CN118218555A - S-shaped channel thin-wall efficient air-cooled iron for magnesium aluminum light alloy sand casting - Google Patents
S-shaped channel thin-wall efficient air-cooled iron for magnesium aluminum light alloy sand casting Download PDFInfo
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- CN118218555A CN118218555A CN202410434482.5A CN202410434482A CN118218555A CN 118218555 A CN118218555 A CN 118218555A CN 202410434482 A CN202410434482 A CN 202410434482A CN 118218555 A CN118218555 A CN 118218555A
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- cast iron
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- shaped channel
- air
- channel thin
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- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000007528 sand casting Methods 0.000 title claims abstract description 33
- 229910001234 light alloy Inorganic materials 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 30
- 229910052742 iron Inorganic materials 0.000 title claims description 15
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 229910001018 Cast iron Inorganic materials 0.000 claims description 64
- 230000003014 reinforcing effect Effects 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 abstract description 22
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 12
- 238000005338 heat storage Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 9
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The invention relates to an S-shaped channel thin-wall high-efficiency air-cooling chiller for magnesium aluminum light alloy sand casting, which aims to solve the problems that in the prior art, a feeding channel is lost during magnesium aluminum light alloy casting sand casting, so that shrinkage porosity and shrinkage cavity defects occur in partial areas, the adopted air-cooling chiller can only be applied to castings with large heat storage coefficient and thick size, and cannot be used in magnesium aluminum alloy castings with small heat storage coefficient and complex thin wall. The invention is used in the field of magnesium-aluminum alloy casting.
Description
Technical Field
The invention relates to an air-cooled chiller, in particular to an S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting.
Background
In the sand casting forming process of large complex magnesium aluminum light alloy castings, in order to ensure the performance of key parts and realize temperature field regulation, a plurality of types of chill are usually required to be arranged for forced cooling. The traditional chill only plays a role of chilling, and can meet the requirement of realizing sequential solidification in a casting with a non-complex structure. In a large-size, special-shaped, multi-cavity, multi-inner oil way and multi-thickness abrupt-change complex casting, a plurality of chilling block chilling areas are mutually influenced, and part of the mounting cooling area is used as a casting mold filling flow channel and a front-end chilling block area solidification feeding channel, as shown in figure 1, a chilling block 1 chilling block area 1 is used as a chilling block 2 chilling block area 2 and a chilling block 3 mold filling and feeding channel, in this case, the areas 1 and 2 are solidified first, and the area 3 loses the feeding channel during solidification, so that the defects such as shrinkage porosity, shrinkage cavity and the like occur at the area 3, and sequential solidification is difficult to realize; in addition, if the chilling capacity of the chill 1 is too strong, the molten metal is solidified when not flowing into the area 2 and even the area 3, so that the area 2 and the area 3 lose a mold filling channel to cause undercasting, and therefore, the air-cooled chill is selected to replace the conventional chill.
In general, as shown in fig. 2, the air-cooled chiller structure is composed of a closed cavity surrounded by a cast iron shell and air inlet and outlet channels, and the shape of the air-cooled chiller is generally square or other shapes. The contact surface with the casting is generally designed to be thicker, often greater than 30mm, to ensure strength. When the cast iron shell needs to be cooled for the region, the cast iron shell enters the closed cavity through the air inlet channel and is discharged through the air outlet channel, so that the whole cast iron shell is cooled, and the casting region in contact with the cooling is cooled.
However, the contact area of the cast iron shell contacted with the casting is thicker, the heat accumulating capacity is high in practical application, the chilling capacity is strong, if the corresponding cooling area is smaller, the relevant area can start to solidify in advance, and the effect of adjusting the solidification sequence of the air cooling chiller is lost; in order to ensure the strength of the chill and avoid deformation, the thickness of the contact area is too thin to be processed, and is generally more than 30mm. In addition, in order to ensure that the gas channel is convenient to install, the air cooling chiller air inlet and air outlet channels are generally positioned on the other surface corresponding to the contact area of the cast iron shell, and when cooling gas enters the cavity, most of air flows from the area far away from the contact area to the air outlet channels, so that the problem of low cooling efficiency of the contact area of the cast iron shell and the cast iron is solved. Therefore, the air-cooled chiller in sand casting is generally only applied to cooling castings with large heat storage coefficient and thick size, such as copper alloy. The method cannot be applied to magnesium-aluminum alloy castings with small heat storage coefficients and thin walls.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, shrinkage porosity and shrinkage cavity defects occur in partial areas due to the loss of a feeding channel during sand casting of magnesium aluminum light alloy castings, and the adopted air-cooled chiller can only be applied to castings with large heat storage coefficients and thick sizes and cannot be used in magnesium aluminum alloy castings with small heat storage coefficients and complex thin walls, and further provides an S-shaped channel thin-wall efficient air-cooled chiller for the sand casting of the magnesium aluminum light alloy castings.
The technical scheme of the invention is as follows:
An S-shaped channel thin-wall high-efficiency air-cooled iron for magnesium aluminum light alloy sand casting comprises a cast iron shell and reinforcing rib plates; the air cooling contact surface of the cast iron shell is opposite to the surface for processing the air inlet through holes, the periphery of the reinforcing rib plates are respectively connected with the inner side wall of the cast iron shell, and cold air flows out sequentially through the air flow holes on the reinforcing rib plates and the S-shaped channels of the air outlet through holes after entering the air inlet through holes.
Further, the cast iron shell is a rectangular shell, the wall thickness of the rectangular shell is 3mm, and the rectangular shell is made of cast iron materials.
Further, the deep floor is rectangular plate, and rectangular plate's thickness is 3mm, and rectangular plate is the plate body that cast iron material made, and the gas flow hole site sets up in rectangular plate's one end.
Further, the air inlet through hole and the air outlet through hole which are processed on the cast iron shell are arranged diagonally on the surface where the air inlet through hole and the air outlet through hole are located.
Further, a plurality of reinforcing rib plates are fixedly arranged on the cast iron shell in parallel at equal intervals, gas flow holes on two adjacent reinforcing rib plates are oppositely arranged, the gas flow hole on one reinforcing rib plate is close to the air cooling contact surface, and the gas flow hole on the other adjacent reinforcing rib plate is close to the surface of the processed air outlet through hole.
Further, the cross section of the gas flow hole on the reinforcing rib plate is a rectangular hole, the length dimension of the rectangular hole is 5mm, and the width dimension of the rectangular hole is 3mm.
Further, the cross section of the gas flow hole on the reinforcing rib plate is a circular hole, and the diameter of the circular hole is 4mm.
Further, the cast iron shell is a sealed rectangular box body formed by welding a cast iron plate, and a plurality of reinforcing rib plates are fixed on the inner side wall of the cast iron shell in an equidistant parallel welding mode.
Further, the periphery of the reinforcing rib plate is arranged in a sealing way with the inner side wall of the cast iron shell.
Further, the cast iron shell is 50-200 mm in length, 50-200 mm in width and 50mm in height.
Compared with the prior art, the invention has the following effects:
1. The cold iron has lower preparation cost, adopts traditional cast iron welding, and can be designed in size and shape according to the required shape and cooling capacity. The air cooling chiller structure is characterized by adopting cast iron materials, and is developed according to the thought that the air cooling chiller structure is not easy to deform under large temperature change according to the low thermal expansion coefficient of the air cooling chiller structure.
2. The reinforcing rib plate structure in the air-cooled chiller reduces the thickness of the shell in the contact area with the casting mould while ensuring the strength, reduces the cooling effect of the air-cooled chiller shell and prevents the corresponding area from being chilled before ventilation.
3. According to the air-cooled chiller, the gas flow channels meeting cooling requirements are designed by arranging the reinforcing rib plate positions and reserving the gas flow holes in the reinforcing rib plate, cooling gas is restricted to flow close to the contact area of the chiller and the casting, and the air-cooled cooling efficiency is improved.
4. The air-cooled chiller of the application is used in sand casting: when cold air is not introduced, the thickness of the cold iron shell is small, and the heat storage capacity is small, so that the smoothness of a filling flow channel can be ensured, and solidification is not caused in advance; after the mold filling is completed, cold air is introduced to cool the chill, so that the corresponding parts of the casting are forcedly cooled, and the effect of the traditional chill is realized. In a word, the air-cooled chiller can play a role in regulating and controlling a temperature field of a casting in the process of filling and solidifying as required in the casting forming process, so that the filling flow can be ensured, and forced cooling in solidification can be realized. The chill can also be applied to the field of intelligent sand casting, and the full-flow intelligent control is realized by matching with the use of a control system.
Drawings
FIG. 1 is a schematic illustration of a chiller arrangement for a prior art sand casting structure;
FIG. 2 is a schematic diagram of a prior art air-cooled chiller;
FIG. 3 is a schematic view of a cast iron housing 1 according to the invention;
Fig. 4 is a front view of the reinforcing plate 2 of the present invention;
fig. 5 is a side view of the reinforcing plate 2 of the present invention;
FIG. 6 is a front elevational view of the overall structure of the present invention;
FIG. 7 is a view from A-A in FIG. 6, with the direction of the arrows being the direction of the cool air movement, in accordance with the present invention;
fig. 8 is a view in the direction B-B of fig. 6 of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The first embodiment is as follows: referring to fig. 3 to 8, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in the present embodiment is described, which includes a cast iron housing 1 and a reinforcing rib plate 2; the air cooling type cooling and heating device is characterized in that air flow holes are processed on the reinforcing rib plates 2, a plurality of reinforcing rib plates 2 are arranged on the inner side wall of the cast iron shell 1 side by side, an air inlet through hole 3 and an air outlet through hole 4 are processed on the cast iron shell 1, the air inlet through hole 3 and the air outlet through hole 4 are located on the same plane of the cast iron shell 1, the air inlet through hole 3 and the air outlet through hole 4 are respectively close to the side surfaces of two sides of the cast iron shell 1, the air cooling contact surface of the cast iron shell 1 is opposite to the surface of the processed air inlet through hole 3, the periphery of the reinforcing rib plates 2 are respectively connected with the inner side wall of the cast iron shell 1, and cold air flows out through the air flow holes on the plurality of reinforcing rib plates 2 and the S-shaped channels of the air outlet through holes 4 after entering the air inlet through hole 3.
The second embodiment is as follows: referring to fig. 3 and 6, an S-shaped channel thin-wall efficient air-cooled iron for magnesium aluminum light alloy sand casting according to the present embodiment will be described, wherein the cast iron housing 1 is a rectangular housing having a wall thickness of 3mm and made of cast iron material. Other compositions and connection relationships are the same as those of the first embodiment.
And a third specific embodiment: referring to fig. 4 and 5, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in this embodiment is described, the reinforcing rib plate 2 is a rectangular plate, the thickness of the rectangular plate is 3mm, the rectangular plate is a plate body made of cast iron material, and the air flow hole is formed at one end of the rectangular plate. Other compositions and connection relationships are the same as those of the first embodiment.
The specific embodiment IV is as follows: referring to fig. 3 and 6, the S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in this embodiment is described, and the air inlet through hole 3 and the air outlet through hole 4 machined in the cast iron housing 1 are diagonally arranged on the surface. Other compositions and connection relationships are the same as those of the first embodiment.
Fifth embodiment: referring to fig. 3 to 8, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in this embodiment is described, a plurality of reinforcing rib plates 2 are fixed on a cast iron shell 1 in parallel at equal intervals, gas flow holes on two adjacent reinforcing rib plates 2 are oppositely arranged, gas flow holes on one reinforcing rib plate 2 are arranged close to an air-cooled contact surface, and gas flow holes on another adjacent reinforcing rib plate 2 are arranged close to a surface where an air outlet through hole 4 is processed.
The cold air forms an S-shaped channel between the adjacent reinforcing rib plates 2 and the cast iron shell 1 and forms a cold air running direction. Other compositions and connection relationships are the same as those of the third embodiment.
Specific embodiment six: referring to fig. 3 and 6, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in this embodiment will be described, wherein the cross section of the gas flow hole on the reinforcing rib plate 2 is a rectangular hole, the length dimension of the rectangular hole is 5mm, and the width dimension of the rectangular hole is 3mm. Other compositions and connection relationships are the same as those of the fifth embodiment.
Seventh embodiment: the S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting in the embodiment has the advantages that the cross section of the gas flow hole on the reinforcing rib plate 2 is a circular hole, and the diameter of the circular hole is 4mm. Other compositions and connection relationships are the same as those of the fifth embodiment.
Eighth embodiment: referring to fig. 3 and 6, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in the present embodiment will be described, in which a cast iron casing 1 is a rectangular box body sealed by welding a cast iron plate, and a plurality of reinforcing rib plates 2 are fixed on the inner side wall of the cast iron casing 1 in parallel and equidistant manner. Other compositions and connection relationships are the same as those of the second embodiment.
Detailed description nine: referring to fig. 3 and 6, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in the present embodiment is described, and the periphery of the reinforcing rib plate 2 is sealed with the inner side wall of the cast iron housing 1. Other compositions and connection relationships are the same as those of the second embodiment.
Detailed description ten: referring to fig. 3 and 6, an S-shaped channel thin-wall efficient air-cooled iron for sand casting of light magnesium aluminum alloy in this embodiment will be described, wherein the cast iron housing 1 has a length dimension of 50mm to 200mm, the cast iron housing 1 has a width dimension of 50mm to 200mm, and the cast iron housing 1 has a height dimension of 50mm. Other compositions and connection relationships are the same as those of the second embodiment.
The foregoing description is only of the preferred embodiments of the invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. An S-shaped channel thin-wall efficient air-cooled iron for magnesium aluminum light alloy sand casting is characterized in that: the cast iron comprises a cast iron shell (1) and reinforcing rib plates (2); the processing has the gas flow hole on deep floor (2), a plurality of deep floor (2) set up side by side on the inside wall of cast iron shell (1), processing has air inlet hole (3) and vent out through-hole (4) on cast iron shell (1), and air inlet hole (3) and vent out through-hole (4) are located the coplanar of cast iron shell (1), air inlet hole (3) and vent out through-hole (4) are close to the side setting of cast iron shell (1) both sides respectively, and the forced air cooling contact surface of cast iron shell (1) sets up with the face of processing air inlet hole (3) relatively, be connected with the inside wall of cast iron shell (1) respectively around deep floor (2), the cold wind flows through the gas flow hole on a plurality of deep floor (2) and the S-shaped passageway that vent out through-hole (4) after entering air inlet hole (3) in proper order.
2. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 1, which is characterized in that: the cast iron shell (1) is a rectangular shell, the wall thickness of the rectangular shell is 3mm, and the rectangular shell is made of cast iron materials.
3. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 1, which is characterized in that: the reinforcing rib plate (2) is a rectangular plate, the thickness of the rectangular plate is 3mm, the rectangular plate is a plate body made of cast iron materials, and the gas flow holes are formed in one end of the rectangular plate.
4. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 1, which is characterized in that: the air inlet through hole (3) and the air outlet through hole (4) which are processed on the cast iron shell (1) are arranged diagonally on the surface.
5. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 3, wherein the S-shaped channel thin-wall efficient air-cooled chiller is characterized in that: the reinforcing rib plates (2) are fixedly arranged on the cast iron shell (1) in an equidistant parallel manner, gas flow holes on two adjacent reinforcing rib plates (2) are oppositely arranged, the gas flow hole on one reinforcing rib plate (2) is close to an air cooling contact surface, and the gas flow hole on the other adjacent reinforcing rib plate (2) is close to a surface for processing the air outlet through hole (4).
6. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 5, wherein the S-shaped channel thin-wall efficient air-cooled chiller is characterized in that: the cross section of the gas flow hole on the reinforcing rib plate (2) is a rectangular hole, the length dimension of the rectangular hole is 5mm, and the width dimension of the rectangular hole is 3mm.
7. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 5, wherein the S-shaped channel thin-wall efficient air-cooled chiller is characterized in that: the cross section of the gas flow hole on the reinforcing rib plate (2) is a circular hole, and the diameter of the circular hole is 4mm.
8. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 2, which is characterized in that: the cast iron shell (1) is a sealed rectangular box body formed by welding a cast iron plate, and a plurality of reinforcing rib plates (2) are fixed on the inner side wall of the cast iron shell (1) in an equidistant parallel welding mode.
9. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 2, which is characterized in that: the periphery of the reinforcing rib plate (2) is sealed with the inner side wall of the cast iron shell (1).
10. The S-shaped channel thin-wall efficient air-cooled chiller for magnesium aluminum light alloy sand casting according to claim 2, which is characterized in that: the length dimension of the cast iron shell (1) is 50mm-200mm, the width dimension of the cast iron shell (1) is 50mm-200mm, and the height dimension of the cast iron shell (1) is 50mm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118218555A true CN118218555A (en) | 2024-06-21 |
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