CN101486074A - Lost core making method - Google Patents
Lost core making method Download PDFInfo
- Publication number
- CN101486074A CN101486074A CN 200810136427 CN200810136427A CN101486074A CN 101486074 A CN101486074 A CN 101486074A CN 200810136427 CN200810136427 CN 200810136427 CN 200810136427 A CN200810136427 A CN 200810136427A CN 101486074 A CN101486074 A CN 101486074A
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- CN
- China
- Prior art keywords
- core
- sand
- sand core
- box
- making
- 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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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 230000008034 disappearance Effects 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 5
- 238000005187 foaming Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a lost core making method for making a sand core with a complex shape, which comprises the following steps: preparing a low-melting-point material into a sand core filler block by adopting a foaming process according to the shape of a casting to be processed; placing the sand core filling block in a core making mold and fixing the sand core filling block and the mold, thereby forming a core making core box; filling sand in the core box by adopting a cold-box core making process, and taking out the sand core and a sand core filling block connected with the sand core from the core box after the core sand is solidified; and baking the sand core and the sand core filler blocks, and burning out the filler blocks to obtain the sand core. Because the sand core with the complex shape is integrally formed, the casting processed by the sand core has stable size, high precision, light weight and high quality.
Description
Technical field
The present invention relates to a kind of core manufacturing craft, be specifically related to a kind of disappearance core production method.
Background technology
In the prior art, the inner core that forms complex-shaped foundry goods is because the particularity of shape, and die for making core is difficult to one and makes, so inner core needs to be connected to form behind the split production, and the dimensional stability of the foundry goods that processes like this is lower.
Summary of the invention
The purpose of this invention is to provide a kind of disappearance core production method that integral production goes out complex-shaped core that is used for.
For achieving the above object, the technical solution used in the present invention is: a kind of disappearance core production method, be used to make complex-shaped core, and comprise following operation:
(1) shape according to foundry goods to be processed adopts foam process to make sand core filler block low melting material;
(2) above-mentioned sand core filler block is placed in the die for making core, and fixes, form the coremaking core box thus with mould;
(3) adopt cold core box core process, back-up sand in described core box, core sand solidify finish after, take out core in the described core box and be connected in sand core filler block on the described core;
(4) baking core and sand core filler block will promptly make core after the mistake of filling block burning.
Described low melting material adopts the foamed material of low melting point, high rigidity.
Because the present invention has adopted above technical scheme, its advantage is:, stablize precision height, foundry goods in light weight, quality height because this complex-shaped core is integrally formed by the casting dimension that core processes.
Description of drawings
The core that accompanying drawing 1 is produced for the present invention processes the front view of foundry goods;
Accompanying drawing 2 is for being made the front view of sand core filler block by the shape of foundry goods among the present invention;
Accompanying drawing 3 is connected the front view that forms the coremaking core box on the die for making core for sand core filler block among the present invention.
The specific embodiment
Further set forth process of the present invention below in conjunction with accompanying drawing.
Shown in accompanying drawing 1-3, a kind of disappearance core production method, be used to make complex-shaped core, Fig. 1 has shown a kind of special-shaped core, be used to process lid shape foundry goods with complicated inner cavity structure, the operation of this core production method is as follows: (1) adopts foam process to make identical shaped sand core filler block 2 low melting material according to the cavity shape in the foundry goods to be processed, and wherein low melting material adopts the foamed material of low melting point, high rigidity, as shown in Figure 2; (2) above-mentioned sand core filler block 2 is placed in the die for making core 4, and fixes, form coremaking core box 3 thus, multiple usual ways such as that the stationary positioned of sand core filler block 2 and mould 4 can adopt is bonding, bolting with mould 4; (3) adopt cold core box core process, after finishing back-up sands in the core box 3, core sand on the core shooter and solidifying, in core box 3, eject core 1, be connected with sand core filler block 2 on the core 1 simultaneously; (4) baking core 1 and sand core filler block 2 promptly makes core 1 filling block 2 burnt mistake in oxygen after.Core 1 processing foundry goods by this one makes can improve the foundry goods precision, stablizes casting dimension, reduces the weight of foundry goods, improves casting quality.
Claims (2)
1, a kind of disappearance core production method is used to make complex-shaped core, it is characterized in that: comprise following operation:
(1) shape according to foundry goods to be processed adopts foam process to make sand core filler block (2) low melting material;
(2) above-mentioned sand core filler block (2) is placed in the die for making core, and fixes, form coremaking core box (3) thus with mould;
(3) adopt cold core box core process, back-up sand described core box (3) in after core sand curing is finished, is taken out core (1) in the described core box and is connected in sand core filler block (2) on the described core (1);
(4) baking core (1) and sand core filler block (2) will promptly make core (1) after the mistake of filling block (2) burning.
2, disappearance core production method according to claim 1 is characterized in that: described low melting material adopts the foamed material of low melting point, high rigidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810136427 CN101486074A (en) | 2008-12-05 | 2008-12-05 | Lost core making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810136427 CN101486074A (en) | 2008-12-05 | 2008-12-05 | Lost core making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101486074A true CN101486074A (en) | 2009-07-22 |
Family
ID=40889221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810136427 Pending CN101486074A (en) | 2008-12-05 | 2008-12-05 | Lost core making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101486074A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039372A (en) * | 2011-01-11 | 2011-05-04 | 大连鸿骏源机械有限公司 | Lost foam casting method |
| CN102380582A (en) * | 2011-12-02 | 2012-03-21 | 苏州明志科技有限公司 | Cold core making method |
| CN106334783A (en) * | 2016-08-22 | 2017-01-18 | 北京航星机器制造有限公司 | Graded preparation method of complex resin sand core |
| CN108607957A (en) * | 2018-04-19 | 2018-10-02 | 句容市有色金属铸造厂 | Metal sand mould casting method |
| CN111014587A (en) * | 2020-03-06 | 2020-04-17 | 安徽应流集团霍山铸造有限公司 | Technological method for processing complex sand core by using foam loose piece |
-
2008
- 2008-12-05 CN CN 200810136427 patent/CN101486074A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039372A (en) * | 2011-01-11 | 2011-05-04 | 大连鸿骏源机械有限公司 | Lost foam casting method |
| CN102380582A (en) * | 2011-12-02 | 2012-03-21 | 苏州明志科技有限公司 | Cold core making method |
| CN102380582B (en) * | 2011-12-02 | 2013-10-02 | 苏州明志科技有限公司 | Cold core making method |
| CN106334783A (en) * | 2016-08-22 | 2017-01-18 | 北京航星机器制造有限公司 | Graded preparation method of complex resin sand core |
| CN108607957A (en) * | 2018-04-19 | 2018-10-02 | 句容市有色金属铸造厂 | Metal sand mould casting method |
| CN111014587A (en) * | 2020-03-06 | 2020-04-17 | 安徽应流集团霍山铸造有限公司 | Technological method for processing complex sand core by using foam loose piece |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090722 |