CN103273016A - Metal mold gravity casting technology - Google Patents
Metal mold gravity casting technology Download PDFInfo
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- CN103273016A CN103273016A CN 201310154462 CN201310154462A CN103273016A CN 103273016 A CN103273016 A CN 103273016A CN 201310154462 CN201310154462 CN 201310154462 CN 201310154462 A CN201310154462 A CN 201310154462A CN 103273016 A CN103273016 A CN 103273016A
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- mould
- paint
- temperature
- coating
- spray
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Abstract
A metal mold gravity casting technology is characterized by comprising the following processes: 1) mould cleaning, polishing and cleaning the surface of a mould by a wire wheel to make the mould surface to be smooth and further to make a cast to demould easily; 2) preheating, preheating and heating the mould using a liquefied gas flame, and controlling a mould temperature generally between 95 DEG C to 105 DEG C; 3) special-paint spraying, spraying a layer of special heatproof paint on the inner chamber surface of the mould by a spray gun, with a paint spraying temperature of 250 DEG C to 300 DEG C, after the paint is sprayed, heating and drying the mould to remove moisture in the paint; 4) mould testing, after finishing the preparation work, testing the mould, after trial casting of 1 to 2 casts, observing whether the mould is in an available state or not; 5) casting, normally casting after no problem exists in the mould testing process. The metal mold gravity casting technology has the advantages of being strong in paint adhesion, high in demoulding rate of products, high in yield and the like, wherein the yield is up to 95% or more.
Description
Technical field
The present invention relates to a kind of pouring technology, particularly relate to a kind of metal gravity pouring technology.
Background technology
During the cast of existing metal gravity, generally use liquefied gas flame with about mould and die preheating to 100 ℃, spray paint is poured into a mould then.In this case, 2 to 3 of beginning are second-rate for the cast product, and the casting quality of Zhi Zuoing begins to take a turn for the better subsequently, and along with the rising of mold temperature, the quality of foundry goods begins again to continue decline, and final up-to-standard rate is generally about 80%.
Summary of the invention
Purpose of the present invention is exactly for overcoming defective and the deficiency that above-mentioned prior art exists, and provides a kind of paint adhesion strong, the metal gravity pouring technology that product depanning rate is high.
The technical scheme that adopts is:
The metal gravity pouring technology is characterized in that comprising following technical process:
1, mold cleaning
To the die surface cleaning of polishing, make die surface smooth with wire wheel, the foundry goods demoulding is thrown off easily.
2, preheating
With liquefied gas flame mould is carried out pre-heating temperature elevation, mold temperature is generally controlled at 95-105 ℃.
3, spray special coating
After reaching temperature, mold cavity surfaces is coated with the heat-resisting paint of last layer special use with spray gun, the spray paint temperature is fixed on about 250 ℃-300 ℃, with the baking of carbon fire and spray.When mold temperature is elevated to more than 300 ℃, use wind cooling temperature lowering.Be no more than 300 ℃ with regard to the temperature that has kept mould like this, and the coating that in time the stripping pattern place filled spray, and then pour into a mould, after spraying well, coating also needs carry out heating, drying to mould, to remove the moisture in the coating.
4, die trial
Can carry out die trial after preparation is finished, after having a fling at 1 to 2, observe mould and whether reach upstate.
5, cast
Pour into a mould normally after die trial is no problem.
The present invention fixes on the spray paint temperature about 250 ℃-300 ℃ by practice and summary, toasts and sprays with the carbon fire.When mold temperature is elevated to more than 300 ℃, use wind cooling temperature lowering.Be no more than 300 ℃ with regard to the temperature that has kept mould like this, and the coating that in time the stripping pattern place filled spray, and then pour into a mould.Find that paint adhesion is strong when carrying out actual production by optimizing after the technology, the depanning rate of product obviously improves, and yield rate can reach more than 95%.
The present invention compared with prior art has the following advantages:
Find when carrying out actual production by optimizing after the technology that it is strong that technology of the present invention has a paint adhesion, the depanning rate height of product, the yield rate advantages of higher, yield rate can reach more than 95%.
The specific embodiment
The metal gravity pouring technology specifically comprises following technical process:
1, mold cleaning
To the die surface cleaning of polishing, make die surface smooth with wire wheel, the foundry goods demoulding is thrown off easily.
2, preheating
With liquefied gas flame mould is carried out pre-heating temperature elevation, mold temperature is generally controlled about 100 ℃.
3, spray special coating
After reaching temperature, mold cavity surfaces is coated with the heat-resisting paint of last layer special use with spray gun, with the control of spray paint temperature at 295 ℃.After spraying well, coating also needs carry out heating, drying to mould, to remove the moisture in the coating.
Claims (1)
1. metal gravity pouring technology is characterized in that comprising following technical process:
1) mold cleaning to the die surface cleaning of polishing, makes die surface smooth with wire wheel, and the foundry goods demoulding is thrown off easily; 2) preheating is carried out pre-heating temperature elevation with liquefied gas flame to mould, and mold temperature is generally controlled at 95-105 ℃; 3) the spray special coating is coated with the heat-resisting paint of last layer special use to mold cavity surfaces with spray gun, and at 250 ℃-300 ℃, coating sprays also to be needed carry out heating, drying to mould after good, to remove the moisture in the coating with the control of spray paint temperature; 4) die trial can be carried out die trial after preparation is finished, and after having a fling at 1 to 2, observes mould and whether reaches upstate; 5) cast is poured into a mould after die trial is no problem normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310154462 CN103273016A (en) | 2013-04-18 | 2013-04-18 | Metal mold gravity casting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310154462 CN103273016A (en) | 2013-04-18 | 2013-04-18 | Metal mold gravity casting technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103273016A true CN103273016A (en) | 2013-09-04 |
Family
ID=49055694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310154462 Pending CN103273016A (en) | 2013-04-18 | 2013-04-18 | Metal mold gravity casting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103273016A (en) |
-
2013
- 2013-04-18 CN CN 201310154462 patent/CN103273016A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |