CN220127543U - Metal mold casting mold - Google Patents
Metal mold casting mold Download PDFInfo
- Publication number
- CN220127543U CN220127543U CN202321409405.1U CN202321409405U CN220127543U CN 220127543 U CN220127543 U CN 220127543U CN 202321409405 U CN202321409405 U CN 202321409405U CN 220127543 U CN220127543 U CN 220127543U
- Authority
- CN
- China
- Prior art keywords
- riser
- mold
- cavity
- magnesium alloy
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005266 casting Methods 0.000 title claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 title claims abstract description 38
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 52
- 239000010425 asbestos Substances 0.000 claims abstract description 18
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000009423 ventilation Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 210000002268 wool Anatomy 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 27
- 230000007547 defect Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 11
- 238000009833 condensation Methods 0.000 abstract description 10
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000004321 preservation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011261 inert gas Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical class OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a metal mold casting mold, which comprises a cavity and a riser, wherein one side of the riser is communicated with the cavity, the other side of the riser is communicated with the external environment through an exhaust hole, and heat preservation asbestos coatings are adhered to the inner wall of the cavity and the inner wall of the riser. By adopting the technical scheme of the utility model, the riser is communicated with the external environment only through the vent hole with limited caliber, and can be used for feeding inert gas through the vent hole so as to remove oxygen in the cavity, so that molten magnesium alloy liquid is condensed in an inert gas protection atmosphere, oxidation or ignition of the molten magnesium alloy liquid can be avoided, inclusion defects of magnesium alloy castings are improved, the riser also has a replenishing effect on the molten magnesium alloy liquid in the condensation process, the effects of preventing the castings from generating shrinkage cavity, shrinkage porosity and slag collection defects are achieved, in addition, the heat insulation asbestos coating slows down the condensation heat dissipation speed of the molten magnesium alloy liquid, the defects of easy cold insulation, lack casting and the like of the magnesium alloy castings are avoided, and the molding quality of the magnesium alloy castings is further improved.
Description
Technical Field
The utility model belongs to the technical field of metal mold casting molds, and particularly relates to a metal mold casting mold.
Background
The casting process of metal mold is commonly called hard mold casting, which is to use metal material to make mold, then pour molten metal into the cavity of metal mold, and form casting after the molten metal is condensed. However, the metal mold casting also has the defect of insufficient heat storage capacity of the mold, and in the condensation process of the molten metal liquid, the metal mold is a good heat conductor, so that the molten metal liquid dissipates heat too quickly, the casting is easy to generate defects such as cold shut, undercasting and the like, particularly for thin-wall magnesium alloy castings, the defects such as cold shut, undercasting and the like are more obvious due to the thickness of the casting wall, in addition, the molten magnesium alloy liquid is extremely easy to oxidize in the cavity of the metal mold due to extremely low burning point of the magnesium alloy material, even the molten magnesium alloy liquid is burnt, so that the magnesium alloy casting generates inclusion defects, and the performance of the finally obtained magnesium alloy casting is influenced.
In the prior art, the publication number is: the patent document of CN105436409A discloses a precision investment casting method of magnesium alloy, which comprises the steps of firstly adopting 3D laser to print to prepare a wax mould, then adopting ZrO2 as a surface layer and a two-layer sand material, adopting a roasting method to remove resin to enable the wax mould to be fully combusted, soaking a mould shell cavity into a hot saturated boric acid aqueous solution with the temperature of 90-100 ℃ after roasting, introducing mixed protective gas with the volume fraction ratio of HFC134a to Ar=30 to 70 before casting, and continuously scattering a proper amount of sulfur to the liquid surface and riser of a magnesium alloy casting ladle during casting, thereby effectively preventing oxidation and combustion of the magnesium alloy. According to the technical method, the 3D laser printing is adopted to prepare the wax pattern, so that the dimensional accuracy and the surface smoothness of the magnesium alloy casting are ensured; zrO2 is used for preventing the magnesium alloy melt from reacting with the casting mould; the method is suitable for investment casting of thin-wall magnesium alloy castings, but is not suitable for metal mold dies, because the metal mold dies are good conductors of heat, molten magnesium alloy liquid dissipates heat too quickly, so that the finally obtained magnesium alloy castings are easy to generate defects such as cold shut, undercasting and the like, in order to avoid the defects of the castings, a riser is usually arranged in the metal mold dies, the riser is a cavity communicated with a cavity, and replenishing metal is formed in the condensation process of the molten metal liquid, so that the effects of preventing shrinkage cavity, shrinkage porosity, exhaust and slag collection are achieved, however, the additionally arranged riser increases the chance of oxygen in the molten magnesium alloy liquid and the external environment, the molten magnesium alloy liquid is extremely easily oxidized in the cavity of the metal mold dies, even is burnt, so that the magnesium alloy castings generate inclusion defects, and the performance of the finally obtained magnesium alloy castings is influenced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a metal mold casting mold.
