CN102773469B - Pouring cup manufacture process - Google Patents
Pouring cup manufacture process Download PDFInfo
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- CN102773469B CN102773469B CN201110119599.7A CN201110119599A CN102773469B CN 102773469 B CN102773469 B CN 102773469B CN 201110119599 A CN201110119599 A CN 201110119599A CN 102773469 B CN102773469 B CN 102773469B
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- sand
- external mold
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Abstract
The invention discloses a pouring cup and a pouring cup manufacture process. The pouring cup comprises a metal outer mold and a pre-coated sand coating layer with even thickness. The manufacture process includes preparing a mold core, a positioning base plate and a filter screen; arranging the positioning base plate on a reference plane; pouring an outer mold with metal materials, heating the outer mold through a heating furnace/ ladle temperature or cooling the temperature of a poured mold to be a sand coating temperature directly; fixing the outer mold on the positioning base plate, and placing a mold core to form sand filling space between the outer mold and the mold core; pouring pre-coated sand into the sand filling space until the sand filling space is filled to form the sand coating layer; and taking out the mold core, and mounting the filter screen at the bottom of the sand coating layer. The pouring cup manufacture process is high in production efficiency, small in personal factor effect on the operation and sand usage amount, and improves the operation environment greatly; and the prepared pouring cup is high in strength and smooth in inner cavity surface, and surface blister defects of castings manufactured through the process are reduced.
Description
Technical field
The present invention relates to a kind of casting device and its manufacture method, particularly relate to a kind of cup manufacture method.
Background technology
Casting technique be unable to do without cup, and traditional cup manufacture craft is: in thinner iron film, adopt tide mould sand hand moulding to make.But, the cup adopting this kind of technique to make easily presents the thin uneven situation in thick top, bottom, and surface quality is poor, molding sand calorific intensity is low, is used in casting process and easily causes sand hole defect, thus the casting quality poor stability produced, percent defective is high.And for tide mould sand hand moulding manufacture craft: on the one hand, the production efficiency of this kind of technique is low, sand using amount large, the human factor impact of operation is larger; On the other hand, before cast, cup foundary weight is pushed down, otherwise runout can be caused by molten iron buoyancy lifts by cup when pouring into a mould, be unfavorable for mechanization production in enormous quantities like this; Again on the one hand, owing to having a certain amount of swelling scholar and coal dust in tide mould sand, so cause the working environment of operating personnel also poor.
Summary of the invention
Main purpose of the present invention is that the surface quality existing for the cup in order to solve prior art is poor, the technical problem of the low sand hole defect thus easily caused in casting process of molding sand calorific intensity.
In order to solve the problems of the technologies described above, the invention provides a kind of cup, comprise external mold and inwall, described external mold is metal mold external mold, and described inwall is that the thickness formed by precoated sand covers layer of sand uniformly.
Described cup, wherein, described in cover layer of sand thickness be 6mm ~ 15mm.
Described cup, wherein, the bottom of described inwall is provided with foam ceramic filter.
Main purpose of the present invention also adopts to solve prior art the technical problem that the production efficiency existing for tide mould sand hand moulding technique making cup is low, sand using amount large, the impact of operation human factor is comparatively large and operating personnel's working environment is poor.
In order to solve the problems of the technologies described above, the present invention also provides a kind of cup manufacture craft, completes as follows.
Step one, be ready to make core, positioning chassis and screen pack needed for cup.
Described positioning chassis as locating surface, and is arranged on described locating surface by step 2, a selection datum plane.
Step 3, adopt metal material cast external mold, and utilize the temperature of heating furnace/casting ladle to be heated to described external mold to cover sand temperature or the external mold after directly controlling cast to be cooled to and to cover sand temperature.
Step 4, to be fixed on reaching the described external mold covering sand temperature on described positioning chassis, and it is inner described core to be put into described external mold, thus between described external mold and described core, forms an annular back-up sand space.
Step 5, utilization are filled with sand instrument and pour into precoated sand in described back-up sand spaces, cover sand complete when precoated sand fills up and tamps described filling sand space, and now precoated sand is formed in the inner side of described external mold and covers layer of sand.
Step 6, take out core and in the described bottom covering layer of sand, screen pack be installed.
Described cup manufacture craft, wherein, also need arrange locating hole at the center of described positioning chassis in step one, and the bottom in described step 4, described core being put into described core during described external mold inside coordinates with described locating hole.
