CN205702388U - A kind of low-pressure casting die of aluminium alloy wheel - Google Patents
A kind of low-pressure casting die of aluminium alloy wheel Download PDFInfo
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- CN205702388U CN205702388U CN201620570290.8U CN201620570290U CN205702388U CN 205702388 U CN205702388 U CN 205702388U CN 201620570290 U CN201620570290 U CN 201620570290U CN 205702388 U CN205702388 U CN 205702388U
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Abstract
This utility model provides a kind of low-pressure casting die of aluminium alloy wheel, described low-pressure casting die of aluminium alloy wheel is made up of upper mold, Bian Mo and lower mold, described upper mold, Bian Mo and lower mold forms the die cavity of wheel cast after being set to Guan Bi, described lower mold includes water-cooled insert (2) in bottom, described water-cooled insert (2) has 3, and is arranged in the middle part of center riser, spoke by bolt respectively and end thermal center position；Described water-cooled insert (2) is installed to the bottom of bed die by the bolted mode of bilateral.Mould structure of the present utility model is simple, strengthens the cooling capacity of mould, the temperature of bed die can be made to significantly reduce, improve the forming quality of front face of wheel；It addition, bed die can obtain more reasonably temperature gradient distribution, foundry goods each position freezing rate more equalizes, and reduces the probability that wheel fault occurs, significantly improves casting quality and yield rate, it is achieved that the fine metaplasia of wheel is produced.
Description
Technical field
This utility model relates to technical field of automobile parts, relates in particular to one and is intended to improve aluminum-alloy wheel
The low pressure casting die of form quality amount.
Background technology
Aluminum-alloy wheel is as one of the main external appearance parts of automobile, in the fashion-orientation of vehicle, beautifulization, personalization side
Face plays very important effect, and the most each main engine plants all propose extremely strict requirements to the front quality of wheel.Mesh
Before, the aluminum-alloy wheel of about 80% uses low pressure casting production technology, and the most most of manufacturing firm uses tradition
Air-cooled forming technique, a large amount of knowhows show: the air-cooled cooling capacity of prior art is more weak, and cooling coverage is narrower, right
For the wheel that some spokes are the generousest, air cooled medium can not take away substantial amounts of heat at short notice, therefore makes
Becoming the solidification of aluminum liquid slowly, process cycle lengthens, and production efficiency is low；A little cold category is belonged to, then will certainly be at mould it addition, air-cooled
The local low-temperature space forming local of tool upcast ventilation pipe blow-through, therefore the Temperature Distribution on mould top layer can't very uniform, also
The thermograde that ensure that the good feeding of aluminum liquid cannot be formed.In this case, the cooldown rate meeting of foundry goods different parts
There is notable difference, cooling is local faster, and internal grain is tiny, dense structure, and performance indications are the highest；Solidify at aluminum liquid on the contrary
Region slowly, then be easy to the casting flaws such as foundry goods white macula, segregation, burnishing surface pin hole, surface pyrocondensation occur, and these are the most serious
The presentation quality affecting wheel.
The above analysis, in actual production process, for the various wheel open defects that presently, there are, it is necessary to from
The angle of mould is optimized and improves, and enables mould to form good consecutive solidification thermograde, and equilibrium foundry goods is each simultaneously
The freezing rate at position, solves foundry goods white macula that front face of wheel easily occurs, segregation, burnishing surface pin hole, the casting such as surface pyrocondensation lack
Fall into, thus improve the yield rate of wheel, and the become more meticulous production of wheel hub is done step-by-step.
Utility model content
The purpose of this utility model is to provide the cooling structure of a kind of low pressure casting wheel bed die improved, and this structure is used
Water-cooled replaces original air-cooled form, by the heat storage capacity that cooling water is powerful, the most quickly siphons away most
Heat, by reducing the temperature of bed die, can be obviously improved front quality and the production efficiency of wheel；New bed die cooling is arranged
More reasonably thermograde can also be obtained, it is ensured that the good feeding of aluminum liquid, the freezing rate at the equilibrium each position of foundry goods, reduces
The probability that the defects such as front segregation, white macula, burnishing surface pin hole occur, thus casting quality and yield rate are substantially improved.
At an aspect of the present utility model, disclose a kind of low-pressure casting die of aluminium alloy wheel, described aluminium alloy
Wheel pressure casting mould is made up of upper mold, Bian Mo and lower mold, and described upper mold, Bian Mo and lower mold forms after being set to Guan Bi
The die cavity of wheel cast, it is characterised in that: described lower mold includes that in bottom water-cooled insert (2), described water-cooled insert (2) have
3, and it is arranged in the middle part of center riser, spoke by bolt respectively and end thermal center position；Described water-cooled insert (2)
The bottom of bed die it is installed to by the bolted mode of bilateral；Described water-cooled insert (2) is ring-type water-cooled insert, and sets
It is set to make cooling water ring flow around lower mold；Described water-cooled insert (2) includes at least 2 layers of cover plate, and described cover plate and water
Welding manner is taked to seal between circulation road；At the correspondence position of wheel hub window, described water-cooled insert (2) and bed die it
Between process centre circle insert heat dam (9) and root insert heat dam (10).
