CN205834120U - A kind of running gate system device of Sand-Faced Metal Mould Casting brake drum - Google Patents
A kind of running gate system device of Sand-Faced Metal Mould Casting brake drum Download PDFInfo
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- CN205834120U CN205834120U CN201620332879.4U CN201620332879U CN205834120U CN 205834120 U CN205834120 U CN 205834120U CN 201620332879 U CN201620332879 U CN 201620332879U CN 205834120 U CN205834120 U CN 205834120U
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- brake drum
- sand
- gate system
- running gate
- metal mould
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Abstract
This utility model relates to the running gate system device of a kind of Sand-Faced Metal Mould Casting brake drum, and it belongs to mechanical field.Running gate system device in this utility model, including satrain relief, exhaustion spill groove and the sprue being coupled to each other and ingate, satrain relief is arranged on one end of brake drum foundry goods upper end inner circle, and exhaustion spill groove is arranged on the side of satrain relief.This utility model is rational in infrastructure, and aerofluxus and cleaning are convenient, low cost, and cast is convenient, and the casting quality obtained is high.
Description
Technical field
This utility model relates to a kind of running gate system device, especially relates to the cast of a kind of Sand-Faced Metal Mould Casting brake drum
System and device, it belongs to mechanical field.
Background technology
Sand-Faced Metal Mould Casting belongs to one of Special Processes of Metal Castings, and its casting mold is to be covered with a thin layer precoated sand on metal mold inner chamber to be formed
Casting mold.Sand-Faced Metal Mould Casting produces brake drum, is a kind of energy-conservation, mode of production of material-saving, by many brake drum castings production
Enterprise is used.
The construction features of brake drum foundry goods, Sand-Faced Metal Mould Casting brake drum typically uses one one to water, top pouring type cast side
Formula, as shown in Figure 1, uses cross running gate system 1-1, and ingate is cross ingate 2-2, obtains brake drum part 3-3,
That is: gate location is in the top of brake drum part 3-3, and general ingate is thin cast gate in cross, and molten iron is from cast top inner circle
Place flows into, and from bottom to top, is progressively full of by whole casting mold；The mode of this Sand-Faced Metal Mould Casting brake drum running gate system produces braking
Drum, molten iron utilization rate is high, but has many problems, mainly have following some: 1) foundry goods upper surface easily produces dreg defect；
2) in casting process, in casting mold produce gas be not easy discharge, be finally collected at top, easily cause pore, shrinkage porosite lack
Fall into；3) foundry goods inner circle and cross ingate are connected to form cross hang, relatively difficult when knocking out ingate, it is easy to knock out
Foundry goods is caused to be connected position misrun during cast gate.Therefore, the running gate system form of this Iron Mould Coated Sand brake drum casting is in actual production
During, percent defective occupies considerable proportion always, becomes the main cause that such product cost is higher.
Publication date is December in 2014 17, in the Chinese patent of Publication No. 204018646U, discloses a kind of title
Utility model patent for " a kind of vermicular cast iron brake drum running gate system ".This patent includes longitudinally disposed sprue, directly waters
Lower end, road is respectively arranged on the left side and the right side left bend pipe, right straight tube, and left bend pipe, right straight tube are provided with filter screen near sprue junction, left
Bend pipe, right straight tube end are communicated with cross gate, and cross gate is that multiple tracks semi-annular slot spaced apart and mutual UNICOM is constituted, horizontal
Running channel is linked with the ingate that multiple tracks is spaced apart, and ingate pushes down the edge of vermicular cast iron brake drum.Although this patent can be given birth to
Producing foundry goods, but can there is shrinkage cavity and porosity in various degree, foundry goods also can be defective, cleaning inconvenience, therefore it still exists above-mentioned
Defect.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency present in prior art, and provides a kind of structure design to close
Reason, aerofluxus and cleaning are convenient, and casting quality is high, low cost, pour into a mould the running gate system dress of convenient Sand-Faced Metal Mould Casting brake drum
Put.
The technical scheme in the invention for solving the above technical problem is: watering of this kind of Sand-Faced Metal Mould Casting brake drum
Injection system device, including interconnective sprue and ingate, its feature of being arranged on inner circle one end, brake drum foundry goods upper end
Being: also include satrain relief and exhaustion spill groove, described satrain relief is arranged on one end of brake drum foundry goods upper end inner circle, row
Gas overflow launder is arranged on the side of satrain relief；Reasonable in design, satrain relief holds concurrently liquid feeding head for overflow of giving vent to anger,
Exhaustion spill groove is easy to aerofluxus, and the gas that in casting process, casting mold produces will not form pressure in casting mold, to molten iron casting and
In casting mold, the liquid feeding of molten iron adversely affects, the final measured foundry goods of matter that obtains, and total aerofluxus and cleaning are convenient,
Low cost, cast is convenient.
As preferably, this utility model also includes that drainage screen, described drainage screen are arranged on the lower section of sprue；Can be to pouring into
The molten iron of sprue carries out the filtration of slag.
As preferably, this utility model also includes that wedge mouth, described wedge mouth are separately positioned on ingate, satrain relief overflow limit
Close to brake drum foundry goods inner circle；So that after casting solidification has cooled down, conveniently by tapping sprue and satrain relief
Running gate system is removed from foundry goods.
As preferably, the height of ingate described in the utility model is 3-5mm, and width is 80mm.
As preferably, a diameter of 50mm of satrain relief described in the utility model, connect with brake drum foundry goods inner circle overflows
The height in stream cross section, limit is 3-5mm, and width is 100-150mm.
This utility model compared with prior art, has the following advantages and effect: 1, use improved brake drum to pour into a mould system
System, in casting process, the gas of casting mold die cavity and generation is discharged more smoothly, and type is filled in the beneficially cast of molten iron；2, use
Improved brake drum running gate system, in casting mold precoated sand be heated get angry formed gas discharging directly into atmosphere, casting mold internal gas pressure is low, molten iron
The hydrostatic head of cavity filling process and process of setting is big, and casting mold is begun to speak the feeding effect of molten iron by beneficially running gate system, is conducive to casting
In dense structure in part；3, using improved brake drum running gate system, in casting process, the scum silica frost in molten iron and floating sand are easy to
From the casting mold inner chamber upper surface of last castable, flow out foundry goods body die cavity by overflow ducts, do not have at brake drum upper surface
There is dreg defect, the allowance of brake drum upper surface can be greatly reduced；4, use improved brake drum running gate system, because of in water
Road, overflow ducts are not attached to mutually, there is not mutually support, and compared with running gate system cross with former brake drum, cleaning is removed the most square
Just.
Accompanying drawing explanation
Fig. 1 is existing employing cross brake drum injection system structure schematic diagram one.
Fig. 2 is existing employing cross brake drum injection system structure schematic diagram two.
Fig. 3 is the structural representation one of the running gate system device of the present embodiment modified model Sand-Faced Metal Mould Casting brake drum.
Fig. 4 is the structural representation two of the running gate system device of the present embodiment modified model Sand-Faced Metal Mould Casting brake drum.
Fig. 5 is the running gate system casting process status architecture schematic diagram of the present embodiment modified model Sand-Faced Metal Mould Casting brake drum
One.
Fig. 6 is the running gate system casting process status architecture schematic diagram of the present embodiment modified model Sand-Faced Metal Mould Casting brake drum
Two.
Fig. 7 is the running gate system casting process status architecture schematic diagram of the present embodiment modified model Sand-Faced Metal Mould Casting brake drum
Three.
In figure: brake drum foundry goods 1, sprue 2, ingate 3, satrain relief 4, exhaustion spill groove 5, drainage screen 6, molten iron 7,
Molten iron level 8 in type, scum silica frost molten iron level 9, the height H of ingate 3, the width M of satrain relief 4, cross running gate system 1-
1, cross ingate 2-2, brake drum part 3-3.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are right
Explanation of the present utility model and this utility model is not limited to following example.
Embodiment.
See Fig. 3 to Fig. 7, the sprue 2 in the running gate system device of this Sand-Faced Metal Mould Casting brake drum and ingate 3 phase
The satrain relief 4 that connects is arranged on one end of brake drum foundry goods 1 upper end inner circle, and exhaustion spill groove 5 is arranged on the one of satrain relief 4
Side.
Drainage screen 6 in the present embodiment is arranged on the lower section of sprue 2, and wedge mouth is separately positioned on ingate 3 close to braking
Founding part 1 inner circle and satrain relief 4 overflow limit are close to brake drum foundry goods 1 inner circle.
The height H of the ingate 3 in the present embodiment is 3-5mm, and width is 80mm, a diameter of 50mm of satrain relief 4,
The height in the cross section, overflow limit connected with brake drum foundry goods 1 inner circle is 3-5mm, and the width M of satrain relief 4 is 100-150mm.
In the present embodiment, the casting process of Sand-Faced Metal Mould Casting brake drum is as follows:
(1) molten iron 7 fills type device entrance Iron Mould Coated Sand casting mold by top pouring type cast, and cast fills the molten iron 7 of type along casting
Type wall is to bottom casting mold, and along with the continuous injection of molten iron 7, in type, molten iron level 8 constantly rises, eventually by complete for whole casting mold
It is full of.
(2) when molten iron 7 cast is full of casting mold upper surface, along with the continuation of molten iron 7 is injected, in casting mold upper surface molten iron 7
Scum silica frost can enter this satrain relief 4 along with the lasting injection of molten iron 7, continue to float up to rising head top.