Described cup manufacture craft, wherein, also need at the circular orientation seam of the upper surface setting of described positioning chassis around described locating hole in step one, described in described step 4, the bottom of external mold is placed in the positioning spigot on described positioning chassis.
Described cup manufacture craft, wherein, covering sand temperature described in step 3 is 210 DEG C ~ 250 DEG C.
Described cup manufacture craft, wherein, the thickness covering layer of sand described in step 5 is 6mm ~ 15mm.
Described cup manufacture craft, wherein, takes out core when covering 102s ~ 160s after sand in step 6.
Described cup manufacture craft, wherein, in step 5 when pouring into precoated sand in described back-up sand space with external mold described in the continuous vibration of wooden stick, be beneficial to tamping of precoated sand.
The present invention has following beneficial effect, cup manufacture craft production efficiency of the present invention is higher, the impact of operation human factor is less, cost of manufacture is low, molding sand aspect auxiliary equipment and instrument is few, sand using amount is few, simultaneously due in sand without bentonite and coal dust, the pollution of environment is reduced, the working environment of operating personnel improves greatly, and utilizes the waste heat after cast to carry out covering sand molding, the high and economize energy of efficiency.The cup intensity be made by above-mentioned technique is high, and in casting process, security is high; Cup surface of internal cavity is smooth, and the cast(ing) surface sand holes defect that utilizes it to produce reduces and easy to operate; Cup external mold also can Reusability, life-span long; The screen pack arranged bottom cup can pushing off the slag effectively, prevents cast(ing) surface from occurring cinder hole defect.
Accompanying drawing explanation
Fig. 1 is the sectional view of cup of the present invention.
Fig. 2 is the sectional view of external mold and core and positioning chassis fit structure in cup manufacture craft of the present invention.
Fig. 3 is the Casting Equipment sectional view applying cup of the present invention.
Detailed description of the invention
Cup of the present invention is applied on casting production process.In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Refer to shown in Fig. 1, cup 1 of the present invention comprises external mold and inwall, can also comprise the screen pack 13 being arranged on described inwall bottom.Described external mold is metal mold external mold 11, and described metal mold external mold 11 can adopt the making such as grey cast-iron, spheroidal graphite cast-iron or cast steel, and described screen pack 13 can be foam ceramic filter.Described inwall is that the thickness formed by precoated sand covers layer of sand 12 uniformly, the described thickness covering layer of sand 12 can be 6mm ~ 15mm, the covering layer of sand and can prevent from coming off that the external mold 11 that causes is bonding with cast gate to be scrapped owing to covering layer of sand in casting process of this kind of thickness, the more important thing is that can prevent from covering sand pours die cavity and cause sand hole of cast defect.
Incorporated by reference to consulting shown in Fig. 2, the manufacture craft of aforementioned cup 1, completes especially by following steps:
Step one, be ready to make core 2, positioning chassis 3 and screen pack 13 needed for cup.Shape and the required interior space shape formed of described cup 1 of described core 2 are suitable, and the center of described positioning chassis 3 can arrange locating hole 31, and the upper surface of described positioning chassis 3 also can arrange the circular orientation seam 32 around described locating hole 31.
Described positioning chassis 3 as locating surface, and is placed on described locating surface by step 2, a selection datum plane.
Step 3, the cast of employing metal material form described external mold 11, described metal material can be grey cast-iron, spheroidal graphite cast-iron or cast steel etc. and can meet intensity and cover the metal material of sand temperature requirement, and utilize the temperature of heating furnace/casting ladle to be heated to described external mold 11 to cover sand temperature or the external mold after directly controlling cast to be cooled to and to cover sand temperature, described in cover sand temperature and can be 210 DEG C ~ 250 DEG C.When needing the external mold after controlling cast to be cooled to cover sand temperature to carry out covering sand with the waste heat after utilizing cast, the cup after pouring into a mould need be carried out cleaning in order and puts, and utilizing infrared thermometer equitemperature measuring instrument measuring tempeature.
Step 4, be fixed on described positioning chassis 3 by reaching the described external mold 11 covering sand temperature, and described core 2 is put into the inside of described external mold 11, thus between described external mold 11 and described core 2, form the annular back-up sand space 4 that a thickness can be 6mm ~ 15mm.Concrete placement situation can be and coordinated with described locating hole 31 bottom of described core 2, and the bottom of described external mold 11 is placed in described positioning spigot 32.
Step 5, utilization are filled with sand instrument and pour into precoated sand in described back-up sand spaces 4, simultaneously with external mold 11 described in the continuous vibration of wooden stick, be beneficial to tamping of precoated sand, sand is covered complete when precoated sand fills up and tamps described filling sand space 4, now precoated sand is formed in the inner side of described external mold 11 and certain thicknessly covers layer of sand 12, described in cover layer of sand 12 thickness can be 6mm ~ 15mm.
Step 6, core 2 can be taken out when covering 102s ~ 160s after sand, otherwise core 2 described in overlong time being difficult to take out, then in the described bottom covering layer of sand 12, screen pack 13 being installed.
In order to above-mentioned cup manufacture craft is better described, below enumerate several specific embodiment to be described, in following several embodiments, basic step in manufacture craft is constant, just outside mold materials classification, cover sand temperature, cover selection that sand layer thickness and core take out opportunity on difference to some extent.
Embodiment one: pouring into a mould the metal material that external mold 11 adopts in step 3 is grey cast-iron HT250, and covering sand temperature is 250 DEG C; The thickness covering layer of sand 12 in step 4 in annular back-up sand space 4 and step 5 is 12mm; The opportunity of taking out core 2 in step 6 is for covering 130s after sand.
Embodiment two: pouring into a mould the metal material that external mold 11 adopts in step 3 is grey cast-iron HT250, and covering sand temperature is 210 DEG C; The thickness covering layer of sand 12 in step 4 in annular back-up sand space 4 and step 5 is 8mm; The opportunity of taking out core 2 in step 6 is for covering 110s after sand.
Embodiment three: pouring into a mould the metal material that external mold 11 adopts in step 3 is grey cast-iron HT250, and covering sand temperature is 230 DEG C; The thickness covering layer of sand 12 in step 4 in annular back-up sand space 4 and step 5 is 10mm; The opportunity of taking out core 2 in step 6 is for covering 120s after sand.
Embodiment four: pouring into a mould the metal material that external mold 11 adopts in step 3 is cast steel ZG310-570, and covering sand temperature is 230 DEG C; The thickness covering layer of sand 12 in step 4 in annular back-up sand space 4 and step 5 is 10mm; The opportunity of taking out core 2 in step 6 is for covering 140s after sand.
Embodiment five: pouring into a mould the metal material that external mold 11 adopts in step 3 is spheroidal graphite cast-iron QT450-10, and covering sand temperature is 230 DEG C; The thickness covering layer of sand 12 in step 4 in annular back-up sand space 4 and step 5 is 10mm; The opportunity of taking out core 2 in step 6 is for covering 150s after sand.
Again further combined with consulting shown in Fig. 3, for the above-mentioned cup 1 made being applied to structure sectional view during casting technique, first need to have covered after in sand, sandbox 5 and outer sandbox 6 assemble, locked by retaining mechanism 7, then outside down gate 61 place of sandbox 6 upper end bonding on the cup 1 made can carry out pouring practice.
Cup manufacture craft production efficiency of the present invention is higher, the impact of operation human factor is less, cost of manufacture is low, molding sand aspect auxiliary equipment and instrument is few, sand using amount is few, simultaneously due in sand without bentonite and coal dust, the pollution of environment is reduced, the working environment of operating personnel improves greatly, and utilize the waste heat after cast to carry out covering sand molding, the high and economize energy of efficiency.The cup intensity be made by above-mentioned technique is high, and in casting process, security is high; Cup surface of internal cavity is smooth, and the cast(ing) surface sand holes defect that utilizes it to produce reduces and easy to operate; Cup external mold also can Reusability, life-span long; The screen pack arranged bottom cup can pushing off the slag effectively, prevents cast(ing) surface from occurring cinder hole defect.
But, the foregoing is only better possible embodiments of the present invention, not limit the scope of the invention, therefore all utilizations description of the present invention and the change of the equivalent structure done by accompanying drawing content, be all included in protection scope of the present invention.
Claims (7)
1. a cup manufacture craft, is characterized in that, completes as follows:
Step one, be ready to make core, positioning chassis and screen pack needed for cup;
Described positioning chassis as locating surface, and is arranged on described locating surface by step 2, a selection datum plane;
Step 3, adopt metal material cast external mold, and utilize the temperature of heating furnace/casting ladle to be heated to described external mold to cover sand temperature or the external mold after directly controlling cast to be cooled to and to cover sand temperature;
Step 4, to be fixed on reaching the described external mold covering sand temperature on described positioning chassis, and it is inner described core to be put into described external mold, thus between described external mold and described core, forms an annular back-up sand space;
Step 5, utilization are filled with sand instrument and pour into precoated sand in described back-up sand spaces, cover sand complete when precoated sand fills up and tamps described filling sand space, and now precoated sand is formed in the inner side of described external mold and covers layer of sand;
Step 6, take out core and in the described bottom covering layer of sand, screen pack be installed.
