CN114433785A - Quick sand mold preparation method - Google Patents
Quick sand mold preparation method Download PDFInfo
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- CN114433785A CN114433785A CN202111396032.4A CN202111396032A CN114433785A CN 114433785 A CN114433785 A CN 114433785A CN 202111396032 A CN202111396032 A CN 202111396032A CN 114433785 A CN114433785 A CN 114433785A
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- sand
- casting
- sand mold
- mold
- cavity
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- 239000004576 sand Substances 0.000 title claims abstract description 140
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 244000035744 Hura crepitans Species 0.000 claims description 21
- 238000011049 filling Methods 0.000 claims description 20
- 238000011282 treatment Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000003723 Smelting Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000004061 bleaching Methods 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 239000011087 paperboard Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007528 sand casting Methods 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention provides a rapid sand mold preparation method, which belongs to the field of sand mold casting. The method is simple to operate and easy to master, can ensure the casting effect of the sand casting, can avoid the flow of the raw sand and ensure the stability of the cavity, and fully solves the problems of easy flow after the raw sand mold is formed, poor preparation effect and easy influence of dust in the existing sand mold preparation method; the invention can play a role in dust prevention and protection, avoids the influence of dust, further ensures the molding effect of the casting, avoids the occurrence of sand holes or cracks and improves the smoothness of the casting.
Description
Technical Field
The invention belongs to the technical field of sand casting, and particularly relates to a rapid sand mold preparation method.
Background
The sand mold is a casting cavity in the casting production process.
Sand casting in the prior art refers to a casting process that produces a casting in a sand mold. Steel, iron and most nonferrous metal castings can be obtained by sand casting.
The molding material used for sand casting is cheap and easy to obtain, the casting mould is simple and convenient to manufacture, and the casting mould can adapt to single-piece production, batch production and mass production of castings, and is a basic process in casting production for a long time.
However, the existing sand mold preparation method has the problems that the casting effect is influenced by the easy flowing of the formed raw sand mold, the preparation effect is poor and the sand mold is easily influenced by dust.
Therefore, the invention of a rapid sand mold preparation method is very necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preparing a quick sand mold, which is realized by the following technical scheme:
the preparation method of the rapid sand mold specifically comprises the following steps:
the method comprises the following steps: preparing a sand mold, namely cleaning raw sand, removing impurities and dust, filtering the raw sand through a stainless steel mesh screen, washing, airing the washed raw sand, putting the aired raw sand into a sand box, reserving a mold cavity in the sand box, and bonding the raw sand through an adhesive to form the sand mold;
step two: the anti-flowing treatment process after the sand mold is formed specifically comprises the following steps:
the first step is as follows: treating the interior of a cavity of a sand mold, smearing a smooth auxiliary material on the inner wall of the formed cavity, secondarily bonding the inner wall of the cavity by using an adhesive after smearing, arranging an injection gate at the upper part of the cavity, communicating the injection gate with an injection port arranged at the top of a sand box, standing after multiple treatments, and preparing for preparation operation;
the second step is that: filling the outside of the sand mold, wherein the inner wall of the bonded cavity cannot flow, and the raw sand contacting with the inner wall of the sand box can collapse or lack, so that the raw sand is continuously filled, the sand mold is more stable through the filling of the raw sand, the binder is continuously filled in the filling, and the standing and airing treatment is performed again after the filling;
step three: the casting preparation operation of the sand mould casting specifically comprises the following steps:
the first step is as follows: preparing molten metal, namely smelting a metal material through a smelting furnace to form molten metal after smelting, bleaching floating objects on the upper surface of the molten metal, forming original molten metal after treatment, and preparing for preparation;
the second step is that: performing pouring molding operation, namely inserting a pouring cup into the pouring opening, pouring original molten metal into the pouring cup, performing pouring operation, checking whether the connecting part of the sand box has the overflow or leakage problem after the original molten metal is subjected to cavity molding, and filling or preparing a sand mold again if the overflow or leakage problem occurs;
step four: casting dustproof protection of a casting, which specifically comprises the following steps:
the first step is as follows: protecting the pouring gate, covering the surface of the pouring gate with a foam board or a paperboard when the pouring gate does not work, removing dust and residual impurities in the cavity, removing raw sand when necessary, and remanufacturing a sand mold when in use;
the second step is that: protecting the casting cup, namely, before the casting cup is used, cleaning and protecting the casting cup, removing dust and residual original metal liquid, placing the casting cup in a dry, ventilated and pollution-free room, and preserving and protecting the casting cup through a foam box;
step five: the sand mould is manufactured under special conditions, if the outline of a casting is a curved surface or a step surface, the maximum section of the casting is also a curved surface, and a mould sample is not conveniently divided into two parts, a common sand excavation moulding method is adopted;
step six: the sand mold is designed to take care of matters, and when the sand is dug and molded, a parting surface needs to be dug and repaired, and the maximum section of the mold sample needs to be dug and repaired.
Preferably, in the step one, the adhesive is a clay.
Preferably, in the second step, the smooth auxiliary material in the first step is prepared by mixing clay and water according to the proportion of 1-1.5: 2-4.
Preferably, in the second step, the sand mold in the second step is divided into a lower sand mold and an upper sand mold, wherein after the lower sand mold is made, a layer of non-sticky parting sand must be uniformly scattered on the parting surface, and then the parting sand is reproduced; after the upper sand mold is well scraped, vent holes are uniformly tied above the projection surface of the pattern.
Preferably, in the second step, the cavity in the second step is formed by hammering or digging with a sand hammer.
Preferably, in the step one, the sand box is divided into an upper box and a lower box, wherein the upper box and the lower box are connected through bolts, and the joint is provided with a metal or ceramic sealing ring.
Compared with the prior art, the invention has the following beneficial effects: the rapid sand mold preparation method is widely applied to the technical field of sand mold casting. The method is simple to operate and easy to master, can ensure the casting effect of the sand casting, can avoid the flow of the raw sand and ensure the stability of the cavity, and fully solves the problems of easy flow after the raw sand mold is formed, poor preparation effect and easy influence of dust in the existing sand mold preparation method; the invention can play a role in dust prevention and protection, avoids the influence of dust, further ensures the molding effect of the casting, avoids the occurrence of sand holes or cracks and improves the smoothness of the casting.
Drawings
Fig. 1 is a flow chart of a method for preparing a quick sand mold.
Fig. 2 is a flowchart of the procedure of the anti-flowing process after the sand mold is formed.
Fig. 3 is a flow chart of a sand mold casting preparation operation.
Fig. 4 is a flow chart of casting dust protection.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the figure:
as shown in figure 1
The preparation method of the rapid sand mold specifically comprises the following steps:
s101: preparing a sand mold, namely cleaning raw sand, removing impurities and dust, filtering the raw sand through a stainless steel mesh screen, washing, drying the washed raw sand, putting the dried raw sand into a sand box, reserving a mold cavity in the sand box, and bonding the raw sand through an adhesive to form the sand mold;
s102: the anti-flowing treatment process after the sand mold is formed is shown in the attached figure 2, and specifically comprises the following steps:
s201: treating the interior of a cavity of a sand mold, smearing a smooth auxiliary material on the inner wall of the formed cavity, secondarily bonding the inner wall of the cavity by using an adhesive after smearing, arranging an injection gate at the upper part of the cavity, communicating the injection gate with an injection port arranged at the top of a sand box, standing after multiple treatments, and preparing for preparation operation;
s202: filling the outside of the sand mold, wherein the inner wall of the bonded cavity cannot flow, and the raw sand contacting with the inner wall of the sand box can collapse or lack, so that the raw sand is continuously filled, the sand mold is more stable through the filling of the raw sand, the binder is continuously filled in the filling, and the standing and airing treatment is performed again after the filling;
s103: the sand mold casting preparation operation, as shown in the attached figure 3, specifically comprises the following steps:
s301: preparing molten metal, namely smelting a metal material through a smelting furnace to form molten metal after smelting, bleaching floating objects on the upper surface of the molten metal, forming original molten metal after treatment, and preparing for preparation;
s302: performing pouring molding operation, namely inserting a pouring cup into the pouring opening, pouring original molten metal into the pouring cup, performing pouring operation, checking whether the connecting part of the sand box has the overflow or leakage problem after the original molten metal is subjected to cavity molding, and filling or preparing a sand mold again if the overflow or leakage problem occurs;
s104: the casting dustproof protection of the casting is shown in the attached figure 4, and specifically comprises the following steps:
s401: protecting the pouring gate, covering the surface of the pouring gate cup with a foam board or a paperboard when the pouring gate cup does not work, removing dust and residual impurities in the cavity, removing raw sand when necessary, and remanufacturing a sand mold when the pouring gate cup is used;
s402: protecting the casting cup, namely, before the casting cup is used, cleaning and protecting the casting cup, removing dust and residual original metal liquid, placing the casting cup in a dry, ventilated and pollution-free room, and preserving and protecting the casting cup through a foam box;
s105: the sand mould is manufactured under special conditions, if the outline of a casting is a curved surface or a step surface, the maximum section of the casting is also a curved surface, and a mould sample is not conveniently divided into two parts, a common sand excavation moulding method is adopted;
s106: the sand mold is designed to take care of matters, and when the sand is dug and molded, a parting surface needs to be dug and repaired, and the maximum section of the mold sample needs to be dug and repaired.
