more and more higher to the surface quality requirements of titanium alloy casting.The shaping of titanium alloy casting adopt graphite jig precise forming more, for the titanium alloy casting of near closed hollow ring with smaller opening, the die cavity of cast-internal cannot all be exposed among the visual field, in the process detecting surface quality, its blemish cannot be detected, even if adopt special method can observe the defect on its surface, because die cavity opening is less, instrument cannot be deep into die cavity inside and repair its blemish.
For the defect of above-mentioned cast(ing) surface, the measure generally taked at present is the shaping of guarantee foundry goods, sacrifices the surface quality in blind area, does not namely process the blemish of die cavity inside.Along with the technical development in the fields such as Aeronautics and Astronautics, also more and more higher to the requirement of titanium alloy casting, even in the near closed hollow ring that opening is less, also require the casting flaws such as its surperficial flawless, traditional design is only considered its processability and is not considered that the mentality of designing of interior surface thereof quality can not be satisfied the demand.
In prior art, the blemish of die cavity inside be mostly due to foundry goods shrink in casting cycle time, because graphite core deformability difference causes.As shown in Figure 1-2, titanium alloy casting die of the prior art comprises external mold and is arranged on the graphite core 2 in external mold, external mold is generally made up of the first outer membrane module 1 and the second outer membrane module 3, defines the space for holding cast 4 between external mold and graphite core.Because this titanium alloy casting graphite core is integrated machine-shaping, when titanium alloy casting shrinks, graphite core deformability is poor, and cast(ing) surface is easy to produce stress and concentrates, and causes cracking.And this titanium alloy casting with the near closed hollow ring of smaller opening, after casting completes, the graphite core of die cavity inside is not easy to clear very much, adds difficulty of processing.
Utility model content
The purpose of this utility model is to provide a kind of titanium alloy casting graphite core, to solve the problem of titanium alloy casting graphite core deformability difference in prior art.The purpose of this utility model is also to provide a kind of casting die using above-mentioned graphite core.
In order to realize above object, the technical scheme of titanium alloy casting graphite core of the present utility model is as follows:
A kind of titanium alloy casting graphite core, described graphite core has the inner chamber of hollow, and described graphite core is Split type structure.
Described graphite core comprises core matrix and is fixedly installed on core lid on core matrix, and at least one in described core matrix and core lid is provided with groove, and described groove constitutes described inner chamber.
Described thickness of shell is 2-20mm.
Described housing is provided with and is used for the gas in inner chamber to lead to outside passage with described inner space.
The technical scheme of casting die of the present utility model is as follows:
A kind of casting die, comprise external mold and be arranged on the graphite core in external mold, described graphite core has the inner chamber of hollow, and described graphite core is Split type structure.
Described graphite core comprises core matrix and is fixedly installed on core lid on core matrix, and at least one in described core matrix and core lid is provided with groove, and described groove constitutes described inner chamber.
Described thickness of shell is 2-20mm.
Described housing is provided with and is used for the gas in inner chamber to lead to outside passage with described inner space.
The utility model is by arranging inner chamber in graphite core inside, define graphite core housing, while the casting precision ensureing titanium alloy cast, graphite core squeezes broken by the convergent force that titanium alloy cast can be enable again to produce when shrinking, make graphite core have good deformability, the inner surface avoiding titanium alloy cast cracks.And adopt Split type structure, be convenient to assembling and processing.And, graphite core squeezed broken after, be also convenient to clear from the die cavity of cast.Use the mould of titanium alloy casting graphite core of the present utility model compared with mould of the prior art, clear shell time decreased more than 50%, substantially increases production efficiency.
Further, graphite core housing is provided with passage, the high-temperature expansion gas produced can be discharged to mold exterior in time in casting cycle.
Accompanying drawing explanation
Fig. 1 is the structural representation of titanium alloy casting die of the prior art;
Fig. 2 is the profile of Fig. 1;
Fig. 3 is the profile of the structural representation of the embodiment of casting die of the present utility model.
