CN110421134A - The method of metal mold liner overlay film sand centrifugal casting driving wheel - Google Patents
The method of metal mold liner overlay film sand centrifugal casting driving wheel Download PDFInfo
- Publication number
- CN110421134A CN110421134A CN201910841643.1A CN201910841643A CN110421134A CN 110421134 A CN110421134 A CN 110421134A CN 201910841643 A CN201910841643 A CN 201910841643A CN 110421134 A CN110421134 A CN 110421134A
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- Prior art keywords
- sand
- driving wheel
- liner
- mold
- metal mold
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/101—Moulds
- B22D13/102—Linings for moulds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A kind of method of metal mold liner overlay film sand centrifugal casting driving wheel sequentially includes the following steps: (1) using sand mold inner liner metal type, and wherein sand mold is made of precoated sand, and the interior space shape of sand mold liner is identical as driving wheel shape；(2) sand mold inner liner metal type is mounted on centrifuge；(3) melting molten steel；It, will be in pouring molten steel to sand mold inner liner metal type in the case where centrifuge starting；(4) after centrifugal rotation at least 10min, molten steel solidification molding obtains crude green body；(5) sand removal and riser is cut off, then driving wheel is made after sandblasting.The defects of bright and clean beauty of driving wheel appearance that method of the invention obtains, interior pore-free slag inclusion shrinkage porosite sand holes；And it can realize the continuous batch production line of mechanization, automation.
Description
Technical field
The invention belongs to metal casting processing technique field, in particular to a kind of metal mold liner overlay film sand centrifugal casting drives
The method of driving wheel.
Background technique
Driving wheel in tracked construction equipment, such as crawler dozer, tractor, excavator, life traditional at present
One is forging, low efficiencys at high cost for production method；Another kind is ordinary sand casting i.e. founding, and qualification rate is very low, stomata, sand
The casting flaws such as eye, slag inclusion, shrinkage porosite are frequent occurrence；Casting is caused to scrap, casting qualified rate is very low；This is one disaster of current industry
Topic.
Summary of the invention
The object of the present invention is to provide a kind of sides of metal mold liner overlay film sand centrifugal casting driving wheelMethod, on centrifuge
Metal mold liner precoated sand sand mold, molten steel of casting in casting mold rotation, molten steel quickly flow into type chamber, gas under the influence of centrifugal force
The various impurity such as body are expelled from type chamber, are conducive to solidify feeding, to obtain good driving wheel.
Method of the invention sequentially includes the following steps:
1, using sand mold inner liner metal type, wherein sand mold is made of precoated sand, the interior space shape of sand mold liner and drive
Driving wheel shape is identical；The material of the metal mold is ZG20CrMo steel；
2, sand mold inner liner metal type is mounted on centrifuge；
3, according to the molten steel of driving wheel material melting identical component；In the case where centrifuge is actuated for centrifugal rotation,
By molten steel after refining and slagging-off, it is poured into sand mold inner liner metal type；
4, after centrifuge carries out centrifugal rotation at least 10min, molten steel solidification molding obtains crude green body；
5, sand removal and riser is cut off after taking out crude green body, then driving wheel is made after sandblasting.
In the above method, the preparation method of sand mold inner liner metal type are as follows: positioned by penetrating sand machine, make metal mold inner wall and drive
Spacing between driving wheel model outer surface forms filling space；Precoated sand is blown into filling space by penetrating sand machine；Work as overlay film
After sand is full of filling space, to driving wheel model or metal mold electrified regulation, it is set in precoated sand on metal mold inner wall and is formed
Sand mold liner, then driving wheel model is taken out.
6~10mm of thickness of above-mentioned sand mold liner.
In the above method, when starting centrifuge, 150~400rpm of speed of centrifugal rotation.
Above-mentioned driving wheel material selection 35MnB steel.
The defects of bright and clean beauty of driving wheel appearance that method of the invention obtains, interior pore-free slag inclusion shrinkage porosite sand holes；It obtains
Driving wheel cut from outside to inside with lathe, be cut to inside from level to level, do not find any casting flaw；The present invention with from
The method production driving wheel of heart casting and the continuous batch production line that can realize mechanization, automation.
Detailed description of the invention
Fig. 1 is the driving wheel appearance photo figure prepared in the embodiment of the present invention 1.
Specific embodiment
The precoated sand used in the embodiment of the present invention is commercially available VND-1 heat resisting film-coating sand, 70~140 mesh of granularity.
In the embodiment of the present invention, when preparing sand mold inner liner metal type, the metal mold used for two symmetrical semipermanent molds,
The driving wheel model used is two symmetrical half model；Half model and semipermanent mold are positioned by penetrating sand machine, make half model
Have 6~10mm spacing between the inner wall of semipermanent mold, form half sand mold and fill space；Storage by air compressor machine to penetrating sand machine
Gas tank inflation；Precoated sand is added in the hopper of penetrating sand machine, precoated sand is blown to half sand mold by the air pressure of air accumulator and is filled
In space；After precoated sand is full of half sand mold filling space, it is powered and half model is heated, be set in precoated sand in semipermanent mold
Half sand mold liner is formed on wall；After two semipermanent molds with half sand mold liner are merged, sand mold inner liner metal type is formed.
In the embodiment of the present invention, when being powered to half model heating, it is heated to 200~300 DEG C of temperature and keeps the temperature 10~30s again.
Sand removal is to remove surface impurity, time at least 5min using sand cleaning machine in the embodiment of the present invention.
Riser is cut using CG2-600 circle-cutting machine in the embodiment of the present invention.
Melting uses intermediate frequency furnace in the embodiment of the present invention.
Using the continuous batch production line of automation in the embodiment of the present invention, centrifuge is composed in series by 20；Pass through two
Platform metal penetrating sand machine makes sand mold inner liner metal type, the 20 sand mold inner liner metal types of production in 1 hour；It is small using 1.5T intermediate frequency furnace, 1
When melting 1.5T molten steel；Casting is completed by automatic pouring machine, and when casting weighs automatically, automatic turning ladle；Centrifugation terminates laggard
Then row sand removal is transferred to automatic flame cutting machine by conveyer and carries out riser cutting, is then transferred to spray by conveyer
Sand process.
It is right after sandblasting in the embodiment of the present inventionIt drivesDriving wheel is tested, and is examined according to GB/T6414-1999 " casting dimension public affairs
Difference and machine-finish allowance ".
The driving wheel model W190MA-2 for tracked construction equipment prepared in the embodiment of the present invention.
The precoated sand used in the embodiment of the present invention is commercially available VND-1 heat resisting film-coating sand, 70~40 mesh of granularity.
Embodiment 1
Using sand mold inner liner metal type, wherein sand mold is made of precoated sand, the interior space shape of sand mold liner and driving
It is identical to take turns shape；The material of the metal mold is ZG20CrMo steel；The thickness 8mm of sand mold liner；
Sand mold inner liner metal type is mounted on centrifuge；
Driving wheel material selection 35MnB steel, according to the molten steel of driving wheel material melting identical component, molten steel total weight
80Kg；In the case where centrifuge is actuated for centrifugal rotation, by molten steel after refining and slagging-off, it is poured into lining gold in sand mold
In genotype；The speed 150rpm of centrifugal rotation；
After centrifuge carries out centrifugal rotation 10min, molten steel solidification molding obtains crude green body；
Sand removal and riser is cut off after crude green body is taken out, then W190MA-2 driving wheel is made after sandblasting, examines storage, outside
It sees as shown in Figure 1, total weight 52.4Kg；
After all 20 driving wheels are made, every 2mm that lathes cuts one layer, until centre, does not occur stomata, sand
The casting flaws such as eye, slag inclusion, shrinkage porosite.
Embodiment 2
With embodiment 1, difference is method:
(1) the thickness 6mm of sand mold liner；
(2) the speed 220rpm of centrifugal rotation；
(3) centrifugal rotation 15min；
After all 40 driving wheels are made, every 2mm that lathes cuts one layer, until centre, does not occur stomata, sand
The casting flaws such as eye, slag inclusion, shrinkage porosite.
Embodiment 3
With embodiment 1, difference is method:
(1) the thickness 10mm of sand mold liner；
(2) the speed 400rpm of centrifugal rotation；
(3) centrifugal rotation 20min；
After all 30 driving wheels are made, every 2mm that lathes cuts one layer, until centre, does not occur stomata, sand
The casting flaws such as eye, slag inclusion, shrinkage porosite.
Claims (5)
1. a kind of side of metal mold liner overlay film sand centrifugal casting driving wheelMethod, it is characterised in that it sequentially includes the following steps:
(1) sand mold inner liner metal type is used, wherein sand mold is made of precoated sand, the interior space shape and driving wheel of sand mold liner
Shape is identical；The material of the metal mold is ZG20CrMo steel；
(2) sand mold inner liner metal type is mounted on centrifuge；
(3) according to the molten steel of driving wheel material melting identical component；In the case where centrifuge is actuated for centrifugal rotation, by steel
Water is poured into sand mold inner liner metal type after refining and slagging-off；
(4) after centrifuge carries out centrifugal rotation at least 10min, molten steel solidification molding obtains crude green body；
(5) sand removal and riser is cut off after taking out crude green body, then driving wheel is made after sandblasting.
2. a kind of side of metal mold liner overlay film sand centrifugal casting driving wheel according to claim 1Method, it is characterised in that
The preparation method of the sand mold inner liner metal type are as follows: positioned by penetrating sand machine, make metal mold inner wall and driving wheel model appearance
Spacing between face forms filling space；Precoated sand is blown into filling space by penetrating sand machine；When precoated sand is empty full of filling
Between after, to driving wheel model or metal mold electrified regulation, so that precoated sand is set in formation sand mold liner on metal mold inner wall, then will
Driving wheel model takes out.
3. a kind of side of metal mold liner overlay film sand centrifugal casting driving wheel according to claim 1Method, it is characterised in that
6~10mm of thickness of the sand mold liner.
4. a kind of side of metal mold liner overlay film sand centrifugal casting driving wheel according to claim 1Method, it is characterised in that
In step (3), when starting centrifuge, 150~400rpm of speed of centrifugal rotation.
5. a kind of side of metal mold liner overlay film sand centrifugal casting driving wheel according to claim 1Method, it is characterised in that
The driving wheel material selection 35MnB steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841643.1A CN110421134A (en) | 2019-09-06 | 2019-09-06 | The method of metal mold liner overlay film sand centrifugal casting driving wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841643.1A CN110421134A (en) | 2019-09-06 | 2019-09-06 | The method of metal mold liner overlay film sand centrifugal casting driving wheel |
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| CN110421134A true CN110421134A (en) | 2019-11-08 |
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| CN201910841643.1A Pending CN110421134A (en) | 2019-09-06 | 2019-09-06 | The method of metal mold liner overlay film sand centrifugal casting driving wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695549A (en) * | 2021-08-24 | 2021-11-26 | 张英华 | Method for manufacturing pressure casting product with alloy lining or inner container |
| CN115070430A (en) * | 2022-06-23 | 2022-09-20 | 福建省祥春科技发展有限公司 | Driving wheel and manufacturing process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB508167A (en) * | 1937-11-12 | 1939-06-27 | Buderus Eisenwerk | Method and apparatus for centrifugally casting annular bodies, for example, pipe flanges |
| JPS59225867A (en) * | 1983-06-03 | 1984-12-18 | Toyota Motor Corp | Investment casting method by utilizing centrifugal force |
| CN102161087A (en) * | 2011-05-21 | 2011-08-24 | 铁岭桦林浮动油封有限公司 | Composite die of centrifugally cast floating oil seal ring |
| CN102728805A (en) * | 2012-07-24 | 2012-10-17 | 武胜琛兰机械制造有限公司 | Precision casting method for casting-channel-free rotational molding of automotive engine flywheel |
| CN206527326U (en) * | 2016-12-24 | 2017-09-29 | 江苏万恒铸业有限公司 | One 1 grade of seed nucleus impeller of pump formwork centrifugal casting device |
-
2019
- 2019-09-06 CN CN201910841643.1A patent/CN110421134A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB508167A (en) * | 1937-11-12 | 1939-06-27 | Buderus Eisenwerk | Method and apparatus for centrifugally casting annular bodies, for example, pipe flanges |
| JPS59225867A (en) * | 1983-06-03 | 1984-12-18 | Toyota Motor Corp | Investment casting method by utilizing centrifugal force |
| CN102161087A (en) * | 2011-05-21 | 2011-08-24 | 铁岭桦林浮动油封有限公司 | Composite die of centrifugally cast floating oil seal ring |
| CN102728805A (en) * | 2012-07-24 | 2012-10-17 | 武胜琛兰机械制造有限公司 | Precision casting method for casting-channel-free rotational molding of automotive engine flywheel |
| CN206527326U (en) * | 2016-12-24 | 2017-09-29 | 江苏万恒铸业有限公司 | One 1 grade of seed nucleus impeller of pump formwork centrifugal casting device |
Non-Patent Citations (2)
| Title |
|---|
| 陈百明主编；张俊喜，孙治国副主编: "《铸造工艺及设计》", 30 November 2016, 北京理工大学出版社 * |
| 齐克敏，丁桦: "《材料成形工艺学》", 31 January 2006, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695549A (en) * | 2021-08-24 | 2021-11-26 | 张英华 | Method for manufacturing pressure casting product with alloy lining or inner container |
| CN115070430A (en) * | 2022-06-23 | 2022-09-20 | 福建省祥春科技发展有限公司 | Driving wheel and manufacturing process thereof |
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