CN104550715B - Method for manufacturing integral casting metal mould - Google Patents
Method for manufacturing integral casting metal mould Download PDFInfo
- Publication number
- CN104550715B CN104550715B CN201510046162.3A CN201510046162A CN104550715B CN 104550715 B CN104550715 B CN 104550715B CN 201510046162 A CN201510046162 A CN 201510046162A CN 104550715 B CN104550715 B CN 104550715B
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- CN
- China
- Prior art keywords
- mould
- casting
- die
- ceramic shell
- layer
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
Abstract
The invention provides a method for manufacturing an integral casting metal mould. The method comprises the following steps of: (1) processing a concave mould of the integral casting metal mould by using a polystyrene foam material; (2) coating a mixture prepared from epoxy resin and graphite powder on the surface of the concave mould; (3) processing the size of the concave mould to the design size of the integral casting metal mould; (4) coating a silicone rubber layer on the surface of the processed concave mould, then carrying out random fixing on the silicone rubber layer by using a gypsum layer, and removing the concave mould to obtain a convex mould; (5) coating mixed slurry on the surface of the convex mould, after the mixed slurry is air-dried, removing the convex mould to obtain a ceramic shell blank, and air-drying the ceramic shell blank; (6) calcining the ceramic shell blank to obtain a ceramic shell; (7) utilizing the ceramic shell as a casting lower cavity, modeling an upper cavity by using water glass sand, and arranging a casting head; (8) closing the upper cavity and the lower cavity, pouring molten metal, removing the upper cavity and the lower cavity after the molten metal is solidified to obtain an integral metal mould casting, and polishing to obtain the integral casting metal mould. The method provided by the invention has the advantages of simple process, low cost and high accuracy.
Description
Technical field
The present invention provides the manufacture method that a kind of monoblock type cast metal mould has, and belongs to casting technology field.
Background technology
In traditional Metallic Casting Die & Mold manufacture process, general process is to produce the metal die of foundry goods, dead head mould respectively
The die assemblies such as tool and alignment pin, carry out carrying out these assemblies assembling forming casting mould, this metal the most again on template
The shortcomings such as it is complicated that the manufacture method of mould exists manufacturing process, and the production cycle is long, and manufacturing cost is high.Competing due to current foundry industry
It is day by day fierce to strive, and is badly in need of the manufacturing speed the accelerating mould demand with response market, so traditional Metallic Casting Die & Mold manufacturer
Method is difficult to meet the growing market demand.
Summary of the invention
Present disclosure is to provide a kind of deficiency that can overcome above-mentioned conventional metals casting manufacture method, simplifies manufacturing process, contracting
Short production cycle, reduces the manufacture method of the monoblock type cast metal mould tool of production cost, this kind of metals mold manufacturing side's Guttae Phacosylini
Go out required Metallic Casting Die & Mold with numerical-control processing method, ceramic precision casting method one-step casting, can be used for carbon steel or aluminium
In the manufacture process of the Metallic Casting Die & Mold of matter.Its technical scheme is:
The manufacture method of a kind of monoblock type cast metal mould tool, it is characterised in that employing following steps: 1) utilize polystyrene foam
Material processes unitary mould die on numerically controlled processing equipment；2) at unitary mould molding surface craft brushing last layer 2～3mm
Epoxide resin material and the mixture that is blended of graphite powder；3) the unitary mould die of mixture layer will be scribbled in digital control processing
Again position on equipment, it is processed, by the design size of the dimensioned of unitary mould die to bulk metal mould；4)
The surface manual application last layer silastic-layer of unitary mould die after processing, again at silastic-layer after silastic-layer solidifies
The upper gypsic horizons by 20～30mm thickness carry out fixing with type, obtain for manufacturing ceramic mould after then being removed by unitary mould die
Punch；5) uniformly coat, at convex mould surface, the mixed slurry that last layer 30～40mm is thick, after slurry to be mixed dries, remove
Punch then obtains ceramic shell base substrate, and is dried by ceramic shell base substrate；6) the ceramic shell base substrate after drying puts into heating furnace
In, after 950～1150 DEG C, 30～35min roasting, i.e. obtain ceramic shell；7) ceramic shell is used as the casting of cast metal mould tool
The lower impressions of type, produces the upper impression of the casting mold matched with this upper impression, and arranges dead head with waterglass sand mold；8) will casting
Type upper and lower die cavity mould assembling casting of molten metal, remove upper and lower die cavity after molten metal solidifies, obtain bulk metal mould foundry goods,
One piece casting metal die is i.e. can get after being polished by bulk metal mould cast(ing) surface.
The manufacture method of described monoblock type cast metal mould tool, step 1) in when processing unitary mould die, first draw out
The graphics of Metallic Casting Die & Mold, comprises mould shaping plate, casting die, dead head and alignment pin, and according to casting mould group
The size of dress arranges, and the overall dimensions of casting die, dead head and alignment pin increases the allowance of 1～2mm, should
After casting mould graphics generates processor, polystyrene plates and numerically controlled processing equipment is utilized to process Metallic Casting Die & Mold
Unitary mould die.
The manufacture method of described monoblock type cast metal mould tool, step 2) in, mixture is by epoxy resin, firming agent, increasing
Tough dose and granularity form with the weight ratio of 100:38:15:250～350 at the graphite powder of 280～400 mesh, its epoxy resin
For E44 type, firming agent is modified multicomponent amine, and toughener is dibutyl phthalate.
The manufacture method of described monoblock type cast metal mould tool, step 4) in, silastic-layer is by the mould silicon of RTV-2 model
Rubber and dibutyl tin laurate mix, and both weight ratios are 100:2.
The manufacture method of described monoblock type cast metal mould tool, step 5) in, mixed slurry is molten by refractory material powder, silicon
Glue and water reducer are mixed with the weight ratio of 260:100～120:0.5～0.8, and wherein granularity >=280 selected by refractory material powder
Purpose tekite sand, Ludox uses the alkaline silica sol of hot investment casting, and water reducer uses wooden calcium sulfonate.
Compared with prior art, its advantage is the present invention:
1, owing to using polystyrene material, epoxy resin and the composite of graphite powder, Computerized Numerical Control processing technology to manufacture non-detachable mold
The die of tool, so the process time of unitary mould die is short, reduces the processing cost of mould.
2, utilize unitary mould die, silastic-layer and Gypsum Fibrosum to manufacture punch, then manufactured ceramic shell by punch, technique letter
Single, it is ensured that the dimensional accuracy of mould.
3, obtain the Metallic Casting Die & Mold of entirety after utilizing ceramic shell casting of molten metal, it is to avoid the assembling procedure of mould, simplify
Manufacture process, reduces production cost.
Detailed description of the invention
Embodiment one, manufactures the monoblock type cast metal mould tool of carbon steel material, concretely comprises the following steps:
1) first draw out the graphics of Metallic Casting Die & Mold, comprise mould shaping plate, casting die, dead head and alignment pin,
And arrange according to the size of casting mould assembling, the overall dimensions of casting die, dead head and alignment pin is increased 1mm's
Allowance, after this casting mould graphics is generated processor, utilizes polystyrene foam sheet and numerically controlled processing equipment to add
Work goes out the unitary mould die of Metallic Casting Die & Mold.
2) mixing being blended at epoxide resin material and the graphite powder of unitary mould molding surface craft brushing last layer 2mm
Thing, mixture by epoxy resin, firming agent, toughener and granularity at the graphite powder of 280 mesh with the weight of 100:38:15:250
Amount is than composition, and its epoxy resin is E44 type, and firming agent is modified multicomponent amine, and toughener is dibutyl phthalate.
3) the unitary mould die scribbling mixture layer is positioned on numerically controlled processing equipment again, it is processed, by entirety
The dimensioned of female die of die is to the design size of bulk metal mould.
4) the surface manual application last layer silastic-layer of unitary mould die after processing, silastic-layer is by RTV-2 model
Molded silicon rubber and dibutyl tin laurate mix, and both weight ratios are 100:2；Again at silicon after silastic-layer solidifies
Carry out fixing with type with the gypsic horizon that 25mm is thick on rubber layer, obtain for manufacturing ceramic mould after then unitary mould die being removed
Punch.
5) uniformly coating the thick mixed slurry of last layer 35mm at convex mould surface, mixed slurry is by refractory material powder, Ludox
Being mixed with the weight ratio of 260:100～120:0.5～0.8 with water reducer, wherein granularity 280 mesh selected by refractory material powder
Tekite sand, Ludox use hot investment casting alkaline silica sol, water reducer use wooden calcium sulfonate, slurry to be mixed
After drying, remove punch and then obtain ceramic shell base substrate, and ceramic shell base substrate is dried.
6) the ceramic shell base substrate after drying is put in heating furnace, through 1150 DEG C, i.e. obtain ceramic shell after 35min roasting.
7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould tool, produces with waterglass sand mold and match with this upper impression
The upper impression of casting mold, and dead head is set.
8) by upper and lower for casting mold die cavity mould assembling and pour into a mould carbon steel metal liquid, after carbon steel metal liquid solidifies, upper and lower die cavity is removed,
To carbon steel material Integral casting die foundry goods, after surface finish, i.e. can get carbon steel material Integral casting die.
Embodiment two, manufactures the monoblock type cast metal mould tool of aluminum alloy material, and it concretely comprises the following steps:
1) first draw out the graphics of Metallic Casting Die & Mold, comprise mould shaping plate, casting die, dead head and alignment pin,
And arrange according to the size of casting mould assembling, the overall dimensions of casting die, dead head and alignment pin is increased 2mm's
Allowance, after this casting mould graphics is generated processor, utilizes polystyrene foam sheet and numerically controlled processing equipment to add
Work goes out the unitary mould die of Metallic Casting Die & Mold.
2) mixing being blended at epoxide resin material and the graphite powder of unitary mould molding surface craft brushing last layer 3mm
Thing, mixture by epoxy resin, firming agent, toughener and granularity at the graphite powder of 300 mesh with the weight of 100:38:15:280
Amount is than composition, and its epoxy resin is E44 type, and firming agent is modified multicomponent amine, and toughener is dibutyl phthalate.
3) the unitary mould die scribbling mixture layer is positioned on numerically controlled processing equipment again, it is processed, by entirety
The dimensioned of female die of die is to the design size of bulk metal mould.
4) the surface manual application last layer silastic-layer of unitary mould die after processing, silastic-layer is by RTV-2 model
Molded silicon rubber and dibutyl tin laurate mix, and both weight ratios are 100:2；Again at silicon after silastic-layer solidifies
Carry out fixing with type with the gypsic horizon that 30mm is thick on rubber layer, obtain for manufacturing ceramic mould after then unitary mould die being removed
Punch.
5) uniformly coating the thick mixed slurry of last layer 40mm at convex mould surface, mixed slurry is by refractory material powder, Ludox
Being mixed with the weight ratio of 260:120:0.8 with water reducer, wherein the vitreous silica of granularity 300 mesh selected by refractory material powder
Sand, Ludox uses the alkaline silica sol of hot investment casting, and water reducer uses wooden calcium sulfonate, after slurry to be mixed dries,
Remove punch and then obtain ceramic shell base substrate, and ceramic shell base substrate is dried.
6) the ceramic shell base substrate after drying is put in heating furnace, through 950 DEG C, i.e. obtain ceramic shell after 30min roasting.
7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould tool, produces with waterglass sand mold and match with this upper impression
The upper impression of casting mold, and dead head is set.
8) by lower impressions mould assembling on casting mold and pour into a mould cast aluminium molten metal, after cast aluminium molten metal solidifies, ceramic shell and waterglass are removed
Sand, obtains bulk metal mould foundry goods, i.e. can get monoblock cast aluminium metal die after being polished by bulk metal mould cast(ing) surface.
8) by upper and lower for casting mold die cavity mould assembling cast aluminum alloying metal liquid, after Al-alloy metal liquid solidifies, upper and lower die cavity is removed,
Obtain aluminum alloy material Integral casting die foundry goods, after surface finish, i.e. can get aluminum alloy material Integral casting die.
After testing, for carbon steel material or the casting mould of aluminum alloy material, the present invention is used to manufacture bulk metal casting
Modeling has, and can shorten the process time of mould, reduces the processing cost of mould, eliminates the assembling procedure of mould, simplify mould
The manufacturing process of tool, it is ensured that the dimensional accuracy of mould, reduces production cost.
Claims (3)
1. the manufacture method of a monoblock type cast metal mould tool, it is characterised in that employing following steps: 1) utilize polystyrene
Foamed materials processes unitary mould die on numerically controlled processing equipment, the most first draws out the graphics of Metallic Casting Die & Mold,
Comprise mould shaping plate, casting die, dead head and alignment pin, and the size assembled according to casting mould arranges, will casting
The overall dimensions of part mould, dead head and alignment pin increases by the allowance of 1～2mm, and this casting mould graphics is generated processing
After program, polystyrene plates and numerically controlled processing equipment is utilized to process the unitary mould die of Metallic Casting Die & Mold；2) in entirety
The mixture that the epoxide resin material of female die of die surface craft brushing last layer 2～3mm and graphite powder are blended, mixture by
Epoxy resin, firming agent, toughener and granularity at the graphite powder of 280～400 mesh with the weight of 100:38:15:250～350
Than composition, its epoxy resin is E44 type, and firming agent is modified multicomponent amine, and toughener is dibutyl phthalate；3) will
The unitary mould die scribbling mixture layer positions on numerically controlled processing equipment again, is processed it, by unitary mould die
Dimensioned to the design size of bulk metal mould；4) the surface manual application last layer of unitary mould die after processing
Silastic-layer, carries out fixing with type with 20～30mm thick gypsic horizons again on silastic-layer after silastic-layer solidifies, then will
Unitary mould die obtains the punch for manufacturing ceramic mould after removing；5) last layer 30～40mm is uniformly coated at convex mould surface
Thick mixed slurry, after slurry to be mixed dries, removes punch and then obtains ceramic shell base substrate, and dried in the air by ceramic shell base substrate
Dry；6) the ceramic shell base substrate after drying is put in heating furnace, i.e. obtains ceramic after 950～1150 DEG C, 30～35min roasting
Shell；7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould tool, produces with waterglass sand mold and match with this upper impression
The upper impression of the casting mold closed, and dead head is set；8) by upper and lower for casting mold die cavity mould assembling casting of molten metal, treat that molten metal solidifies
The upper and lower die cavity of rear removal, obtains bulk metal mould foundry goods, i.e. available entirety after being polished by bulk metal mould cast(ing) surface
Cast metal mould has.
2. the manufacture method of monoblock type cast metal mould tool as claimed in claim 1, it is characterised in that: step 4) in, silicon
Rubber layer is mixed by molded silicon rubber and the dibutyl tin laurate of RTV-2 model, and both weight ratios are 100:2.
3. the manufacture method of monoblock type cast metal mould tool as claimed in claim 1, it is characterised in that: step 5) in, mixed
Close slurry to be mixed with the weight ratio of 260:100～120:0.5～0.8 by refractory material powder, Ludox and water reducer, its
The tekite sand of granularity >=280 mesh selected by middle refractory material powder, and Ludox uses the alkaline silica sol of hot investment casting, subtracts
Water preparation uses wooden calcium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046162.3A CN104550715B (en) | 2015-01-29 | 2015-01-29 | Method for manufacturing integral casting metal mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046162.3A CN104550715B (en) | 2015-01-29 | 2015-01-29 | Method for manufacturing integral casting metal mould |
Publications (2)
| Publication Number | Publication Date |
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| CN104550715A CN104550715A (en) | 2015-04-29 |
| CN104550715B true CN104550715B (en) | 2017-01-11 |
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| CN201510046162.3A Expired - Fee Related CN104550715B (en) | 2015-01-29 | 2015-01-29 | Method for manufacturing integral casting metal mould |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834357A (en) * | 2016-04-07 | 2016-08-10 | 山东理工大学 | Rapid manufacturing method for resin casting die |
| CN106180564A (en) * | 2016-08-30 | 2016-12-07 | 上海艺极模具有限公司 | A kind of precision casting process of foaming mould |
| CN107116180A (en) * | 2017-03-15 | 2017-09-01 | 成都航欣工业科技有限公司 | A kind of differential pressure type aluminium alloy gypsum mould precision-investment casting method |
| CN109047656B (en) * | 2018-09-26 | 2020-09-08 | 上海艺极模具有限公司 | Manufacturing method of main mold of foaming mold and foaming mold |
| CN111300693B (en) * | 2020-04-09 | 2022-05-31 | 江苏九铸合金新材料有限公司 | Alloy die manufacturing process and die manufactured by same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5656756A (en) * | 1979-10-17 | 1981-05-18 | Toshiba Corp | Mold for precision casting and its production |
| JPS60170553A (en) * | 1984-02-10 | 1985-09-04 | Sintokogio Ltd | Production of air permeable and durable mold |
| CN101554645A (en) * | 2009-04-29 | 2009-10-14 | 山东理工大学 | Manufacturing method of lost foam casting foaming mold |
| CN102921884A (en) * | 2012-10-24 | 2013-02-13 | 山东理工大学 | Ceramic-type precision casting technology |
| CN102873276A (en) * | 2012-10-24 | 2013-01-16 | 山东理工大学 | Technology for producing casting core |
| CN103801658B (en) * | 2014-02-17 | 2016-01-06 | 山东旗开重型机械有限公司 | Ceramic shell manufacture method |
| CN104148580A (en) * | 2014-08-22 | 2014-11-19 | 山东宏马工程机械有限公司 | Quick production method of cast resin mold for producing wheel hub casting |
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Granted publication date: 20170111 Termination date: 20190129 |