The utility model is realized by the following technical scheme.
The utility model provides a metal mold casting mold which is used for casting and molding a thin-wall magnesium alloy casting, and comprises a cavity and a riser, wherein one side of the riser is communicated with the cavity, the other side of the riser is communicated with the external environment through an exhaust hole, and heat preservation asbestos coatings are adhered to the inner wall of the cavity and the inner wall of the riser.
The riser is internally filled with a plug, the exhaust hole penetrates through the plug, and the heat-insulating asbestos coating is further attached to the surface of the plug.
The thickness of the heat preservation asbestos coating is 0.1 mm-0.3 mm.
The aperture of the exhaust hole is not more than phi 3mm.
The cavity is also communicated with the external environment through a ventilation groove.
And a ventilation plug is also filled in the ventilation groove.
The cavity is also communicated with the straight pouring gate, a pouring gate nest is arranged between the straight pouring gate and the cavity, and steel wool is placed in the pouring gate nest.
The sprue is also communicated with the pouring cup.
The metal mold casting mold further comprises an upper mold and a lower mold, the upper mold and the lower mold are stacked in sequence from top to bottom, the cavity is arranged between the upper mold and the lower mold, and the riser is arranged in the upper mold.
And a push rod is also arranged in the lower die.
The utility model has the beneficial effects that: according to the technical scheme, one side of the riser which is communicated with the external environment is plugged, the existing riser structure is changed into the blind riser structure, and the riser is communicated with the external environment only through the vent hole with a limited caliber; on the other hand, the magnesium alloy liquid has the replenishing effect in the liquid cooling process of the molten magnesium alloy, has the effect of preventing the casting from generating shrinkage cavity, shrinkage porosity and slag collection defects, and in addition, as the heat preservation asbestos coating is adhered to the inner wall of the cavity and the inner wall of the riser, the condensation heat dissipation speed of the molten magnesium alloy liquid can be slowed down, the defects of easy cold insulation, lack casting and the like of the magnesium alloy casting are avoided, and the forming quality of the magnesium alloy casting is further improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1-cavity, 2-riser, 3-exhaust hole, 4-heat preservation asbestos coating, 5-plug, 6-ventilation groove, 7-ventilation plug, 8-sprue, 9-sprue nest, 10-steel wool, 11-pouring cup, 12-upper die, 13-lower die and 14-ejector rod.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
As shown in fig. 1, the utility model provides a metal mold casting mold, which is used for casting and forming a thin-wall magnesium alloy casting, and comprises a cavity 1 and a riser 2, wherein one side of the riser 2 is communicated with the cavity 1, the other side of the riser 2 is communicated with the external environment through an exhaust hole 3, and a thermal insulation asbestos coating 4 is adhered to the inner wall of the cavity 1 and the inner wall of the riser 2.
According to the technical scheme, one side of the riser which is communicated with the external environment is plugged, the existing riser structure is changed into the blind riser structure, and the riser is communicated with the external environment only through the vent hole with a limited caliber; on the other hand, the magnesium alloy liquid has the replenishing effect in the liquid cooling process of the molten magnesium alloy, has the effect of preventing the casting from generating shrinkage cavity, shrinkage porosity and slag collection defects, and in addition, as the heat preservation asbestos coating is adhered to the inner wall of the cavity and the inner wall of the riser, the condensation heat dissipation speed of the molten magnesium alloy liquid can be slowed down, the defects of easy cold insulation, lack casting and the like of the magnesium alloy casting are avoided, and the forming quality of the magnesium alloy casting is further improved.
