CN106559990B - The manufacturing equipment of iron casting, the manufacturing method of iron casting and iron casting - Google Patents
The manufacturing equipment of iron casting, the manufacturing method of iron casting and iron casting Download PDFInfo
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- CN106559990B CN106559990B CN201580003017.5A CN201580003017A CN106559990B CN 106559990 B CN106559990 B CN 106559990B CN 201580003017 A CN201580003017 A CN 201580003017A CN 106559990 B CN106559990 B CN 106559990B
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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
- B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/06—Melting-down metal, e.g. metal particles, in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D47/00—Casting plants
- B22D47/02—Casting plants for both moulding and casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
There is provided one kind not will lead to productivity reduction or manufacturing cost rising, iron casting, the manufacturing method of iron casting and the manufacturing equipment of iron casting that can independently implement plating or enamel processing in its surface zero defect with the specification of iron casting.In the manufacturing method of iron casting, after being moulded by being depressurized to molding sand to mold, the casting molten metal in mold.To being depressurized in mold, until the temperature of the casting formed by the molten metal is down to A1Below transition point.The manufacturing equipment of iron casting includes at least one mold；The frame transmission device for keeping mold mobile；Suction device is fixed at least one depressurized in mold when mold stops；At least one the movable suction device for replacing fixed suction device to move while decompression in mold when mold is mobile；And to the temperature sensor that the product surface temperature of casting is measured.
Description
Technical field
The present invention relates to the manufacturing equipments of iron casting, the manufacturing method of iron casting and iron casting.
Background technique
As the technology for assigning corrosion resistance, wear resistance or heat resistance etc. for the surface to metal product, it is known to
Plating and enamel processing.In addition, in the case where plating is implemented on the surface to iron casting and enamel is handled,
Graphite present in surface it has been known that there is iron casting and free cementite can lead to the problem of bad influence to these processing, use
It is being carried out always from previous in the technology or research for solving the problems, such as this.
In patent document 1, it discloses the following contents: the surface of steel products being cleaned and activates it
Afterwards, the catalyst that is promoted to reduction reaction is assigned to carry out plating.
In patent document 2, it discloses the following contents: pure iron thin plate being made to be pasted on the surface of the mold contacted with cast member
The nodular cast iron of melting is poured into mold by portion, dissolves the pure iron thin plate of mould surface, thus on the surface of casting
It is upper to form the superficial layer for hindering graphite to be formed, later, carry out zinc-plated.
It in patent document 3, discloses the following contents: impregnating cast iron materials in plating liquid, apply in this case super
The surface of cast iron materials is cleaned in acoustic vibration, and the graphite that will be present in its surface crushes and it is made to be discharged into plating liquid
In, later, the plating overlay film with dispersity comprising graphite is formed on the surface thereof.
It points out in non-patent literature 1, in the enamel processing implemented to cast iron, the graphite near cast(ing) surface is oxidized
And the carbon monoxide and carbon dioxide generated is the reason of forming air bubble-shaped defect.
In non-patent literature 2, disclose the following contents: the metal structure for generating defect is thicker big stone by slow cooling
Ink and be quenched in contrast to this and hamper growth of graphite tissue both, in order to improve these tissue and at enamel
Heat treatment is just de-gassed before reason can be more effective.
In non-patent literature 3, disclose the following contents: the position of coarse graphite structure, ledeburite steel crystallization are precipitated
Position, because enamel processing when temperature increase due to decomposed cementite so as to cause temper carbon crystallization be precipitated position generate it is more
Defect forms low-carbon saturation degree to improve this situation to prevent the coarsening of graphite, improves phosphorus content to prevent ledeburite
Steel crystallization is precipitated, and the decomposition of ledeburite steel when enamel being inhibited to handle, in addition, before carrying out enamel processing, to progress
The casting of above-mentioned countermeasure is de-gassed heat treatment, whereby, can significantly inhibit air bubble-shaped defect.
It in patent document 4 and 5, discloses the following contents: raw in Cast Iron Surface tissue in the manufacture of enamel cast iron
It is less at defect is steeped in the case where without graphite linings；It is steeped in the case where the cast iron of low-carbon and the flake graphite cast iron of high silicon ingredient
Defect is less；Even the case where high-carbon and low silicon ingredient, by addition titanium the generation for steeping defect can also reduced.
It according to above content, can be apparent from: implement plating or enamel on the surface to iron casting
When processing, graphite and free cementite near cast(ing) surface can generate bad influence.In addition, in order to inhibit by graphite and trip
The bad influence generated from cementite, there are following methods: by casting carry out processing chemically, physical, hot come
Remove graphite etc.；The overlay film of not graphitiferous is formed about on the surface of casting after casting；In the mold table of contacting molten metal
Face is poured in the state of being pasted with pure iron thin plate, and cast(ing) surface is made to be formed about no graphite linings；And pass through control casting
Chemical component and add alloy to make cast(ing) surface be formed about no graphite linings etc..
It is additionally needed respectively by the processing carried out chemically, physical, hot to casting come the method for removing graphite etc.
After casting by the process of the removings such as graphite near cast(ing) surface.Furthermore, it is necessary to be set in detail in conjunction with each cast product
Treatment conditions.Therefore, the reason of making productivity decline, increase production cost can be become.It is attached in cast(ing) surface after the casting
It is close to be formed in the not method of the overlay film of graphitiferous, the graphite in the surface of the cast iron materials immediately below overlay film be not removed and with regard to this
Sample there is.Therefore, the close property between graphite and plating overlay film is affected, and generates corrosion from the part sometimes, makes
Neighbouring plating overlay film expansion or removing.
It is poured in the state that pure iron thin plate is pasted on the mould surface contacted with molten metal in casting table
Face is formed about in the method for no graphite linings, needs to carry out matchingly to form thin plate with cast shape in advance, then by thin plate
Paste the operation of mould surface.For this purpose, applicable shape is only limitted to extremely simple shape, in addition, pasting the operations such as thin plate
The problem of will lead to productivity decline.It is formed about by controlling the chemical component of casting and adding alloy on the surface of casting
The scope of application that the method for no graphite linings will lead to product is limited, and therefore, according to required specification, being using this method can not
Can.
On the other hand, the casting being poured in the state of decompression in the mold for using the molding sand without binder
In mould method of moulding, it is known to be formed about the flowing of air in casting to improve the metal structure and machine of manufactured casting
The technology of tool property.For example, in patent document 6, disclosing a kind of casting method, it is close on the ground plane of master mold component
Shield member is set, and in the granular substance of the inner or outer side of shield member filling heat resistance, makes the particle of the heat resistance
Object side becomes negative pressure and shield member is made to be adsorbed in above-mentioned heat resistance particulate matter side, then, makes the demoulding of master mold component with shape
At cavity, and casting molten metal in this cavity, which is characterized in that it is molten at this after the casting of above-mentioned molten metal terminates
Melt metallic surface layer start solidification when, above-mentioned heat resistance particulate matter side import air.
In addition, in patent document 7, disclosing a kind of casting method, which is characterized in that in the silica sand using drying regime
Come casting molten metal in the mold that is moulded, after the molten metal solidification of injection, flowing therethrough air will be melted
The silica sand for the drying regime that the casting material that metal freezing is formed surrounds, to be cooled down to casting material.
These technologies be in order to solve to be held in the mold of decompression state after being cast in the case where cannot be very via air
The cooling velocity of heat transfer, mold is carried out well the problem of significant decrease compared with other method of moulding and is developed, they
1200 DEG C in the setting temperature as cast iron nearby release decompression state and import atmosphere or compressed air, to be added
The effect of fast cooling velocity.But these methods all by prevent graphite crystallization be precipitated and make cementite crystallization be precipitated for the purpose of, and
It is not to be developed for the purpose of the decarburization near cast(ing) surface.Therefore, in the cast(ing) surface produced with such method
Nearby there is the free cementites that bad influence is generated to plating or enamel processing, therefore, even if to these cast(ing) surfaces
Implement plating or enamel processing, can not obtain good overlay film, the fact that can by above patent document 1 to 5 and
The content of non-patent literature 1 to 3 clearly obtains.
Patent document 1: Japanese Patent Laid-Open 8-170178 bulletin
Patent document 2: Japanese Patent Laid-Open 2001-200350 bulletin
Patent document 3: Japanese Patent Laid-Open 2004-143552 bulletin
Patent document 4: Japanese Patent Laid-Open 2015-42774 bulletin
Patent document 5: Japanese Patent Laid-Open 2015-42775 bulletin
Patent document 6: Japanese Patent Laid-Open No. Sho 58-224066 bulletin
Patent document 7: Japanese Patent Laid-Open No. Sho 63-10062 bulletin
Safe " cast object ほ う ろ う " the ceramic industry association will 67 of 1: Sakurai well of non-patent literature collects No. 759 nineteen fifty-nines (Sakurai Thailand, " casting
Part enamel ", ceramic industry association magazine, 67 collection 759, nineteen fifty-nine)
Non-patent literature 2: brave hero " cast iron kitchen article へ カ ラ ー enamel Lang construction technology " the Yan Shou Ken industry of rice barn
Technology セ ン タ ー research report the 10th 2003 (rice barn is bravely male, " the colored enamel construction technology of cast iron kitchen article ",
The county Yan Shou industrial technology center research report, No. 10,2003)
Non-patent literature 3: rice barn brave male, vegetarian rattan abundant its " カ ラ ー enamel Lang envelope viability To and Pot The base cast object
Property と surface treatment influences " (rice barn was bravely male, vegetarian in 2004 for Yan Shou Ken industrial technology セ ン タ ー research report o.11
Rattan it is abundant it, " being related to the property of the substrate casting of the compactness of colored enamel overlay film and the influence of surface treatment ", the county Yan Shou industry
Technique center research report, o.11,2004)
Summary of the invention
The technical problems to be solved by the invention
For the above reasons, the prior art all there is a problem of various.Therefore, the present invention in view of the above problems and
Make, and it is an object of the present invention to provide it is a kind of not will lead to productivity decline or manufacturing cost rise, can be with the specification of iron casting independently
The iron casting of plating or enamel processing, the manufacturing method and cast iron of iron casting are not defectively implementated on its surface
The manufacturing equipment of casting.
Technical scheme applied to solve the technical problem
To solve the above subject and reaching purpose, it is a feature of the present invention that include: by molding sand depressurized come pair
The process that mold is moulded；The process of casting molten metal in mold；And to depressurized in above-mentioned mold, until by
The temperature for the casting that the molten metal is formed is reduced to A1Transition point process below.
In addition, being poured in the mold that of the invention depressurized to molding sand is molded into manufacture iron casting
Comprising: at least one mold in the manufacturing equipment of iron casting；The frame transmission device of mobile mold；Work as mold
Suction device is fixed at least one depressurized in mold when stopping；And when the mold time of cell-phone replaces fixed suction device
At least one mobile movable suction device is carried out while decompression in mold, keeps mold anti-by frame transmission device
It is moved and is stopped again, until the temperature of casting is down to A in the mold after casting1Below transition point.
In addition, it is a feature of the present invention that in the mold for being depressurized to molding sand and being poured in the mold that is molded into
It in method of moulding, is persistently depressurized in mold, until the temperature of the casting after casting in casting mold is down to A1Below transition point
Until, it is manufactured whereby.
Invention effect
According to the present invention, can make to generate plating or enamel processing the graphite oxygen near the cast(ing) surface of bad influence
Change, and the generation of free cementite can be prevented, therefore, defect when can easily and inexpensively handle plating or enamel
Inhibited.
In addition, according to the present invention, it is not necessary that the chemical component of casting is controlled or is added alloy, it therefore, can be with
Wall thickness or quality requirements of casting etc. are independently applied.
Detailed description of the invention
Fig. 1 is the schematic diagram for indicating the structure of the manufacturing equipment of iron casting of first embodiment.
Fig. 2 is to indicate that movable suction device follows the schematic diagram of the state after the mold movement that frame transmission device is transmitted.
Fig. 3 be indicate just to return to original position fixation suction device and movable suction device state schematic diagram.
Fig. 4 is the substantially cross-sectional view indicated around the mold of second embodiment.
Fig. 5 is the substantially cross-sectional view indicated around the mold of third embodiment.
Specific embodiment
Referring to figure to the manufacturing method of iron casting of the invention, iron casting and the manufacturing equipment of iron casting
Preferred embodiment be described in detail.The manufacturing method of iron casting of the invention is to using the molding sand without binder
Mold carry out decompression rear molding, casting, later, persistently to being depressurized in mold, until being built in the temperature of the casting of mold
Degree is down to A1Below transition point.
It is an object of the present invention to by make in mold continual reduction in pressure persistently have to cast(ing) surface the state of air circulation come
Make graphite and free cementite oxidation that bad influence is generated in plating or enamel processing, thus near cast product surface layer
Produce no graphite linings.For this reason, it is necessary to above-mentioned state is kept, it is until being down to the temperature for being fully completed eutectoid reaction, i.e., sub-
A in steady systemcmA in transition point or systems stabilisation1Transition point temperature below.In the present invention, it is as the material of object
Cast iron, and it is not carried out the behaviour for the Hirschfeld-Klinger reaction for forcing quenching etc. that can cause the metastable system in iron carbons bianry alloy state diagram
Make, therefore, make continual reduction in pressure in mold, until temperature is down to the A for terminating temperature as the eutectoid reaction of systems stabilisation1Transition point
Below.
In addition, for the A of the magnetic transformation point as iron2Transition point, crystalline texture become the center of area from body-centered cubic lattic
The A of cubic lattice3Transition point and crystalline texture become the A of body-centered cubic lattic again from face-centered cubic lattice again4Transition point, point
Eutectic or the eutectoid reaction of graphite or cementite are not generated in each transition point temperature below.Therefore, even in mold
It persistently carries out decompression and releases decompressed state and insufficient after each transition point temperature below until reaching.
The casting being poured in the state of decompression in the mold for using the molding sand without binder of the invention
In mould method of moulding, there is the decompression mold method of moulding (hereinafter referred to as " V technique ") as mold molding, pouring technology,
It includes to tighten to be sticked on the surface of master mold Die and mould plate and sets the shield member abutting process of shield member；In the shielding for being close to setting
Mounting moulds framework and to the process of molding sand of the filling without binder in molding framework on component；The upper surface of molding sand is carried out
It is closed and make mould framework in become negative pressure, thus so that shield member is adsorbed in molding sand side and make shield member shape work
Sequence；The process for demoulding master mold Die and mould plate from shield member and being molded into half mold with molding face；With with half mold
Another half mold being molded into the same manner is molded and the process that forms casting cavity；Molten metal is injected into casting cavity
The process (casting process) of (molten metal)；And the process for hereafter releasing the intracorporal negative pressure state of molding frame and taking out casting.
Additionally it contained lost-foam casting method, is being embedded in the type without binder for the mold being made of the foam of resin
In sand and make inner pressure relief in the mold that shapes, the state of decompression is kept to be poured while making the foamed molten of resin
Note.
In the present invention, in order to form decarburized layer, it is necessary to form be the state of free flow of air always on the surface of casting.
But if being formed makes the decompressed pressure of mold terrifically close to the state of atmospheric pressure, molding sand can fall in cast(ing) surface, therefore,
There is always the state of free flow of air on the surface that casting can not be formed in.On the other hand, if being formed approaches decompressed pressure terrifically
There is always the state of free flow of air on the state of vacuum, the then surface that can be formed in casting, and still, molten metal can infiltrate into molding sand
In gap between grain, thus the reason of becoming significant metal infiltration defect.Therefore, decompressed pressure be preferably at -70kPa to -
Between 10kPa.
In addition, the unlimited type of molding sand in the present invention, can be silica sand, olivine sand, chromite sand, zircon sand, ceramic base
Artificial sand etc..But in order to nearby carry out decarburization to cast(ing) surface under a reduced pressure, the aeration when being filled as mold
High molding sand is preferable, it is therefore preferable that the less molding sand of the ratio of the discontented 53 μm of particles of diameter in molding sand.Diameter discontented 53 in molding sand
The excessive molding sand of the ratio of μm particle because of the aeration of mold deficiency can make that sufficient air cannot be generated near cast(ing) surface
Flowing, so that decarburized layer cannot be formed.Therefore, the ratio of discontented 53 μm of the particle of diameter is preferably 10% or less.
The temperature for the casting for being built in mold is set to be down to A after casting1Time needed for until below transition point is according to product
Quality and wall thickness will be different.The temperature for the casting for being built in mold is set to be down to A after there is casting1Below transition point
Until required frame number fixation suction device and movable suction device iron casting manufacturing equipment in, the casting in mold
The surface temperature of part C cannot be measured directly, and therefore, the temperature of casting is down to A1The required time needs until below transition point
Confirmed on the basis of having preset casting condition by casting process simulation, or needs to carry out tentative casting to reality
It is down to A1Time needed for below transition point is measured to be confirmed.
(first embodiment)
Fig. 1 is the schematic diagram for indicating the structure of iron casting manufacturing equipment of first embodiment.
Iron casting manufacturing equipment 1 is the equipment that iron casting is manufactured using V technique, is included using without bonding
The mold 2 of the molding sand of agent；Mold platform 3；Frame transmission device 4；Fixed suction device 5；And movable suction device 6.In addition, casting
Mould 2 is the mold for forming mold by molding sand in molding framework.Here, Fig. 1 is the time indicated before mold 2 will move
The state of the fixation suction device 5 of point and movable suction device 6.When mold 2 stops, by fixed suction device 5 to each mold 2
Being attracted and makes to depressurize in mold 2, when mold 2 is mobile, fixed suction device 5 is detached from, it replaces, movable suction device 6
It is close to mold 2 and mold 2 is attracted, thus to is depressurized in mold 2.Hereafter, movable suction device 6 follows mold 2
It is moved, after mobile, movable suction device 6 is detached from, and is replaced, and fixed suction device 5 is close to mold 2 and to mold
2 are attracted, thus to depressurizing in mold 2.Fixed suction device 5 and movable suction device 6 are at least above-mentioned with making
The temperature that movement carries out the casting for being built in mold to after being poured is down to A1The number of frame number needed for until below transition point.
In Fig. 1, mold 2 is mobile from the right side of figure towards left side, and the mold 2 of right end is in the state after just casting, left end
Mold 2 be in and be depressurized to make the temperature for the casting for being built in mold after casting to be down to A1State until below transition point.
In order to keep the mold 2 after casting mobile to the mold 2 of right end, frame transmission device 4 and the mold 2 that is placed with both ends respectively first
Mold platform 3 is close to respectively, and mold platform 3 is fixed from both ends.In addition, mold 2 is by being close to via piping 7 and not
The fixation suction device 5 of the attraction source connection of diagram keeps decompression state.In addition, via the hose 8 that can move freely through with
The movable suction device 6 of attraction source connection (not shown) is close to mold 2, depressurizes to mold 2, at the same time, fixed to attract
Device 5 is detached from.
Next, frame transmission device 4 drives, keep the mold 2 (molding frame) for being placed in mold platform 3 mobile.Fig. 2 is to indicate
Movable suction device 6 follows with frame transmission device 4 schematic diagram of the state after the movement of mold 2 transmitted.Movable suction device 6
It is to be connect by bindiny mechanism (not shown) with frame transmission device 4, therefore, the movement for following frame transmission device 4 is moved.
In this way, mold 2 is even on the move also to keep decompression state by movable suction device 6.
Next, if the mobile end of a frame distance, the mold 2 of left end is handled upside down by handling device (not shown)
To the cooling process again as next procedure or tear frame process open.In addition, in right end, using having suction device (not shown)
Handling device is carried from the molding process as preceding working procedure carrys out new non-pouring frame.In addition, fixed suction device 5 is close to mold
2, mold 2 is depressurized, at the same time, movable suction device 6 is detached from.In this way, being able to maintain mold by fixed suction device 5
2 decompression state.Hereafter, frame transmission device 4 and mold platform 3 are close to be released from, and frame transmission device 4 returns to original position, with
Accompany, movable suction device 6 also moves, to return to original position.Fig. 3 is to indicate just to return to the fixed attraction dress after original position
Set the schematic diagram of the state of 5 and movable suction device 6.
When returning to original position, casting placed by a series of mold platform 3 being fixed together is close to by frame transmission device 4
The number of mould 2 depends on after carrying out moulding required time i.e. period and casting to mold making the casting for being built in mold
Temperature is down to A1Time until below transition point.For example, and being confirmed or being led to casting process simulation if the period is 3 minutes/frame
Crossing after carrying out the tentative casting for casting and acquiring makes the temperature for the casting for being built in mold be down to A1Until below transition point
Time is 15 minutes, then keeps decompression state until making the temperature for the casting for being built in mold be down to A after casting1Below transition point
The number of required mold 2 is 15 ÷ 3=5 frames.
In addition, being close to casting placed by a series of mold platform 3 being fixed together by frame transmission device 4 in Fig. 3
Mould 2 is all cooled under the situation for keeping decompression state by fixed suction device 5 and movable suction device 6, but is not limited only to
This.For example, if keeping decompression state as described above until the temperature for the casting for being built in mold after casting is down to A1Transition point with
The number of mold 2 needed for until lower is 5 frames, then after the 6th frame can also be used as cooling process again and not to casting
Mould passes through frame transmission device 4 in the case where being attracted keep mold mobile.
(second embodiment)
Second embodiment is related to the structure around the mold 2 of the manufacturing equipment 1 of the iron casting of first embodiment.Ginseng
Second embodiment is illustrated according to attached drawing.In the structure of the manufacturing equipment of the iron casting of present embodiment, to first
The different part of embodiment is illustrated.Other parts are identical with first embodiment, therefore referring to above description, save herein
Slightly its explanation.
The manufacturing equipment 1 of iron casting have mold 2, mold platform 3, frame transmission device 4, fixed suction device 5 and
Movable suction device 6.Fig. 4 is the schematic sectional view around the mold 2 of second embodiment.Fig. 4 indicates V technique mold, by
It is constituted using the mold 2 of the molding sand 9 without binder, fixed suction device 5, temperature sensor 10 and control device 11, and
In be inserted into temperature sensor 10 and contact casting C in mold 2 the most thick position of wall thickness state.Temperature sensor 10
It is waited right above the most thick position of the wall thickness of the casting C outside mold 2 in advance.The holding fix of temperature sensor 10 is due to product
Therefore difference stores horizontal direction position and the distance at the most thick position of each wall thickness in storage device (not shown) in advance
The height of datum level moves temperature sensor 10 by control device 11 according to the information.In addition, mold 2 is via fixation
Suction device 5 and piping 7 and be connected to attraction source (not shown).
If being poured the information input controller 11 terminated, temperature sensor 10 removes device using insertion (not shown)
And it is inserted into and contacts the most thick position of heavy wall of the casting C in mold 2.Whereby, the temperature information of casting C Surface is entered control
In device 11.
If control device 11 is reduced to according to the product surface temperature that the infomation detection from temperature sensor 10 goes out casting C
A1Transition point is hereinafter, then control device 11 makes fixed suction device 5 be detached from mold 2, releasing decompression state.Next, using not
The insertion of diagram removes device and pulls away temperature sensor 10.
In addition, the method for the information input controller 11 that casting terminates is not particularly limited, for example, can pour
The button being connected on control device 11 is pressed by operator to input casting and terminate this information after note, it can also
Use control device 11 right to be measured with temperature of the non-contacting thermometer to upper surface air-flow (Japanese: raising above Ga り)
The temperature information of upper surface air-flow is monitored, and rises to the temperature of molten metal according to upper surface air-flow to judge casting knot
Beam, to make the insertion contact of temperature sensor 10.
(third embodiment)
Third embodiment is identical as second embodiment, is related to the manufacturing equipment 1 of the iron casting of first embodiment
Mold 2 around structure.Referring to attached drawing, third embodiment is illustrated.The manufacture of the iron casting of present embodiment
In the structure of equipment, the part different from second embodiment is illustrated.Other parts are identical as second embodiment, because
This is referring to above description, and the description thereof will be omitted herein.
The manufacturing equipment 1 of iron casting have mold 2, mold platform 3, frame transmission device 4, fixed suction device 5 and
Movable suction device 6.Fig. 5 is the schematic sectional view around the mold 2 of third embodiment.Fig. 5 indicates V technique mold, by
Use mold 2, temperature sensor 10,13 structure of control device 11, emergency warning lamp 12 and two-port valve of the molding sand 9 without binder
At, and in make temperature sensor 10 be inserted into and contact casting C in mold 2 the most thick position of wall thickness state.Temperature passes
Sensor 10 is identical as second embodiment, waits right above the most thick position of the wall thickness of the casting C outside mold 2 in advance.Temperature
The holding fix of sensor 10 is different due to product, therefore, it is most thick to store each wall thickness in storage device (not shown) in advance
Position horizontal direction position and height apart from datum level, according to the information by control device 11 to temperature sensor 10 into
Row movement.In addition, mold 2 is connect using the hose 8 that can easily assemble and disassemble with two-port valve, and two-port valve 13 is via piping 7 and not
The attraction source of diagram is connected to.
It is identical as second embodiment, if the information input controller 11 that casting terminates, passes through insertion (not shown)
Device is removed, temperature sensor 10 is inserted into and contacts the most thick position of wall thickness of casting C in mold.Whereby, casting C Surface
Temperature information be entered control device 11.
If control device 11 is reduced to according to the product surface temperature that the infomation detection from temperature sensor 10 goes out casting C
A1Transition point is hereinafter, then control device 11 lights emergency warning lamp 12.If operator confirms that emergency warning lamp 12 has lighted, manually close
Two-port valve 13 is closed, hose 8 is then pulled away into mold 2 to release decompression state.Next, removing device using insertion (not shown)
Temperature sensor 10 is pulled away.
In addition, the method for the information input controller 11 that casting is terminated is with embodiment two likewise without special
Limitation, for example, can be pressed the button being connected on control device 11 by operator to input and pour after casting
The information terminated is infused, can also be measured with temperature of the non-contacting thermometer to upper surface air-flow to use control device 11 right
The temperature information of upper surface air-flow is monitored, and rises to the temperature of molten metal according to upper surface air-flow to judge casting knot
Beam, to make the insertion contact of temperature sensor 10.
In addition, all showing the example of V technique, but mold disappearing in first embodiment into third embodiment
It is also identical to make the structure of equipment and movement in the case where method.
In addition, used the molding sand without binder into third embodiment in first embodiment, but as long as can be
There is the state of air constant flow to formation cast(ing) surface in the state of depressurizing in mold, can also contain in molding sand micro
Binder.
As shown in the above description, the present invention is that the cast iron for carrying out plating or enamel processing to surface after the casting is cast
In the manufacturing method of part, using using the molding sand without binder and depressurize in mold in the state of is poured
Mold method of moulding, persistently depressurized in mold, until the temperature of casting for being built in mold after casting is down to A1Turn
Until below height, therefore, there is always the state of free flow of air on the surface for becoming casting.Therefore, casting at high operating temperatures
In, the graphite being present near surface is quickly oxidized, so as to be formed about decarburized layer in cast(ing) surface.On the other hand, it casts
Therefore mould, which is in the state being depressurized, will not generate the case where generating free cementite due to by quenching.Therefore, it is plated
Bad influence is not generated when covering processing or enamel processing, and the abnormal structure near cast(ing) surface not will form, it is clear that of the invention
Effect is very big for a person skilled in the art.
Symbol description
The manufacturing equipment of 1 iron casting
2 molds
3 mold platforms
4 frame transmission devices
5 fixed suction devices
6 movable suction devices
7 pipings
8 hoses
9 molding sand
10 temperature sensors
11 control devices
12 emergency warning lamps
13 two-port valves
Claims (12)
1. a kind of manufacturing method of iron casting, which is characterized in that it includes:
By being depressurized the process to be moulded to mold to molding sand；
The process of casting molten metal in mold；And
To depressurized in the mold, until the temperature of casting formed by the molten metal is down to A1Transition point is below
Process.
2. the manufacturing method of iron casting as described in claim 1, which is characterized in that the molding sand is free of binder.
3. the manufacturing method of iron casting as described in claim 1, which is characterized in that keep the pressure in the mold
Between -70kPa to -10kPa.
4. the manufacturing method of iron casting as claimed in claim 2, which is characterized in that keep the pressure in the mold
Between -70kPa to -10kPa.
5. the manufacturing method of iron casting as claimed in claim 2 or 4, which is characterized in that the molding sand without the binder
The ratio of discontented 53 μm of the particle of middle diameter is 10% or less.
6. a kind of manufacturing equipment of iron casting, casting is manufactured being depressurized to molding sand and being poured in the mold that is molded into
Iron castings, which is characterized in that it is included
At least one mold；
The frame transmission device for keeping the mold mobile；
When the mold stops, suction device is fixed at least one depressurized in the mold；And
When the mold is mobile, moved while decompression in the mold instead of the fixed suction device
At least one movable suction device,
The mold is set to be repeated mobile and stop by the frame transmission device, until the casting in the mold after casting
Temperature is down to A1Below transition point.
7. the manufacturing equipment of iron casting as claimed in claim 6, which is characterized in that
There are multiple molds,
The frame transmission device while mobile multiple molds,
With at least with the fixed suction device of the mold same number and the movable suction device.
8. the manufacturing equipment of iron casting as claimed in claims 6 or 7, which is characterized in that it is also included
The temperature sensor that the product surface temperature of the casting is measured；And
A is down in the product surface temperature of the casting1At the time of below transition point, so that the fixed suction device is from described
Mold is detached to release the control device that the mode of decompression state is controlled.
9. the manufacturing equipment of iron casting as claimed in claim 8, which is characterized in that the temperature sensor is to contact
The mode for stating the most thick position of wall thickness of the casting in mold is inserted into the mold.
10. the manufacturing equipment of iron casting as claimed in claim 8, which is characterized in that also have according to the control device
Instruction carry out bright emergency warning lamp.
11. the manufacturing equipment of iron casting as claimed in claim 9, which is characterized in that also have according to the control device
Instruction carry out bright emergency warning lamp.
12. a kind of iron casting, which is characterized in that in the mold for being depressurized to molding sand and being poured in the mold that is molded into
In method of moulding, to being depressurized in the mold, until the temperature of the casting in the mold after casting is down to A1Transformation
Point hereinafter, produce the iron casting whereby.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015146257 | 2015-07-24 | ||
| JP2015-146257 | 2015-07-24 | ||
| PCT/JP2015/083213 WO2017017863A1 (en) | 2015-07-24 | 2015-11-26 | Cast-iron casting, method for manufacturing cast-iron casting, and equipment for manufacturing cast-iron casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106559990A CN106559990A (en) | 2017-04-05 |
| CN106559990B true CN106559990B (en) | 2019-11-05 |
Family
ID=57884162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580003017.5A Active CN106559990B (en) | 2015-07-24 | 2015-11-26 | The manufacturing equipment of iron casting, the manufacturing method of iron casting and iron casting |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20180369900A1 (en) |
| EP (1) | EP3326733B1 (en) |
| JP (1) | JP6586994B2 (en) |
| KR (1) | KR20180034470A (en) |
| CN (1) | CN106559990B (en) |
| RU (1) | RU2710612C2 (en) |
| WO (1) | WO2017017863A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090835B (en) * | 2022-06-22 | 2023-12-29 | 繁峙县志高矿山机械有限责任公司 | Precise casting process of hardware castings |
| CN115502152B (en) * | 2022-09-01 | 2023-05-30 | 扬州一川镍业有限公司 | Post-treatment process for casting molding of nickel ore molten iron |
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| BE789785A (en) * | 1971-10-08 | 1973-02-01 | Akita Kk | MOLD PRODUCTION APPARATUS |
| DE2402870C2 (en) * | 1974-01-22 | 1975-07-17 | Heinrich Wagner, Maschinenfabrik, 5928 Laasphe | Molding box |
| SU766744A1 (en) * | 1978-09-04 | 1980-09-30 | Предприятие П/Я Р-6762 | Automatic production line for making castings by the vacuum process method |
| SU825269A1 (en) * | 1979-06-07 | 1981-04-30 | Институт Проблем Литья Ан Украинской Сср | Method of producing casting moulds |
| SU852445A1 (en) * | 1979-08-31 | 1981-08-07 | Предприятие П/Я Р-6762 | Plant for production casting by vacuum process |
| SU975202A1 (en) * | 1981-05-27 | 1982-11-23 | Предприятие П/Я Р-6543 | Automatic casting line for producing castings by vacuum moulding |
| JPS58224066A (en) * | 1982-06-23 | 1983-12-26 | Nippon Kokan Keishiyu Kk | Casting method |
| SU1103934A1 (en) * | 1983-04-21 | 1984-07-23 | Всесоюзный Заочный Политехнический Институт | Method of manufacturing casting moulds by vacuum shaping |
| US4780665A (en) * | 1986-09-30 | 1988-10-25 | Deere & Company | Apparatus and method for controlling sand moisture |
| CN1030646C (en) * | 1992-04-01 | 1996-01-10 | 中国科学院长春光学精密机械研究所 | Casting method of high-chrome cast iron ball |
| JP2002035918A (en) * | 2000-07-17 | 2002-02-05 | Sintokogio Ltd | Method for holding vacuum mold and suction pipeline apparatus |
| JP2004143552A (en) * | 2002-10-25 | 2004-05-20 | Aisan Ind Co Ltd | Cast iron components and method for plating the same |
| JP4352397B2 (en) * | 2004-04-01 | 2009-10-28 | 新東工業株式会社 | Pouring method for vacuum mold making |
| WO2005095022A1 (en) * | 2004-04-01 | 2005-10-13 | Sintokogio, Ltd. | Method and device for pouring molten metal in vacuum molding and casting |
| JP4399807B2 (en) * | 2005-02-04 | 2010-01-20 | 新東工業株式会社 | Pouring frame cooling device |
| WO2008038397A1 (en) * | 2006-09-25 | 2008-04-03 | Aisin Takaoka Co., Ltd. | Cast production line apparatus |
| CN101690976B (en) * | 2008-01-08 | 2012-02-01 | 刘玉满 | Method for eliminating carbon defects by adopting high-performance coating, negative-pressure firing, vacant shell pouring and quick airflow cooling in lost foam casting |
| JP5464496B2 (en) * | 2010-08-03 | 2014-04-09 | 新東工業株式会社 | Vacuum mold casting line |
| EP2578333A1 (en) * | 2011-10-07 | 2013-04-10 | Nemak Linz GmbH | Method for controlling a casting assembly |
| CN103212667B (en) * | 2013-03-26 | 2016-05-18 | 山东蒙凌工程机械股份有限公司 | Production technology and the V method mould of application V method cast gear box casing |
| JP2015042775A (en) * | 2013-08-26 | 2015-03-05 | 国立大学法人岩手大学 | Method of producing vitreous-enamel cast iron |
-
2015
- 2015-11-26 CN CN201580003017.5A patent/CN106559990B/en active Active
- 2015-11-26 KR KR1020187003443A patent/KR20180034470A/en unknown
- 2015-11-26 RU RU2018103953A patent/RU2710612C2/en active
- 2015-11-26 JP JP2017510700A patent/JP6586994B2/en active Active
- 2015-11-26 US US15/747,065 patent/US20180369900A1/en not_active Abandoned
- 2015-11-26 WO PCT/JP2015/083213 patent/WO2017017863A1/en active Application Filing
- 2015-11-26 EP EP15899695.9A patent/EP3326733B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3326733A1 (en) | 2018-05-30 |
| EP3326733B1 (en) | 2021-05-05 |
| KR20180034470A (en) | 2018-04-04 |
| US20180369900A1 (en) | 2018-12-27 |
| RU2710612C2 (en) | 2019-12-30 |
| EP3326733A4 (en) | 2019-01-02 |
| CN106559990A (en) | 2017-04-05 |
| RU2018103953A3 (en) | 2019-08-26 |
| RU2018103953A (en) | 2019-08-26 |
| JPWO2017017863A1 (en) | 2018-03-29 |
| WO2017017863A1 (en) | 2017-02-02 |
| JP6586994B2 (en) | 2019-10-09 |
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