CN104525856A - Modeling process of upper box for refrigerator inner liner mold on the basis of V-process casting - Google Patents
Modeling process of upper box for refrigerator inner liner mold on the basis of V-process casting Download PDFInfo
- Publication number
- CN104525856A CN104525856A CN201410778955.XA CN201410778955A CN104525856A CN 104525856 A CN104525856 A CN 104525856A CN 201410778955 A CN201410778955 A CN 201410778955A CN 104525856 A CN104525856 A CN 104525856A
- Authority
- CN
- China
- Prior art keywords
- parts
- sand
- mold
- ball
- iron blocks
- 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.)
- Granted
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a modeling process of an upper box for a refrigerator inner liner mold on the basis of V-process casting. The modeling process is characterized by comprising the following process steps: (1) directly processing out a needed convex-mold shape according to the shape of the actual inner liner, and putting a processed convex mold on a positioning template; (2) covering a vacuum sand box on the well-placed convex mold, taking out a model main body in a negative-pressure state, damaging movable blocks of a model, and taking out the movable blocks of the model without damaging the shape of a sand mold and a thin film, and manufacturing into a disposable convex mold; and (3) placing a well-designed casting system on the concave mold, wrapping a plastic thin film on the casting system, simultaneously placing a cold iron block and sand on the inner wall of the concave mold simultaneously, placing a negative-pressure pipeline into a concave model so as to improve the modeling strength, adding dry sand, placing on a vibratory compacting platform after the sand is completely added, pressurizing and forming the upper box.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of based on V method casting inner container of icebox mould top box formative technology.
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.
Summary of the invention
It is higher that technical problem to be solved by this invention is to provide a kind of mechanization degree, reduces labour intensity, and that improves the quality of products casts inner container of icebox mould top box formative technology based on V method.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of based on V method casting inner container of icebox mould top box formative technology, comprise following processing step:
1) directly process the punch shape of needs according to actual inner bag shape, the punch machined is positioned on positioning mould board;
2) on the punch be well placed, cover vacuum sand box, under negative pressure state, die body is taken out, then take out after the loose piece breakage of model, shape and the film of sand mold can not be destroyed, be made into disposable die; Punch vacuum moulding is utilized to go out a die, simple;
3) on die, be well placed the running gate system of design, running gate system will wrap up plastic sheeting, simultaneously on the inwall of die, while put frozen iron blocks limit to add sand, negative-pressure pipeline is put into matrix, to increase moulding intensity simultaneously, then dry sand is added, after adding sand, be put into plain bumper jolt ramming, then extrusion forming.
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 invention has the beneficial effects as follows: the present invention adopts secondary formative technology to achieve the moulding of complicated shape, general complicated shape because cannot the demoulding problem and cannot realize, the present invention make use of secondary moulding, decomposes the method for disposable die cavity, achieves the moulding of complex-shaped surface mould; And by increasing frozen iron blocks, and changing the structure of traditional cold iron block, more heat can be absorbed.
Accompanying drawing explanation
Fig. 1 is punch of the present invention and positioning mould board position assumption diagram;
Fig. 2 is that punch of the present invention covers vacuum sand box structure chart;
Fig. 3 is that die body of the present invention takes out state diagram;
Fig. 4 is that frozen iron blocks of the present invention puts completion status;
Fig. 5 is that the present invention places injection system structure figure;
Fig. 6 is finished product structure figure of the present invention.
