CN114210929B - Structure and method for preventing gas blow-by during pouring of multi-component casting mold for sand-lined iron mold casting - Google Patents
Structure and method for preventing gas blow-by during pouring of multi-component casting mold for sand-lined iron mold casting Download PDFInfo
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- CN114210929B CN114210929B CN202111550524.4A CN202111550524A CN114210929B CN 114210929 B CN114210929 B CN 114210929B CN 202111550524 A CN202111550524 A CN 202111550524A CN 114210929 B CN114210929 B CN 114210929B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/068—Semi-permanent moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/067—Venting means for moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
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Abstract
The application relates to a structure and a method for preventing gas channeling during sand-lined metal mold casting, and belongs to the field of machinery. The application comprises an upper iron mold, a lower iron mold, an anti-blow-by gas sand-covering layer, two independent exhaust systems and a gas partition system, wherein the upper iron mold and the lower iron mold are respectively provided with an anti-blow-by gas sand-covering layer on a parting plane, the anti-blow-by gas sand-covering layer is provided with two independent exhaust systems and a gas partition system, and the exhaust systems comprise an exhaust gap, an exhaust groove and a plurality of exhaust holes on the exhaust groove; the gas partition system comprises a gas blocking and isolating convex strip and a gas blocking and isolating groove which are matched with each other, wherein the gas blocking and isolating convex strip is arranged between two exhaust systems of two adjacent lower iron-type components, and the gas blocking and isolating groove is arranged between two exhaust systems of two adjacent upper iron-type components. The application has simple and reasonable structural design, safety and reliability, improves the production efficiency of the iron mold, simplifies the production operation procedure, has low cost and meets the use requirement.
Description
Technical Field
The application relates to a structure and a method for preventing gas channeling during pouring of a multi-component casting mold for sand-lined iron mold casting, in particular to a tooling mold for sand-lined iron mold casting production, and particularly relates to a mold structure for molten iron which needs to be poured for multiple times in a pair of sand-lined iron molds, belonging to the field of machinery.
Background
The sand-coated iron mold is made up by coating a thin layer of coated sand on the inner cavity of metal mold. The iron mold sand-lined casting has the characteristics of energy conservation, material saving, high efficiency, high quality, green production and the like, and has been widely applied.
In the production of iron mold sand-lined castings, in order to improve production efficiency and meet the manufacturability requirements of iron mold sand-lined castings, castings are arranged as much as possible in a pair of iron molds; sometimes, because of the shape, structure and process of the castings, several groups of castings are placed in one iron mold, and the several groups of castings need to be poured one by one in sequence (see fig. 1). The casting cavity after the casting is poured in the pouring process often causes the explosion of gas generated in the casting cavity after the casting is poured in advance to blow out when molten iron is poured in, so that unsafe factors exist in production, and the blown-in gas enters the molten iron poured in the casting after the casting is poured in, so that the casting after the casting is finally caused to have air hole defects and is scrapped.
How to solve the problem that the iron mold needs to be poured with molten iron for multiple times, and the problem that gas generated by the component cavity after pouring firstly flows into the component cavity when the molten iron is poured for the next time is solved, and the key of safe production and rejection rate reduction of the iron mold sand-lined casting is achieved.
Disclosure of Invention
The application aims to overcome the defects in the prior art, and provides the structure and the method for preventing the blowby gas during sand-lined metal mold casting and pouring, which have the advantages of simple and reasonable structural design, safety and reliability, improvement of the production efficiency of the metal mold, simplification of the production operation procedure and low cost.
The application solves the problems by adopting the following technical scheme: the structure of anti-blow-by gas during pouring of the iron mold sand-lined casting multicomponent casting mold comprises an upper iron mold, a lower iron mold and an anti-blow-by gas sand-lined layer, wherein the upper iron mold and the lower iron mold are respectively provided with one layer of anti-blow-by gas sand-lined layer, and the structure is characterized in that: the anti-blow-by gas sand-lined layer is provided with two independent exhaust systems and one gas partition system, and the exhaust systems comprise exhaust gaps, exhaust grooves and a plurality of exhaust holes on the exhaust grooves; the gas partition system comprises a gas blocking and isolating convex strip and a gas blocking and isolating groove which are matched with each other, wherein the gas blocking and isolating convex strip is arranged between two exhaust systems of two adjacent lower iron-type components, and the gas blocking and isolating groove is arranged between two exhaust systems of two adjacent upper iron-type components.
Preferably, the radius of the semicircular section of the gas blocking isolation convex strip is 0.2-0.4 mm larger than that of the semicircular section of the gas blocking isolation groove.
Preferably, the present application further comprises two exhaust gap bosses disposed on either side between two completely independent components.
Preferably, the height of the exhaust clearance boss model is 0.3 mm.
Preferably, the exhaust groove is provided with exhaust through holes at a certain distance.
Preferably, the exhaust through hole is provided with a igniting structure for igniting combustion and accelerating exhaust; and accelerating the discharge of gas in the cavity.
Preferably, the gas blocking isolation groove and the gas blocking isolation convex strip are in interference fit.
Preferably, the clearance space between the vent groove and the die cavity is 0.2-0.3 mm.
The application also provides a method for preventing gas blow-by during pouring of the multi-component casting mould for sand-lined iron mould casting, which is characterized by comprising the following steps of: the method comprises the following specific steps: firstly, sand-covering molding is carried out through the upper iron mold and the lower iron mold, and the upper mold and the lower mold are combined to form a molten iron pouring exhaust system and a gas partition system between the casting mold cavities of two adjacent components of the upper iron mold and the lower iron mold; then, the upper iron mold and the lower iron mold are subjected to mold closing operation, and after the upper iron mold and the lower iron mold are subjected to mold closing, two molten iron pouring exhaust systems are formed between two adjacent component casting mold cavities, and a completely closed gas partition system is formed between the two exhaust systems; when molten iron is poured into a first casting mold cavity, a large amount of gas generated after the sand-covered layer in the cavity contacts with the molten iron is discharged to an exhaust groove through an exhaust gap at one side of the sand-covered layer, then the gas is finally discharged out of the casting mold through an exhaust hole on the exhaust groove and enters an atmosphere space, and ignition can be carried out above the exhaust hole in the middle of the gas, so that the gas in the cavity is discharged in an accelerated manner; because the sand-covered gas partition system is arranged behind the exhaust groove, gas generated by the sand-covered layer in the casting molten iron cavity is exhausted in the exhaust structure at one side of the exhaust groove and cannot enter the casting mould cavity adjacent to the exhaust structure; when the casting mould cavity on the other side is subjected to molten iron casting, the sand-coated layer gas generated by the casting of the molten iron of the component cannot enter the casting mould cavity of the component after being cast adjacently, and cannot enter the casting mould cavity of the component which is not cast adjacently.
Compared with the prior art, the application has the following advantages and effects: 1) The whole structure is simple and reasonable in design, safe and reliable, multiple casting is carried out on the multi-component casting mould cavity in a pair of iron forms, the casting production process requirement is met, and the production efficiency of the pair of iron forms is improved; 2) The defect of casting air hole waste products caused by arrangement of a multi-component casting mold cavity in a pair of iron molds is avoided; 3) The potential safety hazards caused by the generation of blow-by gas in the molten iron pouring process due to the arrangement of a multi-component casting mold cavity in a pair of iron molds are avoided; 4) The file is directly manufactured on the iron mold sand coating tool mold, so that the production operation procedure is greatly simplified, and the additional labor cost is not increased; 5) The structural form and the method of the file are simple, convenient and feasible, have good effect, and are favorable for further popularization and application of the sand-lined iron mold casting technology.
Drawings
FIG. 1 is a schematic diagram of gas cross-ventilation generated by each component of a multi-component cavity iron mold in accordance with an embodiment of the present application during casting.
FIG. 2 is a schematic diagram of an apparatus for preventing blow-by between component cavities during sand-lined casting pouring according to an embodiment of the present application.
FIG. 3 is a schematic diagram of an anti-blow-by device for sand-lined casting of a multicomponent casting mold in accordance with an embodiment of the present application during sand-lined molding of an upper iron mold.
Fig. 4 is a schematic diagram of a structure for preventing blowby gas during pouring of a multi-component casting mold in sand-lined casting according to an embodiment of the present application, which is formed during sand-lined molding of a lower iron mold.
FIG. 5 is a schematic view of the blow-by preventing device after an upper iron mold and a lower iron mold are combined when the sand-lined casting multicomponent casting mold is poured.
FIG. 6 is a schematic diagram of the operation of the device for preventing blowby between the iron mold components in the sand-lined casting and pouring process according to the embodiment of the application.
Fig. 7 is a partially enlarged structural schematic diagram at a in fig. 5.
In the figure: the anti-blow-by gas sand-lined layer 1, the exhaust gap 2, the exhaust groove 3, the exhaust hole 4, the gas blocking isolation convex strips 5 and the gas blocking isolation grooves 6; the casting mold comprises an upper iron mold 7, a lower iron mold 8, a casting system 9, a pouring cup 91, a sprue 92, a sprue nest 93, a casting mold cavity 10, an exhaust clearance boss 11, an exhaust convex strip 12, an anti-blow-by sand-lined mold cavity 13, a sand-lined exhaust hole 14, an iron mold exhaust hole 15, a casting mold 16, a mold plate 17, a sand-lined space 18, an exhaust clearance mold 21, a gas blocking isolation convex strip mold 51, an exhaust convex strip mold 121, an exhaust needle mold 122, a ladle 30, a gas 31 produced by casting adjacent components, a casting mold sand-lined layer 32, a casting mold cavity sand-lined layer 33 and a sand blocking gas convex strip mold 34.
Detailed Description
The present application will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present application and not limited to the following examples.
Examples
Referring to fig. 1 to 7, the structure of the anti-blow-by gas in pouring the multi-component casting mold for sand-lined iron casting in the embodiment comprises an upper iron mold 7, a lower iron mold 8, an anti-blow-by gas sand-lined layer 1, two independent exhaust systems and a gas partition system, wherein the anti-blow-by gas sand-lined layers 1 are respectively arranged on parting planes of the upper iron mold 7 and the lower iron mold 8, the anti-blow-by gas sand-lined layer 1 is provided with two independent exhaust systems and a gas partition system, and the exhaust systems comprise an exhaust gap 2, an exhaust groove 3 and a plurality of exhaust holes 4 on the exhaust groove 3; the gas partition system comprises a gas blocking and isolating raised line 5 and a gas blocking and isolating groove 6 which are matched with each other, the gas blocking and isolating raised line 5 is arranged between two exhaust systems of two adjacent components of the lower iron type 8, and the gas blocking and isolating groove 6 is arranged between two exhaust systems of two adjacent components of the upper iron type 7.
In the embodiment, the exhaust groove 3 is provided with exhaust through holes at a certain distance; a clearance space of 0.2-0.3 mm is arranged between the exhaust groove 3 and the die cavity.
In the present embodiment, the exhaust gap 2, the exhaust ridge 12, and the gas blocking isolation ridge 5 are provided with the exhaust gap model 21, the exhaust ridge model 121, and the gas blocking isolation ridge model 51, respectively, in use.
The concrete steps of the blow-by prevention during pouring of the multi-component casting mold for sand-lined iron mold casting in the embodiment are as follows: firstly, sand-covering molding is carried out by combining an upper iron mold 7 and a lower iron mold 8 with the upper mold and the lower mold, a molten iron pouring exhaust system and a gas partition system (see figure 2) of the file are formed between the upper iron mold 7 and the lower iron mold 8, then the upper iron mold 8 and the lower iron mold 8 are subjected to box-combining operation, and after the upper iron mold 7 and the lower iron mold 8 are combined, two molten iron pouring exhaust systems are formed between the two adjacent component casting mold cavities 10, and a completely closed gas partition system is formed between the two exhaust structures. See fig. 6: when molten iron is poured into the first casting mold cavity 10, a large amount of gas generated after the sand-covered layer in the cavity contacts with the molten iron is discharged to the exhaust groove 3 through the exhaust gap 2 at one side of the sand-covered layer, then the gas is finally discharged out of the casting mold through the exhaust hole 4 on the exhaust groove 3 and enters the atmosphere space, and ignition can be carried out above the exhaust hole 4 in the middle of the gas, so that the gas in the cavity is discharged in an accelerated manner; the iron mold is provided with iron mold vent holes 15. Since the sand-lined gas shutoff structure is provided behind the vent groove 3, gas generated by the sand-lined layer in the casting molten iron cavity is discharged in the vent structure on one side thereof without entering the adjacent casting mold cavity 10. When the other side casting mould cavity 10 is subjected to molten iron casting, the sand-coated layer gas generated by the molten iron casting of the component cannot enter the adjacent casting mould cavity 10 which is already cast and cannot enter the adjacent casting mould cavity 10 which is not cast. When the iron mold with more than two component casting molds in a pair of iron molds is used for pouring molten iron on each component sequentially, after the gas channeling prevention device of the file is adopted, gas generated by the adjacent component casting mold cavity 10 in the pouring process and the subsequent solidification process cannot flow into the casting mold cavity 10 of other components, so that the defect of air holes of castings caused by gas mutual channeling generated among the components in the production of multi-component iron mold castings is avoided, and the situation that molten iron is sprayed out from the casting system 9 (direct pouring gate) cavity due to the gas channeling of the other component casting mold cavity 10 in the molten iron pouring process is avoided, and safety accidents and casting waste products are caused.
The working principle of the device for preventing mutual blowby among components in the process of casting the iron mold with the sand-lined casting multi-component cavity is that the device is used for casting the iron mold with the sand-lined casting multi-component cavity: in the sand lined iron mold casting production, a pair of iron molds is usually provided with only one pouring system 9, namely: a sprue cup 91 is provided, a sprue 92 is provided, and sprue cups 93 are provided accordingly, and then the casting mold cavities 10 of the iron mold are connected by a runner, an ingate, or the like. When molten iron is poured, molten iron can enter each casting cavity in a pair of iron forms through the sprue 92, the cross runner and the inner runner at one time until each casting cavity in the iron forms is filled, and the pouring process of molten iron is completed, namely: in a pair of iron mold, the molten iron pouring of the whole iron mold cavity 10 can be realized by only one pouring system 9 (sprue 92+ runner + ingate) +each casting cavity, and the iron mold is called a single-component casting. The multi-component casting iron mold is a structure in which a plurality of single-component casting molds (one pouring system 9 (sprue 92+ runner + ingate) +a plurality of casting cavities) are present in a pair of iron molds. In the sand lined iron mold casting production, the mold cavity 10 is conventionally formed as a single-component mold. With the continuous popularization of the application of the iron mold sand-lined casting technology, new casting products are arranged in the iron mold plane size range of the existing iron mold sand-lined production line for production, and a multi-component casting mold is required to be placed in a pair of iron mold plane size range in order to meet the iron mold sand-lined technological requirements and the production efficiency as high as possible. In the process of pouring molten iron, each component in a pair of iron molds needs to be poured in sequence one by one. When the post-pouring component is poured, gas exhausted from the previous pouring component can be blown into the casting mould, so that the component casting is scrapped due to defects such as air holes and the like. It is therefore necessary to provide a structure or means in such iron-type sand-lined moulds to ensure that the gas generated during the initial casting of the component does not penetrate into the mould cavity 10 during the subsequent casting of the component. The application discloses a gas blocking and isolating structure and a completely independent exhaust system are arranged between every two adjacent component casting mould cavities 10 in a multi-component casting mould sand-lined casting mould, so that the two mould cavities can be prevented from mutually blowby when the adjacent component casting mould cavities 10 are cast front and back. The gas blocking and isolating structure and the exhaust system between the components are formed during sand coating molding, and are formed on a sand coating layer which is specially arranged between the iron mold two-component cavity.
The structural device for preventing mutual blowby among components during pouring of the iron mold with the multi-component cavity for the sand-lined iron mold casting in the embodiment is mainly used for the sand-lined iron mold casting production of a pair of iron mold with a plurality of component casting cavities 10. The iron mold for sand-lined casting of the iron mold comprises a plurality of groups of completely independent mold cavities, and the process of filling the mold cavities can be completed by pouring the iron mold for a plurality of times during production. In order to prevent the gas generated by each cavity during the casting process from mutually blowby, causing casting air hole defects and safety accidents, a complete isolation space must be formed between each independent cavity during the casting process, i.e. the gas generated by the sand coating of each independent cavity during the casting process cannot diffuse and permeate into the casting cavity 10 of other components.
See fig. 2: the device of the embodiment is characterized in that two component casting mould cavities 10 of an upper iron mould 7 and a lower iron mould 8 are specially provided with a layer of anti-blow-by sand-covering layer 1 respectively on parting planes of the upper iron mould 8 and the lower iron mould 8, and two independent exhaust systems and a partition system are formed on the respective sand-covering layers.
In the exhaust system of this embodiment, one partition system of the upper iron mold 7 and the lower iron mold 8 includes: making gas partition convex strips between two exhaust systems of two adjacent components of the lower iron mold 8; making a gas partition groove between two exhaust systems of two adjacent components of the upper iron mold 7; after the upper iron mold 7 and the lower iron mold 8 are closed, the gas partition convex strips and the gas partition grooves are tightly combined together, a completely closed gas partition system is formed between the two exhaust systems, and gas mutual blowby between two adjacent independent cavities is blocked.
The sand-lined molding of the sand-lined structure of the exhaust system and the gas partition system in this embodiment is shown in fig. 3 and fig. 4. As can be seen from fig. 3, a casting mold 16, a mold plate 17 and a sand coating space 18 are provided, and are used in a sand coating mold of an upper iron mold 7, two exhaust gap bosses 11 are respectively formed on two sides between two completely independent components, the height of the exhaust gap boss 11 is 0.3 millimeter, and after sand coating molding of the upper iron mold 7 and a lower iron mold 8 is completed, an exhaust gap 2 of 0.3 millimeter can be formed on an iron mold parting surface at the position; each exhaust gap boss 11 on the upper model is connected with a respective cavity and connected with a respective exhaust convex strip 12 at one side, the section of each exhaust convex strip 12 is generally semicircular, and a plurality of exhaust needles can be arranged on each exhaust convex strip 12 according to the amount of exhaust gas during pouring, and each exhaust needle is provided with an exhaust needle model 122; a gas barrier rib pattern is formed between two exhaust ribs 12 of two adjacent component mold patterns, which is generally semicircular in cross section. The upper iron mold 7 is arranged between two adjacent component cavities, an anti-blow-by sand-covered cavity 13 is formed, exhaust holes are formed correspondingly at the positions of each exhaust needle on each exhaust convex strip 12 of the upper mold, and the diameter of each exhaust hole is 15-20 mm larger than that of each exhaust needle of the mold; and after the upper iron mold 7 and the upper mold are molded, sand-coated sand is injected into a space formed between the iron mold and the mold and an anti-blow-by sand-coated layer cavity 13, so that an upper iron mold 7 anti-blow-by structure device (shown in figure 2) which is correspondingly formed by an anti-blow-by sand-coated layer 1, an exhaust gap 2, an exhaust groove 3, a sand-coated exhaust hole, a gas partition groove and the like is formed in the upper iron mold 7 cavity.
See fig. 4: in the mould for the sand lined metal mould 8, a gas partition groove with the shape, the height and the size similar to those of the upper mould gas partition convex strip is formed at the corresponding position between two completely independent components and between the two completely independent components and the upper mould gas partition convex strip, and the cross section size of the groove is 0.2-0.4 mm larger than that of the upper mould gas partition boss. And after the lower iron mold 8 and the lower mold are molded, sand coating molding is carried out, the precoated sand is injected into a space formed between the iron mold and the mold, and the anti-blow-by sand coating cavity 13 is formed, so that the lower iron mold 8 anti-blow-by structural device (shown in figure 2) consisting of the anti-blow-by sand coating 1 and the gas partition convex strips (the positions of the convex strips are consistent with the positions of the gas partition grooves of the upper iron mold 7) can be formed in the lower iron mold 8. The radius size of the semicircular section of the gas blocking isolation convex strip 5 formed by sand coating molding of the lower iron mold 8 is 0.2-0.4 mm larger than that of the semicircular section of the gas blocking isolation groove 6 in the upper iron mold 7.
When the upper iron mold 7 and the lower iron mold 8 are in mold closing, the gas blocking isolation groove 6 of the upper iron mold 7 and the gas blocking isolation convex strip 5 of the lower iron mold 8 are in interference fit, and are tightly extruded under the action of mold closing force to form a complete airtight whole, so that mutual blow-by between two adjacent components can be blocked.
According to the embodiment, a sand-covering layer structure capable of well blocking mutual air blow-by of component casting mould cavities 10 is developed from an iron mould sand-covering tool mould, so that when multiple groups of casting moulds of an iron mould sand-covering casting mould are cast in sequence, air generated by each component casting mould cavity during casting cannot blow into other component casting mould cavities 10, and potential safety hazards in the production process and rejection of produced castings due to air holes caused by mutual blow-by of the generated air between each component casting mould cavity during casting of the iron mould are prevented.
In the embodiment, by respectively establishing the sand-covering layer structure of the exhaust system and the gas blocking and isolating system between the components of the iron mold for sand-covering casting of the iron mold, the generated gas of each component can not be blown into other casting mold cavities 10 of components which are not cast through the respective gas blocking and isolating system in the molten iron casting process, and the generated gas can be timely discharged into the atmosphere through the respective established exhaust system.
The drawings of this embodiment are further provided with a ladle 30, a gas 31 generated by casting of adjacent components, a mold sand coating 32, a mold cavity sand coating 33 and a sand-coated air blocking rib model 34, which are not specifically described herein because they are known to those skilled in the art.
From the above description, those skilled in the art will be able to practice.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present application. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the application as defined in the accompanying claims.
Claims (9)
1. The utility model provides a structure of anti-blow-by gas when iron type sand-lined casting multicomponent casting mould pouring, includes iron type, lower iron type and anti-blow-by gas sand-lined layer, set up the anti-blow-by gas sand-lined layer of one deck respectively on upper iron type, the lower iron type parting plane, its characterized in that: the anti-blow-by gas sand-lined layer is provided with two independent exhaust systems and one gas partition system, and the exhaust systems comprise exhaust gaps, exhaust grooves and a plurality of exhaust holes on the exhaust grooves; the gas partition system comprises a gas blocking and isolating convex strip and a gas blocking and isolating groove which are matched with each other, wherein the gas blocking and isolating convex strip is arranged between two exhaust systems of two adjacent lower iron-type components, and the gas blocking and isolating groove is arranged between two exhaust systems of two adjacent upper iron-type components.
2. The structure for preventing gas blow-by during pouring of the iron mold sand-lined casting multicomponent casting mold according to claim 1, wherein the structure is characterized in that: the radius size of the semicircular section of the gas blocking isolation convex strip is 0.2-0.4 mm larger than that of the semicircular section of the gas blocking isolation groove.
3. The structure for preventing gas blow-by during pouring of the iron mold sand-lined casting multicomponent casting mold according to claim 1, wherein the structure is characterized in that: the device also comprises two exhaust clearance bosses which are respectively arranged at two sides between two completely independent components.
4. The structure for preventing gas blow-by when pouring a multi-component casting mold for sand lined iron mold according to claim 3, wherein: the model height of the exhaust gap boss is 0.3 mm.
5. The structure for preventing gas blow-by during pouring of the iron mold sand-lined casting multicomponent casting mold according to claim 1, wherein the structure is characterized in that: the exhaust groove is provided with exhaust holes at a certain distance.
6. The structure for preventing gas blow-by during pouring of the multi-component casting mold for sand lined iron mold according to claim 5, wherein: and the exhaust hole is provided with a igniting structure for igniting combustion and accelerating exhaust.
7. The structure for preventing gas blow-by during pouring of the iron mold sand-lined casting multicomponent casting mold according to claim 1, wherein the structure is characterized in that: the gas blocking isolation groove and the gas blocking isolation convex strip are in interference fit.
8. The structure for preventing gas blow-by during pouring of the iron mold sand-lined casting multicomponent casting mold according to claim 1, wherein the structure is characterized in that: and a clearance space of 0.2-0.3 mm is formed between the exhaust groove and the die cavity.
9. A method for preventing gas blow-by during pouring of a multi-component casting mold for sand lined iron mold, which adopts the structure for preventing gas blow-by during pouring of the multi-component casting mold for sand lined iron mold according to any one of claims 1 to 8, and is characterized in that: the method comprises the following specific steps: firstly, sand-covering molding is carried out through the upper iron mold and the lower iron mold, and the upper mold and the lower mold are combined to form a molten iron pouring exhaust system and a gas partition system between the casting mold cavities of two adjacent components of the upper iron mold and the lower iron mold; then, the upper iron mold and the lower iron mold are subjected to mold closing operation, and after the upper iron mold and the lower iron mold are subjected to mold closing, two molten iron pouring exhaust systems are formed between two adjacent component casting mold cavities, and a completely closed gas partition system is formed between the two exhaust systems; when molten iron is poured into a first casting mold cavity, a large amount of gas generated after the sand-covered layer in the cavity contacts with the molten iron is discharged to an exhaust groove through an exhaust gap at one side of the sand-covered layer, then the gas is finally discharged out of the casting mold through an exhaust hole on the exhaust groove and enters an atmosphere space, and ignition is carried out above the exhaust hole in the middle of the gas, so that the gas in the cavity is discharged in an accelerated manner; because the sand-covered gas partition system is arranged behind the exhaust groove, gas generated by the sand-covered layer in the casting molten iron cavity is exhausted in the exhaust structure at one side of the exhaust groove and cannot enter the casting mould cavity adjacent to the exhaust structure; when the casting mould cavity on the other side is subjected to molten iron casting, the sand-coated layer gas generated by the casting of the molten iron of the component cannot enter the casting mould cavity of the component after being cast adjacently, and cannot enter the casting mould cavity of the component which is not cast adjacently.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519741U (en) * | 2009-10-29 | 2010-07-07 | 申明堂 | Metal mold casting device |
| JP2011136361A (en) * | 2009-12-28 | 2011-07-14 | Bridgestone Corp | Method and apparatus for casting cast metal |
| CN203076541U (en) * | 2012-12-28 | 2013-07-24 | 晋西铁路车辆有限责任公司 | Casting multi-cavity sand box with air-escape structure |
| JP2018111124A (en) * | 2017-01-13 | 2018-07-19 | 敏彦 佐々木 | Metal mold device, vent pin and method for molding |
| CN208495712U (en) * | 2018-07-10 | 2019-02-15 | 天津源远精密机械有限公司 | A kind of gravity casting die |
| CN216912018U (en) * | 2021-12-17 | 2022-07-08 | 浙江省机电设计研究院有限公司 | Structure for preventing air blowby during pouring of multi-component casting mold for sand lined metal mold casting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008058764B4 (en) * | 2008-11-14 | 2011-08-25 | Herzog & Herzog Holding und Service GmbH, 70839 | Casting tool and core forming machine |
-
2021
- 2021-12-17 CN CN202111550524.4A patent/CN114210929B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519741U (en) * | 2009-10-29 | 2010-07-07 | 申明堂 | Metal mold casting device |
| JP2011136361A (en) * | 2009-12-28 | 2011-07-14 | Bridgestone Corp | Method and apparatus for casting cast metal |
| CN203076541U (en) * | 2012-12-28 | 2013-07-24 | 晋西铁路车辆有限责任公司 | Casting multi-cavity sand box with air-escape structure |
| JP2018111124A (en) * | 2017-01-13 | 2018-07-19 | 敏彦 佐々木 | Metal mold device, vent pin and method for molding |
| CN208495712U (en) * | 2018-07-10 | 2019-02-15 | 天津源远精密机械有限公司 | A kind of gravity casting die |
| CN216912018U (en) * | 2021-12-17 | 2022-07-08 | 浙江省机电设计研究院有限公司 | Structure for preventing air blowby during pouring of multi-component casting mold for sand lined metal mold casting |
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