CN109332594A - A kind of anti-connection method for being mingled with sprue cup of heavy castings - Google Patents
A kind of anti-connection method for being mingled with sprue cup of heavy castings Download PDFInfo
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- CN109332594A CN109332594A CN201811380011.1A CN201811380011A CN109332594A CN 109332594 A CN109332594 A CN 109332594A CN 201811380011 A CN201811380011 A CN 201811380011A CN 109332594 A CN109332594 A CN 109332594A
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- sprue cup
- section
- shell
- cup
- sprue
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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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
- B22C9/04—Use of lost patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of anti-connection method for being mingled with sprue cup of heavy castings, the heavy castings are as follows with the anti-connection method process for being mingled with sprue cup: production sprue cup, sprue cup step section wax pattern are shown in attached drawing 1,2.Sprue cup step section height e takes 10-20mm, and sprue cup and sprue cup step section are connected and shell processed, shell twine steel wire when coating 4-5 layers, sees attached drawing 3.Sprue cup is made by attached drawing 4 and cooperates section, keeps size Φ A identical as 2 size Φ a of attached drawing, size B is slightly shorter than b, and size E and e is identical.Sprue cup cooperation section wax part is connect and shell processed with casting wax part.Sprue cup and casting shell molds are connected with fire clay before casting.The anti-connection method for being mingled with sprue cup of the heavy castings, it can avoid causing increasing for field trash in casting completely in sprue cup connection procedure and in high temperature casting process, installation operation difficulty is reduced, metal material is separated well, improves the metallurgical quality of casting.
Description
Technical field
The present invention relates to the design of the structure of casting shell and applied technical fields, specifically provide a kind of heavy castings use
The anti-connection method for being mingled with sprue cup.
Background technique
Large size ceramic shell in the fabrication process, due to combining and shell quality problems processed, will lead to casting in casting process
Middle generation is mingled with, and influences the metallurgical quality of casting.General heavy castings since size is larger, the pour steel amount needed compared with
Greatly, and need faster poring rate, the height of usual sprue cup have reached or more than entire shell height, in wax part
Directly sprue cup is combined on casting ontology when combination, casting is will lead to and is added the left and right that doubles, therefore for heavy castings
The manufacture of shell, sprue cup are generally installed before casting.The installation of large-scale sprue cup, the general side using docking or grafting
Formula carries out, this kind of sprue cup connection type is relatively easy, but the field trashes such as overlap that will cause sprue cup lower edge are pacified in sprue cup
It lets off and falls into shell interior in journey, the refractory material of sprue cup lower edge may also be rushed in cast-internal and cause to press from both sides when being in addition poured
It is miscellaneous, lead to increasing for casting metallurgical imperfection, increase subsequent processing workload, extends delivery cycle.
It needs additionally to adjust water to the upper plane of sprue cup in sprue cup installation course by the way of docking or grafting
It is flat, it needs to be supported sprue cup in sprue cup and casting shell molds bonding process, avoid resistance between sprue cup and casting shell molds
When chamotte does not set up intensity, sprue cup changes with casting shell molds relative position.
By the way of sprue cup docking or grafting, the metal material recycling after casting near sprue cup exists asks greatly very much
It inscribes, the metal material of the sprue cup junction links together with refractory material after casting pouring, is difficult to be separated, cause several
Ten kilograms of metal charge cannot recycle, and cause the waste of metal material.
People are highly desirable to obtain a kind of anti-connection method for being mingled with sprue cup of heavy castings that technical effect is excellent.
Summary of the invention
The purpose of the present invention is provide a kind of heavy castings that technical effect is excellent with the anti-connection side for being mingled with sprue cup
Method.The metallurgical quality for improving casting, reduces the inclusion defect of casting.
The realization process of the anti-connection method for being mingled with sprue cup of the heavy castings are as follows: production sprue cup mold and wax
Part --- production sprue cup step section die and wax part --- connection sprue cup and sprue cup step section wax part --- production cast gate
Cup cooperation section die and wax part --- sprue cup cooperation section wax part group is soldered to casting sprue position --- sprue cup sub-assembly system
Shell --- preheating of heavy castings shell --- sprue cup shell is combined with heavy castings shell --- shell, casting.
The heavy castings are as follows with the anti-connection method process for being mingled with sprue cup:
1. making sprue cup, sprue cup step section die, and suppress wax pattern；Funnel shaped large size can be used in sprue cup mold
Tundish makes sprue cup step section die referring specifically to attached drawing 1, and referring specifically to attached drawing 2, sprue cup step section die is a ring
The wax part of shape, it is ensured that the bottom size of suitable for reading and sprue cup of sprue cup step section is identical, and one section of the cooperation of sprue cup step section
Height e takes 10-20mm；
The production of large-scale sprue cup mold and wax part, wax part upper and lower opening size and height are carried out using equipment such as large-scale wax injectors
Degree, is selected according to the size of be poured casting and the specification of casting equipment.For the wax material dosage for reducing large-scale wax part,
The large size sprue cup wax part should be hollow structure.Such as original sprue cup mold, it may not be necessary to make new die and directly use.
2. carrying out shell manufacture to large-scale sprue cup；General shell coats 6-10 layers, when shell coats 4-5 layers, is pouring
The side of cup and sprue cup step section winds finer wire, increases sprue cup intensity, avoids sprue cup in high temperature casting process
It is washed out, casting is caused to fail.Sprue cup thickness of the shell should control between 10-20mm；Avoid shell is too thick or too thin from causing
Installation process is difficult, referring specifically to attached drawing 3.
3. making sprue cup cooperates section die；Cooperation section shape is a structure that turns edge with interior tooth, with sprue cup step
Section is used cooperatively, and sprue cup cooperates section internal orifice size Φ A identical as sprue cup step section internal orifice size Φ a, and two turn edge structure
Sprue cup cooperation section size B is slightly shorter than the flat section size b of sprue cup step section, sprue cup step section and sprue cup in flat section size
Cooperate the height E and e that turns edge of section identical；Referring specifically to attached drawing 4.Entirely cooperate the position that turns edge that can closely connect after guaranteeing cooperation
Touch uniform force.
4. sprue cup cooperation section wax part is connect with casting ontology, it is ensured that connecting portion wax part surface is smooth, is completely embedded.
Section stickup layer of plastic film suitable for reading is cooperated to sprue cup, sprue cup in shell manufacturing process is avoided to cooperate section upper surface by fire resisting
Slurry covering；
5. the sprue cup shell for making shell and heavy castings shell are dewaxed, roasted；
6. sprue cup shell and heavy castings shell are combined before casting；Sprue cup step section is mounted on large-scale type
In the sprue cup cooperation section of shell；Installation course needs are handled with care, and shell is avoided to generate breakage of colliding with.
7. sprue cup and sprue cup cooperation section are attached with fire clay；Fire clay fills up outside sprue cup and sprue cup
Cooperate the gap between section, and ensures that fire clay is higher by sprue cup cooperation section 5-10mm；Referring specifically to attached drawing 5；
8. being combined the preheating of rear shell, casting.
The anti-connection method for being mingled with sprue cup of the heavy castings, can completely avoid since sprue cup connection causes to cast
Part Inclusion Problem, connection falls into shell interior with fire clay and causes to be mingled with when high temperature being avoided to be poured.Using this kind of connection type, type
Shell inner surface is all bright and clean inner wall, and fire clay avoids falling into shell completely in the external bonding that turns edge of sprue cup cooperation section
Portion.The casting quality of this kind of sprue cup connection type production is good, can reduce unnecessary Control of inclusions process in rear process,
Improve the yield rate of casting.In addition the connection type of this kind of sprue cup is used, it is ensured that sprue cup is connect by force with shell itself
Degree is high, keeps horizontal with casting itself after guarantee sprue cup connection, avoids sprue cup from influencing the poring rate of casting and avoid
Sprue cup bears in casting process incessantly molten steel pressure and is washed out.
Using this kind of sprue cup connection type, the inclusion defect of heavy castings can be significantly reduced, reduced by every casting
5 points of inclusion defect calculating, each defect processing expense are 1,000 yuan, and every casting reduces by 0.5 ten thousand yuan of defect processing expense.By every
Production heavy castings 200 calculating of year, can reduce by 1,000,000 yuan of casting defect processing cost.
The heavy castings carry out the production of sprue cup and sprue cup cooperation section with the anti-connection method for being mingled with sprue cup, can
Shell interior field trash is brought into avoid in sprue cup connection procedure and casting process, stablizes the quality of heavy castings.It solves
Since molten steel washing away at high temperature causes sprue cup connecting portion shell part surface layer to fall off, cast-internal is entered, is caused
Cast-internal is mingled with.The metallurgical quality that can effectively improve casting using this technology is reduced the delivery cycle of product, and production is reduced
Cost improves product competitiveness.
The anti-connection method for being mingled with sprue cup of the heavy castings, can reduce the placement time of sprue cup.This kind connection
Mode can guarantee that sprue cup is smoothly placed at the top of shell sprue, without the cooperation for additionally adjusting sprue cup and sprue
Angle can guarantee that entire sprue cup is reliable and stable in preheating and casting process since mating surface is larger.
The heavy castings not will cause increasing of being mingled with the anti-connection method for being mingled with sprue cup, improve the competition of product
Power reduces casting defect and handles the time, improve casting pouring quality, reduces the production cycle.
The anti-connection method for being mingled with sprue cup of the heavy castings, can avoid completely in sprue cup connection procedure and
Increasing for field trash in casting is caused in high temperature casting process, reduces sprue cup and operation difficulty is installed, separate metal material well
Material improves the metallurgical quality of casting, guarantees product delivery progress, reduces production cost.
The advantages of heavy castings sprue cup is placed is carried out with the anti-connection method for being mingled with sprue cup using the heavy castings
It is: sprue cup installation course can be avoided to cause the increased risk of casting metallurgical imperfection completely.In the manufacturing process of sprue cup, to pouring
Cup side wall increases steel wire and works out net, and sprue cup lateral stiffness can be improved, sprue cup is avoided to make during applied at elevated temperature completely
At by molten steel avulsion, lead to the problem of being poured failure.The system for sprue cup and sprue cup the cooperation section wax part that this programme relates generally to
Make form, it can be ensured that heavy castings sprue cup will not bring field trash into shell interior during the connection process.It is connected using this kind
What the metal charge after mode, sprue cup and the casting nearby of sprue cup cooperation section can be convenient is divided with shell with refractory material
From, it is ensured that material can be recycled effectively, avoid the waste for generating metal material.Using large-scale sprue cup wax part and turn edge
It is fabricated separately, the mode connected later, original mold can be made full use of, and improve on this basis, avoided
Mold is scrapped.It may insure that sprue cup and shell are completely embedded using this kind of connection type, avoid sprue cup during the bonding process
It needs to support and adjustment is horizontal.One layer of steel mesh is increased to side wall in sprue cup manufacturing process, cast gate cup sidewall can be dramatically increased
Intensity not will lead to casting sprue cup occurs in casting process and topples over and the problems such as sidewall rupture.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is sprue cup wax part schematic diagram；
Fig. 2 is sprue cup step section wax part schematic diagram；
Fig. 3 is the schematic diagram that sprue cup is bonded after step section painting shell；
Fig. 4 is that sprue cup cooperates section wax part schematic diagram；
Fig. 5 combines schematic diagram with heavy castings for sprue cup；Wherein, 10 be sprue cup, and 11 be fire clay, and 12 match for sprue cup
Section is closed, 13 be casting shell molds.
Specific embodiment
Embodiment 1
The realization process of the anti-connection method for being mingled with sprue cup of the heavy castings are as follows: production sprue cup mold and wax
Part --- production sprue cup step section die and wax part --- connection sprue cup and sprue cup step section wax part --- production cast gate
Cup cooperation section die and wax part --- sprue cup cooperation section wax part group is soldered to casting sprue position --- sprue cup sub-assembly system
Shell --- preheating of heavy castings shell --- sprue cup component shell is combined with heavy castings shell --- shell, casting.
The heavy castings are as follows with the anti-connection method process for being mingled with sprue cup:
1. making sprue cup, sprue cup step section die, and suppress wax pattern；Infundibulate can be used in sprue cup, referring specifically to
Attached drawing 1 makes sprue cup step section die, and referring specifically to attached drawing 2, sprue cup step section die is the wax part of an annular, it is ensured that
The bottom size of suitable for reading and sprue cup of sprue cup step section is identical, and one section of height e of sprue cup step section cooperation takes 10-
20mm；Sprue cup step section wax part 3 size Φ a suitable for reading is identical as 4 size Φ a holding of mouth under sprue cup, and height dimension e takes 10-
20mm, height dimension i can use 20-30mm.Size b selects 10-40mm, and Φ c size will make compared with (Φ a+2b) the big 1-5mm of size
Turn edge face band certain angle.Mouth 1 under sprue cup wax part and sprue cup step section wax part suitable for reading 3 are docked to together, by junction
Surface is plated, and is kept bright and clean.One layer of plastics are respectively pasted into sprue cup wax part upper surface 2 and sprue cup step section wax part lower surface 4
Cloth realizes that sprue cup is all covered with plastic cloth without the upper and lower surface of coating, avoids having refractory material during shell processed
Upper and lower surface is coated, sprue cup shell normal use is influenced.
2. carrying out shell manufacture to large-scale sprue cup；General shell coats 6-10 layers, when shell coats 4-6 layers, to pouring
The finer wire that cup and sprue cup step section side coiling diameter are 0.5-1.5mm, increases sprue cup intensity, sprue cup is avoided to exist
It is washed out in high temperature casting process, casting is caused to fail.Sprue cup thickness of the shell should control between 10-20mm；Avoid shell
It is too thick or too thin to cause installation process difficult, referring specifically to attached drawing 3.One layer of sprue cup outermost is slurry seal layer, to make cast gate
Sprue cup outer surface, is reverted to bright and clean surface by the outermost layer of cup, makes the sundries such as the clean and tidy, no float sand in sprue cup surface.Cast gate
It dewaxed, roasted after cup production.
3. making sprue cup cooperates section die；Cooperation section shape is a structure that turns edge with interior tooth, with sprue cup step
Section is used cooperatively, and sprue cup cooperates section internal orifice size Φ A identical as sprue cup step section internal orifice size Φ a, and two turn edge structure
Sprue cup cooperation section size B is slightly shorter than the flat section size b of sprue cup step section in flat section size, and sprue cup cooperates section and sprue cup
The height E and e that turns edge of step section is identical；Entirely cooperate the section that turns edge that can be in close contact uniform force, E and e after guaranteeing cooperation
Generally take 10-20mm；Φ A=Φ a；B=B+ (1-3) mm；Φ C=Φ A+2B+ (2-5) mm；D=15-20mm；α≤70°.It is high
Spending F can use 30-50mm, and height G can use 60-100mm；Φ H size and casting sprue are consistent or smaller 1-3mm.Specifically
Referring to attached drawing 4.
4. sprue cup cooperation section wax part is connect with casting ontology, it is ensured that connecting portion wax part surface is smooth, is completely embedded.
Section stickup layer of plastic film suitable for reading is cooperated to sprue cup, sprue cup in shell manufacturing process is avoided to cooperate section upper surface by fire resisting
Slurry covering.
5. sprue cup cooperation section is combined on heavy castings shell, the shell manufacture of heavy castings is carried out.Heavy castings
Shell is dewaxed after making, is roasted.
6. sprue cup and large-scale shell are combined before casting；Sprue cup step section is mounted on to the cast gate of large-scale shell
In cup cooperation section；Installation course needs are handled with care, and shell is avoided to generate breakage of colliding with.
7. sprue cup and sprue cup cooperation section are attached with fire clay；Fire clay fills up outside sprue cup and sprue cup
Cooperate the gap between section, and ensures that fire clay is higher by sprue cup cooperation section 5-10mm.The shell standing for being bonded sprue cup is stopped
It puts time requirement to be greater than for 24 hours, shell and sprue cup junction is made to establish intensity.Referring specifically to attached drawing 5；
8. being combined the preheating of rear shell, casting.The shell of sprue cup will be installed, the package on shell surface is carried out,
Preheating, the casting of shell are carried out later.
The anti-connection method for being mingled with sprue cup of the heavy castings, can completely avoid since sprue cup connection causes to cast
Part Inclusion Problem, connection falls into shell interior with fire clay and causes to be mingled with when high temperature being avoided to be poured.Using this kind of connection type, type
Shell inner surface is all bright and clean inner wall, and fire clay avoids falling into shell completely in the external bonding that turns edge of sprue cup cooperation section
Portion.The casting quality of this kind of sprue cup connection type production is good, can reduce unnecessary Control of inclusions process in rear process,
Improve the yield rate of casting.In addition the connection type of this kind of sprue cup is used, it is ensured that sprue cup is connect by force with shell itself
Degree is high, keeps horizontal with casting itself after guarantee sprue cup connection, avoids sprue cup from influencing the poring rate of casting and avoid
Sprue cup bears in casting process incessantly molten steel pressure and is washed out.
Using this kind of sprue cup connection type, the inclusion defect of heavy castings can be significantly reduced, reduced by every casting
5 points of inclusion defect calculating, each defect processing expense are 1,000 yuan, and every casting reduces by 0.5 ten thousand yuan of defect processing expense.By every
Production heavy castings 200 calculating of year, can reduce by 1,000,000 yuan of casting defect processing cost.
The heavy castings carry out the production of sprue cup and sprue cup cooperation section with the anti-connection method for being mingled with sprue cup, can
Shell interior field trash is brought into avoid in sprue cup connection procedure and casting process, stablizes the quality of casing casting.It solves
Since molten steel washing away at high temperature causes shell part surface layer to fall off, cast-internal is entered, cast-internal is caused to be mingled with.It adopts
The metallurgical quality that can effectively improve casting with this technology reduces the delivery cycle of product, reduces production cost, and it is competing to improve product
Strive power.
The anti-connection method for being mingled with sprue cup of the heavy castings, can reduce the placement time of sprue cup.This kind connection
Mode can guarantee that sprue cup is smoothly placed at the top of shell sprue, without the cooperation for additionally adjusting sprue cup and sprue
Angle can guarantee that entire sprue cup is reliable and stable in preheating and casting process since mating surface is larger.
The heavy castings not will cause increasing of being mingled with the anti-connection method for being mingled with sprue cup, improve the competition of product
Power reduces casting defect and handles the time, improve casting pouring quality, reduces the production cycle.
The present invention provides a kind of anti-connection methods for being mingled with sprue cup of heavy castings, can avoid connecting in sprue cup completely
Increasing for field trash in casting is caused in termination process and in high temperature casting process, is reduced installation operation difficulty, is separated well
Metal material improves the metallurgical quality of casting, guarantees product delivery progress, reduces production cost.
Claims (1)
1. a kind of anti-connection method for being mingled with sprue cup of heavy castings, it is characterised in that: the heavy castings are with preventing being mingled with pouring
The connection method process of cup is as follows:
1. making sprue cup, sprue cup step section die, and suppress wax pattern；Sprue cup cup mold is made, sprue cup is made
Step section die, sprue cup step section die are the wax part of an annular, it is ensured that under the suitable for reading and sprue cup of sprue cup step section
Mouth size is identical, and one section of height e of sprue cup step section cooperation takes 10-20mm；
2. carrying out shell manufacture to large-scale sprue cup；Shell coats 6-10 layers, when shell coats 4-5 layers, in sprue cup and pours
The side of cup step section winds finer wire, and sprue cup thickness of the shell controls between 10-20mm；
3. making sprue cup cooperates section die；Sprue cup cooperates section shape to be a structure that turns edge with interior tooth, pours with sprue cup
Cup step section is used cooperatively, and sprue cup cooperates section internal orifice size Φ A identical as sprue cup step section internal orifice size Φ a, and two turn over
Sprue cup cooperation section size B is slightly shorter than the flat section size b of sprue cup step section along the flat section size of structure, and sprue cup turns edge
Height E is identical with sprue cup cooperation section height e；
4. sprue cup cooperation section wax part is connect with casting ontology, section stickup layer of plastic film suitable for reading is cooperated to sprue cup, is kept away
Exempt from sprue cup cooperation section upper surface in shell manufacturing process to be covered by plastic refractory.
5. the sprue cup shell for making shell and heavy castings shell are dewaxed, roasted.
6. sprue cup shell and heavy castings shell are combined before casting；Sprue cup step section is mounted on large-scale shell
Sprue cup cooperates in section；
7. sprue cup and sprue cup cooperation section are attached with fire clay；Fire clay fills up outside sprue cup to be cooperated with sprue cup
Gap between section, and ensure that fire clay is higher by sprue cup cooperation section 5-10mm；
8. being combined the preheating of rear shell, casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811380011.1A CN109332594B (en) | 2018-11-20 | 2018-11-20 | Connecting method of impurity clamping preventing pouring cup for large casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811380011.1A CN109332594B (en) | 2018-11-20 | 2018-11-20 | Connecting method of impurity clamping preventing pouring cup for large casting |
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| Publication Number | Publication Date |
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| CN109332594A true CN109332594A (en) | 2019-02-15 |
| CN109332594B CN109332594B (en) | 2021-01-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110238351A (en) * | 2019-07-22 | 2019-09-17 | 义乌约德新材料有限公司 | A kind of ultrathin type Piston mould running channel |
| CN112496314A (en) * | 2020-11-25 | 2021-03-16 | 吴军辉 | Automobile part casting production processing device convenient for material injection |
| CN113814355A (en) * | 2021-10-19 | 2021-12-21 | 中国航发沈阳黎明航空发动机有限责任公司 | Supporting system with exhaust and blocking and mixing functions |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238351A (en) * | 2019-07-22 | 2019-09-17 | 义乌约德新材料有限公司 | A kind of ultrathin type Piston mould running channel |
| CN110238351B (en) * | 2019-07-22 | 2021-03-23 | 临沂盛德机械有限公司 | Ultra-thin type piston mould waters |
| CN112496314A (en) * | 2020-11-25 | 2021-03-16 | 吴军辉 | Automobile part casting production processing device convenient for material injection |
| CN113814355A (en) * | 2021-10-19 | 2021-12-21 | 中国航发沈阳黎明航空发动机有限责任公司 | Supporting system with exhaust and blocking and mixing functions |
| 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 |
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|---|---|
| CN109332594B (en) | 2021-01-22 |
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