Detailed description of the invention
The embodiment of casting die of the present utility model:
As shown in Figure 3, the casting die of the present embodiment comprises external mold and is arranged on the graphite core 2 in external mold, the space for holding cast is constituted between external mold and graphite core, titanium alloy cast of the present utility model is have near closed hollow ring and the less cast 4 of cavity hatch, cast in the present embodiment is made up of at the end cap at cylindrical shell two ends with being wholely set cylindrical shell, two end caps have respectively the through hole be communicated with cylindrical shell internal cavity, the internal diameter of this through hole is less than the internal diameter of cylindrical shell.End cap is made up of the circular end plate extended along cast radial direction and the cylindrical shape projection be arranged on towards circular cylindrical shell external body on circular end plate, the outer of circular end plate and the end of cylindrical shell are wholely set, along being wholely set with one end of cylindrical shape projection in it, the dead in line of cylindric protruding axis and cylindrical shell also extends along axis to circular cylindrical shell external body.The external mold of the titanium alloy casting die of the present embodiment is fixedly connected with by the outer membrane module 3 of the outer membrane module of cuboid first 1 and cuboid second and forms, a face of the outer membrane module of cuboid is provided with the semi-circular recesses mated with cast external surface shape, the notch of the semi-circular recesses of two outer membrane modules of cuboid relatively snaps together and constitutes described external mold, the two ends of outer membrane module are provided with semicircular indentations in the plane residing for semi-circular recesses opening, this semicircular indentations is coaxial with semi-circular recesses, after two outer membrane modules snap together, semicircular indentations defines the opening at external mold two ends.
Graphite core is the housing of the inner chamber with hollow, the outer surface of housing mates with the inner surface configuration of cast, in the present embodiment, graphite core housing is made up of core matrix 6 and the core lid 5 be fixedly installed on core matrix, core matrix is fixedly connected with by pin with core lid outer most edge contact position, core matrix has the circular groove of notch towards core lid towards one end of core lid, this circular groove constitutes described inner chamber, the bottom of circular groove is made up of annular plate, this annular plate has been wholely set cylindrical shape first section of ventilation away from the side of circular groove notch, cylindrical shape first section of ventilation is wholely set away from one end of core lid and has cylindrical shape second section of ventilation, first ventilation section is along the identical passage 7 of the internal diameter of Axis Extension with the second ventilation intersegmental part, an opening of this passage is arranged on the end face of the second passage away from one end of core lid, another opening is made up of the centre bore of annular plate, gas in the inner chamber that circular groove can form by passage is discharged to mold exterior.The outer wall of the first ventilation section coordinates with the madial wall of cast cavity hatch, the outer wall of the second ventilation section coordinates with the madial wall of the opening of external mold one end, the external diameter of the first ventilation section is greater than the external diameter of the second ventilation section, define along the radial step surface extended of core matrix in the first ventilation section and second section junction of ventilating like this, the cell wall of the semi-circular recesses of this step surface and external mold closely cooperates.
Core lid is made up of in the lid end of lid base plate away from core matrix side with being wholely set lid base plate, described lid base plate is circular, external diameter is identical with the maximum outside diameter of core matrix, the notch of the circular groove on core matrix can be closed, lid end is by the cylindric interlude be wholely set on lid base plate and be wholely set the cylindric lid projection on interlude, cylindric interlude is arranged with cylindric lid projection is coaxial, the outer surface of cylindric interlude coordinates with the madial wall of another opening of cast, the madial wall of the opening of the outer peripheral face of cylindrical bump and the other end of external mold closely cooperates, the external diameter of interlude is greater than the external diameter of lid projection, the step surface extended along graphite core housing radial direction is defined in the junction of interlude and lid projection, the cell wall of the semi-circular recesses of this step surface and external mold closely cooperates.
The thickness of shell of graphite core comprises the wall thickness of the core matrix of graphite core, the base plate thickness of core lid, the thickness of shell of graphite core is set to 5-20mm, when such thickness shrinks in cast casting cycle, can squeeze broken by the housing of graphite core, the cast inner surface avoiding the deformability of graphite core difference to cause cracks.Concrete, can arrange according to the thickness of the external diameter of cast and cast, in the present embodiment, the external diameter of cast is 400mm, and thickness is 10mm, and the thickness of shell of graphite core is set to 8mm.
The casting die of the present embodiment in use, first the core matrix of graphite core housing and core lid are fastened with pin is fixing, and then two outer membrane modules are buckled in the outside of graphite core, composition casting die also carries out the casting of titanium alloy cast, after having cast, graphite core housing crushes by convergent force when cast is shunk, avoid cast mold cavity surface to crack, and the graphite core housing fragment crushed also is convenient to clear from the die cavity of cast very much, by clear shell time decreased more than 50%, improve production efficiency.
