Metal ceramic composite material production equipment

Abstract

The utility model provides metal ceramic composite material production equipment. The metal ceramic composite material production equipment comprises a metal smelting device and a composite material forming device, the metal smelting device is provided with a lower cavity, a crucible and a heating unit, wherein the crucible is used for containing metal liquid; and the crucible is arranged in the lower cavity. The composite material forming device comprises an upper cavity and a forming mold, wherein a ceramic blank and a heating and heat preservation device are placed in the forming mold; the forming die and the heating and heat preservation device are arranged in the upper cavity. The upper cavity and the lower cavity enable the metal liquid to permeate and be filled in the ceramic blank body in a vacuum environment so as to complete the metal ceramic composite material, and the metal ceramic composite material is produced in a fastest and safest production environment.

Description

Technical Field

[0001] The utility model relates to a composite material production device, in particular to a composite material production device for metal materials and ceramic materials. Background Art

[0002] Ceramic materials have excellent properties such as high hardness, high temperature resistance, wear resistance, excellent insulation and thermal shock resistance, high biocompatibility, and not easy to cause human allergies. Therefore, ceramic materials have been widely used in industrial applications that require high temperature resistance and wear resistance, as well as the production of equipment with high biocompatibility requirements.

[0003] However, ceramic materials are brittle, not impact-resistant, and have poor tensile and bending resistance, while metal materials generally have high mechanical strength, good toughness, good electrical conductivity and heat transfer, and are widely used in key parts in mechanical engineering and large components in all heavy industries. They have been widely used in industrial production. Therefore, the performance of metal-ceramic composite materials can be better utilized.

[0004] Usually, the ceramic volume ratio of metal-ceramic composite materials is 5-50%, and they are produced by stirring casting; but if the ceramic volume ratio is higher than 50%, pressure casting or pressureless infiltration will be used for production. Common pressure casting is melt forging and low-pressure casting, and even gravity casting and other technologies, and they are produced in a normal atmospheric environment, but this will cause the thermal conductivity of metal-ceramic composite materials to be too low and cannot be used in products.

[0005] The pressureless infiltration technology requires high wettability between metal and ceramic, so the process is complicated and the cost is too high. In addition, the powder metallurgy process also has the problem of density not being able to reach more than 98%, and the material properties are low.

[0006] Low-pressure infiltration uses air pressure to push molten metal into the mold to form a product. Although it can form thinner products, the fluidity of the molten metal in the mold is limited, and it is impossible to produce larger sizes or obtain complete metal-ceramic composite materials. Vacuum casting is to evacuate the mold and then use pressure difference to make the molten metal flow into the mold cavity. It can complete small-sized castings, but it is very difficult to produce larger composite materials. Utility Model Content

[0007] The main purpose of the utility model is to provide a metal-ceramic composite material production device which can be quickly and easily manufactured.

[0008] In order to achieve the above-mentioned purpose and effect, the utility model provides a metal-ceramic composite material production equipment, including: a metal smelting device, having a lower cavity, a crucible and a heating unit, the crucible is installed in the lower cavity, used to contain metal solid; the heating unit is surrounded by the crucible, used to melt the metal solid in the crucible into metal liquid; the wall surface of the lower cavity is provided with an air inlet valve. At this time, the lower cavity is pumped to 10 -4 The vacuum degree is set, and the air inlet valve is set to a working pressure of 0.5-10 MPa; and

[0009] A composite material forming device is located above the metal smelting device, and includes an upper cavity, a forming mold and a heating and heat preservation device; the forming mold and the heating and heat preservation device are arranged inside the upper cavity; a ceramic embryo is placed in the forming mold, and the forming mold and the crucible are connected by a liquid riser; an air intake valve is arranged on the wall of the upper cavity.

[0010] At this time, the upper cavity is pumped to 10 -4 The vacuum degree of the metal smelting device and the composite material forming device reaches 10 -4 After that, gas with a pressure of 0.5-10MPa first enters the lower cavity through the air inlet valve of the metal smelting device, and within 2-5 seconds, gas with a pressure of 0.5-10MPa enters the upper cavity through the air inlet valve of the composite material molding device; when the pressures of the upper and lower cavities reach equilibrium, the metal smelting device is maintained at a pressure 0.2-1MPa higher than the original set pressure value for 5-10 seconds, so that a pressure difference is generated between the interior of the lower cavity and the interior of the upper cavity, and the metal liquid in the crucible is transported to the molding mold through the riser pipe, and infiltrated into and filled in the interior and surface of the ceramic embryo; after the molding mold is cooled, the metal-ceramic composite material can be taken out.

[0011] The utility model metal-ceramic composite material production equipment can reduce the generation of oxides through the control of vacuum environment and pressure difference, and can complete multiple products in a short time, and can meet the production of various metal-ceramic composite materials.

[0012] In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention in detail. However, the drawings are for reference and illustration only and are not intended to limit the present invention in any way. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2 It is a three-dimensional cross-sectional view of the utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model.

[0016] Figure 4 It is a cross-sectional view of the utility model in use state.

[0017] Explanation of the reference numerals: metal-ceramic composite material production equipment 10; metal smelting device 11; lower cavity 12; crucible 13; heating unit 14; air inlet valve 15; metal liquid 18 composite material molding device 20; upper cavity 21; molding mold 22; ceramic embryo 23; riser 24; air inlet valve 25; heating and heat preservation device 30; heating unit 31; insulation layer 32. DETAILED DESCRIPTION

[0018] See also Figures 1 to 4 As shown, the metal-ceramic composite material production equipment 10 of the utility model includes a metal smelting device 11 and a composite material forming device 20, and the composite material forming device 20 is located above the metal smelting device 11. The metal smelting device 11 has a lower cavity 12, a crucible 13 and a heating unit 14. The crucible 13 is installed in the lower cavity 12 to contain metal solids. The heating unit 14 surrounds the crucible 13 and is used to melt the metal solids in the crucible 13; the crucible 13 can be made of graphite, cast iron or other materials. The heating unit 14 is used to set a predetermined heating temperature depending on the material of the crucible 13, so that the crucible 13 is heated at a high temperature and the metal solid is melted into liquid at a certain temperature and time.

[0019] The wall surface of the lower cavity 12 is provided with an air inlet valve 15. At this time, the metal smelting device 11 is vacuum treated, and the lower cavity 12 is evacuated to 10 -4 The vacuum degree and the air inlet valve 15 are set to a working pressure of 0.5 to 10 MPa.

[0020] The composite material forming device 20 includes an upper cavity 21, a forming mold 22 and a heating and heat preservation device 30; and the forming mold 22 and the heating and heat preservation device 30 are arranged inside the upper cavity 21. The forming mold 22 can be made of graphite, silicon carbide, cast iron or other high temperature resistant materials, so that it is not easy to deform and damage at high temperatures. A ceramic embryo 23 is placed in the forming mold 22, and the ceramic embryo 23 is a porous structure. The forming mold 22 and the crucible 13 are connected by a liquid riser 24 to transport the metal liquid 18 in the crucible 13 to the forming mold 22, and penetrate into and fill the interior and surface of the ceramic embryo 23.

[0021] The heating and heat preservation device 30 is composed of a heating unit 31 and a heat preservation layer 32. The heating unit 31 is arranged inside the heat preservation layer 32, and is used to heat the ceramic body 23. The heating temperature is set in a range of 100 degrees greater than or less than the melting point of the metal. For example, if the melting point of aluminum alloy is 650 degrees, the heating temperature of the ceramic body 23 is set in a range of 550 to 750 degrees. When the heating unit 31 reaches the preset heating temperature, the heat preservation layer 32 will keep the ceramic body 23 warm.

[0022] The wall surface of the upper cavity 21 is provided with an air inlet valve 25. At this time, the composite material forming device 20 is vacuum treated, and the upper cavity 21 is evacuated to 10 -4 The vacuum degree and the air inlet valve 25 are set to a working pressure of 0.5 to 10 MPa.

[0023] In essence, the metal melting device 11 and the composite material forming device 20 are both sealed designs, except for the riser tube 24 .

[0024] like Figure 4 As shown, when the utility model is in use, a metal solid (such as aluminum alloy) is placed in the crucible 13, and the ceramic body 23 is placed in the forming mold 22, and the heating unit 31 of the heating and heat preservation device 30 is turned on to heat the forming mold 22 and the ceramic body 23 to the desired temperature.

[0025] When it is detected that the molding die 22 has been heated to a predetermined temperature, the metal melting device 11 and the composite material molding device 20 are subjected to vacuum treatment. When the vacuum degree of the lower cavity 12 and the upper cavity 21 reaches 10 -4 After that, gas with a pressure of 0.5-10MPa first enters the lower cavity 12 through the air inlet valve 15 of the metal smelting device 11, and within 2-5 seconds, gas with a pressure of 0.5-10MPa enters the upper cavity 21 through the air inlet valve 25 of the composite material forming device 20; when the pressures of the upper and lower cavities 21 and 12 reach equilibrium, the metal smelting device 11 is maintained at a pressure of 0.2-1MPa higher than the original set pressure value for 5-10 seconds, so that a pressure difference is generated between the interior of the lower cavity 12 and the interior of the upper cavity 21, and the metal liquid 18 in the crucible 13 is transported to the forming mold 22 through the riser 24, and infiltrates and fills the interior and surface of the ceramic embryo 23; after the temperature of the forming mold 22 is cooled, the finished product such as the metal-ceramic composite material can be taken out.

[0026] The metal-ceramic composite material production equipment 10 of the utility model can reduce the generation of oxides by controlling the vacuum environment and the pressure difference, and can complete multiple products in a short time, and can meet the production requirements of various metal-ceramic composite materials.

[0027] Although the present invention has been disclosed by the preferred embodiments described above, they are not intended to limit the present invention. Any person skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention, but all of them fall within the scope of protection of the present invention.

Claims

1. A metal-ceramic composite material production equipment, characterized in that: include: A metal smelting device comprises a lower cavity, a crucible and a heating unit. The crucible is installed in the lower cavity to contain metal solids. The heating unit surrounds the crucible to melt the metal solids in the crucible into metal liquid. The lower cavity has 10 -4 The lower cavity is provided with an air inlet valve, which is set to a working pressure of 0.5-10 MPa; and A composite material forming device is located above the metal smelting device, and comprises an upper cavity, a forming mold and a heating and heat preservation device; the forming mold and the heating and heat preservation device are arranged inside the upper cavity; a ceramic embryo is placed in the forming mold, and the forming mold and the crucible are connected by a liquid riser; the upper cavity has 10 -4 The upper cavity is provided with another air inlet valve, and the other air inlet valve is set to a working pressure of 0.5-10 MPa.

2. The metal-ceramic composite material production equipment according to claim 1, characterized in that: The heating and heat-insulating device of the composite material forming device comprises a heating unit and a heat-insulating layer, and the heating unit is arranged inside the heat-insulating layer to heat the ceramic embryo body.

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