CN107363221A - A kind of casting technique of planet carrier - Google Patents
A kind of casting technique of planet carrier Download PDFInfo
- Publication number
- CN107363221A CN107363221A CN201610312199.0A CN201610312199A CN107363221A CN 107363221 A CN107363221 A CN 107363221A CN 201610312199 A CN201610312199 A CN 201610312199A CN 107363221 A CN107363221 A CN 107363221A
- Authority
- CN
- China
- Prior art keywords
- casting
- planet carrier
- rising head
- housing
- loam core
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of casting technique of planet carrier, comprise the following steps：Moulding process：Housing is made, rising head is set in the top center of housing；Loam core is made, the loam core polished is lain in a horizontal plane in the inside center of housing；Sandbox is made, controls the mold thickness of sandbox in 20 30mm；Smelting metal liquid process：First raw material are put into smelting furnace and carry out melting, nodulizer is then added thereto and carries out spheroidising, finally add inovulant and carry out inoculation；Casting molding procedure：The teeming pouring technology molten metal intake using top rising head is poured into housing by rising head；Casting treatment process：Casting is polished and is heat-treated.The present invention reasonably by a dead head top water-injecting technological system, both solves the problems, such as filling and feeding, simplifies production operation again, and casting process yield reaches more than 85%.
Description
Technical field
The present invention relates to planet carrier casting technology field, more particularly to a kind of casting technique of planet carrier.
Background technology
Planet carrier is one of main member of planetary transmission, and planet wheel spindle or bearing are mounted in planet
On frame, when planetary gear is as basic building block, it is that the maximum part of external force torque, planet are born in mechanism
The structure of frame, mainly it is made up of the dowel of upper disk, lower wall and the upper and lower disk of connection, upper disk and lower wall exist
Stagger dowel position on be correspondingly provided with planet axis hole, the center of upper and lower disk is equipped with central shaft hole.
Planet carrier mainly uses casting, higher to the quality requirement of planet carrier in casting cycle.From technology
It is required that, material, design feature analysis, production planet carrier mainly have following difficult point：Casting is high intensity spheroidal graphite
Cast iron, smelting process and operation difficulty are very high；Dimensional accuracy, surface quality requirements are high；Connection on casting
Muscle portion point is thicker big, and the casting flaws such as shrinkage porosite, shrinkage cavity are easily formed at the position, and Internal Quality of Cast is difficult to protect
Card.
In order to avoid the shrinkage cavity occurred in casting cycle and shrinkage porosite phenomenon, use in the prior art in heat energy-saving position
Internal densener is laid, but in the case of batch production, thermal center placement chill is stood very not to many places arc of casting
It is convenient, and contoured chill is manufactured and reclaimed and all has difficulties；In addition, also use in the prior art
Feeding head is set on mould, and feeding head is connected by ring gate, because rising head volume is big, is poured
Road is grown, and rising head, cast gate and the running channel of every blank need weight of molten iron big, cause the waste of molten iron, technique
Yield rate is very low, the cost increase of every product.
Therefore, a kind of casting technique of planet carrier is researched and developed, the product yield and can that can either improve casting reaches
Avoid casting quality defect, it appears increasingly important.
The content of the invention
The purpose of the present invention is that a kind of casting technique of planet carrier is provided the defects of presence for prior art, both
The product yield and can that casting can be improved enough avoids casting quality defect.
In order to solve the above-mentioned technical problem, the invention provides a kind of casting technique of planet carrier, including it is following
Step：S1, moulding process：Housing is made, rising head is set in the top center of the housing；Make loam core,
Loam core is polished after completing, and the loam core polished is lain in a horizontal plane in the inside center of the housing；
Sandbox is made, controls the mold thickness of sandbox the housing to be embedded in the sandbox in 20-30mm；S2、
Smelting metal liquid process：Raw material are put into smelting furnace first and carry out melting, then add nodulizer thereto
Spheroidising is carried out, inovulant is finally added and carries out inoculation；S3, casting molding procedure：Using top
The teeming pouring technology of portion rising head water inlet, molten metal in the step S2 is poured into by the rising head described
Planet carrier casting is produced in housing, after cooling and shaping；S4, casting treatment process：By the casting in step S3
Polished and be heat-treated, finally give planet carrier.