In figure: 1. positioning mould board; 2. vacuum sand box; 3. frozen iron blocks; 4. running gate system model; 5. dry sand; 6. negative-pressure pipeline; 7. punch.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See Fig. 1-6:
A kind of based on V method casting inner container of icebox mould top box formative technology, comprise following processing step:
1) directly process the punch shape of needs according to actual inner bag shape, the punch 7 machined is positioned on positioning mould board 1;
2) on the punch 7 be well placed, cover vacuum sand box 2, under negative pressure state, die body is taken out, then take out after the loose piece breakage of model, shape and the film of sand mold can not be destroyed, be made into disposable die; Punch 7 vacuum moulding is utilized to go out a die, simple;
3) on die, be well placed the running gate system model 4 of design, running gate system model 4 will wrap up plastic sheeting, simultaneously on the inwall of die, while put frozen iron blocks 3 limit to add sand, negative-pressure pipeline 6 is put into matrix, to increase moulding intensity simultaneously, add dry sand 5, after adding sand, be put into plain bumper jolt ramming, then extrusion forming.
Described frozen iron blocks 3 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 3 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 3 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.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.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 defined by appending claims and equivalent thereof.
Claims (3)
1., based on a V method casting inner container of icebox mould top box formative technology, it is characterized in that, comprise following processing step:
1) directly process the punch shape of needs according to actual inner bag shape, the punch machined is positioned on positioning mould board;
2) on the punch be well placed, cover vacuum sand box, under negative pressure state, die body is taken out, then take out after the loose piece breakage of model, shape and the film of sand mold can not be destroyed, be made into disposable die;
3) on die, be well placed the running gate system of design, running gate system will wrap up plastic sheeting, simultaneously on the inwall of die, while put frozen iron blocks limit to add sand, negative-pressure pipeline is put into matrix, to increase moulding intensity simultaneously, then dry sand is added, after adding sand, be put into plain bumper jolt ramming, then extrusion forming.
2. according to claim 1 based on V method casting inner container of icebox mould top box formative technology, it is characterized in that, described frozen iron blocks has the inner chamber of a sealing, in this inner chamber, be injected with heat-absorbing material;
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.
3. according to claim 1 based on V method casting inner container of icebox mould top box formative technology, 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;
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 Ra12.5, and frozen iron blocks thickness is taken as 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778955.XA CN104525856B (en) | 2014-12-15 | 2014-12-15 | Inner container of icebox mould top box formative technology is cast based on V method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778955.XA CN104525856B (en) | 2014-12-15 | 2014-12-15 | Inner container of icebox mould top box formative technology is cast based on V method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525856A true CN104525856A (en) | 2015-04-22 |
| CN104525856B CN104525856B (en) | 2016-07-06 |
Family
ID=52841587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410778955.XA Active CN104525856B (en) | 2014-12-15 | 2014-12-15 | Inner container of icebox mould top box formative technology is cast based on V method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104525856B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786364A (en) * | 2015-04-23 | 2015-07-22 | 清华大学 | Greenware body moulding method |
| CN106180569A (en) * | 2016-09-07 | 2016-12-07 | 滁州市鑫鼎机械模具制造有限公司 | A kind of casting inner container of icebox mould top box formative technology |
| CN114472804A (en) * | 2022-02-11 | 2022-05-13 | 安徽合力股份有限公司合肥铸锻厂 | Process for casting rear seat of large-scale loader of ductile iron by V method |
| CN114603088A (en) * | 2022-03-02 | 2022-06-10 | 广西清隆机械制造有限公司 | Modeling process for efficiently producing engine flywheel plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5280219A (en) * | 1975-12-27 | 1977-07-05 | Teruo Uehara | Ship body casting method |
| CN1759953A (en) * | 2005-10-27 | 2006-04-19 | 贾林夫 | Molding method for manufacturing ingot mold through vacuseal molding machine |
