CN103317100A - Method for manufacturing ductile iron hub - Google Patents
Method for manufacturing ductile iron hub Download PDFInfo
- Publication number
- CN103317100A CN103317100A CN201210075672XA CN201210075672A CN103317100A CN 103317100 A CN103317100 A CN 103317100A CN 201210075672X A CN201210075672X A CN 201210075672XA CN 201210075672 A CN201210075672 A CN 201210075672A CN 103317100 A CN103317100 A CN 103317100A
- Authority
- CN
- China
- Prior art keywords
- heat preservation
- core
- riser buss
- mould
- wheel hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A method for manufacturing a ductile iron hub comprises the following steps: inserting and partially merging a exothermic and insulatedriser sleeve into the top of a core; placing the exothermic and insulated riser sleeve and the core in a mould, and forming a hub-shaped cavity between the mould and the core; casting an iron liquid into the cavity, and making the iron liquid to fill the cavity, pass through an ingate in the core and enter into the exothermic and insulated riser sleeve; cooling the iron liquid in the cavity, prolonging the cooling time of the iron liquid in the exothermic and insulated riser sleeve by utilizing heating of the exothermic and insulated riser sleeve, and making the iron liquid in the exothermic and insulated riser sleeve to feed the iron liquid in the cavity; after completing cooling of the iron liquid, opening and removing the mould, taking out the exothermic and insulated riser sleeve, melting the core, and then finishing casting of the ductile iron hub. The manufacturing method of the ductile iron hub not only helps to effectively improve the internal density of the ductile iron hub, but also helps to minimize the dimension of the riser sleeve, and therefore metal utilization rate is substantially improved, and production cost is reduced.
Description
Technical field
The present invention relates to a kind of method of making the magnesium iron wheel hub, relate in particular to a kind of method of utilizing insulating and heating riser to make the magnesium iron wheel hub.
Background technology
When the magnesium iron wheel hub cooled off in casting mold, solidified earlier at the thinnest position, and its contraction can when solidifying than thickness portion, can be compensated by the thickest part again by near thicker part compensation, and when thick solidified, if can not get compensation, this place will form big shrinkage cavity.At this moment, just need to compensate the contraction of wheel hub casts in process of setting by rising head, to obtain not have the sound casting of shrinkage cavity.Because the molten iron heat exhaustion in cast and cooling procedure of magnesium iron wheel hub is big, and is too fast for preventing that rising head from solidifying, the size of rising head is all bigger usually, but can reduce the utilization rate of metal so again, improves the 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 a kind of method of making the magnesium iron wheel hub is proposed, it places the heat preservation riser buss by the inside at fuse, not only effectively improved the density of magnesium iron wheel hub casts inside, also reduced the size of riser buss, improve using rate of metal greatly, 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 making the magnesium iron wheel hub, comprises the steps: step 1: be ready to cast the required mould of magnesium iron wheel hub, core and heat preservation riser buss; Step 2: described heat preservation riser buss is inserted the top of described core, and described heat preservation riser buss is not submerged in the described core fully; Step 3: described heat preservation riser buss and described core are inserted in the described mould, make between described mould and the described core die cavity that forms 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 the ingate through being arranged on the described core enters described heat preservation riser buss; Step 5: the iron liquid in the described die cavity is cooled off, utilize described heat preservation riser buss heating to delay the cool time of the iron liquid in the described heat preservation riser buss, make the iron liquid in the described heat preservation riser buss carry out feeding to the iron liquid in the described die cavity; Step 6: treat that described iron liquid cooling but finishes, open and remove described mould, take out described heat preservation riser buss, dissolve away described core, namely finish the casting of magnesium iron wheel hub.
The method of described manufacturing magnesium iron wheel hub, preferably need described core separated into two parts is made when preparing core in the described step 1, two parts are along horizontal direction or vertical somatotype, accordingly, in the described step 3: described core inserted in the described mould specifically comprise: earlier the part of described core is inserted in the described mould, again another part of described core is inserted in the described mould, then two parts of described core are used the foundry work glue bond together.
The method of described manufacturing magnesium iron wheel hub preferably needs Mold Making is become the upper die and lower die of upper and lower fastening when preparing mould in the described step 1; Accordingly, in the described step 3 described heat preservation riser buss and described core inserted in the described mould and specifically comprise: earlier described heat preservation riser buss and described core are inserted described counterdie, described patrix again closes; Opening and remove described mould in the described step 6 specifically comprises: remove described patrix earlier, remove described counterdie again.
The method of described manufacturing magnesium iron wheel hub, preferably need at the top of heat preservation riser buss passage is set when preparing the heat preservation riser buss in the described step 1, the upper surface that also needs described passage is led to described mould when accordingly, inserting described heat preservation riser buss in the described mould in the described step 3.
The method of described manufacturing magnesium iron wheel hub preferably makes in the described heat preservation riser buss and is added with exothermic mixture and oxidant.
More preferably, described exothermic mixture is Al.
More preferably, described oxidant is the combination of any one or at least two among Fe2O3, Fe3O4, the WnO2.
More preferably, also be added with strong oxidizer in the described heat preservation riser buss.
More preferably, described strong oxidizer is KNO3 or KMnO4.
Compared with prior art, the present invention has following beneficial effect: be added with a certain amount of exothermic mixture and oxidant in the material of heat preservation riser buss of the present invention, after injecting molten metal, the exothermic mixture oxidation heat liberation prolongs riser buss inner metal liquid setting time under the heat effect of molten metal, thereby effectively foundry goods is carried out feeding, prevent shrinkage cavity and shrinkage porosite, improved the internal soundness of foundry goods; In addition, can only be by increased in size the delay the iron liquid cooling but riser buss of time compared to existing technology, heat preservation riser buss size of the present invention reduces greatly, has significantly improved the yield rate of casting process, improve economic benefit, reduced rising head cleaning and repair welding workload.
Description of drawings
Fig. 1 is the structural representation of heat preservation riser buss.
Fig. 2 is the structural representation of heat preservation riser buss shown in Figure 1 when being used for cast magnesium iron wheel hub.
The specific embodiment
In order to further specify principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Consult Fig. 1, this heat preservation riser buss 1 roughly is the cup-shaped of back-off, its openend 12 down, blind end 13 up, and blind end 13 offers passage 131.Riser buss common in the shape of heat preservation riser buss 1 of the present invention and the prior art is identical, different is, be added with a certain amount of exothermic mixture and oxidant in the material of heat preservation riser buss 1 of the present invention, after injecting molten metal, exothermic mixture oxidation heat liberation under the effect of molten metal prolongs riser buss inner metal liquid setting time, can effectively carry out feeding to foundry goods, prevent lockhole and shrinkage porosite, improve the quality of foundry goods inside.
Exothermic mixture in this heat preservation riser buss 1 can adopt Al(aluminium) realize that aluminium powder can be emitted heat molten metal is heated in oxidizing process, thus delay the setting time of molten metal.Oxidant at thermit reaction generally adopts Fe
2O
3(di-iron trioxide), Fe
3O
4(tri-iron tetroxide), WnO
2Any one or at least two s' combination in (manganese dioxide).In addition, but also can add some feeding Al necessary strong oxidizer in process of setting in this heat preservation riser buss 1, as: KNO
3Or KMnO
4Deng.
Consult Fig. 2, utilize the step of above-mentioned heat preservation riser buss 1 cast magnesium iron wheel hub as follows.
Step 1: be ready to cast the required mould (not shown) of magnesium iron wheel hub, core 3 and heat preservation riser buss 1.When preparing core 3, need core 3 separated into two parts are made, make two parts become last core 31 and following core 32(in other embodiments along the horizontal direction somatotype, also can be according to the difference of wheel hub shape, structure, with core longitudinally somatotype become levorotation core and right core), follow-up core 3 is put into mould with convenient.After conveniently pouring, foundry goods is taken out, usually Mold Making is become patrix (not shown) and the counterdie (not shown) of upper and lower fastening.
Step 2: heat preservation riser buss 1 is inserted the top of going up core 31, and heat preservation riser buss 1 is not submerged fully go up in the core 31.The inside of last core 31 has cavity, and cavity extends to the top always, and the top of last core 3 is core print, and heat preservation riser buss 1 openend 12 namely is inserted in the core print of core 31.
Step 3: will descend core 32 to put into counterdie, to go up core 31 then and on it heat preservation riser buss 1 be placed on down core 32 above, to go up core 31 with foundry work glue is bonded together with following core 32, the patrix that closes namely forms the die cavity 2 of a wheel hub shape between the synthetic mould of upper and lower mould this moment and the core 3.
Notice that in this step, for easy to exhaust with reduce defectives such as foundry goods slag inclusion, pore, the passage 131 at heat preservation riser buss 1 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 the ingate 33 through being arranged on the core 3 enters heat preservation riser buss 1.
Step 5: the iron liquid in the die cavity 2 is cooled off, utilize the heating of heat preservation riser buss to delay to be positioned at the cool time of iron liquid wherein, thereby the iron liquid in the heat preservation riser buss can be back in the die cavity 2 through ingate 33, the iron liquid in the die cavity 2 is carried out feeding.
