CN105414489A - Gapless combination technology of sand core - Google Patents
Gapless combination technology of sand core Download PDFInfo
- Publication number
- CN105414489A CN105414489A CN201511019463.3A CN201511019463A CN105414489A CN 105414489 A CN105414489 A CN 105414489A CN 201511019463 A CN201511019463 A CN 201511019463A CN 105414489 A CN105414489 A CN 105414489A
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- CN
- China
- Prior art keywords
- core
- local
- sand
- casting
- gapless
- 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.)
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a gapless combination technology of sand core. The technology comprises the following steps: at first, individually manufacturing local sand cores of complicated positions of partial structure of a mould, and making the local sand cores into a dovetail groove shape; secondly, placing the moulded local sand cores into a prepared metal mould, carrying out sand core secondary moulding; and taking out the moulded sand core from the metal mould so as to form an integral external sand core without gaps in the inner. In the prior art, due to the loose local positions of sand core and unsaturated shooting, the defects such as sand adhesion, sand hole, and the like are formed on the surface of casting. The provided technology can overcome the defects mentioned above and reduce the potential quality hazard of casting. At the same time, the burrs, which affect the appearance of casting, are on the surface of casting, and are formed due to the gaps, which are formed during the process of combination of sand core, are eliminated, the workload for cleaning the casting is reduced, and the labor strength is reduced.
Description
Technical field
The present invention relates to casting sand core field, particularly a kind of gapless group technology of core.
Background technology
At present, in foundry enterprise is produced, the core moulding process scheme generally used has two kinds: one, be directly produce complete core with mould, in the process that core is shaping, mould local complicated position easily occur loose, penetrate not full phenomenon, on foundry goods, easily form the defect of scab, sand holes, cause a hidden trouble to casting quality.Two, be go out local core with Mold Making, and then form complete core by core assembly, in the process of core combination, can there is gap between core and core, after moulding by casting, cast(ing) surface forms burr, affects the visual quality of casting.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of gapless group technology of core of simple and reasonable steps, the gapless group technology of this core utilizes and carries out independent making core to the complicated position of mould partial structurtes, and core is made as dove tail shape, so that when core post forming, two cores can form an entirety, and shaping core is put into unitary mould carry out the integral sand core that core post forming forms an inner gapless combination, core surface zero defect after combination, prosthetic combinational gap, solve cast(ing) surface because of core local location loose, penetrate not full and form scab, the defect of sand holes, decrease the hidden danger of quality of foundry goods.Solve the burr that cast(ing) surface is formed because of the gap in core anabolic process, affect the visual quality of casting.Reduce the workload of casting cleaning, reduce labour intensity.
For achieving the above object, according to the gapless group technology that the invention provides a kind of core, comprise the following steps: first, local core is produced separately to the complicated position of mould partial structurtes, and local core is made into dove tail shape; Secondly, shaping local core is put into ready metal die and carries out core post forming; After molding is carried out to the core after shaping, form the integral outer core of an inner gapless combination.
Preferably, in technique scheme, the periphery of local core has back draught.
Preferably, in technique scheme, after making complete local core taking-up, unification is deposited.
Preferably, in technique scheme, metal die uses front cleaning agent to clean up, and evenly sprays releasing agent.
Compared with prior art, the present invention has following beneficial effect: the gapless group technology of this core utilizes and carries out independent making core to the complicated position of mould partial structurtes, and core is made as dove tail shape, so that when core post forming, two cores can form an entirety, and shaping core is put into unitary mould carry out the integral sand core that core post forming forms an inner gapless combination, core surface zero defect after combination, prosthetic combinational gap, solve cast(ing) surface because of core local location loose, penetrate not full and form scab, the defect of sand holes, decrease the hidden danger of quality of foundry goods.Solve the burr that cast(ing) surface is formed because of the gap in core anabolic process, affect the visual quality of casting.Reduce the workload of casting cleaning, reduce labour intensity.
Accompanying drawing explanation
Fig. 1 is the flow chart of the gapless group technology of core of the present invention.
Fig. 2 is the structural representation of the gapless group technology of core of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of detailed description of the invention.
Clearly represent unless otherwise other, otherwise in whole description and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1, the gapless group technology of this core utilizes and carries out independent making core to the complicated position of mould partial structurtes, and core is made as dove tail shape, so that when core post forming, two cores can form an entirety, easy molding, afterwards, shaping core is put into unitary mould and carries out core post forming, then molding, form the integral sand core of an inner gapless combination, now, core surface zero defect after combination, prosthetic combinational gap, can not cause a hidden trouble to casting quality.
As shown in Figure 1, the concrete steps of the gapless group technology of this core comprise:
First, local core 2 is produced separately to the complicated position of mould partial structurtes, and local core 2 is made into dove tail shape;
As shown in Figure 2, local core 2 is dove tail shape, namely the periphery of local core 2 has back draught, make shaping core put into unitary mould and carry out the integral sand core that core post forming forms an inner gapless combination, now, the core surface zero defect after combination, prosthetic combinational gap, solve cast(ing) surface forms scab, sand holes defect because core local location is loose, it is not full to penetrate, decrease the hidden danger of quality of foundry goods.
Secondly, the complete local core 2 of making is taken out, and unification is deposited, and deposits in process and notes core shelf-life and distortion;
Then, metal die 3 is maintained, cleans up with cleaning agent, evenly spray releasing agent, with to be used;
Then, shaping local core 2 is put into ready metal die 3 and carry out core post forming; After molding is carried out to the core after shaping, just form the integral outer core 1 of an inner gapless combination, now, the core surface zero defect after combination, prosthetic combinational gap.
To sum up, the gapless group technology of this core utilizes and carries out independent making core to the complicated position of mould partial structurtes, and core is made as dove tail shape, so that when core post forming, two cores can form an entirety, and shaping core is put into unitary mould carry out the integral sand core that core post forming forms an inner gapless combination, core surface zero defect after combination, prosthetic combinational gap, solve cast(ing) surface because of core local location loose, penetrate not full and form scab, the defect of sand holes, decrease the hidden danger of quality of foundry goods.Solve the burr that cast(ing) surface is formed because of the gap in core anabolic process, affect the visual quality of casting.Reduce the workload of casting cleaning, reduce labour intensity.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (4)
1. a gapless group technology for core, is characterized in that, comprise the following steps:
First, local core is produced separately to the complicated position of mould partial structurtes, and local core is made into dove tail shape;
Secondly, shaping local core is put into ready metal die and carries out core post forming; After molding is carried out to the core after shaping, form the integral outer core of an inner gapless combination.
2. the gapless group technology of core according to claim 1, is characterized in that, the periphery of described local core has back draught.
3. the gapless group technology of core according to claim 1, is characterized in that, after the local core taking-up that described making is complete, unification is deposited.
4. the gapless group technology of core according to claim 1, is characterized in that, described metal die uses front cleaning agent to clean up, and evenly sprays releasing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019463.3A CN105414489A (en) | 2015-12-30 | 2015-12-30 | Gapless combination technology of sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019463.3A CN105414489A (en) | 2015-12-30 | 2015-12-30 | Gapless combination technology of sand core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105414489A true CN105414489A (en) | 2016-03-23 |
Family
ID=55493273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511019463.3A Pending CN105414489A (en) | 2015-12-30 | 2015-12-30 | Gapless combination technology of sand core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105414489A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480701A (en) * | 2008-12-04 | 2009-07-15 | 苏州明志科技有限公司 | Cold-hot combined mold core forming process |
| US20130341822A1 (en) * | 2010-02-25 | 2013-12-26 | Daniel Ellgass | Turbine component casting core with high resolution region |
| CN203495135U (en) * | 2013-10-16 | 2014-03-26 | 四川省祥业机械铸造有限公司 | Sand core mould structure of engine cylinder block |
| CN104043782A (en) * | 2014-05-22 | 2014-09-17 | 龙工（福建）铸锻有限公司 | Method for manufacturing sand core used for excavator valve body oil duct through multiple sand-shooting |
-
2015
- 2015-12-30 CN CN201511019463.3A patent/CN105414489A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480701A (en) * | 2008-12-04 | 2009-07-15 | 苏州明志科技有限公司 | Cold-hot combined mold core forming process |
| US20130341822A1 (en) * | 2010-02-25 | 2013-12-26 | Daniel Ellgass | Turbine component casting core with high resolution region |
| CN203495135U (en) * | 2013-10-16 | 2014-03-26 | 四川省祥业机械铸造有限公司 | Sand core mould structure of engine cylinder block |
| CN104043782A (en) * | 2014-05-22 | 2014-09-17 | 龙工（福建）铸锻有限公司 | Method for manufacturing sand core used for excavator valve body oil duct through multiple sand-shooting |
Non-Patent Citations (1)
| Title |
|---|
| 毛进学: "《端盖复杂砂芯组合技术的研究》", 《铸造设备与工艺》 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |