CN107052257A - Engine cylinder body sand core and its core assembly method - Google Patents
Engine cylinder body sand core and its core assembly method Download PDFInfo
- Publication number
- CN107052257A CN107052257A CN201710184203.4A CN201710184203A CN107052257A CN 107052257 A CN107052257 A CN 107052257A CN 201710184203 A CN201710184203 A CN 201710184203A CN 107052257 A CN107052257 A CN 107052257A
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- CN
- China
- Prior art keywords
- core
- jacket
- cap
- cylinder body
- gap
- 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
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Classifications
-
- 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
- B22C9/103—Multipart cores
-
- 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
- B22C9/108—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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a kind of core assembly method of Engine cylinder body sand core, including step：Make to set gap between jacket core and cap core.The present invention sets certain gap between jacket core and the group core position of cap core, allows jacket core with having certain free degree, noresidue stress after cap core group core；So that jacket core is under casting, the condition of high temperature of process of setting, there is certain yielding space during expanded by heating, can avoid producing micro-crack between jacket core and cap core group core position, and then reduce the casting vein that cylinder body is produced.Present invention also offers a kind of Engine cylinder body sand core, including jacket core and cap core, gap is provided between jacket core and cap core, jacket core is allowed with having certain free degree, noresidue stress after cap core group core；So that jacket core is under casting, the condition of high temperature of process of setting, there is certain yielding space during expanded by heating, can avoid producing micro-crack between jacket core and cap core group core position, and then reduce the casting vein that cylinder body is produced.
Description
Technical field
The present invention relates to casting technique and equipment technical field, more specifically to a kind of Engine cylinder body sand core and
Its core assembly method.
Background technology
Core is, by cold core sand good with mixed with resin in advance, or the hot core sand that producer prepares, to pass through air pressure
Sand is penetrated in die cavity, solidified forming (cold core) under catalyst action, or at 280 degree or so solidified formings (hot core).No matter it is cold
Core, hot core, core is all the resin film connection leaned between sand grains.Core is in casting pouring, process of setting, the tree of sand grain surface
Fat is by thermal softening.At this moment, if stress, the resin film connected between sand grains will be broken, and core produces micro-crack, so that
Casting vein defect is formed, when serious, other defects are also resulted in, such as core is damaged, sand holes defect.
For engine cylinder-body, the vein in vein, particularly water-jacket space, vein is difficult to clean up after being formed, Qing Zheying
The cleannes of Xiangshui County's mantle cavity, severe one blocks cooling water channel, so as to cause engine " burning cylinder ", " scuffing of cylinder bore ", can be to the property of engine
Fatal consequence can be produced.When occurring vein in air flue, air flue vortex characteristic can be influenceed, so that complete machine service behaviour is influenceed,
So cylinder body is not allow for vein presence.
In summary, the casting vein of cylinder body generation how is reduced, is current those skilled in the art skill urgently to be resolved hurrily
Art problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of core assembly method of Engine cylinder body sand core, to reduce cylinder body
The casting vein of generation.
Another object of the present invention is to provide a kind of Engine cylinder body sand core, to reduce the casting vein of cylinder body generation.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of core assembly method of Engine cylinder body sand core, including step：Make to set gap between jacket core and cap core.
It is preferred that, in above-mentioned core assembly method, the gap between the jacket core and the cap core is 0.2-0.5mm.
It is preferred that, in above-mentioned core assembly method, in addition to step：Make between oil duct core and the jacket core and the cap core
It is provided with gap.
It is preferred that, in above-mentioned core assembly method, the gap between the oil duct core and the jacket core and the cap core is
0.2-0.5mm。
It can be seen from above-mentioned technical scheme that, the core assembly method for the Engine cylinder body sand core that the present invention is provided includes step
Suddenly：Make to set gap between jacket core and cap core.
The present invention sets certain gap between the group core position of jacket core and cap core, allows after jacket core and cap core group core
There are certain free degree, noresidue stress；So that jacket core is under casting, the condition of high temperature of process of setting, during expanded by heating
There is certain yielding space, can avoid producing micro-crack between jacket core and cap core group core position, and then reduce cylinder body generation
Casting vein.
Present invention also offers a kind of Engine cylinder body sand core, including jacket core and cap core, the jacket core and the cap
Gap is provided between core.
It is preferred that, in above-mentioned Engine cylinder body sand core, the jacket core is coordinated by connecting core print with the cap core, described
It is 0.2-0.5mm to connect the gap between core print and the cap core.
It is preferred that, in above-mentioned Engine cylinder body sand core, the oil duct core of the cylinder body core and the jacket core and described
Gap is provided between cap core.
It is preferred that, in above-mentioned Engine cylinder body sand core, between the oil duct core and the jacket core and the cap core
Gap is 0.2-0.5mm.
It can be seen from above-mentioned technical scheme that, the Engine cylinder body sand core that the present invention is provided includes jacket core and cap core,
Gap is provided between jacket core and cap core.
The present invention sets certain gap between the group core position of jacket core and cap core, allows after jacket core and cap core group core
There are certain free degree, noresidue stress；So that jacket core is under casting, the condition of high temperature of process of setting, during expanded by heating
There is certain yielding space, can avoid producing micro-crack between jacket core and cap core group core position, and then reduce cylinder body generation
Casting vein.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of Engine cylinder body sand core provided in an embodiment of the present invention；
Fig. 2 is the sectional view of the line A-A along along Fig. 1；
Fig. 3 is the sectional view of the line B-B along along Fig. 1.
Embodiment
The embodiments of the invention provide a kind of core assembly method of Engine cylinder body sand core, the casting arteries and veins of cylinder body generation is reduced
Line.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The core assembly method of Engine cylinder body sand core provided in an embodiment of the present invention includes step：Make jacket core 2 and cap core 1 it
Between gap is set.
The present invention sets certain gap between the group core position of jacket core 2 and cap core 1, allows 1 group of jacket core 2 and cap core
There are certain free degree, noresidue stress after core；So that jacket core 2 is under casting, the condition of high temperature of process of setting, it is heated swollen
There is certain yielding space when swollen, can avoid producing micro-crack between 1 group of core position of jacket core 2 and cap core, and then reduce cylinder
The casting vein that body is produced.
And the present invention is by designing the unstressed core assembling technology between core, in the situation that other technological measures are constant
Under, kind and mesh number if do not changed core sand are not specifically added anti-vein agent, when pouring temperature is constant, by the invention,
Ensure that engine cylinder-body does not produce vein；Avoid using expensive high intensity, low-expansion core sand and anti-vein agent, protect
Core accurate positioning and casting complete casting will not produce vein during card group core.The present invention is applied to solve by controlling core sand
Mesh number, pouring temperature adds the indeterminable vein defects of original technological measure such as anti-vein agent.
In addition, the present invention is in casting process, the reduction of other defect, such as core are damaged, the generation of sand holes, it can also play certain
Effect.
It is preferred that, the gap between jacket core 2 and cap core 1 is 0.2-0.5mm.Carry out mold design when, jacket core 2 with
The gap that cap core 1 coordinates, acts on according to positioning and non-locating, is respectively set as 0.2mm and 0.5mm, makes the fragile position in guarantor
On the premise of demonstrate,proving accurate positioning, keep certain free degree, sand grains at high temperature, phase change expansion, but will not be broken at this,
Therefore vein will not also be formed.Certainly, according to practical application, above-mentioned gap can also be other values, such as 0.3mm, 0.6mm
Deng.
In order to further optimize above-mentioned technical proposal, core assembly method also includes step：Make oil duct core and jacket core 2 and cap
Gap is provided between core 1.The present invention is provided with gap between oil duct core and jacket core 2 and cap core 1, allows oil duct core
With having certain free degree, noresidue stress after 1 group of core of jacket core 2 and cap core；So that oil duct core is in casting, process of setting
The condition of high temperature under, have certain yielding space during expanded by heating, oil duct core and jacket core 2,1 group of core position of cap core can be avoided
Between produce micro-crack, and then reduce the casting vein that cylinder body is produced.
It is preferred that, the gap between oil duct core and jacket core 2 and cap core 1 is 0.2-0.5mm.Carrying out mold design
When, the gap between oil duct core and jacket core 2, oil duct core and cap core 1 acts on according to positioning and non-locating, is respectively set as
0.2mm and 0.5mm, makes the fragile position on the premise of accurate positioning is ensured, keeps certain free degree, sand grains is in high temperature
Under, phase change expansion, but will not be broken at this, therefore will not also form vein.Certainly, it is above-mentioned according to practical application
Gap can also be other values, such as 0.3mm, 0.6mm.
As Figure 1-3, the embodiment of the present invention additionally provides a kind of Engine cylinder body sand core, including jacket core 2 and cap core
1, it is provided with gap between jacket core 2 and cap core 1.
The present invention sets certain gap between the group core position of jacket core 2 and cap core 1, allows 1 group of jacket core 2 and cap core
There are certain free degree, noresidue stress after core；So that jacket core 2 is under casting, the condition of high temperature of process of setting, it is heated swollen
There is certain yielding space when swollen, can avoid producing micro-crack between 1 group of core position of jacket core 2 and cap core, and then reduce cylinder
The casting vein that body is produced.
And the present invention is using unstressed group of core between core, in the case where other technological measures are constant, if do not changed
The kind and mesh number of core sand, anti-vein agent is not specifically added, when pouring temperature is constant, passes through the invention, it is ensured that start
Machine cylinder body does not produce vein；Avoid using expensive high intensity, low-expansion core sand and anti-vein agent, it is ensured that during group core
Core accurate positioning and casting complete casting will not produce vein.The present invention is applied to solve by controlling core sand mesh number, pours
Temperature is noted, the indeterminable vein defects of original technological measure such as anti-vein agent are added.
In addition, the present invention is in casting process, the reduction of other defect, such as core are damaged, the generation of sand holes, it can also play certain
Effect.
It is preferred that, jacket core 2 is coordinated by connecting core print 21 with cap core 1, and the gap between connection core print 21 and cap core 1 is
0.2-0.5mm.Between the present invention realizes that the group core of jacket core 2 and cap core 1, jacket core 2 and cap core 1 coordinate by connecting core print 21
Gap, acts on according to positioning and non-locating, is respectively set as 0.2mm and 0.5mm, makes the fragile position before accurate positioning is ensured
Put, keep certain free degree, sand grains at high temperature, phase change expansion, but will not be broken at this, therefore will not also be formed
Vein.Certainly, according to practical application, above-mentioned gap can also be other values, such as 0.3mm, 0.6mm.
In order to further optimize above-mentioned technical proposal, it is all provided between the oil duct core and jacket core 2 and cap core 1 of cylinder body core
It is equipped with gap.The present invention is provided with gap between oil duct core and jacket core 2 and cap core 1, allow oil duct core and jacket core 2 with
And have certain free degree, noresidue stress after 1 group of core of cap core；So that oil duct core is in casting, the condition of high temperature of process of setting
Under, there is certain yielding space during expanded by heating, can avoid producing between oil duct core and jacket core 2,1 group of core position of cap core micro-
Crackle, and then reduce the casting vein that cylinder body is produced.
It is preferred that, in above-mentioned Engine cylinder body sand core, the gap between oil duct core and jacket core 2 and cap core 1 is 0.2-
0.5mm.Gap between oil duct core and jacket core 2, oil duct core and cap core 1, acts on according to positioning and non-locating, is respectively set as
0.2mm and 0.5mm, makes the fragile position on the premise of accurate positioning is ensured, keeps certain free degree, sand grains is in high temperature
Under, phase change expansion, but will not be broken at this, therefore will not also form vein.Certainly, it is above-mentioned according to practical application
Gap can also be other values, such as 0.3mm, 0.6mm.
The present invention is suitable for solution cylinder body water jacket core 2, the vein defect problem that the non-sand grains of the core such as oil duct core is caused in itself,
The generation of cylinder body vein can be reduced, particular for water jacket, the generation of air flue vein, there is preferable effect.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
1. a kind of core assembly method of Engine cylinder body sand core, it is characterised in that including step：Make jacket core (2) and cap core (1) it
Between gap is set.
2. core assembly method according to claim 1, it is characterised in that between the jacket core (2) and the cap core (1)
Gap is 0.2-0.5mm.
3. core assembly method according to claim 1, it is characterised in that also including step：Make oil duct core and the jacket core
(2) and between the cap core (1) it is provided with gap.
4. core assembly method according to claim 3, it is characterised in that the oil duct core and the jacket core (2) and institute
It is 0.2-0.5mm to state the gap between cap core (1).
5. a kind of Engine cylinder body sand core, including jacket core (2) and cap core (1), it is characterised in that the jacket core (2) and institute
State and be provided with gap between cap core (1).