Step 6: treat that the iron liquid cooling but finishes, remove patrix, take out heat preservation riser buss 1 then, remove counterdie again, dissolve away core 3, namely finished the casting of magnesium iron wheel hub.
In sum, be added with a certain amount of exothermic mixture and oxidant in the material of heat preservation riser buss of the present invention, after injecting molten metal, the exothermic mixture oxidation heat liberation prolongs riser buss inner metal liquid setting time under the heat effect of molten metal, thereby effectively foundry goods is carried out feeding, prevent shrinkage cavity and shrinkage porosite, improved the internal soundness of foundry goods; In addition, can only be by increased in size the delay the iron liquid cooling but riser buss of time compared to existing technology, heat preservation riser buss size of the present invention reduces greatly, has significantly improved the yield rate of casting process, improve economic benefit, reduced rising head cleaning and repair welding workload.
What deserves to be mentioned is, in the manufacture method of above-mentioned magnesium iron wheel hub, the quantity of heat preservation riser buss can be one, also can be a plurality of, the size of wheel hub is more little, and the quantity of required heat preservation riser buss is just more few, and all heat preservation riser busses all must be arranged in the top of core, thereby be convenient to the circumferencial direction of even feeding wheel hub, guarantee the uniformity of circumference of hub direction density.
Below only be preferable possible embodiments of the present invention, and unrestricted protection scope of the present invention, the equivalent structure that all utilizations specification of the present invention and accompanying drawing content have been done changes, and all is included in protection scope of the present invention.
Claims (9)
1. a method of making the magnesium iron wheel hub is characterized in that, comprises the steps:
Step 1: be ready to cast the required mould of magnesium iron wheel hub, core and heat preservation riser buss;
Step 2: described heat preservation riser buss is inserted the top of described core, and described heat preservation riser buss is not submerged in the described core fully;
Step 3: described heat preservation riser buss and described core are inserted in the described mould, make between described mould and the described core die cavity that forms 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 the ingate through being arranged on the described core enters described heat preservation riser buss;
Step 5: the iron liquid in the described die cavity is cooled off, utilize described heat preservation riser buss heating to delay the cool time of the iron liquid in the described heat preservation riser buss, make the iron liquid in the described heat preservation riser buss carry out feeding to the iron liquid in the described die cavity;
Step 6: treat that described iron liquid cooling but finishes, open and remove described mould, take out described heat preservation riser buss, dissolve away described core, namely finish the casting of magnesium iron wheel hub.
2. the method for manufacturing magnesium iron wheel hub as claimed in claim 1, it is characterized in that, need described core separated into two parts is made when preparing core in the described step 1, two parts are along horizontal direction or vertical somatotype, in the described step 3: described core inserted in the described mould specifically comprise: earlier the part of described core is inserted in the described mould, again another part of described core is inserted in the described mould, then two parts of described core are used the foundry work glue bond together.
3. the method for manufacturing magnesium iron wheel hub as claimed in claim 1 is characterized in that, needs Mold Making is become the upper die and lower die of upper and lower fastening when preparing mould in the described step 1; In the described step 3 described heat preservation riser buss and described core inserted in the described mould and specifically comprise: earlier described heat preservation riser buss and described core are inserted described counterdie, described patrix again closes; Opening and remove described mould in the described step 6 specifically comprises: remove described patrix earlier, remove described counterdie again.
4. the method for manufacturing magnesium iron wheel hub as claimed in claim 1, it is characterized in that, need at the top of heat preservation riser buss passage to be set when preparing the heat preservation riser buss in the described step 1, also need described passage is led to the upper surface of described mould when inserting described heat preservation riser buss in the described mould in the described step 3.
5. the method for manufacturing magnesium iron wheel hub as claimed in claim 1 is characterized in that, is added with exothermic mixture and oxidant in the described heat preservation riser buss.
6. the method for manufacturing magnesium iron wheel hub as claimed in claim 5 is characterized in that, described exothermic mixture is Al.
7. the method for manufacturing magnesium iron wheel hub as claimed in claim 5 is characterized in that, described oxidant is Fe
2O
3, Fe
3O
4, WnO
2In any one or at least two s' combination.
8. the method for manufacturing magnesium iron wheel hub as claimed in claim 5 is characterized in that, also is added with strong oxidizer in the described heat preservation riser buss.
