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

Abstract

The utility model discloses an aluminum alloy casting machine adopting an alternating-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 alternating-current electromagnetic power mold filling system, the alternating-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 alternating-current electromagnetic power mold filling system; the alternating-current electromagnetic power mold filling system comprises an alternating-current electromagnetic power mold filling control system, an electromagnetic coil, 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 alternating-current electromagnetic power mold filling system is controlled by an alternating-current electromagnetic power mold filling control system to start, the alternating-current electromagnetic power mold filling control system is electrically connected with an electromagnetic coil, and the ceramic tube is sleeved with the electromagnetic coil.

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 an AC 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 pressurized driving technology, namely, AC electromagnetic power filling technology, when the aluminum liquid is kept warm in the aluminum alloy holding furnace. The entire pressurized 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 AC 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 combined action of AC 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 be filled into the mold to complete the filling.

[0007] An aluminum alloy casting machine using an AC electromagnetic power filling system mainly comprises: a vertical aluminum alloy casting machine 1, an aluminum alloy holding furnace 2, and an AC electromagnetic power filling system 3; the AC 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 AC electromagnetic power filling system 3.

[0008] The vertical aluminum alloy casting machine 1 mainly includes: a lower mold platen 1-1, an upper mold platen 1-2, a mold 1-3, etc. The mold 1-3 is arranged between the lower mold platen 1-1 and the upper mold platen 1-2; the aluminum alloy insulation furnace 2 mainly includes an insulation furnace plus a soup chamber 2-1, etc.; the AC electromagnetic power filling system 3 mainly includes: an AC electromagnetic power filling control system 3-1, an electromagnetic coil 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 AC electromagnetic power filling system 3 is controlled and started by the AC electromagnetic power filling control system 3-1. The AC electromagnetic power filling control system 3-1 is electrically connected to the electromagnetic coil 3-2. The electromagnetic coil 3-2 is sleeved on the outside of the ceramic tube 3-3. After the electromagnetic coil 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 AC electromagnetic power filling system 3, and 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 AC electromagnetic power filling control system 3-1 is electrically connected to the electromagnetic coil 3-2 via the wiring copper bus 3-4.

[0013] The thrust generated by the AC 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 an AC electromagnetic power filling system 3 is set at the outlet of each insulation furnace plus soup chamber 2-1. Each AC electromagnetic power filling system 3 is independently controlled, and multiple AC 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 AC 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 AC electromagnetic power filling system, it has the following advantages: ① Automatic pouring can be realized, which greatly reduces the labor intensity of workers and improves the working environment; ② The contact between liquid metal and air is completely isolated, the content of oxide inclusions in the casting is reduced, and the comprehensive mechanical properties of the casting are improved; ③ The flow control is accurate and continuously adjustable; ④ 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 The present invention is a schematic structural diagram of an aluminum alloy casting machine using an AC electromagnetic power filling system according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of an AC electromagnetic power filling system of an aluminum alloy casting machine adopting an AC electromagnetic power filling system according to an embodiment of the utility model.

[0020] Figure 4 It is a schematic structural diagram of an aluminum alloy casting machine using multiple AC 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 an AC 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 an AC 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 AC electromagnetic power filling system 3 mainly includes: an AC electromagnetic power filling control system 3-1, an electromagnetic coil 3-2, a ceramic tube 3-3, a wiring copper bus 3-4, a liquid riser 3-5, etc.

[0026] The AC electromagnetic power filling system 3 is installed on the aluminum alloy insulation furnace 2; the vertical aluminum alloy casting machine 1 is connected to the aluminum alloy insulation furnace 2 through the AC 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 AC electromagnetic power filling system 3 is started, the electromagnetic coil 3-2 is sleeved on the outside of the ceramic tube 3-3, and the AC electromagnetic power filling control system 3-1 is electrically connected to the electromagnetic coil 3-2 through the wiring copper bus 3-4.

[0029] After the electromagnetic coil 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 AC 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 AC 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 4As shown, the same as in Example 1, in view of the production requirements of large castings, three outlets of the insulation furnace plus soup chamber 2-1 are set on the aluminum alloy insulation furnace 2, and the outlets are correspondingly provided with an AC electromagnetic power filling system 3, a second AC electromagnetic power filling system 4, and a third AC electromagnetic power filling system 5. The AC electromagnetic power filling system 3, the second AC electromagnetic power filling system 4, and the third AC electromagnetic power filling system 5 are independently controlled and correspond to different areas of the casting, respectively. These groups of AC 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 an AC electromagnetic power filling system, characterized in that: include: Vertical aluminum alloy casting machine, aluminum alloy holding furnace, AC electromagnetic power filling system; The AC electromagnetic power filling system is installed on the aluminum alloy holding furnace; The vertical aluminum alloy casting machine is connected to the aluminum alloy holding furnace through an AC electromagnetic power filling system; The vertical aluminum alloy casting machine comprises: a lower die platen, an upper die platen, and a mold, wherein the mold is arranged between the lower die platen and the upper die platen; Aluminum alloy holding furnace includes holding furnace plus soup chamber; The AC electromagnetic power filling system includes: an AC electromagnetic power filling control system, an electromagnetic coil, a ceramic tube, 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 AC electromagnetic power filling system is started by the AC electromagnetic power filling control system, the AC electromagnetic power filling control system is electrically connected to the electromagnetic coil, and the electromagnetic coil is sleeved outside the ceramic tube.

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

4. The aluminum alloy casting machine using an AC electromagnetic power 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 an AC electromagnetic power filling system is arranged at each insulation furnace and soup chamber outlet. Each AC electromagnetic power filling system is independently controlled, and the plurality of AC electromagnetic power filling systems correspond to different areas of the casting.

5. The aluminum alloy casting machine using an AC electromagnetic power 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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