CN102416439A - Foam pattern surface treatment method of ceramic shell lost foam casting - Google Patents
Foam pattern surface treatment method of ceramic shell lost foam casting Download PDFInfo
- Publication number
- CN102416439A CN102416439A CN2010105026048A CN201010502604A CN102416439A CN 102416439 A CN102416439 A CN 102416439A CN 2010105026048 A CN2010105026048 A CN 2010105026048A CN 201010502604 A CN201010502604 A CN 201010502604A CN 102416439 A CN102416439 A CN 102416439A
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- China
- Prior art keywords
- foam
- casting
- foam pattern
- ceramic shell
- pattern surface
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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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Abstract
The invention discloses a foam pattern surface treatment method of ceramic shell lost foam casting. The method is mainly characterized by comprising the following steps of: coating liquid paraffin on the surface of a foam pattern; insulating at 60-80 DEG C so that the paraffin on the surface forms a uniform coating with relatively high glossiness; and performing a series of known ceramic shell lost foam casting processes such as tree grouping, shell making, shell mould roasting, pouring and the like to obtain a casting with relatively high surface quality.
Description
Affiliated technical field
The invention belongs to a kind of Foam Pattern surface treatment method in the ceramic shell lost foam casting process, be used to improve mo(u)lded piece surface quality and dimensional accuracy.
Background technology
The tradition lost foam casting process buries sand jolt ramming through drying after adopting Foam Pattern directly to apply lost foam paint, takes out vacuum-assist pouring, and its surface roughness are generally Ra12.5 μ m～Ra50 μ m.
A kind of new casting method that combines lost foam casting technology and melted module precise casting technology characteristics has been proposed in the patent 200810007693.1 " a kind of precision casting technique of ceramic shell lost foam "; This patent applies the known precision-investment casting silicasol case of several layers with the Foam Pattern outside; After roasting; With the ceramic shell landfill sandbox of hollow, cast molten steel under the subnormal ambient obtains foundry goods around shell.
Be used for the precision casting that the production surface quality is had relatively high expectations, the deficiency of this technology is to use the foamed plastics raw material and the former of external import expensive price, and manufacturing cost is higher than investment pattern precision casting technology far away.Adopt homemade material and facility to prepare Foam Pattern, there is the slit of microcosmic in the apperance surface, oozes the small embossment that forms netted dense distribution in the coating during system shell, makes the surface quality of continuous castings of moulding by casting can't reach the level of investment casting.The casting of ceramic shell evaporative pattern precise will replace precision-investment casting, realizes large-scale application, must solve the not high problem of Foam Pattern surface quality.
Summary of the invention
The purpose of this invention is to provide a kind of Foam Pattern surface light clean processing method.Foam Pattern at first in its surface-coated one deck olefin film, is produced the surface quality and the dimensional accuracy of foundry goods to improve the ceramic shell lost foam casting process before making ceramic shell.
Technical scheme of the present invention is:
1, melt drop temperature is lower than 85 ℃ heating paraffin and is fused into liquid, and in subsequent implementation, keep the liquid constant temperature of paraffin;
2, with the paraffin liquid dip-coating or spray to the Foam Pattern surface, form the layer of smooth film, film thickness monitoring is 0.05mm～0.3mm;
3, the whole Foam Pattern time of filming is controlled to be 3s～20S, and cere descends operation system shell after solidifying.
The invention has the beneficial effects as follows, improved the Foam Pattern surface quality, surface roughness can be suitable with the investment pattern precision casting wax-pattern, and treatment effeciency is high, is suitable for producing in enormous quantities operation.
The specific embodiment
The present invention's " ceramic shell lost foam casting Foam Pattern surface treatment method " specific embodiments is following:
1, wax liquid preparation: melt drop temperature is lower than 85 ℃ paraffin puts into cold wall tank and heat, be incubated after being molten into liquid, keep paraffin liquid.
2, drying is good Foam Pattern immerses in the wax liquid, proposes behind immersion 3～20S; Or directly wax liquid evenly is sprayed on the Foam Pattern surface.
3, the apperance of Wax-coated liquid is delivered in the incubator (60～80 ℃) leaves standstill, treat that the apperance surface forms the thick lubricious back of 0.05mm～0.3mm and takes out, room temperature is dried;
3, dry good apperance through after the assay was approved, it is mail to the assembling of group tree operation group tree.
Claims (1)
1. Foam Pattern surface treatment method in the ceramic shell lost foam casting process is characterized in that:
(1) is lower than 85 ℃ paraffin in Foam Pattern surface-coated one deck melt drop temperature;
(2) method that applies comprises soaks Foam Pattern wax liquid 3～20S and directly sprays wax liquid on the Foam Pattern surface;
(3) the Foam Pattern paraffin coating is handled through 60 ℃～80 ℃ insulations, and room temperature is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105026048A CN102416439A (en) | 2010-09-26 | 2010-09-26 | Foam pattern surface treatment method of ceramic shell lost foam casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105026048A CN102416439A (en) | 2010-09-26 | 2010-09-26 | Foam pattern surface treatment method of ceramic shell lost foam casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102416439A true CN102416439A (en) | 2012-04-18 |
Family
ID=45941229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105026048A Pending CN102416439A (en) | 2010-09-26 | 2010-09-26 | Foam pattern surface treatment method of ceramic shell lost foam casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102416439A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672104A (en) * | 2012-05-29 | 2012-09-19 | 刘翔 | Precision casting method for pouring evanescent mold through high-performance coating foam and mold laminating paraffin |
| CN103170579A (en) * | 2013-04-18 | 2013-06-26 | 李玉忠 | Stainless steel water meter shell and machining method thereof |
| CN106493298A (en) * | 2016-12-14 | 2017-03-15 | 江苏钜源机械有限公司 | A kind of process for improving lost foam casting Part Surface Roughness |
| CN107309389A (en) * | 2017-08-21 | 2017-11-03 | 安徽省含山县兴建铸造厂 | A kind of die treatment method for lifting damper casting property |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3880790A (en) * | 1973-05-14 | 1975-04-29 | Petrolite Corp | Investment casting wax composition |
| US4978452A (en) * | 1989-05-15 | 1990-12-18 | Alusuisse-Lonza Services Ltd. | Method for producing wax impregnated filters for investment casting applications |
| EP0459486A2 (en) * | 1990-05-30 | 1991-12-04 | Nkk Corporation | Pattern for manufacturing mold |
| CN1756607A (en) * | 2003-03-05 | 2006-04-05 | 石川岛播磨重工业株式会社 | Method for manufacturing mold |
| CN101462151A (en) * | 2009-01-16 | 2009-06-24 | 哈尔滨工业大学 | Method for preparing TiAl-based alloy formwork by precision-investment casting |
| CN101642797A (en) * | 2009-09-01 | 2010-02-10 | 郑宝安 | Mending paste special for lost foam casting |
-
2010
- 2010-09-26 CN CN2010105026048A patent/CN102416439A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3880790A (en) * | 1973-05-14 | 1975-04-29 | Petrolite Corp | Investment casting wax composition |
| US4978452A (en) * | 1989-05-15 | 1990-12-18 | Alusuisse-Lonza Services Ltd. | Method for producing wax impregnated filters for investment casting applications |
| EP0459486A2 (en) * | 1990-05-30 | 1991-12-04 | Nkk Corporation | Pattern for manufacturing mold |
| CN1756607A (en) * | 2003-03-05 | 2006-04-05 | 石川岛播磨重工业株式会社 | Method for manufacturing mold |
| CN101462151A (en) * | 2009-01-16 | 2009-06-24 | 哈尔滨工业大学 | Method for preparing TiAl-based alloy formwork by precision-investment casting |
| CN101642797A (en) * | 2009-09-01 | 2010-02-10 | 郑宝安 | Mending paste special for lost foam casting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672104A (en) * | 2012-05-29 | 2012-09-19 | 刘翔 | Precision casting method for pouring evanescent mold through high-performance coating foam and mold laminating paraffin |
| CN103170579A (en) * | 2013-04-18 | 2013-06-26 | 李玉忠 | Stainless steel water meter shell and machining method thereof |
| CN106493298A (en) * | 2016-12-14 | 2017-03-15 | 江苏钜源机械有限公司 | A kind of process for improving lost foam casting Part Surface Roughness |
| CN107309389A (en) * | 2017-08-21 | 2017-11-03 | 安徽省含山县兴建铸造厂 | A kind of die treatment method for lifting damper casting property |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |