Aluminum alloy casting machine adopting direct-current electromagnetic power mold filling system

Abstract

The utility model discloses an aluminum alloy casting machine adopting a direct-current electromagnetic power mold filling system. The aluminum alloy casting machine comprises a vertical aluminum alloy casting machine, an aluminum alloy holding furnace and the direct-current electromagnetic power mold filling system, the direct-current electromagnetic power mold filling system is mounted on the aluminum alloy holding furnace; the vertical aluminum alloy casting machine is communicated with the aluminum alloy holding furnace through the direct-current electromagnetic power mold filling system; the direct-current electromagnetic power mold filling system comprises a direct-current electromagnetic power mold filling control system, an electrode, a ceramic tube and a riser tube; the ceramic tube is mounted at an outlet of a soup adding chamber of the heat preservation furnace, and the other end of the ceramic tube is communicated with the liquid rising tube; the liquid rising pipe can be located at the position aligned with a molten aluminum inlet in the mold. The direct-current electromagnetic power mold filling system is controlled by a direct-current electromagnetic power mold filling control system to start, the direct-current electromagnetic power mold filling control system is electrically connected with the electrodes, and the electrodes and the ceramic tube are fixed and sealed into a whole.

Description

Technical Field

[0001] The utility model relates to an aluminum alloy casting machine, in particular to an aluminum alloy casting machine which is suitable for adopting a direct current electromagnetic power mold filling system. Background Art

[0002] At present, when traditional pneumatic aluminum alloy casting machines produce castings, a riser pipe is inserted into the aluminum liquid in the holding furnace, and the other end of the riser pipe is connected to the mold on the casting machine. Then the pressurization system fills compressed air into the furnace of the holding furnace. When the air pressure in the furnace of the holding furnace increases, the aluminum liquid is forced to rise upward along the bottom port of the riser pipe in the aluminum liquid and fill into the casting mold to complete the filling.

[0003] The above-mentioned existing pneumatic aluminum alloy holding furnace uses compressed air as a driving source to drive the aluminum liquid into the mold for filling during the casting process. Due to the temperature change of the compressed air, the change of the liquid level during the filling process and the expansion of the air, it is difficult to achieve the predetermined accuracy in pressure control.

[0004] In the above-mentioned existing pneumatic aluminum alloy holding furnace, each mold needs to undergo a cycle of inflation to deflation during the casting process. Compressed air is repeatedly filled in, and the water vapor in the compressed air penetrates into the aluminum liquid, causing the gas content of the aluminum liquid to exceed the standard. The surface of the aluminum liquid will also produce a large amount of oxide slag in and on the surface of the aluminum liquid due to repeated filling of air. Summary of the invention

[0005] In view of the above technical problems, the purpose of the utility model is to provide a new aluminum liquid pressurization driving technology, namely, DC electromagnetic power filling technology, when the aluminum liquid is kept warm in the aluminum alloy holding furnace. The entire pressurization filling process no longer requires compressed air, and the insulation filling process of aluminum alloy casting is completely carried out by controllable electromagnetic thrust.

[0006] The DC electromagnetic power filling system used in the utility model is a device for conveying aluminum alloy fluid. Its principle is to use the electromagnetic driving force generated by the joint action of DC current and magnetic field to directly act on the conductive aluminum liquid, causing it to move in a directional manner, so that the aluminum liquid in the riser is driven by the electromagnetic force to fill the mold to complete the filling.

[0007] An aluminum alloy casting machine using a DC electromagnetic power filling system mainly includes: an aluminum alloy casting machine 1, an aluminum alloy holding furnace 2, and a DC electromagnetic power filling system 3; the DC electromagnetic power filling system 3 is installed on the aluminum alloy holding furnace 2; the aluminum alloy casting machine 1 is connected to the aluminum alloy holding furnace 2 through the DC electromagnetic power filling system 3.

[0008] The aluminum alloy casting machine 1 mainly includes molds 1-3, etc.; the aluminum alloy holding furnace 2 mainly includes a holding furnace plus a soup chamber 2-1, etc.; the DC electromagnetic power filling system 3 mainly includes: a DC electromagnetic power filling control system 3-1, an electrode 3-2, a ceramic tube 3-3, a liquid riser 3-5, etc.

[0009] The ceramic tube 3-3 is installed at the outlet position of the insulation furnace soup chamber 2-1, and the other end of the ceramic tube 3-3 is connected to the liquid riser 3-5; the liquid riser 3-5 can be in a position aligned with the aluminum liquid inlet on the mold 1-3.

[0010] The DC electromagnetic power filling system 3 is controlled and started by the DC electromagnetic power filling control system 3-1. The DC electromagnetic power filling control system 3-1 is electrically connected to the electrode 3-2. The electrode 3-2 is fixedly sealed with the ceramic tube 3-3. After the electrode 3-2 is energized, the aluminum liquid in the ceramic tube 3-3 generates thrust. The aluminum liquid 2-3 in the insulation furnace passes through the ceramic tube 3-3 and is pushed by the thrust of the DC electromagnetic power filling system 3, so that the aluminum liquid in the aluminum alloy insulation furnace 2 is pressed into the mold 1-3 for casting.

[0011] Furthermore, the aluminum alloy insulation furnace 2 also includes an insulation furnace door 2-2 and an insulation furnace heating tube 2-4; the insulation furnace door 2-2 is arranged on the aluminum alloy insulation furnace 2 at a position away from the exit of the insulation furnace plus soup chamber 2-1, and the insulation furnace heating tube 2-4 is arranged in the insulation furnace plus soup chamber 2-1 near the insulation furnace door 2-2 and the exit of the insulation furnace plus soup chamber 2-1.

[0012] Furthermore, the DC electromagnetic power filling control system 3-1 is electrically connected to the electrode 3-2 via the wiring copper bus 3-4.

[0013] The thrust generated by the DC electromagnetic power filling system 3 can be precisely adjusted in terms of force and pushing speed through the control system 3-1.

[0014] Furthermore, when producing large castings, the multiple riser tubes of the traditional pneumatic aluminum alloy insulation furnace are in the same furnace chamber, and the pressure of the aluminum liquid in each riser tube is consistent, which cannot meet the casting process of special products (it is impossible to independently control the aluminum liquid rising speed and pressure). In the utility model, multiple outlets of the insulation furnace plus soup chamber 2-1 are set on the aluminum alloy insulation furnace 2, and a DC electromagnetic power filling system 3 is set at the outlet of each insulation furnace plus soup chamber 2-1. Each DC electromagnetic power filling system 3 is independently controlled, and multiple DC electromagnetic power filling systems 3 correspond to different areas of the casting, so that the aluminum liquid in multiple riser tubes is driven by multiple electromagnetic forces and is filled into the mold with different rising pressures and speeds to complete the filling.

[0015] Furthermore, the aluminum alloy holding furnace 2 is driven by the holding furnace lifting and flipping mechanism 2-5 to perform lifting and flipping movements. After the aluminum alloy holding furnace 2 is lifted by the holding furnace lifting and flipping mechanism 2-5, the liquid riser 3-5 is aligned with the aluminum liquid inlet on the mold 1-3.