Specifically, the riser 2 is also filled with a plug 5, the exhaust hole 3 penetrates through the plug 5, and the heat-insulating asbestos coating 4 is also attached to the surface of the plug 5. Preferably, the aperture of the vent hole 3 is not more than phi 3mm. Because the aperture of the vent hole 3 is extremely small, the riser structure reduces the contact opportunity of molten magnesium alloy liquid and oxygen in the external environment, can avoid oxidation or ignition of the molten magnesium alloy liquid, improve the inclusion defect of magnesium alloy castings, and can further send inert gas through the vent hole by an operator in the condensation process of the molten magnesium alloy liquid so as to remove oxygen in a cavity, so that the molten magnesium alloy liquid is condensed in the inert gas protection atmosphere, and further improve the inclusion defect of the magnesium alloy castings.
The thickness of the asbestos coating 4 is 0.1mm to 0.3mm. The heat preservation asbestos coating can be prepared by uniformly mixing asbestos, chalk powder, sodium silicate, boric acid and hot water with the temperature of more than 60 ℃, and as the heat preservation asbestos coating is adhered to the inner wall of the cavity and the inner wall of the riser, the heat preservation asbestos coating is a hot bad conductor, so that the condensation heat dissipation speed or condensation speed of molten magnesium alloy liquid can be slowed down, the defects that a magnesium alloy casting is easy to generate cold insulation, lack casting and the like are avoided, and the forming quality of the magnesium alloy casting is further improved.
Further, the cavity 1 is also in communication with the external environment through the vent 6. The vent groove 6 is also filled with a vent plug 7. So that when an operator sends inert gas through the exhaust hole, oxygen in the cavity can be removed through the vent groove 7, and after the oxygen in the cavity is removed, the vent groove 6 can be sealed by adopting the vent plug 7, so that the condensation process of the molten magnesium alloy liquid is in the inert gas protection atmosphere, and the defect of magnesium alloy castings inclusion is further improved.
In addition, the die cavity 1 is also communicated with a sprue 8, a sprue nest 9 is further arranged between the sprue 8 and the die cavity 1, and steel wool 10 is placed in the sprue nest 9. The sprue 8 is also in communication with a pouring cup 11. The steel wool 10 is formed by twisting a plurality of steel wires into a round shape, and when molten magnesium alloy liquid is injected through the pouring cup 11, the steel wool 10 has adsorption or filtration effect on impurities in the molten magnesium alloy liquid, so that the defect of inclusion in a finally obtained magnesium alloy casting is avoided.
In addition, the metal mold casting mold further comprises an upper mold 12 and a lower mold 13, wherein the upper mold 12 and the lower mold 13 are stacked in sequence from top to bottom, the cavity 1 is arranged between the upper mold 12 and the lower mold 13, a parting surface is formed on a joint surface between the upper mold 12 and the lower mold 13 so as to facilitate removal of a molded casting, and the riser 2 is arranged in the upper mold 12. A push rod 14 is also arranged in the lower die 13. Thereby facilitating ejection of the molded casting.
Claims (10)
1. A metal mold casting mold, characterized in that: the metal mold casting mold is used for casting and molding a thin-wall magnesium alloy casting, the metal mold casting mold comprises a cavity (1) and a riser (2), one side of the riser (2) is communicated with the cavity (1), the other side of the riser (2) is communicated with the external environment through an exhaust hole (3), and a heat insulation asbestos coating (4) is adhered to the inner wall of the cavity (1) and the inner wall of the riser (2).
2. A metal mold casting mold according to claim 1, wherein: the riser (2) is internally filled with a plug (5), the exhaust hole (3) penetrates through the plug (5), and the heat insulation asbestos coating (4) is further attached to the surface of the plug (5).
3. A metal mold casting mold according to claim 1 or 2, characterized in that: the thickness of the heat insulation asbestos coating (4) is 0.1 mm-0.3 mm.
4. A metal mold casting mold according to claim 1 or 2, characterized in that: the aperture of the exhaust hole (3) is not more than phi 3mm.
5. A metal mold casting mold according to claim 1, wherein: the cavity (1) is also communicated with the external environment through a ventilation groove (6).
6. A metal mold casting mold according to claim 5, wherein: a ventilation plug (7) is also filled in the ventilation groove (6).
7. A metal mold casting mold according to claim 1 or 5, wherein: the cavity (1) is also communicated with the straight pouring channel (8), a pouring channel nest (9) is further arranged between the straight pouring channel (8) and the cavity (1), and steel wool (10) is placed in the pouring channel nest (9).
8. The metal mold casting mold according to claim 7, wherein: the sprue (8) is also communicated with a pouring cup (11).
9. A metal mold casting mold according to claim 1, wherein: the metal mold casting mold further comprises an upper mold (12) and a lower mold (13), wherein the upper mold (12) and the lower mold (13) are stacked in sequence from top to bottom, the cavity (1) is arranged between the upper mold (12) and the lower mold (13), and the riser (2) is arranged in the upper mold (12).
10. The metal mold casting mold according to claim 9, wherein: and a push rod (14) is also arranged in the lower die (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321409405.1U CN220127543U (en) | 2023-06-05 | 2023-06-05 | Metal mold casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321409405.1U CN220127543U (en) | 2023-06-05 | 2023-06-05 | Metal mold casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220127543U true CN220127543U (en) | 2023-12-05 |
Family
ID=88954184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321409405.1U Active CN220127543U (en) | 2023-06-05 | 2023-06-05 | Metal mold casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220127543U (en) |
-
2023
- 2023-06-05 CN CN202321409405.1U patent/CN220127543U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103212672B (en) | Method for casting low speed diesel engine cylinder cap for large cylinder diameter boat | |
| US6578623B2 (en) | Ceramic core and method of making | |
| CN101406932B (en) | Precision-investment casting method | |
| CN100577324C (en) | Casting method for heavy combustion engine II-stage diverter blade | |
| CN109093098B (en) | Exhaust method for magnesium alloy complex closed core | |
| CN101554644B (en) | Lost foam casting process suitable for aluminum alloy materials | |
| CN101559484B (en) | Vacuum gravity casting method of aircraft engine block | |
| CN105750515A (en) | Small-capacity master alloy casting system | |
| CN113996759B (en) | Aluminum lithium alloy casting adopting shell to inhibit interface reaction and casting method thereof | |
| CN104014738A (en) | Combined core for casting tiny channels and application method thereof | |
| CN108057840A (en) | A kind of formula of the water base lost foam paint of low-temperature high-strength magnesium iron | |
| CN220127543U (en) | Metal mold casting mold | |
| CN1223420C (en) | Sand mould negative pressure gravity casting method | |
| CN212917558U (en) | Sand-coated chilling block structure | |
| CN102179497B (en) | Process for performing casting under negative pressure condition | |
| CN202527690U (en) | Solidification system for manufacturing magnesium alloy casting ingot | |
| CN204953820U (en) | A after treatment equipment for dewaxing in casting | |
| US4566518A (en) | Method of heat retention in a blind riser | |
| US3389743A (en) | Method of making resinous shell molds | |
| CN114643336A (en) | V-method casting process of nodular cast iron casting | |
| CN203956020U (en) | A kind of casting thin channel combined type core | |
| CN108941468B (en) | Sand casting method for slender cast iron rod | |
| RU171686U1 (en) | PROFIT MODEL ON THE BASIS OF FOAM POLYSTYRENE FOR CASTING ON GASIFIED MODELS | |
| JPH04333343A (en) | Manufacture of ceramic shell mold | |
| CN1369337A (en) | Technology for die-casting aluminium alloy without pattern taper in cold room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |