CN104550715A - Method for manufacturing integral casting metal mould - Google Patents
Method for manufacturing integral casting metal mould Download PDFInfo
- Publication number
- CN104550715A CN104550715A CN201510046162.3A CN201510046162A CN104550715A CN 104550715 A CN104550715 A CN 104550715A CN 201510046162 A CN201510046162 A CN 201510046162A CN 104550715 A CN104550715 A CN 104550715A
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- China
- Prior art keywords
- mould
- casting
- die
- ceramic shell
- metal
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Classifications
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- 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 invention provides the manufacture method of a kind of monoblock type cast metal mould, belong to casting technology field.
Background technology
In traditional Metallic Casting Die & Mold manufacture process, general process is the metal die, the die assembly such as dead head mould and alignment pin that produce foundry goods respectively, and then carry out carrying out assembling formation casting mould to these assemblies on template, there is manufacturing process complexity in the manufacture method of this metal die, the shortcomings such as the production cycle is long, and manufacturing cost is high.Increasingly competitive due to current foundry industry, the manufacturing speed being badly in need of accelerating mould to respond the demand in market, so traditional Metallic Casting Die & Mold manufacture method is difficult to meet the growing market demand.
Summary of the invention
Content of the present invention is to provide a kind of deficiency that can overcome above-mentioned conventional metals casting manufacture method, simplified manufacturing technique, shorten the production cycle, reduce the manufacture method of the monoblock type cast metal mould of production cost, this kind of metals mold manufacturing method can utilize numerical-control processing method, ceramic precision casting method one-step casting goes out required Metallic Casting Die & Mold, can be used in the manufacture process of the Metallic Casting Die & Mold of carbon steel or aluminium material.Its technical scheme is:
A manufacture method for monoblock type cast metal mould, is characterized in that adopting following steps: 1) utilize polystyrene foamed material on numerically controlled processing equipment, process unitary mould die; 2) at the epoxide resin material of the manual brushing last layer of unitary mould molding surface 2 ~ 3mm and the mixture of the graphite powder system of mixing; 3) the unitary mould die scribbling mixture layer is again located on numerically controlled processing equipment, it is processed, by the design size of the dimensioned of unitary mould die to bulk metal mould; 4) the surperficial manual application last layer silastic-layer of unitary mould die after processing, carry out fixing with type with the gypsic horizon that 20 ~ 30mm is thick again on silastic-layer after silastic-layer solidifies, after then being removed by unitary mould die, obtain the punch for the manufacture of ceramic mould; 5) evenly apply the thick mixed slurry of last layer 30 ~ 40mm at convex mould surface, 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 into heating furnace, through 950 ~ 1150 DEG C, namely obtain ceramic shell after 30 ~ 35min roasting; 7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould, produces the upper impression of the casting mold matched with this upper impression with waterglass sand mold, and dead head is set; 8) by upper and lower for casting mold die cavity mould assembling and casting of molten metal, after molten metal solidifies, remove upper and lower die cavity, obtain bulk metal mould foundry goods, monoblock cast metal die can be obtained by after the polishing of bulk metal mould cast(ing) surface.
The manufacture method of described monoblock type cast metal mould, step 1) in process unitary mould die time, 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 appearance and size of casting die, dead head and alignment pin is increased the allowance of 1 ~ 2mm, after this casting mould graphics is generated procedure, polystyrene plates and numerically controlled processing equipment is utilized to process the unitary mould die of Metallic Casting Die & Mold.
The manufacture method of described monoblock type cast metal mould, step 2) in, mixture is made up of with the weight ratio of 100:38:15:250 ~ 350 at 280 ~ 400 object graphite powders epoxy resin, curing agent, flexibilizer and granularity, its epoxy resin is E44 type, curing agent is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
The manufacture method of described monoblock type cast metal mould, step 4) in, silastic-layer is mixed by the molded silicon rubber of RTV-2 model and dibutyl tin laurate, and both weight ratios are 100:2.
The manufacture method of described monoblock type cast metal mould, step 5) in, mixed slurry is mixed with the weight ratio of 260:100 ~ 120:0.5 ~ 0.8 by refractory material powder, Ludox and water reducer, wherein granularity >=280 object tekite sand selected by refractory material powder, Ludox adopts the alkaline silica sol of hot investment casting, and water reducer adopts wooden calcium sulfonate.
Compared with prior art, its advantage is in the present invention:
1, due to the die adopting the composite of polystyrene material, epoxy resin and graphite powder, Computerized Numerical Control processing technology manufactures unitary mould, so the process time of unitary mould die is short, the processing cost of mould is reduced.
2, utilize unitary mould die, silastic-layer and gypsum to manufacture punch, then manufacture ceramic shell by punch, technique is simple, ensure that the dimensional accuracy of mould.
