CN204381339U - Vacuum pressing and casting inner container of icebox mould top box - Google Patents
Vacuum pressing and casting inner container of icebox mould top box Download PDFInfo
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- CN204381339U CN204381339U CN201420796973.6U CN201420796973U CN204381339U CN 204381339 U CN204381339 U CN 204381339U CN 201420796973 U CN201420796973 U CN 201420796973U CN 204381339 U CN204381339 U CN 204381339U
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Abstract
A kind of vacuum pressing and casting inner container of icebox mould top box, it is characterized in that, comprise a vacuum sand box, die model is formed in described vacuum sand box, gap filling between described die model and vacuum sand box has dry sand, described die model inwall is provided with frozen iron blocks, described frozen iron blocks is distributed on the inwall of die model, negative-pressure pipeline is provided with in the inner chamber of described die model, be filled with dry sand between described negative-pressure pipeline and die model inwall, both sides, described die model upper end are provided with casting system model.Structure of the present invention is simple, and reasonable in design, adopt top box moulding of the present utility model, reduce the casting flaw of foundry goods, the quality of production and the qualification rate of cast product improve greatly.
Description
Technical field
The utility model relates to casting technology field, is specifically related to a kind of vacuum pressing and casting inner container of icebox mould top box.
Background technology
Household electrical appliances die for inner is the one of vacuum plastics sucking moulding, and product is very high to the smoothness requirements of mould surface.The quality of mould surface directly have influence on inner bag be shaped after surface quality and yield rate, therefore for liner forming mould, its forming surface roughness requirements is not more than Ra=0.8 μm, and surfacing, smooth, without sand holes, pore-free.
At present, general adopt Sand Moulding Process casting household electrical appliances die for inner, but large for appearance profile size, and interior cavity structure is more complicated and need the die for inner of laying cooling water pipe, and when using full sand casting, die cavity is not easy finishing, and the type that easily collapses.Sand mold heat transfer coefficient is less, and in die cavity, to be in time above liquidus longer for metallic solution temperature, so metal alloy easily forms coarse grain, organizes shrinkage porosite in process of setting, the surface roughness determining foundry goods post processing is to a certain extent higher.Meanwhile, easily occur shrinkage cavity and pore in cast product, cast(ing) surface easily produces sand holes and scab, therefore adopts sand casting die for inner yield rate lower.
In order to refinement cast-internal texture of coarse crystal, eliminate the casting flaw of cast(ing) surface, all-metal type cast mould can be adopted, but all-metal type manufacturing cost is high, the Operational preparation cycle is long, metal mold processing time consuming, effort, produces heavy castings more difficult.Permanent mold casting is particularly suitable for larger, the middle-size and small-size foundry goods of batch, and die for inner is generally single-piece production, without batch part, and casting dimension is larger, so use metal mold production mould can reach die surface quality requirement, but production cost is high, and the cycle is long.Consider from financial cost and technical difficulty, all-metal type technique is not suitable for the manufacture of die for inner strand.Moreover the model of punch is comparatively complicated, directly processing spill cannot moulding, and numerical control is shaping cannot process complicated concave shape.
Utility model content
It is higher that technical problem to be solved in the utility model is to provide a kind of mechanization degree, reduces labour intensity, the vacuum pressing and casting inner container of icebox mould top box improved the quality of products.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of vacuum pressing and casting inner container of icebox mould top box, comprise a vacuum sand box, die model is formed in described vacuum sand box, gap filling between described die model and vacuum sand box has dry sand, described die model inwall is provided with frozen iron blocks, described frozen iron blocks is distributed on the inwall of die model, negative-pressure pipeline is provided with in the inner chamber of described die model, be filled with dry sand between described negative-pressure pipeline and die model inwall, both sides, described die model upper end are provided with casting system model;
Described frozen iron blocks is designed to rectangular block, and its worksheet size is designed to three types:
No. 1 specification 200mm × 400mm;
No. 2 specification 100mm × 150mm;
No. 3 specification 50mm × 100mm;
Described frozen iron blocks leads fillet while carry out limit, and the large I of fillet carries out processing and fabricating as required, and frozen iron blocks surface roughness is at about Ra12.5; When pouring into a mould light-alloy, chill thickness δ=(1.0 ~ 2.0) D, D is foundry goods conformal wall thickness, and household electrical appliances die for inner wall thickness is generally about 15mm, so frozen iron blocks thickness is taken as 25mm.
Described frozen iron blocks has the inner chamber of a sealing, in this inner chamber, be injected with heat-absorbing material, and this heat-absorbing material heat storage coefficient is large, can absorb more heat, have stronger Quench ability.
Described heat-absorbing material is made up of the component of following parts by weight: polyvinyl alcohol 10 parts, sepiolite cashmere 10 parts, ooze 5 parts, water-absorbing resin 20 parts, nanometer silicon carbide 5 parts, distilled water 50 parts, Graphene 3 parts, metallic mineral ore 5 parts, boron carbide 5 parts, ammoniacal liquor 5 parts, ring ethyl ketone 3 parts, chlorinated paraffin wax 5 parts, palm oil 5 parts, cationic starch 5 parts, ceramic 5 parts, potassium sulfate 5 parts;
The preparation method of described ceramic is as follows:
1) be raw material with porous ceramics, take absolute ethyl alcohol as decentralized medium, the mass ratio of its Raw and ethanol is 1:30, ultrasonic disperse 1 hour on supersonic cleaning machine;
2) material through ultrasonic disperse being put into nylon ball grinder, take agate ball as abrading-ball, and ball material mass ratio is 6:1, is under the condition of 190 revs/min at rotating speed, continuous ball milling 2 hours in ball mill;
3) powder complete for ball milling is poured in powder dish together with agate abrading-ball, dry at 120 DEG C;
4) powder of drying is sieved, take out agate abrading-ball, then powder is ground, till the larger reunion of nothing.
The beneficial effects of the utility model are: the utility model structure is simple, reasonable in design, adopt top box moulding of the present utility model, reduce the casting flaw of foundry goods, the quality of production and the qualification rate of cast product improve greatly, chill process for cooling and vacuum casting process are combined, outer die cavity adopts the metal mold of frozen iron blocks structure, aluminium alloy is full of cast(ing) surface consecutive solidification under iron chill shock chilling effect after die cavity, cast(ing) surface setting rate is accelerated, dendrite has little time to grow up, so what obtain is tiny, fine and close crystalline structure.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1: a kind of vacuum pressing and casting inner container of icebox mould top box, comprise a vacuum sand box 1, die model 2 is formed in vacuum sand box 1, gap filling between die model 2 and vacuum sand box 1 has dry sand 3, die model 2 inwall is provided with frozen iron blocks 4, frozen iron blocks 4 is distributed on the inwall of die model 2, negative-pressure pipeline 5 is provided with in the inner chamber of die model 2, be filled with dry sand 3 between negative-pressure pipeline 5 and die model 2 inwall, both sides, die model 2 upper end are provided with casting system model 6; Frozen iron blocks 4 is designed to rectangular block, and its worksheet size is designed to three types: No. 1 specification 200mm × 400mm; No. 2 specification 100mm × 150mm; No. 3 specification 50mm × 100mm; Described frozen iron blocks leads fillet while carry out limit, and the large I of fillet carries out processing and fabricating as required, and frozen iron blocks surface roughness is at about Ra12.5; When pouring into a mould light-alloy, chill thickness δ=(1.0 ~ 2.0) D, D is foundry goods conformal wall thickness, and household electrical appliances die for inner wall thickness is generally about 15mm, so frozen iron blocks thickness is taken as 25mm.
Frozen iron blocks 4 has the inner chamber of a sealing, in this inner chamber, be injected with heat-absorbing material, and this heat-absorbing material heat storage coefficient is large, can absorb more heat, have stronger Quench ability.Heat-absorbing material is made up of the component of following parts by weight: polyvinyl alcohol 10 parts, sepiolite cashmere 10 parts, ooze 5 parts, water-absorbing resin 20 parts, nanometer silicon carbide 5 parts, distilled water 50 parts, Graphene 3 parts, metallic mineral ore 5 parts, boron carbide 5 parts, ammoniacal liquor 5 parts, ring ethyl ketone 3 parts, chlorinated paraffin wax 5 parts, palm oil 5 parts, cationic starch 5 parts, ceramic 5 parts, potassium sulfate 5 parts; Wherein the preparation method of ceramic is as follows:
1) be raw material with porous ceramics, take absolute ethyl alcohol as decentralized medium, the mass ratio of its Raw and ethanol is 1:30, ultrasonic disperse 1 hour on supersonic cleaning machine;
2) material through ultrasonic disperse being put into nylon ball grinder, take agate ball as abrading-ball, and ball material mass ratio is 6:1, is under the condition of 190 revs/min at rotating speed, continuous ball milling 2 hours in ball mill;
3) powder complete for ball milling is poured in powder dish together with agate abrading-ball, dry at 120 DEG C;
4) powder of drying is sieved, take out agate abrading-ball, then powder is ground, till the larger reunion of nothing.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a vacuum pressing and casting inner container of icebox mould top box, it is characterized in that, comprise a vacuum sand box, die model is formed in described vacuum sand box, gap filling between described die model and vacuum sand box has dry sand, described die model inwall is provided with frozen iron blocks, described frozen iron blocks is distributed on the inwall of die model, negative-pressure pipeline is provided with in the inner chamber of described die model, be filled with dry sand between described negative-pressure pipeline and die model inwall, both sides, described die model upper end are provided with casting system model.
2. a kind of vacuum pressing and casting inner container of icebox mould top box according to claim 1, it is characterized in that, described frozen iron blocks is designed to rectangular block, and its worksheet size is designed to three types: No. 1 specification 200mm × 400mm; No. 2 specification 100mm × 150mm; No. 3 specification 50mm × 100mm.
3. a kind of vacuum pressing and casting inner container of icebox mould top box according to claim 1, it is characterized in that, described frozen iron blocks carries out fillet process, and frozen iron blocks thickness is taken as 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796973.6U CN204381339U (en) | 2014-12-15 | 2014-12-15 | Vacuum pressing and casting inner container of icebox mould top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796973.6U CN204381339U (en) | 2014-12-15 | 2014-12-15 | Vacuum pressing and casting inner container of icebox mould top box |
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| Publication Number | Publication Date |
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| CN204381339U true CN204381339U (en) | 2015-06-10 |
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| CN201420796973.6U Active CN204381339U (en) | 2014-12-15 | 2014-12-15 | Vacuum pressing and casting inner container of icebox mould top box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525857A (en) * | 2014-12-15 | 2015-04-22 | 滁州金诺实业有限公司 | Upper box structure for refrigerator inner liner mold on the basis of V-process casting |
| CN111496194A (en) * | 2020-04-22 | 2020-08-07 | 陈万红 | Porous pouring component and production process thereof |
-
2014
- 2014-12-15 CN CN201420796973.6U patent/CN204381339U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525857A (en) * | 2014-12-15 | 2015-04-22 | 滁州金诺实业有限公司 | Upper box structure for refrigerator inner liner mold on the basis of V-process casting |
| CN104525857B (en) * | 2014-12-15 | 2016-07-13 | 滁州金诺实业有限公司 | Inner container of icebox mould box structure is cast based on V method |
| CN111496194A (en) * | 2020-04-22 | 2020-08-07 | 陈万红 | Porous pouring component and production process thereof |
| CN111496194B (en) * | 2020-04-22 | 2023-07-11 | 陈万红 | Porous pouring member and production process thereof |
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