Further, in the step S1, the housing includes upper shell and lower house, the upper shell and
The die cavity of planet carrier, the lower end of the rising head and the die cavity are formed after the lower house matched moulds with the loam core
Upper end communicate；The loam core has the loam core I for being used for forming planet carrier top center axis hole, the rising head
Positioned at the surface of the loam core I.
Preferably, the rising head one and only one.
Preferably, the rising head is heat preservation rising head.
Preferably, a diameter of 90mm of the rising head, it is highly 120mm.
Preferably, the loam core outside hot box by being molded as.
Preferably, in the step S2, nodularization is carried out using angstrom willing board La containing a lanthanum nodulizers.
The casting technique of the planet carrier of the present invention, has the advantages that：
1st, loam core is made using hot box external mold in moulding process of the invention, housing includes upper shell and lower casing
Body, upper shell are provided with a 90 × 120mm of Φ on the position corresponding with planet carrier top center axis hole
Heat preservation rising head carry out feeding, and using the pouring technology that teeming cast is carried out from the rising head, allow molten iron
Disperse everywhere, make the principle solidification that casting solidifies in order, the defects of eliminating internal shrinkage, shrinkage porosite.
2nd, special shape mo(u)lding box is newly made in moulding process of the invention, controls the mold thickness of casting and sandbox to exist
20-30mm, the quick freezing action of chill is played by sandbox so as to improve the feeding effect of casting, reduce casting contracting
Hole, shrinkage defect.
3rd, nodularization is carried out using angstrom willing board La containing a lanthanum nodulizers in smelting metal liquid process of the invention, makes iron
Water shrinks steadily, prevents casting from producing shrinkage cavity and porosity phenomenon.
4th, the present invention can solve the problems, such as filling and feeding reasonably by a dead head top water-injecting technological system,
Production operation can be simplified again.It is other at dowel thermal center etc. by being found after test of many times and anatomical slice
Position is all without shrinkage porosite, shrinkage cavity phenomenon, and outward appearance is clearly better, while cleaning process is also fairly simple.Reduce
The labor intensity of worker, and casting process yield reaches more than 85%.
Brief description of the drawings
, below will be in embodiment or description of the prior art in order to illustrate more clearly of technical scheme
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only this hair
Some bright embodiments, for those of ordinary skill in the art, do not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the mould structure schematic diagram in the moulding process of the present invention.
Wherein, reference corresponds in figure：1- housings, 2- rising heads.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in inventive embodiments is carried out it is clear,
It is fully described by, it is clear that described embodiment is only part of the embodiment of the present invention, rather than all
Embodiment.Based on embodiments of the invention, those of ordinary skill in the art are not making creative work
On the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
The invention provides a kind of casting technique of planet carrier, comprise the following steps：
S1, moulding process (as shown in Figure 1)：Housing 1 is made, is set in the top center of the housing 1
One and only one a diameter of 90mm, the highly rising head 2 for 120mm, the rising head 2 emit for heat preservation
Mouthful；By film production loam core outside hot box, loam core is polished after completing, the loam core water that will have been polished
Inside center of the placing flat in the housing 1；Sandbox is made, controls the mold thickness of sandbox in 20-30mm,
The housing 1 is embedded in the sandbox, specific attachment structure is as follows：The housing 1 includes upper shell
And lower house, the die cavity of planet carrier, institute are formed after the upper shell and the lower house matched moulds with the loam core
The lower end for stating rising head 2 communicates with the upper end of the die cavity；The loam core, which has, to be used to be formed in planet carrier top
The loam core I of arbor hole, the rising head 2 are located at the surface of the loam core I.
S2, smelting metal liquid process：Raw material are put into smelting furnace first and carry out melting, are then added thereto
Enter nodulizer and carry out spheroidising, finally add inovulant and carry out inoculation, wherein, the nodulizer is adopted
Nodularization is carried out with angstrom willing board La containing a lanthanum nodulizers.
S3, casting molding procedure：The teeming pouring technology intake using top rising head, by the step S2
Molten metal is poured into the housing 1 by the rising head 2, allows molten iron to disperse everywhere, makes casting in order
The principle solidification of solidification, the defects of eliminating internal shrinkage, shrinkage porosite, produces planet carrier casting after cooling and shaping；
S4, casting treatment process：Casting in step S3 is polished and is heat-treated, finally gives planet
Frame.
The important technological parameters for the planet carrier produced with present invention process are as follows：
(1) material：QT600-3
(2) tensile strength：≥600Mpa
(3) yield strength：≥370Mpa
(4) elongation percentage：>=3%
(5) hardness：HB190-270
(6) nodulizing grade：>=3 grades
(7) Oxygen potential：>=85%
(8) content of pearlite in alloy：>=70%
(9) cast-internal without slag inclusion, stomata, without the casting flaw phenomenon such as shrinkage cavity shrinkage porosity, spalling
(10) substance：14.2kg
The casting technique of the planet carrier of the present invention, has the advantages that：
1st, loam core is made using hot box external mold in moulding process of the invention, housing includes upper shell and lower casing
Body, upper shell are provided with a 90 × 120mm of Φ on the position corresponding with planet carrier top center axis hole
Heat preservation rising head carry out feeding, and using the pouring technology that teeming cast is carried out from the rising head, allow molten iron
Disperse everywhere, make the principle solidification that casting solidifies in order, the defects of eliminating internal shrinkage, shrinkage porosite.
2nd, special shape mo(u)lding box is newly made in moulding process of the invention, controls the mold thickness of casting and sandbox to exist
20-30mm, the quick freezing action of chill is played by sandbox so as to improve the feeding effect of casting, reduce casting contracting
Hole, shrinkage defect.
3rd, nodularization is carried out using angstrom willing board La containing a lanthanum nodulizers in smelting metal liquid process of the invention, makes iron
Water shrinks steadily, prevents casting from producing shrinkage cavity and porosity phenomenon.
4th, the present invention can solve the problems, such as filling and feeding reasonably by a dead head top water-injecting technological system,
Production operation can be simplified again.It is other at dowel thermal center etc. by being found after test of many times and anatomical slice
Position is all without shrinkage porosite, shrinkage cavity phenomenon, and outward appearance is clearly better, while cleaning process is also fairly simple.Reduce
The labor intensity of worker, and casting process yield reaches more than 85%.
Above disclosed is only presently preferred embodiments of the present invention, can not limit the present invention with this certainly
Interest field, therefore equivalent variations made according to the claims in the present invention, still belong to the model that the present invention is covered
Enclose.
Claims (7)
1. a kind of casting technique of planet carrier, it is characterised in that comprise the following steps：
S1, moulding process：Housing (1) is made, rising head (2) is set in the top center of the housing (1)；
Loam core is made, loam core is polished after completing, and the loam core polished is lain in a horizontal plane in into the housing (1)
Inside center；Sandbox is made, controls the mold thickness of sandbox in 20-30mm, the housing (1) is embedded
In the sandbox；
S2, smelting metal liquid process：Raw material are put into smelting furnace first and carry out melting, are then added thereto
Enter nodulizer and carry out spheroidising, finally add inovulant and carry out inoculation；
S3, casting molding procedure：The teeming pouring technology intake using top rising head, by the step S2
Molten metal is poured into the housing (1) by the rising head (2), and planet carrier casting is produced after cooling and shaping
Part；
S4, casting treatment process：Casting in step S3 is polished and is heat-treated, finally gives planet
Frame.
2. the casting technique of planet carrier according to claim 1, it is characterised in that in the step S1,
The housing (1) includes upper shell and lower house, after the upper shell and the lower house matched moulds with the mud
Core forms the die cavity of planet carrier, and the lower end of the rising head (2) communicates with the upper end of the die cavity；The loam core
With the loam core I for forming planet carrier top center axis hole, the rising head (2) is located at the loam core I
Surface.
3. the casting technique of planet carrier according to claim 2, it is characterised in that the rising head (2)
One and only one.
4. the casting technique of planet carrier according to claim 3, it is characterised in that the rising head (2)
For heat preservation rising head.
5. the casting technique of the planet carrier according to any one claim in claim 2-4, its feature
It is, a diameter of 90mm of the rising head (2), is highly 120mm.
