CN204545324U - A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage - Google Patents
A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage Download PDFInfo
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- CN204545324U CN204545324U CN201520135676.1U CN201520135676U CN204545324U CN 204545324 U CN204545324 U CN 204545324U CN 201520135676 U CN201520135676 U CN 201520135676U CN 204545324 U CN204545324 U CN 204545324U
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- swage
- box
- brake drum
- precoated sand
- casting mold
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Abstract
The utility model discloses a kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage, it comprises cope swage and drag box swage, by the inner die cavity formed for casting brake drum of assembling between described cope swage and drag box swage, described cope swage is evenly provided with multiple steam vent be communicated with die cavity respectively with on the outer wall of drag box swage, is equipped with venting plug in each steam vent.The utility model by setting up venting plug at upper and lower sandbox swage, thus obtains densification and the upper and lower case casting mold close-over of consolidation, simultaneously true when protecting cast in casting mold close-over the resin a large amount of gases produced that burns can arrange outward in time.After using the upper and lower sandbox swage improved there is not the casting flaws such as fleshiness projection, burning into sand in foundry goods, and up-to-standard rate improves 6%-8%.
Description
Technical field
The utility model relates to casting technology field, is specifically related to a kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage.
Background technology
Sand-Faced Metal Mould Casting technique be adopt " metal pattern " and with the cast iron die cavity of the nearly shape of foundry goods profile as " sandbox swage ", the sandbox swage of nearly shape covers the thick precoated sand close-over of one deck 6-10mm and forms casting mold, for pouring into foundry goods.The irrational situation of design is there is in existing Iron Mould Coated Sand brake drum casting with " upper and lower sandbox swage ", do not fully take into account how Quick air-discharge (a large amount of gases that in air when penetrating sand in casting mold cavity and precoated sand, resin burning produces), the major defect that irrationality of its design is brought has:
1) " upper and lower metal pattern " and " upper and lower sandbox swage " assembles in core-shooting process because exhaust is not smooth, sand is penetrated by the counteractive obstruction that affects of air pressure, there is the phenomenon that density is poor, the degree of packing is poor in the close-over formed, especially near the close-over of root, its density and the degree of packing the poorest, and intensity is low.When high temperature liquid iron fills type, due to close-over density, the degree of packing, insufficient strength, there is cracking, come off, cause foundry goods to occur the casting flaws such as scab, shim, projection.
2) " upper and lower sandbox swage " is after the good precoated sand of Surface mulch forms casting mold close-over, through closing machine mould assembling, forms casting mold.Because molten iron adopts top pouring mode filling cast, resin in casting process in precoated sand burns at high operating temperatures and produces a large amount of gas, these gases can only from upper, (sand-spraying hole under this state film sand fills up for the gap of drag box swage assembling place (die joint) and the sand-spraying hole of cope swage, exhaust is obstructed) middle discharge, because monotype duration of pouring is 19-20 second, the a large amount of gases produced can not be arranged outward in time, concentrate on casting mold top, the instantaneous air pressure at casting mold top is caused to raise, under hyperbar and the scorching hot effect of high temperature, cause this local precoated sand close-over to occur cracking, obscission, thus cause foundry goods to occur scab, burning into sand, the casting flaws such as projection.
Summary of the invention
In order to solve deficiency of the prior art, the purpose of this utility model is to provide the brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage that a kind of structure is simple, significantly can promote casting product quality.
For achieving the above object, the utility model is by the following technical solutions:
A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage, it comprises cope swage and drag box swage, by the inner die cavity formed for casting brake drum of assembling between described cope swage and drag box swage, described cope swage is evenly provided with multiple steam vent be communicated with die cavity respectively with on the outer wall of drag box swage, is equipped with venting plug in each steam vent.
The diameter of the steam vent on described cope swage and drag box swage outer wall is 20mm.
Described venting plug and steam vent are matched in clearance.
The external cylindrical surface of described venting plug is provided with external screw thread, and venting plug is threaded with steam vent.
The utility model adopts above technical scheme, has following remarkable advantage:
1, cope swage and upper metal pattern assemble and form top box casting mold cavity, when penetrating sand, under the filling injecting the precoated sand in top box casting mold cavity fast, air in top box casting mold cavity is discharged fast from the venting plug cope swage, thus because the exhaust of the empty chamber air of top box casting mold is smooth, the filling of precoated sand is obstructed when avoiding penetrating sand, finally obtain top box casting mold close-over that is fine and close, consolidation.
2, drag box swage and lower metal pattern assemble and form nowel casting mold cavity, when penetrating sand, under the filling injecting the precoated sand in nowel casting mold cavity fast, air in nowel casting mold cavity is discharged fast from the venting plug drag box swage, thus because the exhaust of the empty chamber air of nowel casting mold is smooth, the filling of precoated sand is obstructed when avoiding penetrating sand, finally obtain nowel casting mold close-over that is fine and close, consolidation.
When 3, pouring into a mould under high temperature liquid iron effect, resin in precoated sand burns a large amount of gases produced can fast by 24 venting plugs of cope swage and 28 venting plugs discharge die cavities of drag box swage, the a large amount of gases effectively preventing resin to burn to produce form hyperbar concentrating of casting mold top, thus avoid casting mold close-over to occur cracking, obscission under hyperbar and the scorching hot effect of high temperature.
In sum, the utility model by setting up venting plug at upper and lower sandbox swage, thus obtains densification and the upper and lower case casting mold close-over of consolidation, simultaneously true when protecting cast in casting mold close-over the resin a large amount of gases produced that burns can arrange outward in time.After using the upper and lower sandbox swage improved there is not the casting flaws such as fleshiness projection, burning into sand in foundry goods, and up-to-standard rate improves 6%-8%.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details:
Fig. 1 is the schematic diagram of cope swage;
Fig. 2 is the schematic diagram of drag box swage;
Fig. 3 is the schematic diagram after cope swage and upper metal pattern assemble;
Fig. 4 is the schematic diagram after drag box swage and lower metal pattern assemble;
Fig. 5 is the schematic diagram after cope swage and the mould assembling of drag box swage;
Fig. 6 is the schematic diagram of venting plug;
Fig. 7 is the schematic diagram of the another kind of structure of venting plug.
Detailed description of the invention
As shown in one of Fig. 1 to Fig. 7, a kind of brake drum swage of the utility model precoated sand fabrication technique special shape mo(u)lding box swage, it comprises cope swage 1 and drag box swage 2, by the inner die cavity formed for casting brake drum of assembling between described cope swage 1 and drag box swage 2, described cope swage 1 with the outer wall of drag box swage 2 is evenly provided with respectively multiple steam vent 11,21 be communicated with die cavity, be equipped with venting plug 3 in each steam vent 11,21.
The diameter of the steam vent on described cope swage 1 and drag box swage 2 outer wall is 20mm.
In the present embodiment, the steam vent 11 on cope swage 1 outer wall is 24, and the steam vent 21 on drag box swage 2 outer wall is 28.
Cope swage 1 and upper metal pattern 4 assemble, top box casting mold close-over process is formed: as shown in Figure 3 after penetrating sand, cope swage 1 and upper metal pattern 4 assemble and form top box casting mold cavity, when penetrating sand, under the filling injecting the precoated sand in top box casting mold cavity fast, air in top box casting mold cavity is discharged fast from the venting plug 3 cope swage 1, thus because the exhaust of the empty chamber air of top box casting mold is smooth, the filling of precoated sand is obstructed when avoiding penetrating sand, finally obtain top box casting mold close-over that is fine and close, consolidation.
Drag box swage 2 and lower metal pattern 5 assemble, nowel casting mold close-over process is formed: as shown in Figure 4 after penetrating sand, drag box swage 2 and lower metal pattern 5 assemble and form nowel casting mold cavity, when penetrating sand, under the filling injecting the precoated sand in nowel casting mold cavity fast, air in nowel casting mold cavity is discharged fast from the venting plug 3 drag box swage 2, thus because the exhaust of the empty chamber air of nowel casting mold is smooth, the filling of precoated sand is obstructed when avoiding penetrating sand, finally obtain nowel casting mold close-over that is fine and close, consolidation.
As shown in Figure 5, after upper and lower casting mold close-over is shaping, mould assembling forms casting mold, and pours into a mould.During cast under high temperature liquid iron effect, resin in the precoated sand a large amount of gases produced that burn can discharge die cavity by 24 venting plugs 3 of cope swage 1 and 28 venting plugs 3 of drag box swage 2 fast, the a large amount of gases effectively preventing resin to burn to produce form hyperbar concentrating of casting mold top, thus avoid casting mold close-over to occur cracking, obscission under hyperbar and the scorching hot effect of high temperature.
As a kind of embodiment of venting plug 3, as shown in Figure 6, the periphery of venting plug 3 is the smooth face of cylinder, and venting plug 3 and steam vent are matched in clearance.
As another preferred embodiment of venting plug 3, as shown in Figure 7, the external cylindrical surface of venting plug 3 is provided with external screw thread, venting plug 3 is threaded with steam vent, such structure, the cleaning of venting plug 3, change more convenient, can guarantee that the position of venting plug 3 in cope swage 1 and drag box swage 2 immobilizes simultaneously.
Claims (4)
1. a brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage, it comprises cope swage and drag box swage, by the inner die cavity formed for casting brake drum of assembling between described cope swage and drag box swage, it is characterized in that: described cope swage is evenly provided with multiple steam vent be communicated with die cavity respectively with on the outer wall of drag box swage, is equipped with venting plug in each steam vent.
2. a kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage according to claim 1, is characterized in that: the diameter of the steam vent on described cope swage and drag box swage outer wall is 20mm.
3. a kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage according to claim 1 and 2, is characterized in that: described venting plug and steam vent are matched in clearance.
4. a kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage according to claim 1, is characterized in that: the external cylindrical surface of described venting plug is provided with external screw thread, and venting plug is threaded with steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135676.1U CN204545324U (en) | 2015-03-11 | 2015-03-11 | A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135676.1U CN204545324U (en) | 2015-03-11 | 2015-03-11 | A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage |
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| CN204545324U true CN204545324U (en) | 2015-08-12 |
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| CN201520135676.1U Expired - Fee Related CN204545324U (en) | 2015-03-11 | 2015-03-11 | A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage |
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Cited By (5)
| 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 |
| CN107671246A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap |
| CN109500360A (en) * | 2018-12-22 | 2019-03-22 | 山西汤荣机械制造股份有限公司 | A kind of flexibility swage production technology |
| CN109794582A (en) * | 2019-03-22 | 2019-05-24 | 浙江省机电设计研究院有限公司 | When Sand-Faced Metal Mould Casting molten iron casting locally breathe freely swage gas permeable devices and its working method |
| CN110769536A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Application of electric heating assembly for electromagnetic induction heating |
-
2015
- 2015-03-11 CN CN201520135676.1U patent/CN204545324U/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN107671246A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap |
| CN110769536A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Application of electric heating assembly for electromagnetic induction heating |
| CN110769536B (en) * | 2018-07-28 | 2022-04-29 | 江阴市惠尔信精密装备股份有限公司 | Die of electric heating assembly heated by electromagnetic induction |
| CN109500360A (en) * | 2018-12-22 | 2019-03-22 | 山西汤荣机械制造股份有限公司 | A kind of flexibility swage production technology |
| CN109794582A (en) * | 2019-03-22 | 2019-05-24 | 浙江省机电设计研究院有限公司 | When Sand-Faced Metal Mould Casting molten iron casting locally breathe freely swage gas permeable devices and its working method |
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Effective date of registration: 20171130 Granted publication date: 20150812 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20200311 |