Detailed description of the preferred embodiment
1. Preparing a sand mold, namely cleaning raw sand, removing impurities and dust, filtering the raw sand through a stainless steel mesh screen, washing, drying the washed raw sand, putting the dried raw sand into a sand box, reserving a mold cavity in the sand box, and bonding the raw sand through an adhesive to form the sand mold;
2. the anti-flowing treatment process after the sand mold is formed specifically comprises the following steps:
the first step is as follows: treating the interior of a cavity of a sand mold, smearing a smooth auxiliary material on the inner wall of the formed cavity, secondarily bonding the inner wall of the cavity by using an adhesive after smearing, arranging an injection gate at the upper part of the cavity, communicating the injection gate with an injection port arranged at the top of a sand box, standing after multiple treatments, and preparing for preparation operation;
the second step is that: filling the outside of the sand mold, wherein the inner wall of the bonded cavity cannot flow, and the raw sand contacting with the inner wall of the sand box can collapse or lack, so that the raw sand is continuously filled, the sand mold is more stable through the filling of the raw sand, the binder is continuously filled in the filling, and the standing and airing treatment is performed again after the filling;
3. the casting preparation operation of the sand mould casting specifically comprises the following steps:
the first step is as follows: preparing molten metal, namely smelting a metal material through a smelting furnace to form molten metal after smelting, bleaching floating objects on the upper surface of the molten metal, forming original molten metal after treatment, and preparing for preparation;
the second step is that: performing pouring molding operation, namely inserting a pouring cup into the pouring opening, pouring original molten metal into the pouring cup, performing pouring operation, checking whether the connecting part of the sand box has the overflow or leakage problem after the original molten metal is subjected to cavity molding, and filling or preparing a sand mold again if the overflow or leakage problem occurs;
4. casting dustproof protection of a casting, which specifically comprises the following steps:
the first step is as follows: protecting the pouring gate, covering the surface of the pouring gate cup with a foam board or a paperboard when the pouring gate cup does not work, and removing dust and residual impurities in the cavity; if necessary, removing the raw sand, and when in use, remanufacturing the sand mold;
the second step is that: protecting the casting cup, namely, before the casting cup is used, cleaning and protecting the casting cup, removing dust and residual original metal liquid, placing the casting cup in a dry, ventilated and pollution-free room, and preserving and protecting the casting cup through a foam box;
5. the sand mould is manufactured under special conditions, if the outline of a casting is a curved surface or a step surface, the maximum section of the casting is also a curved surface, and a mould sample is not conveniently divided into two parts, a common sand excavation moulding method is adopted;
6. the sand mold is designed to take care of matters, and when the sand is dug and molded, a parting surface needs to be dug and repaired, and the maximum section of the mold sample needs to be dug and repaired.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (8)
1. The preparation method of the quick sand mold is characterized by comprising the following steps:
the method comprises the following steps: preparing a sand mold, namely cleaning raw sand, removing impurities and dust, filtering the raw sand through a stainless steel mesh screen, washing, drying the washed raw sand in the sun after washing, putting the dried raw sand into a sand box, reserving a mold cavity in the sand box, and bonding the raw sand through an adhesive to form the sand mold;
step two: an anti-flowing treatment process after the sand mould is formed;
step three: casting preparation operation of a sand mould casting;
step four: casting of castings for dust prevention protection;
step five: the sand mould is manufactured under special conditions, if the outline of a casting is a curved surface or a step surface, the maximum section of the casting is also a curved surface, and a mould sample is not conveniently divided into two parts, a common sand excavation moulding method is adopted;
step six: the sand mold is designed to take care of matters, and when the sand is dug and molded, a parting surface needs to be dug and repaired, and the maximum section of the mold sample needs to be dug and repaired.
2. A method for manufacturing a quick sand mold according to claim 1, wherein in the second step, the step of anti-flowing treatment after the sand mold is formed comprises the following steps:
the first step is as follows: treating the interior of a cavity of a sand mold, smearing a smooth auxiliary material on the inner wall of the formed cavity, secondarily bonding the inner wall of the cavity by using an adhesive after smearing, arranging an injection gate at the upper part of the cavity, communicating the injection gate with an injection port arranged at the top of a sand box, standing after multiple treatments, and preparing for preparation operation;
the second step is that: the outside operation of filling of sand mould, cavity inner wall after the bonding can not flow, can appear collapsing or the condition that lacks with the former sand of sand box inner wall contact, need constantly fill former sand this moment, through the packing of former sand for the sand mould is more stable, constantly fills the filling adhesive in filling, after filling, the sunning of stewing once more handles.
3. A method for manufacturing a rapid sand mold according to claim 1, wherein in step three, the sand mold casting manufacturing operation specifically comprises the steps of:
the first step is as follows: preparing molten metal, namely smelting a metal material through a smelting furnace to form molten metal after smelting, bleaching floating objects on the upper surface of the molten metal, forming original molten metal after treatment, and preparing for preparation;
the second step is that: and (3) performing pouring forming operation, namely inserting the pouring cup into the pouring opening, pouring the original molten metal into the pouring cup, performing pouring operation, checking whether the connecting part of the sand box has the overflow or leakage problem after the original molten metal is subjected to cavity forming, and filling or preparing the sand mould again if the overflow or leakage problem is detected.
4. A method for manufacturing a rapid sand mold according to claim 1, wherein in step four, the casting dust protection specifically comprises the steps of:
the first step is as follows: protecting the pouring gate, covering the surface of the pouring gate cup with a foam board or a paperboard when the pouring gate cup does not work, and removing dust and residual impurities in the cavity; if necessary, removing the raw sand, and when in use, remanufacturing the sand mold;
the second step is that: protecting the casting cup, before the casting cup is used, cleaning and protecting the casting cup, removing dust and residual original metal liquid, placing the casting cup in a dry, ventilated and pollution-free room, and preserving and protecting the casting cup through a foam box.
5. A method for manufacturing a rapid sand mold according to claim 1, wherein in step one, a clay is used as the binder.
6. A method for manufacturing a rapid sand mold according to claim 2, wherein in the second step, the smooth auxiliary material in the first step is mixed with clay and water according to a ratio of 1-1.5:2-4 to prepare the auxiliary material.
7. A rapid sand mold manufacturing method according to claim 2, wherein in the second step, the sand mold in the second step is divided into a lower sand mold and an upper sand mold, wherein after the lower sand mold is completed, a non-sticky parting sand must be uniformly scattered on the parting surface and then rebuilt; after the upper sand mold is well scraped, vent holes are uniformly tied above the projection surface of the pattern.
8. A rapid sand mold manufacturing method according to claim 2, wherein in step two, the cavity in the second step is formed by hammering or digging with a sand hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111396032.4A CN114433785A (en) | 2021-11-23 | 2021-11-23 | Quick sand mold preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111396032.4A CN114433785A (en) | 2021-11-23 | 2021-11-23 | Quick sand mold preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN114433785A true CN114433785A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111396032.4A Pending CN114433785A (en) | 2021-11-23 | 2021-11-23 | Quick sand mold preparation method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628319A (en) * | 2008-07-14 | 2010-01-20 | 中国北车集团大同电力机车有限责任公司 | Production method of double-sand mold of resin sand |
| CN102218505A (en) * | 2011-07-08 | 2011-10-19 | 嘉禾县众合铸业有限公司 | Precise casting technology for green sand vacuum sealing model |
| CN105081215A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Method for sand casting |
| CN105081214A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Casting method |
| JP2017113794A (en) * | 2015-12-25 | 2017-06-29 | 有限会社小穴鋳造所 | Casting method and apparatus |
| CN109382485A (en) * | 2018-11-19 | 2019-02-26 | 吉林省众慧广博科技有限公司 | A kind of casting technique improving automobile-used disk like members casting accuracy |
| CN110834064A (en) * | 2018-08-16 | 2020-02-25 | 湖北谷城锐丰机械有限公司 | Sand mold casting process of magnesium-lithium alloy casting |
-
2021
- 2021-11-23 CN CN202111396032.4A patent/CN114433785A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101628319A (en) * | 2008-07-14 | 2010-01-20 | 中国北车集团大同电力机车有限责任公司 | Production method of double-sand mold of resin sand |
| CN102218505A (en) * | 2011-07-08 | 2011-10-19 | 嘉禾县众合铸业有限公司 | Precise casting technology for green sand vacuum sealing model |
| CN105081215A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Method for sand casting |
| CN105081214A (en) * | 2015-08-31 | 2015-11-25 | 苏氏精密制造技术（北京）股份有限公司 | Casting method |
| JP2017113794A (en) * | 2015-12-25 | 2017-06-29 | 有限会社小穴鋳造所 | Casting method and apparatus |
| CN110834064A (en) * | 2018-08-16 | 2020-02-25 | 湖北谷城锐丰机械有限公司 | Sand mold casting process of magnesium-lithium alloy casting |
| CN109382485A (en) * | 2018-11-19 | 2019-02-26 | 吉林省众慧广博科技有限公司 | A kind of casting technique improving automobile-used disk like members casting accuracy |
Non-Patent Citations (1)
| Title |
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Application publication date: 20220506 |
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