6. the casting technique of planet carrier according to claim 5, it is characterised in that the loam core passes through
Hot box is molded as outside.
7. the casting technique of planet carrier according to claim 1, it is characterised in that in the step S2,
Nodularization is carried out using angstrom willing board La containing a lanthanum nodulizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312199.0A CN107363221A (en) | 2016-05-12 | 2016-05-12 | A kind of casting technique of planet carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312199.0A CN107363221A (en) | 2016-05-12 | 2016-05-12 | A kind of casting technique of planet carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107363221A true CN107363221A (en) | 2017-11-21 |
Family
ID=60303514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610312199.0A Pending CN107363221A (en) | 2016-05-12 | 2016-05-12 | A kind of casting technique of planet carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107363221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101581A (en) * | 2021-10-21 | 2022-03-01 | 浙江林家昌隆阀门铸造有限公司 | Casting heat preservation method |
| CN115041634A (en) * | 2022-03-27 | 2022-09-13 | 宁波拓铁机械有限公司 | Casting method of wind power planet carrier casting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4235637A1 (en) * | 1992-10-22 | 1994-04-28 | Zahnradfabrik Friedrichshafen | Prodn. of planetary supports for epicyclic gears for automobiles etc. - includes basic body produced by cold box process with inserted cores for openings in planetary support |
| CN101628323A (en) * | 2009-08-07 | 2010-01-20 | 通州市四安球墨铸铁有限公司 | Casting process of nodular cast iron planet carrier |
| CN202239501U (en) * | 2011-10-17 | 2012-05-30 | 田旭明 | Planet carrier casting mould |
| CN103600035A (en) * | 2013-03-06 | 2014-02-26 | 南通华东油压科技有限公司 | Manufacturing technology of walking machinery bracket casting |
| CN104084540A (en) * | 2014-08-05 | 2014-10-08 | 临沂格凌精密机械制造有限公司 | Planet carrier casting method |
| CN104174819A (en) * | 2014-08-22 | 2014-12-03 | 常熟市虹桥铸钢有限公司 | Casting technology for three-stage planetary frame of ocean platform climbing machine |
| CN104439096A (en) * | 2014-09-15 | 2015-03-25 | 宝鼎重工股份有限公司 | Casting forming mould and method of planet carrier for lifting gearbox of self-elevating offshore platform |
-
2016
- 2016-05-12 CN CN201610312199.0A patent/CN107363221A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4235637A1 (en) * | 1992-10-22 | 1994-04-28 | Zahnradfabrik Friedrichshafen | Prodn. of planetary supports for epicyclic gears for automobiles etc. - includes basic body produced by cold box process with inserted cores for openings in planetary support |
| CN101628323A (en) * | 2009-08-07 | 2010-01-20 | 通州市四安球墨铸铁有限公司 | Casting process of nodular cast iron planet carrier |
| CN202239501U (en) * | 2011-10-17 | 2012-05-30 | 田旭明 | Planet carrier casting mould |
| CN103600035A (en) * | 2013-03-06 | 2014-02-26 | 南通华东油压科技有限公司 | Manufacturing technology of walking machinery bracket casting |
| CN104084540A (en) * | 2014-08-05 | 2014-10-08 | 临沂格凌精密机械制造有限公司 | Planet carrier casting method |
| CN104174819A (en) * | 2014-08-22 | 2014-12-03 | 常熟市虹桥铸钢有限公司 | Casting technology for three-stage planetary frame of ocean platform climbing machine |
| CN104439096A (en) * | 2014-09-15 | 2015-03-25 | 宝鼎重工股份有限公司 | Casting forming mould and method of planet carrier for lifting gearbox of self-elevating offshore platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101581A (en) * | 2021-10-21 | 2022-03-01 | 浙江林家昌隆阀门铸造有限公司 | Casting heat preservation method |
| CN115041634A (en) * | 2022-03-27 | 2022-09-13 | 宁波拓铁机械有限公司 | Casting method of wind power planet carrier casting |
| CN115041634B (en) * | 2022-03-27 | 2023-07-18 | 宁波拓铁机械有限公司 | Casting method of wind power planet carrier casting |
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Application publication date: 20171121 |