CN203862991U - Antioxidation cover - Google Patents
Antioxidation cover Download PDFInfo
- Publication number
- CN203862991U CN203862991U CN201420135262.4U CN201420135262U CN203862991U CN 203862991 U CN203862991 U CN 203862991U CN 201420135262 U CN201420135262 U CN 201420135262U CN 203862991 U CN203862991 U CN 203862991U
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- CN
- China
- Prior art keywords
- cover
- antioxidation
- double
- inlet pipe
- layer structure
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an antioxidation cover which comprises a cover cap and a bottom box of a double-layer structure. A water outlet pipe and a water inlet pipe are respectively arranged on a casing on the two sides of the bottom box, and a valve is arranged on the water inlet pipe. By means of the bottom box of the double-layer structure, flowing cooling water can flow through the double-layer structure, heat in the antioxidation cover can be mostly absorbed and brought away by the cooling water in conduction and convection modes, and the cooling speed to liquid alloy in a shell mold can be greatly quickened. Thus, the defects of large metallographic structure grains, shrinkage cavities and shrinkage porosity in casting parts are overcome, and the antioxidation cover is prevented from deforming and being damaged in use.
Description
Technical field
The utility model relates to precision-investment casting industry, particularly a kind of anti-oxidant cover.
Background technology
In the time of the oxidizable material foundry goods of cast, need after cast, shell mould be put into anti-oxidant cover, and put into a certain amount of combustible in anti-oxidant cover.In the time that combustible burns, can consume the oxygen in anti-oxidant cover, form reducibility gas, alleviate or eliminate the oxidized object of aluminium alloy thereby reach.
But because radiating effect in anti-oxidant cover is not good, cause the aluminium alloy cooling velocity in shell mould significantly to slow down, cause the coarse grains of foundry goods, have a strong impact on the mechanical performance of foundry goods.On the other hand, because foundry goods cooling velocity significantly declines, reduce the thermograde of foundry goods, be unfavorable for the feeding of running gate system, increased the generation tendency of foundry goods shrinkage cavity shrinkage porosity.In addition, anti-oxidant cover, owing to being subject to the high-temperature baking of shell mould, very easily producing distortion and even damages.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of anti-oxidant cover, to avoid foundry goods to produce the defects such as metallographic structure coarse grains and shrinkage cavity shrinkage porosity, and avoids anti-oxidant cover in use free distortion and damage.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of anti-oxidant cover, comprises cover cap and double-deck under casing, on the both sides shell of described under casing, is respectively arranged with outlet pipe and water inlet pipe, on described water inlet pipe, is provided with valve.
Pass through technique scheme, the anti-oxidant cover that the utility model provides, adopt double-deck under casing, between double-decker, pass into mobile cooling water, heat in anti-oxidant cover is taken away with the mode of conduction and convection a large amount of absorption of water that be cooled, the cooling velocity of aluminium alloy in shell mould is accelerated greatly, thereby avoided foundry goods to produce the defects such as metallographic structure coarse grains and shrinkage cavity shrinkage porosity, and avoided anti-oxidant cover in use free distortion and damage.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described.
Fig. 1 is the structural representation of the disclosed a kind of anti-oxidant cover of the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
The utility model provides a kind of anti-oxidant cover (referring to Fig. 1), comprises cover cap 11 and double-deck under casing 12, is respectively arranged with outlet pipe 13 and water inlet pipe 14 on the both sides shell of under casing 12, is provided with valve 15 on water inlet pipe 14.
Before the complete preparation cast of aluminium alloy melting, open valve 15 and pass into cooling water in the under casing 12 of anti-oxidant cover, after cast, shell mould A is put into the under casing 12 of anti-oxidant cover, in anti-oxidant cover, add a certain amount of combustible, then cover cover cap.
The utility model adopts double-deck under casing, between double-decker, pass into mobile cooling water, heat in anti-oxidant cover is taken away with the mode of conduction and convection a large amount of absorption of water that be cooled, the cooling velocity of aluminium alloy in shell mould is accelerated greatly, thereby avoid foundry goods to produce the defects such as metallographic structure coarse grains and shrinkage cavity shrinkage porosity, and avoided anti-oxidant cover in use free distortion and damage.
To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. an anti-oxidant cover, is characterized in that, comprises cover cap and double-deck under casing, on the both sides shell of described under casing, is respectively arranged with outlet pipe and water inlet pipe, on described water inlet pipe, is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135262.4U CN203862991U (en) | 2014-03-25 | 2014-03-25 | Antioxidation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135262.4U CN203862991U (en) | 2014-03-25 | 2014-03-25 | Antioxidation cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203862991U true CN203862991U (en) | 2014-10-08 |
Family
ID=51643981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135262.4U Expired - Fee Related CN203862991U (en) | 2014-03-25 | 2014-03-25 | Antioxidation cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203862991U (en) |
-
2014
- 2014-03-25 CN CN201420135262.4U patent/CN203862991U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20160325 |