3, obtain overall Metallic Casting Die & Mold after utilizing ceramic shell casting of molten metal, avoid the assembling procedure of mould, simplify manufacture process, reduce production cost.
Detailed description of the invention
Embodiment one, manufacture the monoblock type cast metal mould of carbon steel material, concrete steps are:
1) graphics of Metallic Casting Die & Mold is first drawn out, comprise mould shaping plate, casting die, dead head and alignment pin, and arrange according to the size of casting mould assembling, the appearance and size of casting die, dead head and alignment pin is increased the allowance of 1mm, after this casting mould graphics is generated procedure, polystyrene foam sheet and numerically controlled processing equipment is utilized to process the unitary mould die of Metallic Casting Die & Mold.
2) at the epoxide resin material of unitary mould molding surface manual brushing last layer 2mm and the mixture of the graphite powder system of mixing, mixture is made up of with the weight ratio of 100:38:15:250 at 280 object graphite powders epoxy resin, curing agent, flexibilizer and granularity, its epoxy resin is E44 type, curing agent is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
3) the unitary mould die scribbling mixture layer is again located on numerically controlled processing equipment, it is processed, by the design size of the dimensioned of unitary mould die to bulk metal mould.
4) the surperficial manual application last layer silastic-layer of unitary mould die after processing, silastic-layer is mixed by the molded silicon rubber of RTV-2 model and dibutyl tin laurate, and both weight ratios are 100:2; Carry out fixing with type with the gypsic horizon that 25mm is thick again on silastic-layer after silastic-layer solidifies, after then being removed by unitary mould die, obtain the punch for the manufacture of ceramic mould.
5) the thick mixed slurry of last layer 35mm is evenly applied at convex mould surface, mixed slurry is mixed with the weight ratio of 260:100 ~ 120:0.5 ~ 0.8 by refractory material powder, Ludox and water reducer, wherein granularity 280 object tekite sand selected by refractory material powder, Ludox adopts the alkaline silica sol of hot investment casting, water reducer adopts 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 into heating furnace, through 1150 DEG C, namely obtain ceramic shell after 35min roasting.
7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould, produces the upper impression of the casting mold matched with this upper impression with waterglass sand mold, and dead head is set.
8) carbon steel metal liquid is poured into a mould in upper and lower for casting mold die cavity mould assembling, after carbon steel metal liquid solidifies, remove upper and lower die cavity, obtain carbon steel material Integral casting die foundry goods, after surface finish, carbon steel material Integral casting die can be obtained.
Embodiment two, manufacture the monoblock type cast metal mould of aluminum alloy material, its concrete steps are:
1) graphics of Metallic Casting Die & Mold is first drawn out, comprise mould shaping plate, casting die, dead head and alignment pin, and arrange according to the size of casting mould assembling, the appearance and size of casting die, dead head and alignment pin is increased the allowance of 2mm, after this casting mould graphics is generated procedure, polystyrene foam sheet and numerically controlled processing equipment is utilized to process the unitary mould die of Metallic Casting Die & Mold.
2) at the epoxide resin material of unitary mould molding surface manual brushing last layer 3mm and the mixture of the graphite powder system of mixing, mixture is made up of with the weight ratio of 100:38:15:280 at 300 object graphite powders epoxy resin, curing agent, flexibilizer and granularity, its epoxy resin is E44 type, curing agent is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
3) the unitary mould die scribbling mixture layer is again located on numerically controlled processing equipment, it is processed, by the design size of the dimensioned of unitary mould die to bulk metal mould.
4) the surperficial manual application last layer silastic-layer of unitary mould die after processing, silastic-layer is mixed by the molded silicon rubber of RTV-2 model and dibutyl tin laurate, and both weight ratios are 100:2; Carry out fixing with type with the gypsic horizon that 30mm is thick again on silastic-layer after silastic-layer solidifies, after then being removed by unitary mould die, obtain the punch for the manufacture of ceramic mould.
5) the thick mixed slurry of last layer 40mm is evenly applied at convex mould surface, mixed slurry is mixed with the weight ratio of 260:120:0.8 by refractory material powder, Ludox and water reducer, wherein granularity 300 object tekite sand selected by refractory material powder, Ludox adopts the alkaline silica sol of hot investment casting, water reducer adopts 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 into heating furnace, through 950 DEG C, namely obtain ceramic shell after 30min roasting.
7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould, produces the upper impression of the casting mold matched with this upper impression with waterglass sand mold, and dead head is set.
8) cast aluminium molten metal is poured into a mould in lower impressions mould assembling on casting mold, after cast aluminium molten metal solidifies, remove ceramic shell and water-glass sand, obtain bulk metal mould foundry goods, monoblock cast aluminium metal die can be obtained by after the polishing of bulk metal mould cast(ing) surface.
8) by upper and lower for casting mold die cavity mould assembling and cast aluminum alloying metal liquid, after Al-alloy metal liquid solidifies, remove upper and lower die cavity, obtain aluminum alloy material Integral casting die foundry goods, after surface finish, aluminum alloy material Integral casting die can be obtained.
After testing, for carbon steel material or the casting mould of aluminum alloy material, the present invention is adopted to manufacture bulk metal casting mould, the process time of mould can be shortened, reduce the processing cost of mould, eliminate the assembling procedure of mould, simplify the manufacturing process of mould, ensure that the dimensional accuracy of mould, reduce production cost.
Claims (5)
1. a manufacture method for monoblock type cast metal mould, is characterized in that adopting following steps: 1) utilize polystyrene foamed material on numerically controlled processing equipment, process unitary mould die; 2) at the epoxide resin material of the manual brushing last layer of unitary mould molding surface 2 ~ 3mm and the mixture of the graphite powder system of mixing; 3) the unitary mould die scribbling mixture layer is again located on numerically controlled processing equipment, it is processed, by the design size of the dimensioned of unitary mould die to bulk metal mould; 4) the surperficial manual application last layer silastic-layer of unitary mould die after processing, carry out fixing with type with the gypsic horizon that 20 ~ 30mm is thick again on silastic-layer after silastic-layer solidifies, after then being removed by unitary mould die, obtain the punch for the manufacture of ceramic mould; 5) evenly apply the thick mixed slurry of last layer 30 ~ 40mm at convex mould surface, 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 into heating furnace, through 950 ~ 1150 DEG C, namely obtain ceramic shell after 30 ~ 35min roasting; 7) ceramic shell is used as the lower impressions of the casting mold of cast metal mould, produces the upper impression of the casting mold matched with this upper impression with waterglass sand mold, and dead head is set; 8) by upper and lower for casting mold die cavity mould assembling and casting of molten metal, after molten metal solidifies, remove upper and lower die cavity, obtain bulk metal mould foundry goods, monoblock cast metal die can be obtained by after the polishing of bulk metal mould cast(ing) surface.
2. the manufacture method of monoblock type cast metal as claimed in claim 1 mould, it is characterized in that: step 1) in process unitary mould die time, 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, by casting die, the appearance and size of dead head and alignment pin increases the allowance of 1 ~ 2mm, after this casting mould graphics is generated procedure, polystyrene plates and numerically controlled processing equipment is utilized to process the unitary mould die of Metallic Casting Die & Mold.
3. the manufacture method of monoblock type cast metal as claimed in claim 1 mould, it is characterized in that: step 2) in, mixture is made up of with the weight ratio of 100:38:15:250 ~ 350 at 280 ~ 400 object graphite powders epoxy resin, curing agent, flexibilizer and granularity, its epoxy resin is E44 type, curing agent is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
4. the manufacture method of monoblock type cast metal as claimed in claim 1 mould, is characterized in that: step 4) in, silastic-layer is mixed by the molded silicon rubber of RTV-2 model and dibutyl tin laurate, and both weight ratios are 100:2.
5. the manufacture method of monoblock type cast metal as claimed in claim 1 mould, it is characterized in that: step 5) in, mixed slurry is mixed with the weight ratio of 260:100 ~ 120:0.5 ~ 0.8 by refractory material powder, Ludox and water reducer, wherein granularity >=280 object tekite sand selected by refractory material powder, Ludox adopts the alkaline silica sol of hot investment casting, and water reducer adopts 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046162.3A CN104550715B (en) | 2015-01-29 | 2015-01-29 | Method for manufacturing integral casting metal mould |
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| CN104550715A true CN104550715A (en) | 2015-04-29 |
| CN104550715B 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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Cited By (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 |
| CN109047656A (en) * | 2018-09-26 | 2018-12-21 | 上海艺极模具有限公司 | A kind of production method and foaming mould of the master mold of foaming mould |
| CN111300693A (en) * | 2020-04-09 | 2020-06-19 | 江苏九铸合金新材料有限公司 | Alloy die manufacturing process and die manufactured by same |
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2015
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Patent Citations (7)
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| 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 |
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Cited By (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 |
| CN109047656A (en) * | 2018-09-26 | 2018-12-21 | 上海艺极模具有限公司 | A kind of production method and foaming mould of the master mold of foaming mould |
| CN111300693A (en) * | 2020-04-09 | 2020-06-19 | 江苏九铸合金新材料有限公司 | Alloy die manufacturing process and die manufactured by same |
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| CN104550715B (en) | 2017-01-11 |
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Granted publication date: 20170111 Termination date: 20190129 |