(3) cast terminate after, down gate and satrain relief 4 can carry out liquid feeding to the molten iron 7 in casting mold, until in water
Mouth and the solidification of satrain relief 4 neck are closed, and final acquisition does not has the brake drum foundry goods 1 of pore, slag inclusion, shrinkage cavity and porosity defect.
The operation principle of the present embodiment: phenolic resin covers and can produce substantial amounts of gas after layer of sand is heated, and this part is at casting mold
The gas of middle formation must discharge casting mold in casting process, otherwise will result in the casting flaw such as pore, shrinkage cavity and porosity.
The discharge of the gas produced in casting mold in Sand-Faced Metal Mould Casting casting process mainly uses die joint aerofluxus and penetrates sand
Hole aerofluxus.In existing brake drum Sand-Faced Metal Mould Casting production technology, the general mode using cross running gate system teeming, this
The die joint of kind of brake drum pouring type casting mold is in the bottom of casting mold, so in casting process, when molten iron 7 fills type first
Being full of by casting mold die joint, then molten iron 7 continues up to fill type, so aerofluxus of casting mold die joint in casting process subsequently
Effect reduces the most significantly, and in cast subsequently, the discharge of casting mold can only rely on the mode of sand-spraying hole aerofluxus, or uses it
It places the mode of venting plug.Placing venting plug in swage is not a kind of good selection, on the one hand can increase the making of swage
Cost, also can increase many troubles in foundry production simultaneously, and such as venting plug often blocks, and needs cleaning in time,
Venting plug is when vibrating duty simultaneously, easily falls down disengaging swage.When using cross apparatus for pouring cast brake drum simultaneously,
Molten iron 7 fill type to lower and on, molten iron 7 is brought in casting process scum silica frost or the secondary slag that produces in casting process along with
Molten iron 7 cast is filled type and finally can be rested on the face, the top of casting mold, and i.e. the upper surface of foundry goods, causes dreg defect.
Cover the factors such as sand molding convenience and molten iron 7 recovery rate in view of brake drum Sand-Faced Metal Mould Casting, pouring technology is still
So using the mode of teeming, casting mold die joint is as the most cross running gate system, in the bottom of casting mold, sees Fig. 3 extremely
Fig. 4.
The whole casting process of brake drum, see Fig. 5 to Fig. 7: running gate system arranges employing in brake drum upper end inner circle
One end pour into molten iron 7, the other end in this inner circle arranges an overflow of giving vent to anger and holds concurrently the satrain relief 4 of liquid feeding head.
In molten iron 7 casting process, when casting mold die joint is once full of, the gas produced in casting mold can be by this overflow
Riser runner is discharged directly in air, and gas will not form pressure in casting mold, it is to avoid pours into a mould molten iron 7 and molten iron in casting mold
The liquid feeding of 7 adversely affects.
When molten iron 7 cast is full of casting mold upper surface, along with the continuation of molten iron 7 is injected, floating in casting mold upper surface molten iron 7
Slag can enter this satrain relief 4 along with the lasting injection of molten iron 7, continues to float up to rising head top.After cast terminates, down gate,
Satrain relief 4 can carry out liquid feeding to the molten iron 7 in casting mold, until the solidification of ingate, satrain relief 4 neck is closed, finally obtains
Must there is no the brake drum foundry goods 1 of pore, slag inclusion, shrinkage cavity and porosity defect.
The present embodiment is mainly cross by an original top pouring type for the running gate system of Sand-Faced Metal Mould Casting brake drum
Form cast is filled type device and is changed into exhaustion spill groove 5 and the overflow being filled type device and a side overhead by a top pouring type cast
Rising head 4 forms.
In brake drum casting process, molten iron 7 fills type device by top pouring type cast and enters Iron Mould Coated Sand casting mold, and cast is filled
The molten iron 7 of type is bottom mould wall to casting mold, and along with the continuous injection of molten iron 7, in type, molten iron level 8 constantly rises, finally
Whole casting mold is completely filled with.
The gas produced because casting mold is heated in molten iron 7 casting process can be by the overflowing of inner circle opposite side overhead on casting mold
Stream rising head 4 is discharged in air, and so in casting process, the gas pressure within casting mold is the highest, to pouring molten iron 7 not
Produce pressure, therefore the static pressure of molten iron in casting process 7 is not the most affected.In casting process,
Seeing Fig. 7, scum silica frost molten iron level 9, as it can be seen, scum silica frost in molten iron 7 typically swims in the top of molten iron 7, works as ferrum
When water 7 waters to swage casting mold inner chamber top, along with the continuation of molten iron 7 is injected, the molten iron 7 that this part contains scum silica frost will be by holding
Afterflow enters the satrain relief 4 of inner circle opposite side overhead on casting mold and continues to float at aerofluxus, satrain relief 4, is finally having foundry goods
Molten iron 7 scum silica frost in casting mold die cavity all enters satrain relief 4, thus after ensureing casting solidification cooling, foundry goods top does not has slag inclusion to lack
Fall into.
The present embodiment can dispose drainage screen 62 times at sprue, and the molten iron 7 pouring into sprue 2 can carry out the mistake of slag
Filter；The height H of ingate 3 is 3-5mm, and width is 80mm；A diameter of 50mm of satrain relief 4, connect with foundry goods inner circle overflows
The height in stream cross section, limit is 3-5mm, and the width M of satrain relief 4 is 100-150mm；Sprue 2 and exhaustion spill rising head 4 exist
After molten iron 7 casting complete, moreover it is possible to the molten iron 7 of casting mold is carried out liquid feeding, it is ensured that the cast-internal that final set has cooled down
There is no shrinkage cavity and porosity defect.
Wedge mouth is made close to foundry goods inner circle, in order to casting solidification is cold on ingate 3, satrain relief 4 overflow stream limit etc.
But after completing, it is convenient to by tapping sprue 2 and satrain relief 4, running gate system is removed from foundry goods.
After using the improved brake drum running gate system of the present embodiment, ingate 3, overflow ducts are completely self-contained list
Body, is not attached to the most mutually, there is not mutually support, and in running gate system cross with former brake drum, cross ingate is mutual
For being connected to become an entirety, therefore remove running gate system of the present utility model in percussion and to save than removing cross running gate system
Power much, is less likely to cause simultaneously and taps the generation that round belt meat in foundry goods body damages when removing running gate system phenomenon.
By above-mentioned elaboration, those skilled in the art can implement.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Titles etc. can be different, and the above content described in this specification is only to this utility model structure example explanation.
All equivalence changes done according to structure, feature and the principle described in this utility model inventional idea or simple change, all wrap
Include in the protection domain of this utility model patent.This utility model person of ordinary skill in the field can be to described
Specific embodiment makes various amendment or supplements or use similar mode to substitute, without departing from knot of the present utility model
Structure or surmount scope defined in the claims, all should belong to protection domain of the present utility model.
Claims (5)
1. a running gate system device for Sand-Faced Metal Mould Casting brake drum, including interconnective sprue and ingate, it is special
Levying and be: also include satrain relief and exhaustion spill groove, described satrain relief is arranged on one end of brake drum foundry goods upper end inner circle,
Exhaustion spill groove is arranged on the side of satrain relief.
The running gate system device of Sand-Faced Metal Mould Casting brake drum the most according to claim 1, it is characterised in that: also included
Filter screen, described drainage screen is arranged on the lower section of sprue.
The running gate system device of Sand-Faced Metal Mould Casting brake drum the most according to claim 1, it is characterised in that: also include wedge
Mouthful, described wedge mouth is separately positioned on ingate close to the close braking founding of brake drum foundry goods inner circle and satrain relief overflow limit
Part inner circle.
The running gate system device of Sand-Faced Metal Mould Casting brake drum the most according to claim 1, it is characterised in that: water in described
The height in road is 3-5mm, and width is 80mm.
The running gate system device of Sand-Faced Metal Mould Casting brake drum the most according to claim 1, it is characterised in that: described overflow
A diameter of 50mm of rising head, the height in the cross section, overflow limit connected with brake drum foundry goods inner circle is 3-5mm, and width is 100-
150mm。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332879.4U CN205834120U (en) | 2016-04-20 | 2016-04-20 | A kind of running gate system device of Sand-Faced Metal Mould Casting brake drum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332879.4U CN205834120U (en) | 2016-04-20 | 2016-04-20 | A kind of running gate system device of Sand-Faced Metal Mould Casting brake drum |
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| CN205834120U true CN205834120U (en) | 2016-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750502A (en) * | 2016-04-20 | 2016-07-13 | 浙江省机电设计研究院有限公司 | Pouring system device and pouring method for iron based sand coated cast brake drums |
| CN111014581A (en) * | 2019-12-31 | 2020-04-17 | 安徽应流航源动力科技有限公司 | Investment precision casting turbine mold and turbine preparation method |
-
2016
- 2016-04-20 CN CN201620332879.4U patent/CN205834120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750502A (en) * | 2016-04-20 | 2016-07-13 | 浙江省机电设计研究院有限公司 | Pouring system device and pouring method for iron based sand coated cast brake drums |
| CN111014581A (en) * | 2019-12-31 | 2020-04-17 | 安徽应流航源动力科技有限公司 | Investment precision casting turbine mold and turbine preparation method |
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