In other embodiments of casting die of the present utility model, the core lid of graphite core housing is provided with the groove of notch towards core matrix, relatively with the groove notch on core matrix fastens the inner chamber forming graphite core.Also core matrix can be set to the cylinder of both ends open, and be fixedly installed core lid respectively at core matrix, to reduce the difficulty of processing of graphite core.
In other embodiments, the profile of graphite core housing is arranged according to the inner chamber concrete shape of cast, can be square tube shape structure.
In other embodiments, the core lid of graphite core housing is also provided with passage, to improve ventilation efficiency, avoids high-temperature gas agglomeration economies heat radiation in graphite core inner chamber.In other embodiments, core matrix and core lid all do not arrange passage.
In other embodiments, core matrix and core lid are fixed together by gluing.
The structure of the graphite core in the structure of the embodiment of titanium alloy casting graphite core of the present utility model and above-mentioned casting die embodiment is completely the same, and this is no longer going to repeat them.In addition, the various alternative forms of the graphite core in above-mentioned casting die embodiment are also all applicable to the embodiment of titanium alloy casting graphite core of the present utility model.
Claims (6)
1. a titanium alloy casting graphite core, is characterized in that, described graphite core has the inner chamber of hollow, and described graphite core is Split type structure;
Described graphite core is the housing of the inner chamber with hollow, the outer surface of housing mates with the inner surface configuration of cast, graphite core housing is made up of core matrix (6) and the core lid (5) be fixedly installed on core matrix, at least one in described core matrix and core lid is provided with groove, and described groove constitutes described inner chamber.
2. titanium alloy casting graphite core as claimed in claim 1, it is characterized in that, described thickness of shell is 2-20mm.
3. titanium alloy casting graphite core as claimed in claim 1, is characterized in that, described housing is provided with and is used for the gas in inner chamber to lead to outside passage (7) with described inner space.
4. a casting die, comprise external mold and be arranged on the graphite core (2) in external mold, it is characterized in that, described graphite core has the inner chamber of hollow, and described graphite core is Split type structure;
Described graphite core is the housing of the inner chamber with hollow, the outer surface of housing mates with the inner surface configuration of cast, graphite core housing is made up of core matrix (6) and the core lid (5) be fixedly installed on core matrix, at least one in described core matrix and core lid is provided with groove, and described groove constitutes described inner chamber.
5. casting die as claimed in claim 4, it is characterized in that, described thickness of shell is 2-20mm.
6. casting die as claimed in claim 4, is characterized in that, described housing is provided with and is used for the gas in inner chamber to lead to outside passage (7) with described inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743787.0U CN205096486U (en) | 2015-09-23 | 2015-09-23 | Titanium alloy casting is with graphite core and casting die utensil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520743787.0U CN205096486U (en) | 2015-09-23 | 2015-09-23 | Titanium alloy casting is with graphite core and casting die utensil |
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| CN205096486U true CN205096486U (en) | 2016-03-23 |
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| CN201520743787.0U Expired - Fee Related CN205096486U (en) | 2015-09-23 | 2015-09-23 | Titanium alloy casting is with graphite core and casting die utensil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195680A (en) * | 2015-09-23 | 2015-12-30 | 洛阳鹏起实业有限公司 | Graphite mold core for titanium alloy casting, casting mold and casting method |
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2015
- 2015-09-23 CN CN201520743787.0U patent/CN205096486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195680A (en) * | 2015-09-23 | 2015-12-30 | 洛阳鹏起实业有限公司 | Graphite mold core for titanium alloy casting, casting mold and casting method |
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| C14 | Grant of patent or utility model | ||
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| CP02 | Change in the address of a patent holder |
Address after: 471023 Henan Province, Luoyang city Luolong District Yuwen Kai Street No. 67 Patentee after: LUOYANG PENGQI INDUSTRIAL Co.,Ltd. Address before: Kaiyuan Avenue, Luolong District 471000 in Henan province Luoyang City, No. 248 Continental Mansion 818 Patentee before: LUOYANG PENGQI INDUSTRIAL Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20210923 |
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| CF01 | Termination of patent right due to non-payment of annual fee |