CN103317100B - A kind of method of manufacturing S. G. Cast Iron Wheel Hub - Google Patents
A kind of method of manufacturing S. G. Cast Iron Wheel Hub Download PDFInfo
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- CN103317100B CN103317100B CN201210075672.XA CN201210075672A CN103317100B CN 103317100 B CN103317100 B CN 103317100B CN 201210075672 A CN201210075672 A CN 201210075672A CN 103317100 B CN103317100 B CN 103317100B
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- heat preservation
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- wheel hub
- riser buss
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Abstract
A method of manufacturing S. G. Cast Iron Wheel Hub, step is as follows: heat preservation riser buss is inserted to the top of core, and heat preservation riser buss is not submerged in core completely; Heat preservation riser buss and core are inserted in mould, make to form between mould and core the die cavity of a wheel hub shape; In die cavity, pour into a mould iron liquid, iron liquid is full of die cavity and enters heat preservation riser buss through the ingate being arranged on core; Iron liquid in die cavity is carried out cooling, utilize heat preservation riser buss heating to delay the cool time of the iron liquid in heat preservation riser buss, make the iron liquid in heat preservation riser buss carry out feeding to the iron liquid in die cavity; Treat that iron liquid cooling is complete, open and remove mould, take out heat preservation riser buss, dissolve away core, complete the casting of S. G. Cast Iron Wheel Hub. The manufacture method of this S. G. Cast Iron Wheel Hub has not only effectively improved the density of S. G. Cast Iron Wheel Hub foundry goods inside, has also reduced the size of riser buss, has greatly improved using rate of metal, has reduced production cost.
Description
Technical field
The present invention relates to a kind of method of manufacturing S. G. Cast Iron Wheel Hub, relate in particular to one and utilize insulating and heating riser to manufacture magnesium ironThe method of wheel hub.
Background technology
When S. G. Cast Iron Wheel Hub is cooling in casting mold, first solidify at the thinnest position, and its contraction can be by near thicker partial-compensation,While solidifying compared with thickness portion, can be compensated by the thickest part again, when thick solidifies, if can not get compensation, this placeWill form large shrinkage cavity. Now, just need compensate the contraction of hub cast in process of setting by rising head, not have to obtainThe sound casting of shrinkage cavity. Because S. G. Cast Iron Wheel Hub molten iron heat exhaustion in cast and cooling procedure is large, for preventing that rising head from solidifyingHurry up, the size of rising head is all larger conventionally, but can reduce again like this utilization rate of metal, improves casting cost.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiency that above-mentioned prior art exists, and proposes a kind of ball of manufacturingThe method of iron tyre hub, it places heat preservation riser buss by the inside at fuse, has not only effectively improved S. G. Cast Iron Wheel Hub foundry goodsInner density, has also reduced the size of riser buss, has greatly improved using rate of metal, has reduced production cost.
The technical scheme that the present invention is directed to above-mentioned technical problem and propose comprises, proposes a kind of method of manufacturing S. G. Cast Iron Wheel Hub,Comprise the steps: step 1: be ready to cast the required mould of S. G. Cast Iron Wheel Hub, core and heat preservation riser buss; StepRapid two: described heat preservation riser buss is inserted to the top of described core, and described heat preservation riser buss is not submerged completelyIn described core; Step 3: described heat preservation riser buss and described core are inserted in described mould, make described mouldAnd between described core, form the die cavity of a wheel hub shape; Step 4: pour into a mould iron liquid in described die cavity, described iron liquid fillsFull described die cavity also enters described heat preservation riser buss through the ingate being arranged on described core; Step 5: to described typeIron liquid in chamber carries out cooling, utilizes the heating of described heat preservation riser buss to delay iron liquid in described heat preservation riser bussCool time, make the iron liquid in described heat preservation riser buss carry out feeding to the iron liquid in described die cavity; Step 6:Treat that described iron liquid cooling is complete, open and remove described mould, take out described heat preservation riser buss, dissolve away described core,Complete the casting of S. G. Cast Iron Wheel Hub.
The method of described manufacture S. G. Cast Iron Wheel Hub, preferably need be divided into two by described core when preparing core in described step 1Part is made, and two parts are along horizontal direction or vertical direction somatotype, accordingly, and in described step 3: described core is putEnter in described mould and specifically comprise: first a part for described core is inserted in described mould, then by another portion of described coreDivide and insert in described mould, then two parts of described core are used to foundry work glue bond together.
The method of described manufacture S. G. Cast Iron Wheel Hub, preferably Mold Making need be become when preparing mould in described step 1 upper,The upper die and lower die of lower fastening; Accordingly, described in described heat preservation riser buss and described core being inserted in described step 3In mould, specifically comprise: first described heat preservation riser buss and described core are inserted to described counterdie, the more described patrix that closes;In described step 6, opening and remove described mould specifically comprises: first remove described patrix, then remove described counterdie.
The method of described manufacture S. G. Cast Iron Wheel Hub, preferably need be in heating when preparing heat preservation riser buss in described step 1The top of insulating riser sleeve arranges passage, accordingly, in described step 3, described heat preservation riser buss is inserted to described mouldIn tool time, also need described passage to lead to the upper surface of described mould.
The method of described manufacture S. G. Cast Iron Wheel Hub, preferably makes to be added with exothermic mixture and oxidant in described heat preservation riser buss.
More preferably, described exothermic mixture is Al.
More preferably, described oxidant is Fe2O3, Fe3O4, MnO2In any one or at least two s' combination.
More preferably, in described heat preservation riser buss, be also added with strong oxidizer.
More preferably, described strong oxidizer is KNO3 or KMnO4.
Compared with prior art, the present invention has following beneficial effect: in the material of heat preservation riser buss of the present inventionBe added with a certain amount of exothermic mixture and oxidant, inject after molten metal, under the heat effect of molten metal, exothermic mixture oxidation heat liberation makesRiser buss inner metal liquid setting time extends, thereby effectively foundry goods is carried out to feeding, prevents shrinkage cavity and porosity, has improved foundry goodsInternal soundness; In addition, can only delay the iron liquid riser buss of cool time by increased in size in compared to existing technology, thisInvention heat preservation riser buss size reduces greatly, has significantly improved the yield rate of casting process, has improved economic benefit, subtractsLittle rising head cleaning and repair welding workload.
Brief description of the drawings
Fig. 1 is the structural representation of heat preservation riser buss.
The structural representation that Fig. 2 is heat preservation riser buss shown in Fig. 1 when pouring into a mould S. G. Cast Iron Wheel Hub.
Detailed description of the invention
In order to further illustrate principle of the present invention and structure, now by reference to the accompanying drawings the preferred embodiments of the present invention are carried out in detailDescribe in detail bright.
Consult Fig. 1, this heat preservation riser buss 1 is roughly the cup-shaped of back-off, its openend 12 down, blind end 13Upward, and blind end 13 offer passage 131. In the shape and prior art of heat preservation riser buss 1 of the present inventionCommon riser buss is identical, different, is added with a certain amount of heating in the material of heat preservation riser buss 1 of the present inventionAgent and oxidant, inject after molten metal, and exothermic mixture oxidation heat liberation under the effect of molten metal, solidifies riser buss inner metal liquidTime lengthening, can effectively carry out feeding to foundry goods, prevents lockhole and shrinkage porosite, improves the quality of foundry goods inside.
Exothermic mixture in this heat preservation riser buss 1 can adopt Al (aluminium) to realize, and aluminium powder can be put in oxidizing processGo out heat molten metal is heated, thereby delay the setting time of molten metal. Oxidant for thermit reaction generally adoptsFe2O3(di-iron trioxide), Fe3O4(tri-iron tetroxide), MnO2In (manganese dioxide) any one or at least twoIndividual combination. In addition, in this heat preservation riser buss 1, also can add that some are can feeding Al necessary in process of settingStrong oxidizer, as: KNO3Or KMnO4Deng.
Consult Fig. 2, the step of utilizing above-mentioned heat preservation riser buss 1 to pour into a mould S. G. Cast Iron Wheel Hub is as follows.
Step 1: be ready to cast the required mould (not shown) of S. G. Cast Iron Wheel Hub, core 3 and heat preservation and emitMuzzle 1. In the time preparing core 3, core 3 need be divided into two parts and make, make two parts on horizontal direction somatotype one-tenthCore 31 and lower core 32 (in other embodiments, also can be according to the differences of wheel hub shape, structure, by core longitudinallySomatotype becomes levorotation core and right core), follow-up core 3 is put into mould to facilitate. After pouring for convenience, by foundry goodsTake out, conventionally Mold Making is become to patrix (not shown) and the counterdie (not shown) of upper and lower fastening.
Step 2: heat preservation riser buss 1 is inserted to the top of upper core 31, and make heat preservation riser buss 1 not completeEntirely submerge in upper core 31. The inside of upper core 31 has cavity, and cavity extends to top, the top of upper core 3Portion is core print, and heat preservation riser buss 1 openend 12 is inserted in the core print of core 31.
Step 3: lower core 32 is put into counterdie, then by upper core 31 and on it heat preservation riser buss 1 placeOn lower core 32, upper core 31 and lower core 32 are bonded together with foundry work glue, the patrix that closes, now go up,Between the mould that counterdie is synthetic and core 3, form the die cavity 2 of a wheel hub shape.
Note, in this step, for convenience of exhaust and reduce the defects such as foundry goods slag inclusion, pore, heat preservation riser buss 1The passage 131 at top should lead to the upper surface of mold.
Step 4: pour into a mould iron liquid in die cavity 2, iron liquid is full of die cavity 2 and through being arranged on the ingate 33 on core 3Enter heat preservation riser buss 1.
Step 5: the iron liquid in die cavity 2 is carried out cooling, utilize heat preservation riser buss heating to delay to be positioned at whereinThe cool time of iron liquid, thus the iron liquid in heat preservation riser buss can be back in die cavity 2, to type through ingate 33Iron liquid in chamber 2 carries out feeding.
Step 6: treat that iron liquid cooling is complete, remove patrix, then take out heat preservation riser buss 1, then remove counterdie,Dissolve away core 3, completed the casting of S. G. Cast Iron Wheel Hub.
In sum, in the material of heat preservation riser buss of the present invention, be added with a certain amount of exothermic mixture and oxidant,Inject after molten metal, under the heat effect of molten metal, exothermic mixture oxidation heat liberation extends riser buss inner metal liquid setting time, fromAnd effectively foundry goods is carried out to feeding, and prevent shrinkage cavity and porosity, improve the internal soundness of foundry goods; In addition, compared to existing technologyIn can only delay the iron liquid riser buss of cool time by increased in size, heat preservation riser buss size of the present invention subtracts greatlyLittle, significantly improve the yield rate of casting process, improve economic benefit, reduce rising head cleaning and repair welding workload.
It is worth mentioning that, in the manufacture method of above-mentioned S. G. Cast Iron Wheel Hub, the quantity of heat preservation riser buss can be one,Also can be multiplely, the size of wheel hub is less, and the quantity of required heat preservation riser buss is just fewer, and all heat preservationsRiser buss all must be arranged in the top of core, thereby is convenient to the circumferencial direction of even feeding wheel hub, ensures circumference of hub directionThe uniformity of density.
These are only better possible embodiments of the present invention, not limit the scope of the invention, all utilization the present inventionThe equivalent structure that description and accompanying drawing content have been done changes, and is all included in protection scope of the present invention.
Claims (9)
1. a method of manufacturing S. G. Cast Iron Wheel Hub, is characterized in that, comprises the steps:
Step 1: be ready to cast the required mould of S. G. Cast Iron Wheel Hub, core and heat preservation riser buss;
Step 2: described heat preservation riser buss is inserted to the top of described core, and described heating is protectedTemperature riser buss does not submerge in described core completely;
Step 3: described heat preservation riser buss and described core are inserted in described mould, described in makingBetween mould and described core, form the die cavity of a wheel hub shape;
Step 4: pour into a mould iron liquid in described die cavity, described iron liquid is full of described die cavity and through being arranged onThe ingate of stating on core enters described heat preservation riser buss;
Step 5: the iron liquid in described die cavity is carried out cooling, utilize the heating of described heat preservation riser bussDelay the cool time of the iron liquid in described heat preservation riser buss, make in described heat preservation riser bussIron liquid can carry out feeding to the iron liquid in described die cavity;
Step 6: treat that described iron liquid cooling is complete, open and remove described mould, take out described heating and protectTemperature riser buss, dissolves away described core, completes the casting of S. G. Cast Iron Wheel Hub.
2. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 1, is characterized in that, described step 1When middle preparation core, described core need be divided into two parts and make, two parts are along horizontal direction or vertically squareTo somatotype, in described step 3: described core is inserted in described mould and specifically comprised: first by described typeA part for core is inserted in described mould, then another part of described core is inserted in described mould, soAfter by two parts of described core with foundry work glue bond together.
3. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 1, is characterized in that, described step 1When middle preparation mould, Mold Making need be become to the upper die and lower die of upper and lower fastening; In described step 3 by instituteStating heat preservation riser buss and described core inserts in described mould and specifically comprises: first by described heat preservationRiser buss and described core are inserted described counterdie, the more described patrix that closes; In described step 6, open and moveExcept described mould specifically comprises: first remove described patrix, then remove described counterdie.
4. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 1, is characterized in that, described step 1When middle preparation heat preservation riser buss, need passage be set at the top of heat preservation riser buss, described stepDescribed in also needing described passage to lead to while described heat preservation riser buss being inserted in described mould in threeThe upper surface of mould.
5. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 1, is characterized in that, described heating is protectedIn temperature riser buss, be added with exothermic mixture and oxidant.
6. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 5, is characterized in that, described exothermic mixtureFor Al.
7. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 5, is characterized in that, described oxidantFor Fe2O3、Fe3O4、MnO2In any one or at least two s' combination.
8. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 5, is characterized in that, described heating is protectedIn temperature riser buss, be also added with strong oxidizer.
9. the method for manufacture S. G. Cast Iron Wheel Hub as claimed in claim 8, is characterized in that, described strong oxidationAgent is KNO3Or KMnO4。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210075672.XA CN103317100B (en) | 2012-03-21 | 2012-03-21 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210075672.XA CN103317100B (en) | 2012-03-21 | 2012-03-21 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
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| Publication Number | Publication Date |
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| CN103317100A CN103317100A (en) | 2013-09-25 |
| CN103317100B true CN103317100B (en) | 2016-05-04 |
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| CN201210075672.XA Active CN103317100B (en) | 2012-03-21 | 2012-03-21 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104776259A (en) * | 2015-04-21 | 2015-07-15 | 南通华东油压科技有限公司 | Electrohydraulic valve body casting |
| CN105057603A (en) * | 2015-08-21 | 2015-11-18 | 广东富华铸锻有限公司 | Process for eliminating shrinkage porosity of hub casting |
| CN105057597B (en) * | 2015-08-21 | 2017-07-07 | 广东富华铸锻有限公司 | The technique for solving brake drum top surface R angles shrinkage porosite |
| CN105710306A (en) * | 2016-02-26 | 2016-06-29 | 天津凯星科技有限公司 | Mesopore feeding process of thick and large part in turbine shell casting turbine chamber |
| CN106955973A (en) * | 2017-05-18 | 2017-07-18 | 天润曲轴股份有限公司 | Cast rising head |
| CN107262672B (en) * | 2017-07-31 | 2020-08-25 | 常州中车汽车零部件有限公司 | Riser structure, sand core and method for preventing riser from molten iron leakage |
| CN108097882A (en) * | 2017-12-26 | 2018-06-01 | 无锡市蠡湖铸业有限公司 | Riser component |
| CN108262468A (en) * | 2017-12-29 | 2018-07-10 | 天津宁康科技有限公司 | A kind of efficient heat preservation covering flux |
| CN108723302B (en) * | 2018-08-15 | 2020-04-17 | 山东大学 | Heating and heat-insulating riser for nodular cast iron and preparation method thereof |
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| JPS603942A (en) * | 1983-06-21 | 1985-01-10 | Asahi Malleable Iron Co Ltd | Casting method of wheel hub |
| CN101380665A (en) * | 2007-09-03 | 2009-03-11 | 中国国际海运集装箱(集团)股份有限公司 | Wheel hub casting method and die thereof |
| CN101433944A (en) * | 2008-12-19 | 2009-05-20 | 洛阳双瑞特种装备有限公司 | High-efficient exothermic riser sleeve for casting |
| JP2009241912A (en) * | 2008-04-01 | 2009-10-22 | Ntn Corp | Bearing device for wheel and method of casting housing thereof |
| CN201482937U (en) * | 2009-08-06 | 2010-05-26 | 何灿东 | Hub die |
| CN201815632U (en) * | 2010-09-13 | 2011-05-04 | 江阴联华铸造有限公司 | Vertical line casting die for hub castings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6986380B1 (en) * | 2004-07-30 | 2006-01-17 | Hayes Lemmerz International, Inc. | Vehicle wheel mold having a screenless gate |
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2012
- 2012-03-21 CN CN201210075672.XA patent/CN103317100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603942A (en) * | 1983-06-21 | 1985-01-10 | Asahi Malleable Iron Co Ltd | Casting method of wheel hub |
| CN101380665A (en) * | 2007-09-03 | 2009-03-11 | 中国国际海运集装箱(集团)股份有限公司 | Wheel hub casting method and die thereof |
| JP2009241912A (en) * | 2008-04-01 | 2009-10-22 | Ntn Corp | Bearing device for wheel and method of casting housing thereof |
| CN101433944A (en) * | 2008-12-19 | 2009-05-20 | 洛阳双瑞特种装备有限公司 | High-efficient exothermic riser sleeve for casting |
| CN201482937U (en) * | 2009-08-06 | 2010-05-26 | 何灿东 | Hub die |
| CN201815632U (en) * | 2010-09-13 | 2011-05-04 | 江阴联华铸造有限公司 | Vertical line casting die for hub castings |
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| CN103317100A (en) | 2013-09-25 |
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