A nodulizer press

Abstract

The utility model provides a kind of spherulitic agent magnesium press, belong to spherulitic agent production technical field, including furnace body, press into mechanism, furnace stand and hoisting frame.The furnace body includes hearth and furnace cover, the furnace cover bottom is equipped with press-in block, lifting sling is connected on the press-in block, extrusion area is formed in the side wall of press-in block.The utility model passes through lifting press-in block, press-in block carries magnesium block to melt into the surface of molten liquid alloy inside hearth by gravity, with the descent of press-in block, the extrusion area formed in the side of press-in block extrudes the surface of liquid alloy, and extrusion area gradually increases, increase the surface pressure of molten liquid alloy, to increase magnesium boiling temperature, increase the absorption of molten liquid alloy to gasified magnesium, reduce burning loss.

Description

Technical Field

[0001] This utility model belongs to the field of spheroidizing agent production technology, specifically referring to a spheroidizing agent magnesium pressing machine. Background Technology

[0002] A spheroidizing agent is an additive used in the foundry industry to treat molten iron, causing graphite to precipitate in spherical shapes during the solidification of cast iron. Cast iron treated in this way is called ductile iron. In the production of spheroidizing agents, other metals serving as the base material are usually melted into a liquid state in a melting furnace to form a high-temperature molten alloy. Then, metallic magnesium is added, and magnesium blocks are pressed into the molten alloy to add magnesium.

[0003] Existing spheroidizing agent pressing machines for magnesium use a metal bell jar with a long handle and an open bottom. A magnesium block is pressed into the molten alloy, and the bell jar is mechanically suspended and vertically pressed below the surface of the molten base alloy. The immense static pressure of the molten metal and the enclosed environment of the bell jar suppress the boiling and combustion of magnesium. Under high temperature and air-isolated conditions, the magnesium slowly dissolves and diffuses into the molten base alloy, thus forming a homogeneous spheroidizing agent alloy. However, the surface pressure of the molten alloy is provided solely by the magnesium block, resulting in a fixed magnesium boiling temperature and significant burn-off. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a spheroidizing agent magnesium pressing machine to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: A spheroidizing agent magnesium pressing machine is proposed, including a furnace body, including a furnace chamber and a furnace cover, wherein the furnace cover is movable above the furnace chamber; a pressing mechanism includes a pressing block disposed at the bottom of the furnace cover, wherein the side of the pressing block forms a pressing area that slopes downwards, and a lifting sling is disposed at the top of the pressing block; wherein the pressing mechanism is configured such that the lifting sling suspends and lowers the pressing block, and during the descent of the magnesium block, the pressing block presses the liquid surface of the molten alloy in the furnace chamber, and the pressing area gradually increases the area of ​​pressing the liquid surface of the molten alloy as the pressing block descends.

[0006] Furthermore, a connecting hole is provided at the center of the top of the furnace cover, and the lifting cable passes through the furnace cover through the connecting hole.

[0007] Furthermore, the furnace body also includes a furnace frame, the furnace chamber is embedded in the furnace frame, a hoisting frame is provided on the outside of the furnace frame, a winch is provided at the top inside the hoisting frame, a traction guide wheel is provided at the top inside the hoisting frame above the furnace body, and the other end of the lifting cable connected to the pressing block is wound around the traction guide wheel and then connected to the winch.

[0008] Furthermore, guide slide rods are fixedly connected to both sides of the furnace cover, and slide rails adapted to the guide slide rods are provided on both sides inside the hoisting frame.

[0009] Furthermore, after the pressing block rises to contact the furnace cover, the furnace cover rises together with the pressing block; the pressing block descends to leave contact with the furnace cover, and the pressing block clamps the magnesium block as it descends. Beneficial effects

[0010] The pressing block is raised and lowered by lifting slings. As the pressing block carries the magnesium block downwards into the molten liquid alloy inside the furnace, the pressing block forms a squeezing area on its side, which squeezes the surface of the liquid alloy. The squeezing area gradually increases, increasing the surface pressure of the molten liquid alloy, thereby increasing the magnesium boiling temperature, increasing the absorption of vaporized magnesium by the molten liquid alloy, and reducing burn-off. Attached Figure Description

[0011] Figure 1 A three-dimensional schematic diagram of the spheroidizing agent magnesium pressing machine proposed in this utility model. Figure 1 ; Figure 2 A three-dimensional schematic diagram of the spheroidizing agent magnesium pressing machine proposed in this utility model. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the lifting state of the spheroidizing agent magnesium pressing machine proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the spheroidizing agent magnesium pressing machine proposed in this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the internal structure of the spheroidizing agent magnesium pressing machine proposed in this utility model. Figure 2 .

[0012] Among them, 1. Furnace body; 101. Furnace chamber; 102. Furnace cover; 2. Pressing mechanism; 201. Pressing block; 202. Lifting sling; 203. Connecting hole; 3. Extrusion area; 4. Furnace frame; 5. Lifting frame; 6. Winch; 7. Guide wheel; 8. Guide slide bar; 9. Slide rail.

[0013] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0015] As mentioned earlier, existing spheroidizing agent pressing magnesium presses use a metal bell jar with a long handle and an open bottom to press a magnesium block into molten liquid alloy. The bell jar is then lifted by a mechanical device and vertically pressed below the surface of the molten base alloy. The immense static pressure of the molten metal and the enclosed environment of the bell jar suppress the boiling and combustion of magnesium. Under high temperature and air-isolated conditions, the magnesium slowly dissolves and diffuses into the liquid base alloy, thus forming a uniform spheroidizing agent alloy. However, the surface pressure of the molten liquid alloy is provided solely by the magnesium block, resulting in a fixed magnesium boiling temperature and significant burn-off.

[0016] To address this, the present invention provides a spheroidizing agent magnesium pressing machine, which allows the pressing block 201 to be raised and lowered via a lifting sling 202. As the pressing block 201 carries the magnesium block downwards into the molten liquid alloy surface inside the furnace 101 under gravity, the extrusion area 3 formed on the side of the pressing block 201 extrudes the surface of the liquid alloy, and the extrusion area gradually increases, increasing the surface pressure of the molten liquid alloy, thereby increasing the magnesium boiling temperature, increasing the absorption of vaporized magnesium by the molten liquid alloy, and reducing burn-off.

[0017] like Figures 1-5 As shown, this utility model embodiment provides a magnesium pressing machine, particularly a spheroidizing agent magnesium pressing machine, including a furnace body 1, a pressing mechanism 2, a furnace frame 4, and a lifting frame 5. The furnace body 1 is installed inside the furnace frame 4, and the furnace body 1 includes at least a medium-frequency furnace. The lifting frame 5 is installed outside the furnace frame 4, covering it internally. A winch 6 for winding is installed at the top of the inner part of the lifting frame 5. A guide wheel 7 is installed at the top of the inner part of the lifting frame 5, directly above the furnace body 1. A lifting cable 202 is connected to the winch 6, with one end wrapped around the guide wheel 7 and the other end hanging down directly above the furnace body 1. The furnace body 1 includes a furnace chamber 101 and a furnace cover 102. The furnace cover 102 covers the furnace chamber 101, protecting the interior of the furnace chamber 101 and preventing molten alloy from splashing out during the pressing of magnesium blocks.

[0018] The lifting cable 202, connected to the other end of the winch 6, passes through the center of the furnace cover 102. A connecting hole 203 is opened at the center of the surface of the furnace cover 102, and the lifting cable 202 extends through the interior of the connecting hole 203 to the bottom of the interior of the furnace cover 102. The pressing mechanism 2 includes a pressing block 201 connected to the other end of the lifting cable 202 and the winch 6. The bottom end of the pressing block 201 is used to place the magnesium block. The side of the pressing block 201 is a downward sloping surface. During the process of the pressing block 201 lifting the magnesium block and pressing it below the surface of the molten alloy, the pressing block 201 gradually increases the contact area with the surface of the molten alloy through the extrusion area 3 formed on the side. The pressing block 201 and the clamp at its bottom end for holding the magnesium block are made of high-temperature resistant materials, generally including high-temperature resistant ceramics and high-temperature resistant alloys.

[0019] Guide slides 8 are installed on both sides of the furnace cover 102 via long rods. Slide rails 9, used in conjunction with the guide slides 8, are installed on the side of the support columns on both sides of the lifting frame 5 where they are close to each other. When the pressing block 201 rises to contact the furnace cover 102, the furnace cover 102 rises together with the pressing block 201. When the pressing block 201 descends to leave contact with the furnace cover 102, it lowers separately, clamping the magnesium block and pressing it into the surface of the molten alloy. A rigid, high-temperature resistant rod can be used to connect the lifting cable 202 and the pressing block 201 to prevent swaying during the continued descent of the pressing block 201.

[0020] The hoist 6 winds up the lifting cable 202 to lift the pressing block 201 and the furnace cover 102 together. After the magnesium block is installed at the bottom of the pressing block 201, the hoist 6 lowers the furnace cover 102 and the pressing block 201 together via the lifting cable 202. After the furnace cover 102 is closed and covers the furnace chamber 101, the lifting cable 202 continues to lower the pressing block 201. The magnesium block is first immersed in the liquid surface of the molten alloy. The extrusion area 3 on the side of the pressing block 201 extrudes the surface of the molten alloy. The extrusion area gradually increases, increasing the surface pressure of the molten alloy to increase the magnesium boiling temperature, increase the absorption of the vaporized magnesium by the molten alloy, and reduce burn-off.

[0021] In summary, this utility model uses a lifting cable 202 to lift and lower the pressing block 201. As the pressing block 201 carries the magnesium block downwards into the molten liquid alloy surface inside the furnace 101 by gravity, the extrusion area 3 formed on the side of the pressing block 201 extrudes the surface of the liquid alloy and the extrusion area gradually increases, thereby increasing the surface pressure of the molten liquid alloy, increasing the magnesium boiling temperature, increasing the absorption of vaporized magnesium by the molten liquid alloy, and reducing burn-off.

[0022] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A spheroidizing agent magnesium pressing machine, characterized in that, include: The furnace body (1) includes a furnace chamber (101) and a furnace cover (102), wherein the furnace cover (102) is movable above the furnace chamber (101); The pressing mechanism (2) includes a pressing block (201) disposed at the bottom of the furnace cover (102), the side of the pressing block (201) having a pressing area (3) that slopes downwards, and the top of the pressing block (201) being provided with a lifting cable (202). The pressing mechanism (2) is configured to lift and lower the pressing block (201) using a lifting sling (202). During the descent of the magnesium block, the pressing block (201) presses the liquid surface of the molten alloy in the furnace (101), and the pressing area (3) gradually increases the area of ​​the liquid surface of the molten alloy as the pressing block (201) descends.

2. The spheroidizing agent magnesium pressing machine according to claim 1, characterized in that, The furnace cover (102) has a connecting hole (203) at the center of its top, and the lifting cable (202) passes through the furnace cover (102) through the connecting hole (203).

3. The spheroidizing agent magnesium pressing machine according to claim 2, characterized in that, The furnace body (1) also includes a furnace frame (4), the furnace chamber (101) is embedded in the furnace frame (4), a hoisting frame (5) is provided on the outside of the furnace frame (4), a winch (6) is provided at the top inside the hoisting frame (5), a traction guide wheel (7) is provided at the top inside the hoisting frame (5) above the furnace body (1), and the other end of the lifting cable (202) is connected to the pressing block (201) and wound around the traction guide wheel (7) and then connected to the winch (6).

4. The spheroidizing agent magnesium pressing machine according to claim 3, characterized in that, The furnace cover (102) is fixedly connected to guide slide rods (8) on both sides, and the hoisting frame (5) is provided with slide rails (9) that are compatible with the guide slide rods (8) on both sides.

5. The spheroidizing agent magnesium pressing machine according to claim 2, characterized in that, After the pressing block (201) rises to contact the furnace cover (102), the furnace cover (102) rises together with the pressing block (201); the pressing block (201) descends to leave contact with the furnace cover (102), and the pressing block (201) clamps the magnesium block and descends alone.

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