| CN102773409A (en) * | 2012-07-24 | 2012-11-14 | 滁州金诺实业有限公司 | Method for manufacturing casting blank of die for inner containers of household appliances on basis of metal cavity with cold iron structure |
| CN103658525A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | V-method mold for casting electronic appliance mold casting blank |
| CN103658527A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | Vacuum seal modeling method for refrigerator cold closet plastic uptake mould casting |
| CN103658526A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | Technology utilizing cooled vacuum molding to obtain refrigerator inner container template aluminium alloy cast |
-
2014
- 2014-12-15 CN CN201410778955.XA patent/CN104525856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5280219A (en) * | 1975-12-27 | 1977-07-05 | Teruo Uehara | Ship body casting method |
| CN1759953A (en) * | 2005-10-27 | 2006-04-19 | 贾林夫 | Molding method for manufacturing ingot mold through vacuseal molding machine |
| CN102773409A (en) * | 2012-07-24 | 2012-11-14 | 滁州金诺实业有限公司 | Method for manufacturing casting blank of die for inner containers of household appliances on basis of metal cavity with cold iron structure |
| CN103658525A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | V-method mold for casting electronic appliance mold casting blank |
| CN103658527A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | Vacuum seal modeling method for refrigerator cold closet plastic uptake mould casting |
| CN103658526A (en) * | 2013-11-26 | 2014-03-26 | 滁州金诺实业有限公司 | Technology utilizing cooled vacuum molding to obtain refrigerator inner container template aluminium alloy cast |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786364A (en) * | 2015-04-23 | 2015-07-22 | 清华大学 | Greenware body moulding method |
| CN104786364B (en) * | 2015-04-23 | 2017-03-01 | 清华大学 | A kind of method of ceramic idiosome molding |
| CN106180569A (en) * | 2016-09-07 | 2016-12-07 | 滁州市鑫鼎机械模具制造有限公司 | A kind of casting inner container of icebox mould top box formative technology |
| CN114472804A (en) * | 2022-02-11 | 2022-05-13 | 安徽合力股份有限公司合肥铸锻厂 | Process for casting rear seat of large-scale loader of ductile iron by V method |
| CN114603088A (en) * | 2022-03-02 | 2022-06-10 | 广西清隆机械制造有限公司 | Modeling process for efficiently producing engine flywheel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104525856B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773409B (en) | Method for manufacturing casting blank of die for inner containers of household appliances on basis of metal cavity with cold iron structure | |
| CN103736928B (en) | A kind of evaporative pattern running gate system of gear box | |
| CN104525856B (en) | Inner container of icebox mould top box formative technology is cast based on V method | |
| CN104525855B (en) | Metal mold technique based on V method casting inner container of icebox mould strand | |
| CN104525858B (en) | Vacuum pressing and casting electronic appliance mold aluminium alloy castings built-in pipe technique | |
| CN104128564A (en) | Casting process of sand-lined metal mold cast nodular iron hinge lug | |
| CN102310162A (en) | Novel technology for casting engine cylinder body by lost foam | |
| CN103418746A (en) | Technique for casting gray cast iron thin-wall pipe fitting evanescent die | |
| CN103447463A (en) | Method for improving finished product rate of evaporated pattern casting of holes and inner cavities | |
| CN103658504A (en) | Novel process for sand casting of aluminium alloy casting blanks | |
| CN104525857B (en) | Inner container of icebox mould box structure is cast based on V method | |
| CN105537522B (en) | A kind of Negative casting of EPC uses the process of internal densener | |
| CN205522298U (en) | High -precision injection mold | |
| CN102744389B (en) | Dead head-free casting technology | |
| CN204381339U (en) | Vacuum pressing and casting inner container of icebox mould top box | |
| CN212191148U (en) | Thin-wall shell mould casting sand box | |
| CN103223465B (en) | A kind of casting method of zinc alloy lost foam | |
| CN102974760B (en) | Lost foam casting device and casting method | |
| CN102218507A (en) | Lost foam casting technology leading sands to be compacter | |
| CN107309394A (en) | Long cylinder ironcasting casting die of the inner chamber with muscle and casting method | |
| CN105689644A (en) | Lost foam water-cooling casting process | |
| CN102310163A (en) | Lost foam casting method of engine gear chamber | |
| CN203330361U (en) | Novel axle housing sandbox | |
| CN111408689B (en) | Bucket tooth shell mold casting method | |
| CN202180172U (en) | Lost foam for casting radial inner-hole pipe shaped cast |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |