CN110102705A - Metal die dead head coating and its configuration method - Google Patents
Metal die dead head coating and its configuration method Download PDFInfo
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- CN110102705A CN110102705A CN201910281830.9A CN201910281830A CN110102705A CN 110102705 A CN110102705 A CN 110102705A CN 201910281830 A CN201910281830 A CN 201910281830A CN 110102705 A CN110102705 A CN 110102705A
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- dead head
- metal die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
The present invention provides a kind of metal die dead head coating and its configuration method, metal die dead head coating includes following primary raw material and component: acicular 6~7 parts by weight of kyanite mineral of fiber, keep the temperature 5~6 parts by weight of flake asbestos, 4~5 parts by weight of graphite powder, 2~3 parts by weight of Luo ore in sand form, by 2~4 parts by weight of coal gangue powder of high temperature sintering, 1~2 parts by weight of ceramic fibre, 1~2 parts by weight of alumina silicate fibre, 6~7 parts by weight of alkali liquid phenolic resin, 3~4 parts by weight of bentonite, 1~2 parts by weight of barium stearate and zinc stearate mixture, remaining is deionized water.The present invention can solve the defects of mold misrun, cold shut and mucous membrane in permanent mold casting production process in the prior art.
Description
Technical field
The present invention about a kind of metal die technical field of coatings more particularly to a kind of metal die dead head coating and its
Configuration method.
Background technique
Permanent mold casting has the characteristics that be used for multiple times and not influence to produce, and not only conforms with the sight of environmentally protective production
Point, and production cost and not high to technical requirements can be saved, it is easy to produce.But shortcoming is, the gas of the forging type
Body closure and no deformability are easy to carry out the casting flaws such as cold shut, misrun to casting belts.In order to improve feeding capacity, avoid
There is the defects of misrun, cold shut, usually swabbing is sprayed in metal type dies dead head working surface, to adjust mold
Cooling velocity, to achieve the purpose that improve casting quality.But the requirement with industrial production efficiency and to product quality is continuous
It improves, existing coating price is expensive, formula maintains secrecy, and is still difficult to meet above-mentioned requirements.
Summary of the invention
Therefore, one of the objects of the present invention is to provide a kind of metal die dead head coating and its configuration methods, with solution
Certainly in the prior art in permanent mold casting production process the defects of mold misrun, cold shut and mucous membrane.
In order to achieve the above object, the present invention provides a kind of metal die dead head coating, the metal die dead head coating packet
Following primary raw material and component: acicular 6~7 parts by weight of kyanite mineral of fiber are included, 5~6 parts by weight of flake asbestos, graphite are kept the temperature
4~5 parts by weight of powder, 2~3 parts by weight of Luo ore in sand form, by 2~4 parts by weight of coal gangue powder of high temperature sintering, 1~2 weight of ceramic fibre
Measure part, 1~2 parts by weight of alumina silicate fibre, 6~7 parts by weight of alkali liquid phenolic resin, 3~4 parts by weight of bentonite, stearic acid
1~2 parts by weight of barium and zinc stearate mixture, remaining is deionized water.
As optional technical solution, which includes following primary raw material and component: fiber needle
6 parts by weight of kyanite mineral of shape keep the temperature 5 parts by weight of flake asbestos, 4 parts by weight of graphite powder, 2 parts by weight of Luo ore in sand form, by high temperature
3 parts by weight of coal gangue powder of sintering, 1 parts by weight of ceramic fibre, 2 parts by weight of alumina silicate fibre, 6 weight of alkali liquid phenolic resin
Part, 3.5 parts by weight of bentonite, 1.5 parts by weight of barium stearate and zinc stearate mixture, remaining is deionized water.
The present invention also provides a kind of configuration method of metal die dead head coating as described above, the configuration method include with
Lower step:
(1) coal gangue powder of the acicular kyanite mineral of fiber, heat preservation flake asbestos, Luo ore in sand form and process high temperature sintering is passed through
Pulverizer is crushed to pulverulence, and the mixture of pulverulence is placed in blender and is stirred uniformly mixed, and pours into 65
In~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes, forms the first mixture；
(2) graphite powder, ceramic fibre, alumina silicate fibre and remaining deionized water are mixed, are then stood, then plus
Enter alkali liquid phenolic resin, bentonite and barium stearate and zinc stearate mixture stirs evenly, forms the second mixture；With
And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
As optional technical solution, in step (2), dwell temperature is 20-25 DEG C, and time of repose is 1.5-2 hours.
As optional technical solution, the thickness of the coating coated on dead head is not more than 3mm.
Compared with prior art, metal die dead head of the invention is water based paint, does not have to alcohol-based solvent, and safety is raw
It produces and does not dodge quick-fried security risk with when using；And the present invention uses alkali liquid phenolic resin, both has higher normal temperature strength,
Elevated temperature strength with higher again；The refractoriness of the acicular kyanite mineral of fiber is higher than wollastonite and silica flour and zirconium English powder
It is similar, due to its fiber acicular morphology, the intensity and gas permeability and refractoriness of coating can be improved；Ceramic fibre and aluminium silicate fiber
Dimension can get up filler and base-material tight bond, so that film is fine and close and continuous, so that the heat resistance of coating is improved,
Crack resistance is also improved simultaneously；The high temperature resistance that graphite powder is 3652 DEG C of fusing point covers sand mo(u)ld primers, for molten
Melt bonding and plays decisive role；The bentonitic coating that acts on plays that coating is easy to apply, coating does not crack, the work of viscous consistency
With；It is low to keep the temperature flake asbestos thermal conductivity, the molten metal heat losses at dead head position can be effectively reduced, is completed in casting filling, casting
When part starts solidification, solidify casting position preferentially, riser solidifies behind position, and interiors of products is avoided casting flaw occur；And this
The coating of invention joined barium stearate, zinc stearate, can effectively improve the Thermal Resistant Surface performance of film.The present invention passes through
The combination of above-mentioned each raw material and each process is so that coating obtained has excellent heat-resistant stability, high conjugation, in gold
Belong to and form fire-resistant shield layer between liquid and type chamber, improves molten metal to the scouring capability of type chamber, improve the service life of metal mold,
And in casting in use, riser is enabled to keep higher temperature, riser is not easy to solidify, and enables the liquid metal of casting
Smoothly pass through riser and enter in mold, guarantees that molding riser appearance is full, surface is smooth, improves the matter of casting
Amount.The configuration method has the advantages that process is simple and raw material is easy to get simultaneously.
It can be further understood by detailed description of the invention below about the advantages and spirit of the present invention.
Specific embodiment
The present invention provides a kind of metal die dead head coating, which includes following primary raw material
And component: acicular 6~7 parts by weight of kyanite mineral of fiber, heat preservation 5~6 parts by weight of flake asbestos, 4~5 parts by weight of graphite powder,
2~3 parts by weight of Luo ore in sand form, by 2~4 parts by weight of coal gangue powder of high temperature sintering, 1~2 parts by weight of ceramic fibre, aluminium silicate fiber
1~2 parts by weight are tieed up, 6~7 parts by weight of alkali liquid phenolic resin, 3~4 parts by weight of bentonite, barium stearate and zinc stearate are mixed
1~2 parts by weight of object are closed, remaining is deionized water.
Wherein preferably, metal die dead head coating includes following primary raw material and component: the acicular kyanite of fiber
6 parts by weight of mineral keep the temperature 5 parts by weight of flake asbestos, 4 parts by weight of graphite powder, 2 parts by weight of Luo ore in sand form, by the bastard coal of high temperature sintering
3 parts by weight of mountain flour, 1 parts by weight of ceramic fibre, 2 parts by weight of alumina silicate fibre, 6 parts by weight of alkali liquid phenolic resin, bentonite
3.5 parts by weight, 1.5 parts by weight of barium stearate and zinc stearate mixture, remaining is deionized water.
The present invention also provides a kind of configuration method of metal die dead head coating as described above, which includes
Following steps:
(1) coal gangue powder of the acicular kyanite mineral of fiber, heat preservation flake asbestos, Luo ore in sand form and process high temperature sintering is passed through
Pulverizer is crushed to pulverulence, and the mixture of pulverulence is placed in blender and is stirred uniformly mixed, and pours into 65
In~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes, forms the first mixture；
(2) graphite powder, ceramic fibre, alumina silicate fibre and remaining deionized water are mixed, are then stood, then plus
Enter alkali liquid phenolic resin, bentonite and barium stearate and zinc stearate mixture stirs evenly, forms the second mixture；With
And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
Wherein, in step (2), dwell temperature is 20-25 DEG C, and time of repose is 1.5-2 hours.
And the thickness for being coated on the coating of dead head is preferably not more than 3mm, if spraying is too thin, does not have adjusting mould
The effect of the cooling velocity of tool；If spraying is too thick, dope layer is easy to fall off, then influences whether running gate system size.
Below by specific embodiment, the present invention is further described, but claimed range is not limited to this implementation
The example content.
Embodiment 1
In the present embodiment, the configuration method of metal die dead head coating the following steps are included:
(1) by acicular 6 parts by weight of kyanite mineral of fiber, heat preservation 5 parts by weight of flake asbestos, 2 parts by weight of Luo ore in sand form and process
3 parts by weight of coal gangue powder of high temperature sintering are crushed to pulverulence by pulverizer, and the mixture of pulverulence is placed in stirring
It is stirred uniformly mixed in machine, and pours into 65~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes, forms the
One mixture；
(2) by 4 parts by weight of graphite powder, 1 parts by weight of ceramic fibre, 2 parts by weight of alumina silicate fibre and remaining deionized water into
Row mixing, then stands, and 6 parts by weight of alkali liquid phenolic resin, 3.5 parts by weight of bentonite and barium stearate and firmly are then added
1.5 parts by weight of resin acid zinc mixture stir evenly, and form the second mixture；And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
Embodiment 2
In the present embodiment, the configuration method of metal die dead head coating the following steps are included:
(1) by acicular 7 parts by weight of kyanite mineral of fiber, heat preservation 6 parts by weight of flake asbestos, 3 parts by weight of Luo ore in sand form and process
2 parts by weight of coal gangue powder of high temperature sintering are crushed to pulverulence by pulverizer, and the mixture of pulverulence is placed in stirring
It is stirred uniformly mixed in machine, and pours into 65~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes, forms the
One mixture；
(2) by 5 parts by weight of graphite powder, 2 parts by weight of ceramic fibre, 1 parts by weight of alumina silicate fibre and remaining deionized water into
Row mixing, then stands, and 7 parts by weight of alkali liquid phenolic resin, 3 parts by weight of bentonite and barium stearate and tristearin is then added
Sour 1 parts by weight of zinc mixture stir evenly, and form the second mixture；And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
Embodiment 3
In the present embodiment, the configuration method of metal die dead head coating the following steps are included:
(1) by acicular 6.5 parts by weight of kyanite mineral of fiber, heat preservation 5.5 parts by weight of flake asbestos, 2.5 parts by weight of Luo ore in sand form with
And pulverulence is crushed to by pulverizer by 4 parts by weight of coal gangue powder of high temperature sintering, the mixture of pulverulence is set
It is uniformly mixed in being stirred in blender, and pour into 65~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes,
Form the first mixture；
(2) by 4.5 parts by weight of graphite powder, 1.5 parts by weight of ceramic fibre, 1.5 parts by weight of alumina silicate fibre and it is remaining go from
Sub- water is mixed, and is then stood, and 6.5 parts by weight of alkali liquid phenolic resin, 4 parts by weight of bentonite and stearic acid is then added
Barium and 2 parts by weight of zinc stearate mixture stir evenly, and form the second mixture；And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
Then, in accordance with the following methods, the metal die dead head coating configured in above-described embodiment 1-3 is applied respectively
It is overlying on the test of the riser of metal die:
(1) the configured coating of success is taken out；
(2) metal die pre-processed is heated to 280 DEG C~350 DEG C, this temperature is the optimal temperature brushed；
(3) it is brushed in mold riser with coating pen, paint thickness 2.4mm；
(4) etc. after being heated to required temperature, the casting die that step (3) has sprayed is put into holding furnace and is toasted, to make mould
The temperature of tool work reaches 380 DEG C or so, but must not be higher than 420 DEG C low 350 DEG C, then maintains 1h~2h.
Riser coating after the coating of each embodiment is observed and tested, it is found that the coating that above-described embodiment 1-3 is obtained
It is consistent in mo(U)ld face depositing homogeneous, no cracking or skin effect phenomenon；Coating adhesion is strong, high temperature resistant up to 1750 DEG C or more, and
Metal freezing is slow at riser, so that riser appearance is full, surface is smooth.
In conclusion the present invention as the combination of above-mentioned each raw material and each process so that made from coating have it is excellent
Heat-resistant stability, high conjugation, between molten metal and type chamber formed fire-resistant shield layer, improve molten metal type chamber is washed away
Ability improves the service life of metal mold, and in casting in use, riser is enabled to keep higher temperature, riser is not easy
Solidification enables the liquid metal of casting smoothly to pass through riser and enters in mold, guarantees that molding riser appearance is full
Full, surface is smooth, improves the quality of casting.The configuration method has the advantages that process is simple and raw material is easy to get simultaneously.
By the above detailed description of preferred embodiments, it is intended to more clearly describe feature and spirit of the invention,
And not protection scope of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its purpose
It is intended to cover various changes and has being arranged in the scope of protection of the claims of the invention to be applied of equality.Cause
This, the applied scope of protection of the claims of the present invention should illustrate the most wide explanation of work according to above-mentioned, to cause it
Cover the arrangement of all possible change and tool equality.
Claims (5)
1. a kind of metal die dead head coating, which is characterized in that the metal die dead head coating includes following primary raw material
And component: acicular 6~7 parts by weight of kyanite mineral of fiber, heat preservation 5~6 parts by weight of flake asbestos, 4~5 parts by weight of graphite powder,
2~3 parts by weight of Luo ore in sand form, by 2~4 parts by weight of coal gangue powder of high temperature sintering, 1~2 parts by weight of ceramic fibre, aluminium silicate fiber
1~2 parts by weight are tieed up, 6~7 parts by weight of alkali liquid phenolic resin, 3~4 parts by weight of bentonite, barium stearate and zinc stearate are mixed
1~2 parts by weight of object are closed, remaining is deionized water.
2. metal die dead head coating as described in claim 1, which is characterized in that the metal die dead head coating includes
Following primary raw material and component: acicular 6 parts by weight of kyanite mineral of fiber keep the temperature 5 parts by weight of flake asbestos, 4 weight of graphite powder
Part, 2 parts by weight of Luo ore in sand form, by 3 parts by weight of coal gangue powder of high temperature sintering, 1 parts by weight of ceramic fibre, 2 weight of alumina silicate fibre
Measure part, 6 parts by weight of alkali liquid phenolic resin, 3.5 parts by weight of bentonite, 1.5 weight of barium stearate and zinc stearate mixture
Part, remaining is deionized water.
3. a kind of configuration method of any one of such as claim 1-2 metal die dead head coating, which is characterized in that this is matched
Set method the following steps are included:
(1) coal gangue powder of the acicular kyanite mineral of fiber, heat preservation flake asbestos, Luo ore in sand form and process high temperature sintering is passed through
Pulverizer is crushed to pulverulence, and the mixture of pulverulence is placed in blender and is stirred uniformly mixed, and pours into 65
In~75 DEG C of deionized water, high-speed stirred is dispersed 35~45 minutes, forms the first mixture；
(2) graphite powder, ceramic fibre, alumina silicate fibre and remaining deionized water are mixed, are then stood, then plus
Enter alkali liquid phenolic resin, bentonite and barium stearate and zinc stearate mixture stirs evenly, forms the second mixture；With
And
(3) first mixture is mixed with second mixture, and continues high-speed stirred and disperses 30~40 minutes, obtain this
Metal die dead head coating.
4. the configuration method of metal die dead head coating as described in claim 1, which is characterized in that in step (2), stand
Temperature is 20-25 DEG C, and time of repose is 1.5-2 hours.
5. the configuration method of metal die dead head coating as claimed in claim 3, which is characterized in that coated on dead head
The thickness of coating is not more than 3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910281830.9A CN110102705A (en) | 2019-04-09 | 2019-04-09 | Metal die dead head coating and its configuration method |
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| CN201910281830.9A CN110102705A (en) | 2019-04-09 | 2019-04-09 | Metal die dead head coating and its configuration method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250648A (en) * | 2020-03-27 | 2020-06-09 | 霍山县东胜铸造材料有限公司 | Preparation process of casting riser smooth coating |
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| CN102179473A (en) * | 2011-05-11 | 2011-09-14 | 李华山 | Lost foam casting composite coating |
| CN103100651A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Method for preparing solid-mold casting coating material for large-sized cast parts |
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Application publication date: 20190809 |