6. Engine cylinder body sand core according to claim 5, it is characterised in that the jacket core (2) is by connecting core print
(21) coordinate with the cap core (1), the gap between the connection core print (21) and the cap core (1) is 0.2-0.5mm.
7. Engine cylinder body sand core according to claim 5, it is characterised in that the oil duct core of the cylinder body core with it is described
Gap is provided between jacket core (2) and the cap core (1).
8. Engine cylinder body sand core according to claim 7, it is characterised in that the oil duct core and the jacket core (2)
And the gap between the cap core (1) is 0.2-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184203.4A CN107052257A (en) | 2017-03-24 | 2017-03-24 | Engine cylinder body sand core and its core assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184203.4A CN107052257A (en) | 2017-03-24 | 2017-03-24 | Engine cylinder body sand core and its core assembly method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107052257A true CN107052257A (en) | 2017-08-18 |
Family
ID=59618109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710184203.4A Pending CN107052257A (en) | 2017-03-24 | 2017-03-24 | Engine cylinder body sand core and its core assembly method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107052257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109290522A (en) * | 2018-10-23 | 2019-02-01 | 合肥江淮铸造有限责任公司 | A kind of back oil road sand core of engine cylinder body casting |
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| CN2860676Y (en) * | 2005-12-31 | 2007-01-24 | 广西玉柴机器股份有限公司 | Water channel core of engine cylinder cap |
| CN101844200A (en) * | 2010-05-17 | 2010-09-29 | 合肥江淮铸造有限责任公司 | Method for preventing coating from adhering to core support surface of water jacket core for casting |
| CN104907499A (en) * | 2015-04-24 | 2015-09-16 | 辽宁福鞍重工股份有限公司 | Heavy type gas turbine compressor exhaust cylinder casting process |
| CN204912668U (en) * | 2015-08-22 | 2015-12-30 | 江铃汽车股份有限公司 | Cast iron cylinder body water jacket psammitolite structure |
| CN105855473A (en) * | 2016-05-27 | 2016-08-17 | 江铃汽车股份有限公司 | Engine cylinder block core-assembly process, engine cylinder block sand core and sand core set |
| CN205551399U (en) * | 2016-02-23 | 2016-09-07 | 合肥江淮铸造有限责任公司 | Prevent psammitolite expansion deformation's sand mould structure |
| WO2016194031A1 (en) * | 2015-05-29 | 2016-12-08 | 日産自動車株式会社 | Device for casting cylinder head and method for casting cylinder head |
| CN206732063U (en) * | 2017-03-24 | 2017-12-12 | 江铃汽车股份有限公司 | Engine cylinder body sand core |
-
2017
- 2017-03-24 CN CN201710184203.4A patent/CN107052257A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2860676Y (en) * | 2005-12-31 | 2007-01-24 | 广西玉柴机器股份有限公司 | Water channel core of engine cylinder cap |
| CN101844200A (en) * | 2010-05-17 | 2010-09-29 | 合肥江淮铸造有限责任公司 | Method for preventing coating from adhering to core support surface of water jacket core for casting |
| CN104907499A (en) * | 2015-04-24 | 2015-09-16 | 辽宁福鞍重工股份有限公司 | Heavy type gas turbine compressor exhaust cylinder casting process |
| WO2016194031A1 (en) * | 2015-05-29 | 2016-12-08 | 日産自動車株式会社 | Device for casting cylinder head and method for casting cylinder head |
| CN204912668U (en) * | 2015-08-22 | 2015-12-30 | 江铃汽车股份有限公司 | Cast iron cylinder body water jacket psammitolite structure |
| CN205551399U (en) * | 2016-02-23 | 2016-09-07 | 合肥江淮铸造有限责任公司 | Prevent psammitolite expansion deformation's sand mould structure |
| CN105855473A (en) * | 2016-05-27 | 2016-08-17 | 江铃汽车股份有限公司 | Engine cylinder block core-assembly process, engine cylinder block sand core and sand core set |
| CN206732063U (en) * | 2017-03-24 | 2017-12-12 | 江铃汽车股份有限公司 | Engine cylinder body sand core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109290522A (en) * | 2018-10-23 | 2019-02-01 | 合肥江淮铸造有限责任公司 | A kind of back oil road sand core of engine cylinder body casting |
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| PB01 | Publication | ||
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Application publication date: 20170818 |