2. cup manufacture craft according to claim 1, it is characterized in that, also need arrange locating hole at the center of described positioning chassis in step one, the bottom in described step 4, described core being put into described core during described external mold inside coordinates with described locating hole.
3. cup manufacture craft according to claim 2, it is characterized in that, also need at the circular orientation seam of the upper surface setting of described positioning chassis around described locating hole in step one, described in described step 4, the bottom of external mold is placed in the positioning spigot on described positioning chassis.
4. cup manufacture craft according to claim 1, is characterized in that, covering sand temperature described in step 3 is 210 DEG C ~ 250 DEG C.
5. cup manufacture craft according to claim 1, is characterized in that, the thickness covering layer of sand described in step 5 is 6mm ~ 15mm.
6. cup manufacture craft according to claim 1, is characterized in that, takes out core when covering 102s ~ 160s after sand in step 6.
7. cup manufacture craft according to claim 1, is characterized in that, in step 5 when pouring into precoated sand in described back-up sand space with external mold described in the continuous vibration of wooden stick, be beneficial to tamping of precoated sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110119599.7A CN102773469B (en) | 2011-05-10 | 2011-05-10 | Pouring cup manufacture process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110119599.7A CN102773469B (en) | 2011-05-10 | 2011-05-10 | Pouring cup manufacture process |
Publications (2)
| Publication Number | Publication Date |
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| CN102773469A CN102773469A (en) | 2012-11-14 |
| CN102773469B true CN102773469B (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110119599.7A Active CN102773469B (en) | 2011-05-10 | 2011-05-10 | Pouring cup manufacture process |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302254B (en) * | 2013-06-26 | 2015-10-14 | 安徽祝成动力机械有限公司 | A kind of punching block covers sand casting method |
| CN103495724A (en) * | 2013-10-21 | 2014-01-08 | 邵宏 | Pouring cup used for full-automatic gravity pouring machine |
| CN103551513B (en) * | 2013-11-14 | 2016-08-17 | 无锡夕阳康科技有限公司 | Make the method and apparatus without fracture precoated sand cup |
| CN104209501B (en) * | 2014-08-28 | 2016-06-15 | 宁夏共享铸钢有限公司 | The making method of a kind of cast steel monoblock type sprue cup capable of circulation |
| CN104972060A (en) * | 2015-06-30 | 2015-10-14 | 柳州金特新型耐磨材料股份有限公司 | Lost foam sprue cup |
| CN106111905A (en) * | 2016-06-23 | 2016-11-16 | 长兴万顺保温材料有限公司 | A kind of preparation method of cup |
| CN114054681A (en) * | 2021-11-18 | 2022-02-18 | 内蒙古第一机械集团股份有限公司 | Pouring basin fixing device for sand casting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1535167A (en) * | 1974-12-19 | 1978-12-06 | Boc International Ltd | Crucible |
| US4795066A (en) * | 1982-09-23 | 1989-01-03 | Kaiser Steel Corporation | Ladle nozzle insert |
| CN2496581Y (en) * | 2001-09-13 | 2002-06-26 | 熊鹰 | Multifunctional ladle seat for casting |
| CN101116907A (en) * | 2006-08-02 | 2008-02-06 | 孙爱平 | Casting quantified filtering pouring cup |
| CN101716651A (en) * | 2009-08-06 | 2010-06-02 | 上海华新合金有限公司 | Method for casting turbo supercharger volute shell casting for large ship |
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2011
- 2011-05-10 CN CN201110119599.7A patent/CN102773469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1535167A (en) * | 1974-12-19 | 1978-12-06 | Boc International Ltd | Crucible |
| US4795066A (en) * | 1982-09-23 | 1989-01-03 | Kaiser Steel Corporation | Ladle nozzle insert |
| CN2496581Y (en) * | 2001-09-13 | 2002-06-26 | 熊鹰 | Multifunctional ladle seat for casting |
| CN101116907A (en) * | 2006-08-02 | 2008-02-06 | 孙爱平 | Casting quantified filtering pouring cup |
| CN101716651A (en) * | 2009-08-06 | 2010-06-02 | 上海华新合金有限公司 | Method for casting turbo supercharger volute shell casting for large ship |
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| CN102773469A (en) | 2012-11-14 |
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