[0016] The advantages of the utility model are as follows: the DC electromagnetic power filling system has the characteristics of smooth transmission, continuous and accurate adjustment of the pressurized filling pressure, no need for sealing of the furnace body, and stable production process. When the filling and suspension processes in the aluminum alloy insulation process are realized by the DC electromagnetic power filling system, it has the following advantages: (1) The metal liquid is transmitted smoothly, and does not cause turbulence to cause oxidation and air absorption. At the same time, the aluminum alloy metal liquid passes through the magnetic field, which has a positive effect on improving the structure and performance of the casting; (2) The aluminum liquid has little liquid level fluctuation under the impetus of electromagnetic power, and the pressurized filling pressure can be very accurate and respond quickly; (3) The insulation furnace body does not need to be sealed, and does not need to be repeatedly inflated and deflated. The protective film on the surface of the liquid is not easily damaged, thereby reducing the dissolution of gas; it completely isolates the liquid metal from the air, reduces the content of oxide inclusions in the casting, and improves the comprehensive mechanical properties of the casting; (4) The production process and production status are stable, and the consistency of casting quality is good; the flow control is accurate and continuously adjustable; (5) The molten metal in the furnace can be easily detected and controlled in temperature, degassed, replaced with filters, added with alloy elements or slag removed, etc., without stopping the production process; (6) The pressure and flow rate of the aluminum liquid are controlled at multiple points, thereby improving the yield and performance of the die-casting machine; (7) Automatic pouring can be realized, which greatly reduces the labor intensity of workers and improves the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side sectional view of an aluminum alloy casting machine adopting a DC electromagnetic power filling system according to an embodiment of the utility model.

[0018] Figure 2 This is a schematic structural diagram of an aluminum alloy casting machine that uses a DC electromagnetic power filling system according to an embodiment of the utility model.

[0019] Figure 3 This is a schematic diagram of a DC electromagnetic power filling system for an aluminum alloy casting machine that adopts a DC electromagnetic power filling system according to an embodiment of the utility model.

[0020] Figure 4 It is a structural schematic diagram of an aluminum alloy casting machine using multiple DC electromagnetic power filling systems according to an embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings.

[0022] Embodiment 1: The aluminum alloy holding furnace using a DC electromagnetic power filling system in this embodiment mainly comprises the following components: a vertical aluminum alloy casting machine 1, an aluminum alloy holding furnace 2, and a DC electromagnetic power filling system 3.

[0023] like Figure 1 , Figure 2 As shown, the vertical aluminum alloy casting machine 1 mainly comprises: a lower die platen 1-1, an upper die platen 1-2, a mold 1-3, etc. The mold 1-3 is arranged between the lower die platen 1-1 and the upper die platen 1-2.

[0024] The aluminum alloy insulation furnace 2 mainly comprises: an insulation furnace soup chamber 2-1, an insulation furnace door 2-2, insulation furnace aluminum liquid 2-3, an insulation furnace heating tube 2-4, an insulation furnace lifting and turning mechanism 2-5 and the like.

[0025] like Figure 3 As shown, the DC electromagnetic power filling system 3 mainly includes: a DC electromagnetic power filling control system 3-1, an electrode 3-2, a ceramic tube 3-3, a wiring copper bus 3-4, a liquid riser 3-5, etc.

[0026] The DC electromagnetic power filling system 3 is installed on the aluminum alloy holding furnace 2; the vertical aluminum alloy casting machine 1 is connected to the aluminum alloy holding furnace 2 through the DC electromagnetic power filling system 3.

[0027] The insulation furnace door 2-2 is arranged on the aluminum alloy insulation furnace 2 at a position away from the outlet of the insulation furnace plus soup chamber 2-1, and the insulation furnace heating pipe 2-4 is arranged in the insulation furnace plus soup chamber 2-1 near the insulation furnace door 2-2 and the outlet of the insulation furnace plus soup chamber 2-1.

[0028] The ceramic tube 3-3 is installed at the outlet position of the insulation furnace soup chamber 2-1, and the other end of the ceramic tube 3-3 is connected to the liquid riser 3-5; the aluminum alloy insulation furnace 2 can be driven by the insulation furnace lifting and flipping mechanism 2-5 to perform lifting and flipping movements; after the aluminum alloy insulation furnace 2 is lifted by the insulation furnace lifting and flipping mechanism 2-5, the liquid riser 3-5 is aligned with the aluminum liquid inlet on the mold 1-3, the control system 3-1 of the DC electromagnetic power filling system 3 is started, the electrode 3-2 is fixedly sealed with the ceramic tube 3-3, and the DC electromagnetic power filling control system 3-1 is electrically connected to the electrode 3-2 through the wiring copper bus 3-4.

[0029] After the electrode 3-2 is energized, the aluminum liquid in the ceramic tube 3-3 generates thrust, and the aluminum liquid 2-3 in the insulation furnace passes through the ceramic tube 3-3 and is pushed by the thrust of the DC electromagnetic power filling system 3, so that the aluminum liquid in the aluminum alloy insulation furnace 2 is pressed into the mold 1-3 for casting; the thrust generated by the DC electromagnetic power filling system 3 can be accurately adjusted in terms of force and pushing speed through the control system 3-1.

[0030] Example 2: Figure 4 As shown, the same as in Example 1, in view of the production requirements of large castings, three outlets of the holding furnace plus soup chamber 2-1 are set on the aluminum alloy holding furnace 2, and the DC electromagnetic power filling system 3, the second DC electromagnetic power filling system 4, and the third DC electromagnetic power filling system 5 are correspondingly set at the outlet. The DC electromagnetic power filling system 3, the second DC electromagnetic power filling system 4, and the third DC electromagnetic power filling system 5 are independently controlled and correspond to different areas of the casting, respectively. These groups of DC electromagnetic power filling systems can respectively control the rising speed and pressure of the aluminum liquid in their respective ceramic tubes 3-3, so as to realize multi-point control of the aluminum liquid pressure and flow rate, thereby improving the yield and performance of the die casting machine.

[0031] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An aluminum alloy casting machine using a DC electromagnetic power filling system, characterized in that: include: Aluminum alloy casting machine, aluminum alloy holding furnace, DC electromagnetic power filling system; the DC electromagnetic power filling system is installed on the aluminum alloy holding furnace; the aluminum alloy casting machine is connected with the aluminum alloy holding furnace through the DC electromagnetic power filling system; The aluminum alloy casting machine includes a mold; Aluminum alloy holding furnace includes holding furnace plus soup chamber; The DC electromagnetic power filling system includes: a DC electromagnetic power filling control system, electrodes, ceramic tubes, and a liquid riser; The ceramic tube is installed at the outlet of the holding furnace and the soup chamber, and the other end of the ceramic tube is connected to the liquid riser; the liquid riser can be aligned with the aluminum liquid inlet on the mold; The DC electromagnetic power filling system is started by a DC electromagnetic power filling control system, the DC electromagnetic power filling control system is electrically connected to the electrode, and the electrode is fixedly sealed with the ceramic tube as a whole.

2. The aluminum alloy casting machine using a DC electromagnetic power filling system according to claim 1, characterized in that: The aluminum alloy insulation furnace also includes an insulation furnace door and an insulation furnace heating tube; the insulation furnace door is arranged on the aluminum alloy insulation furnace at a position away from the outlet of the insulation furnace and soup chamber, and the insulation furnace heating tube is arranged in the insulation furnace and soup chamber near the insulation furnace door and the outlet of the insulation furnace and soup chamber.

3. The aluminum alloy casting machine using a DC electromagnetic power filling system according to claim 1, characterized in that: The DC electromagnetic power filling control system is electrically connected to the electrode through a wiring copper busbar.

4. The aluminum alloy casting machine using a DC electromagnetic power mold filling system according to claim 1, characterized in that: A plurality of insulation furnace and soup chamber outlets are arranged on the aluminum alloy insulation furnace, and a DC electromagnetic power filling system is arranged at each insulation furnace and soup chamber outlet. Each DC electromagnetic power filling system is independently controlled, and the plurality of DC electromagnetic power filling systems correspond to different areas of the casting.

5. The aluminum alloy casting machine using a DC electromagnetic power mold filling system according to claim 1, characterized in that: The aluminum alloy holding furnace is driven by the holding furnace lifting and turning mechanism to perform lifting and turning movements; after the aluminum alloy holding furnace is lifted by the holding furnace lifting and turning mechanism, the liquid riser is aligned with the aluminum liquid inlet on the mold.

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