At the preferred aspect of this utility model, the described contact surface between water-cooled insert (2) and bed die carries out precision and adds
Work so that it is good contact.
At the preferred aspect of this utility model, the described contact surface Ra < 0.8 between water-cooled insert (2) and bed die.
At the preferred aspect of this utility model, the described contact surface between water-cooled insert (2) and bed die is at wheel hub window
Correspondence position include shallow slot, described shallow slot to be arranged so that between water-cooled insert (2) and bed die including empty avoiding.
At the preferred aspect of this utility model, described centre circle insert heat dam (9) and root insert heat dam (10)
The degree of depth is 0.8-1.5mm.
At the preferred aspect of this utility model, described centre circle insert heat dam (9) and root insert heat dam (10)
The degree of depth is 1mm.
At other aspects of the present utility model, additionally provide following technical scheme:
The technical solution of the utility model is: improve existing casting wheel die structure, cancels air-cooled pipeline
Arrange, process 3 ring-type inserts, and be separately mounted in the middle part of center riser, spoke by bolt and end thermal center position；Adopt
By bilateral bolt type of attachment, to guarantee that mould can be in close contact with insert to greatest extent；Processing annular in cooling insert
Water channel, and use at least 2 layers of cover plate to carry out welded seal, reduce the harmful effect of the butt welded seam that colds and heat succeed each other, reduce use process
The risk that middle seepy question occurs；When cooling down normally-open, aqueous medium is at water annulus internal circulation flow, excellent by self
Heat storage capacity constantly take away the heat that mould is absorbed, make whole system be in all the time one relatively stable, balance
Temperature distribution state；The contact surface of bed die and insert is required to Precision Machining as unique thermal conductive surface, it is desirable to surface Ra < 0.8,
With the heat-conducting effect that both guarantees are good；For avoiding the window position that mould need not cooling to have undesirable effect, at bed die
The deep shallow slot of at least 1mm is processed on the contact surface of corresponding the window's position, the effect heat insulation to play empty avoiding, thus realize cooling
Accuracy.Can effectively be solved some casting flaws often occurred in prior art by above-mentioned improvement, be obviously improved product
Quality and yield rate.
This utility model (utility model) simple in construction, by improving existing bottom mold cooling structure, adds
The strong cooling capacity of mould, can make the temperature of bed die significantly reduce, improve the forming quality of front face of wheel；It addition, the end
Mould can obtain more reasonably temperature gradient distribution, and foundry goods each position freezing rate more equalizes, and reduces front face of wheel inclined
The probability that the defects such as analysis, white macula, burnishing surface pin hole and surface pyrocondensation occur, significantly improves casting quality and finished product
Rate, it is achieved that the fine metaplasia of wheel is produced.
Accompanying drawing explanation
Hereinafter, embodiment of the present utility model is described in detail in conjunction with accompanying drawing, wherein:
Fig. 1 is that schematic diagram is arranged in the casting wheel bed die cooling of prior art mesolow；
Fig. 2 is the low pressure casting wheel bed die cooling structure schematic diagram improved in this utility model；
Fig. 3 is that in this utility model, water-cooled insert installs close-up schematic view with bed die；And
Fig. 4 is heat dam distribution schematic diagram in this utility model.
In figure: 1-bed die；2-water-cooled insert；Bolt inside 3-；4-welded cover plate a；5-welded cover plate b；Outside 6-
Side bolt；7-water channel；8-contact surface；9-centre circle insert heat dam；10-root insert heat dam.
Detailed description of the invention
Embodiment 1
Below in conjunction with each accompanying drawing of the present utility model, the technical solution of the utility model is described.
Figure one is that prior art mesolow casts wheel bed die cooling structure form；
Figure two, three, four discloses the low pressure casting wheel bed die cooling structure that this utility model (utility model) improves,
Cancelling conventional air holes methods for cooling, the back of the body intracavity at bed die (1) is installed and is cooled down insert (2) at 3；Cooling insert (2) and bed die
(1) connection installed by bolt (3) and outside bolt (6) in the inner part, it is ensured that the compactness of contact；Insert processes water annulus on (2)
(7)；For avoiding drainage to occur, use welded cover plate a (4) and welded cover plate b (5) to carry out dual-layer welding sealing, reduce cold
The adverse effect of heat alternately butt welded seam；Insert reaches more than Ra0.8 with contact surface (8) surface finish requirements of bed die, to ensure
Good heat-conducting effect；At the window position that need not cooling, bed die contact surface processes the deep avoiding hollow groove of at least 1mm: centre circle
Insert heat dam (9) and root insert heat dam (10), to isolate water channel with window position, it is achieved make more accurately
Cold.
In the research and development workshop of engineering and technological research institute of CITIC Dicastal Co., Ltd., above equipment is used to be given birth to
Produce test.According to above description, transform 3 air injection machines, be denoted as TEST-01, TEST-02, TEST-03.Also
Have chosen 2 air injection machines the most engineered as a comparison.With these five air injection machines pair.Test finds, after transformation
Low pressure casting and the probability of occurrence of the defect such as front face of wheel segregation, white macula, burnishing surface pin hole and surface pyrocondensation and Liang Tai
The most engineered air injection machine is compared, and averagely reduces 72.50%.
By above-mentioned improvement, strengthen the cooling capacity of mould, the temperature of bed die can be made to significantly reduce, improve wheel
The forming quality in front；It addition, bed die can obtain more reasonably temperature gradient distribution, foundry goods each position freezing rate is more
Equilibrium, reduces the probability that the defects such as front face of wheel segregation, white macula, burnishing surface pin hole and surface pyrocondensation occur, significantly
Improve casting quality and yield rate, it is achieved that the fine metaplasia of wheel is produced.
Claims (6)
1. a low-pressure casting die of aluminium alloy wheel, described low-pressure casting die of aluminium alloy wheel by upper mold, Bian Mo and under
Mould is formed, and described upper mold, Bian Mo and lower mold forms the die cavity of wheel cast after being set to Guan Bi, it is characterised in that: described
Lower mold include that in bottom water-cooled insert (2), described water-cooled insert (2) have 3, and be arranged on center by bolt respectively
In the middle part of rising head, spoke and end thermal center position；Described water-cooled insert (2) is installed to the end by the bolted mode of bilateral
The bottom of mould；Described water-cooled insert (2) is ring-type water-cooled insert, and is configured such that cooling water ring flows around lower mold；Described
Water-cooled insert (2) to include taking welding manner to carry out between at least 2 layers of cover plate, and described cover plate and water stream channel close
Envelope；Process between the correspondence position of wheel hub window, described water-cooled insert (2) and bed die centre circle insert heat dam (9) and
Root insert heat dam (10).
Low-pressure casting die of aluminium alloy wheel the most according to claim 1, it is characterised in that described water-cooled insert (2)
And the contact surface between bed die carries out Precision Machining so that it is good contact.
Low-pressure casting die of aluminium alloy wheel the most according to claim 2, it is characterised in that described water-cooled insert (2)
And the contact surface Ra < 0.8 between bed die.
Low-pressure casting die of aluminium alloy wheel the most according to claim 1, it is characterised in that described water-cooled insert (2)
And at the correspondence position of wheel hub window, the contact surface between bed die includes that shallow slot, described shallow slot are arranged so that water-cooled insert
And between bed die, include empty avoiding (2).
Low-pressure casting die of aluminium alloy wheel the most according to claim 1, it is characterised in that described centre circle insert is heat insulation
The degree of depth of groove (9) and root insert heat dam (10) is 0.8-1.5mm.
Low-pressure casting die of aluminium alloy wheel the most according to claim 5, it is characterised in that described centre circle insert is heat insulation
The degree of depth of groove (9) and root insert heat dam (10) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620570290.8U CN205702388U (en) | 2016-09-22 | 2016-09-22 | A kind of low-pressure casting die of aluminium alloy wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620570290.8U CN205702388U (en) | 2016-09-22 | 2016-09-22 | A kind of low-pressure casting die of aluminium alloy wheel |
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| Publication Number | Publication Date |
|---|---|
| CN205702388U true CN205702388U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620570290.8U Active CN205702388U (en) | 2016-09-22 | 2016-09-22 | A kind of low-pressure casting die of aluminium alloy wheel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077575A (en) * | 2016-09-22 | 2016-11-09 | 中信戴卡股份有限公司 | A kind of low-pressure casting die of aluminium alloy wheel |
| CN107199325A (en) * | 2017-06-12 | 2017-09-26 | 佛山市南海奔达模具有限公司 | Wheel hub casting mould with novel side mould structure |
| CN107876731A (en) * | 2017-11-30 | 2018-04-06 | 中信戴卡股份有限公司 | A kind of water cooling mold for cast aluminum alloy wheel |
| CN108817354A (en) * | 2018-09-04 | 2018-11-16 | 佛山市南海奔达模具有限公司 | A kind of mold, die assembly and cooling means |
-
2016
- 2016-09-22 CN CN201620570290.8U patent/CN205702388U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077575A (en) * | 2016-09-22 | 2016-11-09 | 中信戴卡股份有限公司 | A kind of low-pressure casting die of aluminium alloy wheel |
| CN107199325A (en) * | 2017-06-12 | 2017-09-26 | 佛山市南海奔达模具有限公司 | Wheel hub casting mould with novel side mould structure |
| CN107876731A (en) * | 2017-11-30 | 2018-04-06 | 中信戴卡股份有限公司 | A kind of water cooling mold for cast aluminum alloy wheel |
| EP3492194A1 (en) * | 2017-11-30 | 2019-06-05 | Citic Dicastal Co., Ltd. | Water-cooled mold for casting aluminum alloy wheel |
| CN107876731B (en) * | 2017-11-30 | 2024-01-30 | 中信戴卡股份有限公司 | Water cooling mold for casting aluminum alloy wheel |
| CN108817354A (en) * | 2018-09-04 | 2018-11-16 | 佛山市南海奔达模具有限公司 | A kind of mold, die assembly and cooling means |
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| GR01 | Patent grant |