9. the method for manufacturing magnesium iron wheel hub as claimed in claim 8 is characterized in that, described strong oxidizer is KNO
3Or KMnO
4
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 |
|---|---|---|---|
| CN201210075672.XA CN103317100B (en) | 2012-03-21 | 2012-03-21 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103317100A true CN103317100A (en) | 2013-09-25 |
| CN103317100B CN103317100B (en) | 2016-05-04 |
Family
ID=49186307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210075672.XA Active CN103317100B (en) | 2012-03-21 | 2012-03-21 | A kind of method of manufacturing S. G. Cast Iron Wheel Hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103317100B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776259A (en) * | 2015-04-21 | 2015-07-15 | 南通华东油压科技有限公司 | Electrohydraulic valve body casting |
| CN105057597A (en) * | 2015-08-21 | 2015-11-18 | 广东富华铸锻有限公司 | Process for solving shrinkage problem of circular bead R of top face of brake drum |
| 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 |
| 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 |
| CN107262672A (en) * | 2017-07-31 | 2017-10-20 | 常州中车汽车零部件有限公司 | A kind of dead head structure, core and the method for preventing rising head seepage molten iron |
| 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 |
| CN108723302A (en) * | 2018-08-15 | 2018-11-02 | 山东大学 | A kind of spheroidal graphite cast-iron heat preservation riser and preparation method thereof |
Citations (7)
| 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 |
| US6986380B1 (en) * | 2004-07-30 | 2006-01-17 | Hayes Lemmerz International, Inc. | Vehicle wheel mold having a screenless gate |
| 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 |
-
2012
- 2012-03-21 CN CN201210075672.XA patent/CN103317100B/en active Active
Patent Citations (7)
| 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 |
| US6986380B1 (en) * | 2004-07-30 | 2006-01-17 | Hayes Lemmerz International, Inc. | Vehicle wheel mold having a screenless gate |
| 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 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776259A (en) * | 2015-04-21 | 2015-07-15 | 南通华东油压科技有限公司 | Electrohydraulic valve body casting |
| CN105057597A (en) * | 2015-08-21 | 2015-11-18 | 广东富华铸锻有限公司 | Process for solving shrinkage problem of circular bead R of top face of brake drum |
| 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 |
| 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 |
| CN107262672A (en) * | 2017-07-31 | 2017-10-20 | 常州中车汽车零部件有限公司 | A kind of dead head structure, core and the method for preventing rising head seepage molten iron |
| 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 |
| CN108723302A (en) * | 2018-08-15 | 2018-11-02 | 山东大学 | A kind of spheroidal graphite cast-iron heat preservation riser and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103317100B (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103317100A (en) | Method for manufacturing ductile iron hub | |
| CN104985128B (en) | One kind casting multi-laminate pours running gate system and technique | |
| CN104353784B (en) | A kind of fine casting method of high temperature alloy cavity complex thin-wall structural member skeleton | |
| CN102921902B (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN102806313B (en) | Method for preventing casting boss from shrinkage porosity | |
| CN103658535A (en) | Investment casting process of large copper impeller | |
| CN111872325B (en) | Coupler body casting process | |
| CN103056300A (en) | Production process for high-strength sand moulds and cores added with novel chill | |
| CN104014738A (en) | Combined core for casting tiny channels and application method thereof | |
| CN101618429A (en) | Method for casting hub casts of aerogenerators | |
| CN107866532A (en) | A kind of crane wheel graphite mould hanging sand serves as a contrast gravity foundry technology | |
| CN106077472A (en) | A kind of hot investment casting moulding process of foundry goods | |
| CN103495702A (en) | Precision investment casting method capable of changing coagulation and heat dissipation conditions of casting | |
| CN104550855A (en) | Casting technique of imbedding type composite hammerhead | |
| JP5965075B2 (en) | Method for producing pressure-impregnated metal substrate composite material | |
| CN202527690U (en) | Solidification system for manufacturing magnesium alloy casting ingot | |
| JP2015039723A (en) | Casting method of wheel or wheel center part | |
| CN106623810A (en) | Casting method for motorcycle aluminum alloy wheel with hollow hub | |
| CN101284305B (en) | High manganese steel casting grain refinement casting technique | |
| CN104439147A (en) | Method for treating casting contraction cavities | |
| CN101099997A (en) | Retreat casting method for casting train wheel | |
| CN103978159A (en) | Gating system for cylinder cover of single-cylinder air cooled engine | |
| CN209110103U (en) | A kind of double riser molding sand casting dies of station column | |
| CN107377882A (en) | A kind of iron casting processing method | |
| CN112453324A (en) | Investment casting method based on novel casting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |