CN114951586A - Cold and hot paste application structure of precision casting and application method thereof - Google Patents
Cold and hot paste application structure of precision casting and application method thereof Download PDFInfo
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- CN114951586A CN114951586A CN202210605523.3A CN202210605523A CN114951586A CN 114951586 A CN114951586 A CN 114951586A CN 202210605523 A CN202210605523 A CN 202210605523A CN 114951586 A CN114951586 A CN 114951586A
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- casting
- cold
- riser
- hot
- barrel
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- 238000005495 investment casting Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 22
- 238000005266 casting Methods 0.000 claims abstract description 121
- 239000002184 metal Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- 230000000630 rising effect Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000003031 feeding effect Effects 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 14
- 238000007711 solidification Methods 0.000 abstract description 6
- 230000008023 solidification Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 101150038956 cup-4 gene Proteins 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a cold-hot paste application structure of a precision casting, which comprises a casting shell mold, a casting body poured and formed inside the casting shell mold, a sprue cup arranged on one side of the casting shell mold, a cold paste which is positioned below the casting shell mold and close to the sprue cup, wherein the casting shell mold comprises a casting barrel, a first riser, a second riser and a third riser which are arranged above the casting barrel in sequence towards the direction of the sprue cup, a plurality of barrel hot pastes which are arranged below the casting barrel in sequence towards the direction of the sprue cup, and a bottom plate which is hollow and formed integrally with the casting barrel; the cold paste and cylinder hot paste structure is applied to a casting shell mold, the cooling speed of a casting can be effectively changed or the local cooling speed is accelerated, the feeding space required by the solidification of molten metal in the casting cylinder is optimized by utilizing the first riser, the second riser and the third riser, and the shrinkage cavity or shrinkage porosity generation condition of the formed casting body is reduced, so that a high-quality casting without casting defects is obtained.
Description
Technical Field
The invention particularly relates to a cold and hot paste application structure of a precision casting and an application method thereof.
Background
Casting is one of the basic processes of modern mechanical manufacturing industry, so the development of the casting industry marks the production strength of a country, and the casting is a technological process of smelting metal into liquid meeting certain requirements, pouring the liquid into a casting mold, and obtaining a casting with preset shape, size and performance after cooling, solidification and finishing treatment.
In the precision casting process of foundry goods, the mould that uses is not carried out design cooling structure to optimize cooling speed because of the mould size is little to the mould, cools off through the mode that sprays cold water cooperation forced air cooling, but this kind of mode can cause in the mould foundry goods because of can't carrying out the feeding and the condition such as shrinkage cavity, shrinkage porosity appear in the cooling process, leads to the reduction in quality of precision casting, the foundry goods that have casting defect in a large number of appears easily.
Disclosure of Invention
In view of the above, the present invention provides a cold and hot section application structure capable of effectively optimizing the cooling speed of a casting and accelerating the local cooling speed, and reducing the casting defects of a precision casting, and an application method of the cold and hot section application structure is also defined.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a structure is used to cold and hot card of precision casting, includes the foundry goods shell mould, pours the shaping and is in the inside foundry goods body of foundry goods shell mould sets up the pouring basin of foundry goods shell mould one side is located the cold subsides of pouring basin is close to foundry goods shell mould below, the foundry goods shell mould includes the foundry goods barrel, sets up the foundry goods barrel top towards pouring basin direction arrange in proper order, be used for increasing first rising head, second rising head and the third rising head in foundry goods barrel feeding space, set up a plurality of blocks of barrel hot cards that the foundry goods barrel below was arranged in proper order towards pouring basin direction to and inside be the fretwork setting, and with foundry goods barrel integrated into one piece's bottom plate, bottom plate and foundry goods barrel intercommunication.
Furthermore, a guide pipe is welded at the upper end of the first riser.
Further, the structure of the second riser and the third riser is consistent with that of the first riser.
Furthermore, the cylinder hot paste and the casting cylinder are integrally formed and are metal sheets.
Furthermore, the bottom plate and the casting barrel are integrally formed, and a bottom plate riser is arranged at the upper end of the bottom plate.
Furthermore, a sprue is arranged at the lower end of the sprue cup, and an inner runner communicated with the bottom plate is arranged at the lower end of the sprue.
Furthermore, the cold paste is pre-installed before the casting body is formed and is a rectangular metal box body.
Furthermore, water pipe connectors are arranged on two sides of the cold patch.
An application method of a cold and hot paste application structure of a precision casting comprises the following steps:
step 2, mounting of the cold paste: after the casting shell mold in the step is prepared, the cold paste arranged in a rectangular shape is arranged at a position close to the pouring cup below the casting cylinder for later use;
step 3, pouring the casting body, which comprises the following specific steps:
a. installing the casting shell mold installed in the step 2 into a casting machine, and connecting an external circulating water pipe with water pipe connectors on two sides of the cold patch for later use;
b. the casting machine injects molten metal through the sprue cup, the molten metal sequentially passes through the sprue and the ingate, then is injected into the bottom plate through the ingate, and finally is injected into the casting barrel through the bottom plate for forming;
c. after the early-stage initial condensation point of the metal liquid is formed through the cylinder hot patch in the specific step b, the cold patch is connected and circulating cold water is introduced, so that the metal liquid in the casting cylinder on which the cold patch is installed is chilled, the feeding effect of the first riser, the second riser and the third riser on the casting cylinder can be improved, the condition that shrinkage cavities or shrinkage porosity are generated in the process of forming the casting body by the metal liquid is prevented, and the quality of the casting body is improved.
The technical effects of the invention are mainly reflected in the following aspects: the cold paste and cylinder hot paste structure is applied to a casting shell mold, the cooling speed of a casting can be effectively changed or the local cooling speed is accelerated, the feeding space required by molten metal solidification in the casting cylinder is optimized by using the first riser, the second riser and the third riser, and the shrinkage cavity or shrinkage porosity generated by the formed casting body is reduced, so that a high-quality casting without casting defects is obtained.
Drawings
FIG. 1 is a front view of a cold-hot section application structure of a precision casting of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
A cold-hot patch application structure of a precision casting is shown in figures 1-3 and comprises a casting shell mold 1, a casting body 2 poured and formed inside the casting shell mold 1, a sprue cup 3 arranged on one side of the casting shell mold 1, and a cold patch 4 located below the casting shell mold 1 and close to the sprue cup 3.
The lower end of the sprue cup 3 is provided with a sprue 31, the lower end of the sprue 31 is provided with an ingate 32 communicated with the bottom plate 16, metal can be easily conveyed to the casting shell mold 1 through the sprue 31 and the ingate 32 to form the casting body 2, and meanwhile, the sprue 31 plays a role of hot sticking in the process of conveying metal solution, so that the bottom plate 16 forms a feeding channel from bottom to top. The two sides of the cold paster 4 are provided with the water pipe connectors 41, so that the cold paster can be externally connected with circulating cold water in the forming process of the casting body 2, the cooling speed of the casting body 2 at the installation part of the cold paster 4 can be increased, and the casting body 2 can be prevented from producing shrinkage cavities.
In the present embodiment, the second feeder 13 and the third feeder 14 have the same structure as the first feeder 12, and both discharge the melted wax and the generated gas during the casting process of the casting body 2 through the conduits.
In this embodiment, the cylinder heat slug 15 is integrally formed with the casting cylinder 11 as a metal sheet.
In this embodiment, the cold paste 4 is pre-installed before the casting body 2 is formed, and is a rectangular metal box.
The embodiment also provides an application method of a cold and hot plaster application structure of precision castings, which comprises the following steps:
step 2, mounting of the cold patch 4: after the casting shell mold 1 in the step 1 is prepared, installing a cold paste 4 which is arranged in a rectangular shape at a position close to the sprue cup 3 below the casting cylinder 11 for later use;
and 3, pouring the casting body 2, wherein the concrete steps are as follows:
a. installing the casting shell mold 1 installed in the step 2 into a casting machine, and connecting an external circulating water pipe with water pipe connectors 41 on two sides of the cold patch 4 for later use;
b. molten metal is injected into the casting machine through the sprue cup 4, the molten metal sequentially passes through the sprue 31 and the ingate 32, then is injected into the bottom plate 16 through the ingate 32, and finally is injected into the casting barrel 11 through the bottom plate 16 for forming, in the process, the sprue 31 and the ingate 32 also play a role of a hot junction in the process of conveying the molten metal, so that a feeding channel is formed on the bottom plate 16 from bottom to top, after the molten metal is fully injected into the casting barrel 11, the barrel hot junction 15 can improve the heat dissipation effect in the process of solidifying the molten metal, so that the molten metal at the lower end of the casting barrel 11 quickly forms an early initial solidification point of the molten metal, and in addition, the first feeder 12, the second feeder 13 and the third feeder 14 discharge melted wax and generated gas in the process of forming the molten metal through conduits;
c. after the early-stage initial solidification point of the metal liquid in the specific step b is formed through the cylinder hot patch 15, circulating cold water is introduced into the cold patch 4, so that the metal liquid in the casting cylinder 11 where the cold patch 15 is installed is chilled, the feeding effect of the first feeder head 12, the second feeder head 13 and the third feeder head 14 on the casting cylinder 11 can be improved, the situation that shrinkage cavities or shrinkage porosity are generated in the process of forming the casting body 2 by the metal liquid is prevented, and the quality of the casting body 2 is improved.
The technical effects of the invention are mainly reflected in the following aspects: the cold paste and cylinder hot paste structure is applied to a casting shell mold, the cooling speed of a casting can be effectively changed or the local cooling speed is accelerated, the feeding space required by molten metal solidification in the casting cylinder is optimized by using the first riser, the second riser and the third riser, and the shrinkage cavity or shrinkage porosity generated by the formed casting body is reduced, so that a high-quality casting without casting defects is obtained.
It is understood that the above are only exemplary embodiments of the present invention, and other embodiments of the present invention may be made by using equivalent or equivalent alternatives, which fall within the scope of the present invention.
Claims (9)
1. The utility model provides a structure is used to cold and hot card of precision casting which characterized in that: including the foundry goods shell mould, pour the shaping and be in the inside foundry goods body of foundry goods shell mould sets up the pouring basin of foundry goods shell mould one side is located the cold subsides of pouring basin are close to foundry goods shell mould below, the foundry goods shell mould includes the foundry goods barrel, sets up first rising head, second rising head and the third rising head that is used for increasing the foundry goods barrel feeding space that is arranged in proper order towards the pouring basin direction in foundry goods barrel top sets up a plurality of blocks of barrel hot posts that are arranged in proper order towards the pouring basin direction in foundry goods barrel below to and inside be the fretwork setting, and with foundry goods barrel integrated into one piece's bottom plate, the bottom plate communicates with the foundry goods barrel.
2. The cold-hot signature application structure for precision castings according to claim 1, characterized in that: and a guide pipe is welded at the upper end of the first riser.
3. A cold-hot signature application structure for precision castings according to claim 1, characterized in that: the structure of the second riser and the structure of the third riser are consistent with the structure of the first riser.
4. The cold-hot signature application structure for precision castings according to claim 1, characterized in that: the cylinder body hot paste and the casting cylinder body are integrally formed and are metal sheets.
5. A cold-hot signature application structure for precision castings according to claim 1, characterized in that: the bottom plate and the casting barrel are integrally formed, and a bottom plate riser is arranged at the upper end of the bottom plate.
6. A cold-hot signature application structure for precision castings according to claim 1, characterized in that: the lower end of the sprue cup is provided with a sprue, and the lower end of the sprue is provided with an inner sprue communicated with the bottom plate.
7. The cold-hot signature application structure for precision castings according to claim 1, characterized in that: the cold paste is pre-installed before the casting body is formed and is a rectangular metal box body.
8. A cold-hot signature application structure for precision castings according to claim 7, characterized in that: and water pipe connectors are arranged on two sides of the cold patch.
9. An application method of a cold and hot paste application structure of a precision casting is characterized by comprising the following steps:
step 1, preparing a casting shell mold: processing a casting shell mold according to the shape of a casting body by a known technology, then sequentially forming a first riser, a second riser and a third riser for increasing the feeding space of the casting body above a casting cylinder towards the direction of a sprue cup, and simultaneously sequentially forming a plurality of cylinder hot sticks below the casting cylinder towards the direction of the sprue cup for later use;
step 2, mounting of the cold paste: after the casting shell mold is prepared in the step, the cold paste arranged in a rectangular shape is arranged at a position close to the sprue cup below the casting cylinder for later use;
step 3, pouring a casting body, which comprises the following specific steps:
a. installing the casting shell mold installed in the step 2 into a casting machine, and connecting an external circulating water pipe with water pipe connectors on two sides of the cold patch for later use;
b. the casting machine injects molten metal through the sprue cup, the molten metal sequentially passes through the sprue and the ingate, then is injected into the bottom plate through the ingate, and finally is injected into the casting barrel through the bottom plate for forming;
c. after the early-stage initial condensation point of the metal liquid is formed through the cylinder hot patch in the specific step b, the cold patch is connected and circulating cold water is introduced, so that the metal liquid in the casting cylinder on which the cold patch is installed is chilled, the feeding effect of the first riser, the second riser and the third riser on the casting cylinder can be improved, the condition that shrinkage cavities or shrinkage porosity are generated in the process of forming the casting body by the metal liquid is prevented, and the quality of the casting body is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605523.3A CN114951586A (en) | 2022-05-30 | 2022-05-30 | Cold and hot paste application structure of precision casting and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605523.3A CN114951586A (en) | 2022-05-30 | 2022-05-30 | Cold and hot paste application structure of precision casting and application method thereof |
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| CN114951586A true CN114951586A (en) | 2022-08-30 |
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| CN202210605523.3A Pending CN114951586A (en) | 2022-05-30 | 2022-05-30 | Cold and hot paste application structure of precision casting and application method thereof |
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2022
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Application publication date: 20220830 |
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