CN101879576A - Manufacturing method of core filler for investment casting - Google Patents
Manufacturing method of core filler for investment casting Download PDFInfo
- Publication number
- CN101879576A CN101879576A CN 201010220473 CN201010220473A CN101879576A CN 101879576 A CN101879576 A CN 101879576A CN 201010220473 CN201010220473 CN 201010220473 CN 201010220473 A CN201010220473 A CN 201010220473A CN 101879576 A CN101879576 A CN 101879576A
- Authority
- CN
- China
- Prior art keywords
- core
- investment casting
- filler
- sand
- manufacturing
- 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
- 239000000945 filler Substances 0.000 title claims abstract description 13
- 238000005495 investment casting Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 11
- 239000004576 sand Substances 0.000 abstract description 8
- 239000006004 Quartz sand Substances 0.000 abstract description 3
- 239000004615 ingredient Substances 0.000 abstract 2
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a manufacturing method of core filler for investment casting, comprising the folloing steps: selecting chrome ore and sodium silicate as the ingredient at the ratio of 10:1, and fully stirring the ingredient. Because the invention adopts the technical scheme, after the chrome ore filler is hardened in the hole or groove of the core, the strength and the high-temperature strength of the core exceed those of the quartz sand and sagger sand. The surfaces of the ostiole, longhole and narrow groove are gloss and easy to remove the sand during finishing, and the ostiole has small possibility of deforming.
Description
Technical field
The present invention relates to a kind of preparation method of core filler for investment casting.
Background technology
Casting the time need be made ceramic core and finishes aperture in the foundry goods, deep hole, narrow groove and make in most hot investment casting industries at present, and especially to hole on the thick-walled casting and groove, when dimension precision requirement was higher, groove, hole forming became the problem that must pay attention to.Originally molten steel was all worn in the inside, product hole of working it out according to common process, and scrappage is very high, promptly enables the product of moulding, and the surface smoothness of the inside, hole can't reach client's approval, middle part, hole depression.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of core filler for investment casting, makes that the surface of aperture in the foundry goods, deep hole, narrow groove is not only bright and clean, and sand removal is easy when the arrangement of back.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the preparation method of core filler for investment casting, according to quality percentage composition proportioning: chrome ore: sodium silicate=choose batching at 10: 1 stirs above-mentioned batching.
Described sodium silicate density is 1.35g/cm
3
The present invention is owing to adopted technique scheme, and after the chrome ore filler hardened in the hole of filling in core or groove, the intensity of core and elevated temperature strength surpassed quartz sand and saggar sand.The surface of aperture, deep hole, narrow groove is not only bright and clean in the foundry goods, and sand removal is easy when the arrangement of back, and aperture is indeformable.
The specific embodiment
The preparation method of core filler for investment casting of the present invention, according to quality percentage composition proportioning: chrome ore: sodium silicate=choose batching at 10: 1 stirs above-mentioned batching.Described sodium silicate density is 1.35g/cm
3
The present invention adopts chrome ore in the sand casting as filler, fills in aperture, deep hole, the narrow groove of core in core manufacturing process, fills up the position that can't go up sand in aperture, deep hole, the narrow groove.After the chrome ore filler hardened in the hole of filling in core or groove, the intensity of core and elevated temperature strength surpassed quartz sand and saggar sand.Orifice surface is not only bright and clean in the foundry goods, and sand removal is easy when the arrangement of back, and aperture is indeformable.
Claims (2)
1. the preparation method of core filler for investment casting is characterized in that: according to quality percentage composition proportioning: chrome ore: sodium silicate=choose batching at 10: 1 stirs above-mentioned batching.
2. according to the preparation method of the described core filler for investment casting of claim 1, it is characterized in that: described sodium silicate density is 1.35g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010220473 CN101879576A (en) | 2010-06-30 | 2010-06-30 | Manufacturing method of core filler for investment casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010220473 CN101879576A (en) | 2010-06-30 | 2010-06-30 | Manufacturing method of core filler for investment casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101879576A true CN101879576A (en) | 2010-11-10 |
Family
ID=43051785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010220473 Pending CN101879576A (en) | 2010-06-30 | 2010-06-30 | Manufacturing method of core filler for investment casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101879576A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104949A (en) * | 1986-07-28 | 1987-02-04 | 机械工业部沈阳铸造研究所 | Casting type (core) sand compound |
| CN1583324A (en) * | 2004-06-04 | 2005-02-23 | 中国科学院金属研究所 | High manganese steel railway assembled frog centre rail casting process |
| CN101125354A (en) * | 2007-09-06 | 2008-02-20 | 甘肃省永靖昌盛铸钢有限责任公司 | Composite sand mould material for producing stainless steel casting and method for casting stainless steel casting |
-
2010
- 2010-06-30 CN CN 201010220473 patent/CN101879576A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104949A (en) * | 1986-07-28 | 1987-02-04 | 机械工业部沈阳铸造研究所 | Casting type (core) sand compound |
| CN1583324A (en) * | 2004-06-04 | 2005-02-23 | 中国科学院金属研究所 | High manganese steel railway assembled frog centre rail casting process |
| CN101125354A (en) * | 2007-09-06 | 2008-02-20 | 甘肃省永靖昌盛铸钢有限责任公司 | Composite sand mould material for producing stainless steel casting and method for casting stainless steel casting |
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Legal Events
| 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: 20101110 |