Aluminum transferring device capable of reducing air suction amount

Abstract

The utility model discloses an aluminum transferring device capable of reducing air suction amount, relates to the field of aluminum alloy casting, and solves the technical problem that the defect rate of a cast casting is high due to air suction in the existing molten aluminum flowing process. The pouring cup comprises a pouring cup body and a flow guide pipe, the pouring cup body is detachably connected with the flow guide pipe, the pouring cup body is in a funnel shape, the wall thickness of the vertical section of the pouring cup body is gradually changed from top to bottom, the flow guide pipe is obliquely arranged, the tail end of the flow guide pipe is located in a molten aluminum pool, and heat preservation coating layers are arranged on the inner wall of the pouring cup body and the inner wall of the flow guide pipe. And an aluminum water filter screen is detachably mounted at the joint of the pouring cup and the flow guide pipe. According to the aluminum transfer device, molten aluminum is isolated from air in the flowing process in the device during aluminum transfer, water vapor in the air is prevented from being absorbed in the flowing process, and the defect rate of castings cast by the molten aluminum is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aluminium alloy casting, more particularly, it relates to a turn aluminium device of reducing air suction. BACKGROUND

[0002] Aluminium liquid refers to liquid aluminium alloy, which is an important intermediate in the production process of aluminium products. Aluminium liquid is usually prepared by melting aluminium alloy materials, and its main components can be aluminium, silicon, magnesium, copper, manganese and the like. The temperature of aluminium liquid is usually 650-800 DEG C, and the viscosity is low, facilitating construction operation.

[0003] Aluminium liquid has a wide range of applications in industrial production, and is mainly used in the following fields:

[0004] Aluminium product production: aluminium liquid can be used to produce various aluminium products, such as aluminium doors and windows, aluminium alloy vehicle body, aluminium industrial parts and the like.

[0005] Vehicle manufacturing: aluminium liquid can be used to manufacture automobile parts, and plays an important role in improving the lightweight of vehicle body and fuel economy.

[0006] Subsequent processing: through processing methods such as die casting and extrusion of aluminium liquid, various shapes of aluminium products such as aluminium profiles, aluminium plates and aluminium pipes can be produced.

[0007] In the aluminium alloy casting process, aluminium liquid contacting air is easy to absorb water in air, so that the density of aluminium liquid decreases, causing casting defects such as porosity, pinhole and shrinkage. After refining and degassing, the aluminium liquid is transferred to a turn aluminium tank or a converter. The ordinary turn aluminium tank is open, that is, the aluminium liquid directly contacts air during flow, and there is a serious air suction phenomenon. After the transfer of aluminium liquid is completed, the density decreases by 0.15-0.25g / cm 3 , and the casting defect rate of the castings cast by such aluminium liquid is high. Therefore, reducing the air suction problem in the aluminium liquid transfer process is one of the important problems to be solved in the production process. UTILITY MODEL CONTENTS

[0008] The utility model solves the technical problem that the casting defect rate of the castings cast by the existing aluminium liquid is high due to air suction during the flow of the aluminium liquid.

[0009] The utility model discloses a turn aluminium device of reducing air suction, it includes the cup and the flow guide pipe of pouring, the cup and flow guide pipe are detachable connection, the cup is funnel -shaped, the vertical section wall thickness of the cup is gradually changed and is big gradually, the flow guide pipe is arranged obliquely, the end of the flow guide pipe is located in the aluminium liquid pool, the inner wall of the cup and flow guide pipe is equipped with the heat preservation coating layer, the connecting place between the cup and flow guide pipe is detachably installed with aluminium water filter screen.

[0010] Further, the intersection between the mesh holes on the aluminum water filter screen is provided with a protrusion.

[0011] Further, the inclination angle of the flow guide pipe is 30-60°.

[0012] Further, the flow guide pipe is a steel pipe, and the pouring cup is made of cast iron.

[0013] Further, the thickness of the inner wall of the flow guide pipe is 8-16mm.

[0014] Further, the pouring cup is connected with the flow guide pipe through a flange.

[0015] Further, the bottom inner wall of the pouring cup is provided with a plurality of limiting blocks, and the aluminum water filter screen is installed between the limiting blocks and the flange.

[0016] Beneficial effects

[0017] The advantages of the utility model lie in:

[0018] 1. The utility model discloses a pouring cup and a flow guide pipe, the pouring cup is connected with the flow guide pipe through a flange, the end of the flow guide pipe is located in an aluminum liquid pool, and the inner walls of the pouring cup and the flow guide pipe are all provided with a heat preservation coating layer, so that the aluminum liquid is isolated from air during flowing in the device when turning aluminum, the absorption of water vapor in the air during flowing is avoided, and the defect rate of castings cast by the aluminum liquid is reduced.

[0019] 2. The utility model discloses that an aluminum water filter screen is embedded between the pouring cup and the flow guide pipe, the intersection between the mesh holes on the aluminum water filter screen is provided with a protrusion, and the protrusion can reduce the residue of aluminum water on the filter screen and prevent the residue of aluminum water on the filter screen from affecting the filtering function of the filter screen. DRAWINGS

[0020] Fig. 1 It is a whole structure schematic view of the utility model discloses a turning aluminum device;

[0021] Fig. 2 It is an enlarged view of the aluminum water filter screen structure of the utility model discloses;

[0022] Fig. 3 It is an enlarged view of the turning aluminum device A of the utility model discloses.

[0023] 1-pouring cup, 2-aluminum water filter screen, 3-flow guide pipe, 4-aluminum liquid pool, 5-protrusion, 6-limiting block, 7-flange. CONCRETE IMPLEMENTATION

[0024] The utility model is further described below in combination with the embodiments, but does not constitute any limitation on the utility model, and the limited number of modifications made by anyone within the scope of the utility model claims is still within the scope of the utility model claims.

[0025] Referring to Figs. 1-3 The utility model discloses a reduce the aluminium device of inspiration amount, it includes the pouring cup 1 and the flow guide pipe 3, the pouring cup 1 is detachably connected with the flow guide pipe 3, the pouring cup 1 is funnel -shaped, the vertical section wall thickness of pouring cup 1 is gradually variable and is big gradually, the flow guide pipe 3 is arranged obliquely, and the end of flow guide pipe 3 is located in the aluminium liquid pool 4.

[0026] The heat preservation coating is baked to form a heat preservation coating layer after being brushed on the inner wall of the pouring cup 1 and the flow guide pipe 3, and the heat preservation coating layer is used for heat preservation of the aluminium liquid flowing in the device.

[0027] The aluminium liquid pool 4 is a device for melting and keeping aluminium liquid in hot state, usually constructed by refractory bricks or refractory castable, with good high-temperature resistance and thermal shock resistance. The aluminium liquid pool is often used in the melting and casting process of aluminium alloy, to ensure that the aluminium liquid remains stable in the molten state, facilitating subsequent processing and use.

[0028] The pouring cup 1 is a funnel-shaped cup made of cast iron. The thickness of the inner wall of the pouring cup 1 is 20-30mm, and the flow guide pipe 3 is a steel pipe. The thickness of the inner wall of the flow guide pipe 3 is 12mm. The thick inner wall of the pouring cup 1 and the flow guide pipe 3 can further heat preservation of the aluminium liquid during the flowing process, and also improve the service life of the device. The connection between the pouring cup 1 and the flow guide pipe 3 is detachably installed with an aluminium water filter screen 2. The aluminium liquid will gather at the funnel mouth of the pouring cup 1 and generate a large amount of heat. The gradually variable vertical section wall thickness of the pouring cup 1 can improve the service life of the pouring cup 1 and reduce the damage of heat to the bottom of the pouring cup 1.

[0029] The flow guide pipe 4 mainly guides the flow direction of the fluid, thereby improving the production efficiency. The inclination angle of the flow guide pipe 3 is 40°. The inclined arrangement of the flow guide pipe 3 makes the poured aluminium liquid flow slowly, preventing the aluminium liquid from splashing in the flow guide pipe 3.

[0030] The aluminium water filter screen 2 is woven by special process and processed after treatment. The product has become a series, with advanced process and stable quality. It is widely used in the casting and filtration of automobile, motorcycle hub, cylinder piston, aluminium rod, aluminium ingot, aluminium plate and various types of aluminium alloy parts. The aluminium water filter screen is made of high-temperature resistant fiber and woven by special process and processed after treatment. The product has become a series, with advanced process and stable quality. Compared with other types of filter screens, the high-temperature resistant fiber casting filter screen is low in price, easy to use, does not change the metal composition of the casting, has good filter residue effect and low gas emission. In addition, it also has good high-temperature resistance, ablation resistance, chemical stability, resistance to metal melt erosion and good steel strength.

[0031] The intersection between the mesh holes of the aluminum liquid filter screen 2 is provided with a protrusion 5. The protrusion 5 is arranged to reduce the residue of the aluminum liquid on the filter screen 2, and prevent the residue of the aluminum liquid on the filter screen 2 from forming solid due to cooling, which affects the function of the filter screen 2. The aluminum liquid filter screen 2 can remove the harmless impurities such as bubbles, inclusions, and various assimilates in the aluminum melt, greatly improve the product yield of the aluminum casting, and ensure the quality of the aluminum product. Through the filtration, the infiltration of other metal components into the aluminum solution can be prevented, so that the composition of the aluminum alloy is not affected, and the quality of the aluminum casting is ensured. In addition, the aluminum liquid filter screen 2 can also improve the mechanical properties of the aluminum casting, and improve the hardness and bending strength of the casting.

[0032] The inner wall of the bottom of the pouring cup 1 is provided with a plurality of limiting blocks 6, and the aluminum liquid filter screen 2 is installed between the limiting blocks 6 and the flange 7. When it is needed to install the aluminum liquid filter screen 2 between the pouring cup 1 and the flow guide pipe 3, the aluminum liquid filter screen 2 is placed below the limiting blocks 6 at the bottom of the pouring cup 1, and then the pouring cup 1 is connected with the flow guide pipe 2 through the flange 7, so that the aluminum liquid filter screen 2 is installed between the limiting blocks 6 and the flange 7, thereby realizing the installation of the aluminum liquid filter screen 2. When it is needed to clean the aluminum liquid filter screen 2, the aluminum liquid filter screen 2 can be taken out for cleaning by disassembling the flange 7, and the installation flexibility of the aluminum liquid filter screen 2 is improved.

[0033] The whole device adopts a semi-closed design concept, and is in a completely closed state in other processes except for contacting air when the aluminum liquid is poured.

[0034] The working principle of the utility model is:

[0035] Before use, the device is baked to a temperature range of 300-400 DEG C, and is baked for 20-30 minutes in the temperature range, so that the moisture in the device is evaporated.

[0036] When the device is used for turning aluminum, the end of the flow guide pipe 3 extends into the aluminum liquid pool 4, and the aluminum liquid enters from the pouring cup 1 and enters the aluminum liquid pool 4 from the end of the flow guide pipe 3.

[0037] When the device is used for turning aluminum, the aluminum liquid capacity in the pouring cup 1 accounts for 60%-90% of the maximum capacity of the pouring cup 1.

[0038] The above is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can be made, which will not affect the effect and practicality of the utility model.

Claims

1. An aluminum transfer device for reducing air intake, characterized in that, It includes a pouring cup (1) and a guide pipe (3). The pouring cup (1) and the guide pipe (3) are detachably connected. The pouring cup (1) is funnel-shaped. The vertical cross-section of the pouring cup (1) has a gradually changing wall thickness, which is smaller at the top and larger at the bottom. The guide pipe (3) is arranged at an angle. The end of the guide pipe (3) is located in the aluminum liquid pool (4). The inner walls of the pouring cup (1) and the guide pipe (3) are provided with a heat-insulating coating layer. An aluminum liquid filter screen (2) can be detachably installed at the connection between the pouring cup (1) and the guide pipe (3).

2. The aluminum transfer device for reducing air intake according to claim 1, characterized in that, The aluminum molten metal filter screen (2) has protrusions (5) at the intersections of the mesh openings.

3. The aluminum transfer device for reducing intake volume according to claim 1, characterized in that, The inclination angle of the guide tube (3) is 30°-60°.

4. The aluminum transfer device for reducing air intake according to claim 1, characterized in that, The guide pipe (3) is a steel pipe, and the pouring cup (1) is made of cast iron.

5. The aluminum transfer device for reducing air intake according to claim 1, characterized in that, The thickness of the inner wall of the guide tube (3) is 8-16mm.

6. The aluminum transfer device for reducing intake volume according to claim 1, characterized in that, The pouring cup (1) is connected to the guide pipe (3) via a flange (7).

7. The aluminum transfer device for reducing air intake according to claim 6, characterized in that, The bottom inner wall of the pouring cup (1) is provided with multiple limiting blocks (6), and the aluminum water filter screen (2) is installed between the limiting blocks (6) and the flange (7).

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