CN105251945A - Gravity casting technique for metal mold - Google Patents
Gravity casting technique for metal mold Download PDFInfo
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- CN105251945A CN105251945A CN201410341137.3A CN201410341137A CN105251945A CN 105251945 A CN105251945 A CN 105251945A CN 201410341137 A CN201410341137 A CN 201410341137A CN 105251945 A CN105251945 A CN 105251945A
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- mold
- paint
- mould
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Abstract
The invention discloses a gravity casting technique for a metal mold. The gravity casting technique is characterized in that the gravity casting technique comprises the following steps that (1) the mold is cleaned, and the surface of the mold is polished and cleaned by means of a steel wire wheel, so that the surface of the mold is smooth, and demolding for a casting can be achieved easily; (2) preheating is conducted, the mold is preheated by means of flames of liquefied gas, so that the temperature of the mold is increased, and the temperature of the mold is generally controlled to be 95-105 DEG C; (3) special paint is sprayed, the surface of an inner cavity of the mold is sprayed with a layer of special heat-resistant paint by means of a spraying gun, the paint spraying temperature is controlled to be 250-300 DEG C, and the mold needs to be heated and dried after the paint is sprayed, so that water in paint is removed; (4) mold testing is conducted, mold testing can be conducted after preparation is completed, and whether the mold reaches the available state or not is observed after the mold is tested through one to two workpieces; and (5) casting is conducted, and normal casting is conducted if mold testing is conducted successfully. The gravity casting technique for the metal mold has the advantages that the paint adhesion force is high, the mold stripping rate of products is high, and the rate of finished products is high; the rate of finished products can reach over 95%.
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 existing metal gravity cast, generally use liquefied gas flame by mould and die preheating to about 100 DEG C, then spray paint is poured into a mould.In this case, 2 to 3 of starting are second-rate for cast product, start to take a turn for the better with latter made casting quality, and along with the rising of mold temperature, the quality of foundry goods starts continuous decrease again, and final up-to-standard rate is generally about 80%.
Summary of the invention
Object of the present invention is exactly for overcoming the defect and 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 adopted is:
Metal gravity pouring technology, is characterized in that comprising following technical process:
1, mold cleaning
Carry out polishing cleaning with wire wheel to die surface, make die surface smooth, the foundry goods demoulding is easily thrown off.
2, preheating
Carry out pre-heating temperature elevation with liquefied gas flame to mould, mold temperature general control is at 95-105 DEG C.
3, special coating is sprayed
After reaching temperature, the special heat-resisting paint of last layer is coated with to mold cavity surfaces spray gun, spray paint temperature is fixed on 250 DEG C about-300 DEG C, toast with carbon fire and spray.When mold temperature is elevated to more than 300 DEG C, use wind cooling temperature lowering.Temperature like this with regard to maintaining mould is no more than 300 DEG C, and the coating that in time stripping pattern place filled spray, and then pour into a mould, coating sprays well also to be needed to carry out heating, drying to mould, to remove the moisture in coating.
4, die trial
Preparation can carry out die trial after finishing, and after having a fling at 1 to 2, observes mould and whether reaches upstate.
5, pour into a mould
Pour into a mould normally after die trial is no problem.
Spray paint temperature, by putting into practice and summing up, is fixed on 250 DEG C about-300 DEG C by the present invention, toasts with carbon fire and sprays.When mold temperature is elevated to more than 300 DEG C, use wind cooling temperature lowering.Temperature like this with regard to maintaining mould is no more than 300 DEG C, and the coating that in time stripping pattern place filled spray, and then pour into a mould.Discovery during by carrying out actual production after Optimization Technology, paint adhesion is strong, and the depanning rate of product significantly improves, and yield rate can reach more than 95%.
The present invention compared with prior art has the following advantages:
Discovery during by carrying out actual production after Optimization Technology, it is strong that technique of the present invention has paint adhesion, and the depanning rate of product is high, yield rate advantages of higher, and yield rate can reach more than 95%.
Detailed description of the invention
Metal gravity pouring technology, specifically comprises following technical process:
1, mold cleaning
Carry out polishing cleaning with wire wheel to die surface, make die surface smooth, the foundry goods demoulding is easily thrown off.
2, preheating
Carry out pre-heating temperature elevation with liquefied gas flame to mould, mold temperature general control is at about 100 DEG C.
3, special coating is sprayed
After reaching temperature, the special heat-resisting paint of last layer is coated with to mold cavity surfaces spray gun, spray paint temperature is controlled at 295 DEG C.Coating sprays well also to be needed to carry out heating, drying to mould, to remove the moisture in coating.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is by appending claims and equivalent circle thereof.
Claims (1)
1. metal gravity pouring technology, is characterized in that comprising following technical process:
1) mold cleaning, carry out polishing cleaning with wire wheel to die surface, make die surface smooth, the foundry goods demoulding is easily thrown off; 2) preheating, carries out pre-heating temperature elevation with liquefied gas flame to mould, and mold temperature general control is at 95-105 DEG C; 3) spray special coating, be coated with the special heat-resisting paint of last layer, spray paint temperature controlled at 250 DEG C-300 DEG C mold cavity surfaces spray gun, coating sprays well also to be needed to carry out heating, drying to mould, to remove the moisture in coating; 4) die trial, preparation can carry out die trial after finishing, and after having a fling at 1 to 2, observes mould and whether reaches upstate; 5) pour into a mould, pour into a mould normally after die trial is no problem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341137.3A CN105251945A (en) | 2014-07-18 | 2014-07-18 | Gravity casting technique for metal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341137.3A CN105251945A (en) | 2014-07-18 | 2014-07-18 | Gravity casting technique for metal mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105251945A true CN105251945A (en) | 2016-01-20 |
Family
ID=55092040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341137.3A Pending CN105251945A (en) | 2014-07-18 | 2014-07-18 | Gravity casting technique for metal mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105251945A (en) |
-
2014
- 2014-07-18 CN CN201410341137.3A patent/CN105251945A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |