A calcium wire processing mold device with grooves and a method of using the same

Abstract

The present invention relates to a calcium wire processing die device with grooves and a method for using the same, the device includes a die body, the die body is formed by coaxial welding of an introduction section and multiple processing sections with the same pipe diameter and length, the introduction section is the entry end of the calcium wire, called the pass 1 die, the processing section welded with the pass 1 die is the pass 2 die, and the last section of the processing section is the pass n die; the introduction section is a hollow steel pipe with a smooth inner wall, the inner wall of the processing section is provided with multiple grooves, and a bump is installed on the groove, and the cross-sectional area of ​​the bump gradually increases from the pass 2 die to the pass n die; the outer wall of the die body is wound with a water-cooled copper tube induction coil and a cooling water pipe, and the two ends of the water-cooled copper tube induction coil are respectively connected to two wiring copper plates, and the two ends of the cooling water pipe are respectively connected in series with valves and quick connectors, and the wiring copper plates are connected to a power supply through electric wires. The present invention can produce calcium wires with special cross-section shapes to meet the requirements of subsequent calcium aluminum cored wires for calcium wires.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a calcium wire processing mold device with grooves and a use method thereof. Background Art

[0002] In the secondary refining process of molten steel, aluminum deoxidation and subsequent calcium wire feeding are common operations. Therefore, feeding calcium aluminum cored wire instead of simply feeding pure calcium wire can denature aluminum deoxidation products into low-melting calcium aluminates by feeding calcium wire into molten steel, which can effectively prevent aluminum deoxidation products from clogging the nozzle. The emergence of calcium aluminum cored wire combines aluminum deoxidation and calcium treatment. Once aluminum deoxidation products appear, they can react with calcium very quickly, significantly improving the effect of calcium treatment. In addition, by feeding calcium aluminum cored wire, the original aluminum deoxidation and subsequent calcium wire feeding operations are combined into one, which can greatly simplify the operation and speed up the production rhythm; not only simplifies the operation steps but also achieves better refining effects.

[0003] The calcium-aluminum cored wire is made by simply mechanically mixing calcium powder and aluminum powder and then directly wrapping it with a steel belt. Since no real alloy is formed and since it is a powder, the calcium powder melts very quickly after coming into contact with the molten steel, but the problem of slag splashing is obvious, and wire breakage during the feeding process is more serious.

[0004] Pure calcium wire as the inner core, aluminum layer as the outer layer, and steel strip as the outermost layer are widely used as a common structure, but the problems of splashing and calcium gasification during wire feeding still exist. The cross section of normal calcium wire is circular. After entering the molten steel, the reaction with the molten steel is from the outermost layer to the innermost layer, and the reaction lacks hierarchy. The contact between the calcium layer and the aluminum layer is not tight and is easy to separate from each other. There are also many problems in the production of calcium-aluminum cored wire.

[0005] Therefore, by designing the cross section of the calcium wire into a special shape and connecting it with the aluminum layer in a similar convex-concave matching form, the above problem will not occur. During the reaction process, the protruding part of the calcium wire will react with the molten steel first, followed by the main part of the calcium wire, and the aluminum layer and the calcium core are tightly connected, reducing the occurrence of separation between the calcium layer and the aluminum layer. Therefore, a mold device for processing irregular cross-section calcium wire is urgently needed. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a calcium wire processing mold device with a groove and a use method thereof, which can process calcium wires with different cross-sectional shapes.

[0007] A calcium wire processing mold device with grooves comprises a mold body, a water-cooled copper tube induction coil, a cooling water pipe, a quick connector, a valve, a wiring copper plate and an electric wire. The mold body is formed by coaxially welding an introduction section and a plurality of processing sections with the same pipe diameter and length, and is a complete hollow steel pipe after welding. The introduction section is the entry end of the calcium wire, which is called the pass 1 mold, the processing section welded with the pass 1 mold is the pass 2 mold, and the last section of the processing section is the pass n mold; the introduction section is a hollow steel pipe with a smooth inner wall, the inner wall of the processing section is provided with a plurality of grooves, and bumps are installed on the grooves, and the cross-sectional area of ​​the bumps gradually increases from the pass 2 mold to the pass n mold until the area of ​​the last pass bump meets the requirements of the finished calcium wire; the outer wall of the mold body is wound with a water-cooled copper tube induction coil and a cooling water pipe, the two ends of the water-cooled copper tube induction coil are respectively connected to two wiring copper plates, the two ends of the cooling water pipe are respectively connected in series with valves and quick connectors, and the wiring copper plate is connected to a power source through electric wires.

[0008] The water-cooled copper tube induction coil and the cooling water tube are wound in the same direction, and are evenly wound around the mold body in a clockwise direction.

[0009] The number of the wiring copper plates, quick connectors and valves is greater than or equal to two, and they are respectively installed at the two ends of the mold body, namely, the calcium wire entry end and the calcium wire exit end.

[0010] The number of the grooves is greater than or equal to 4.

[0011] The method for using the aforementioned calcium wire processing mold device with grooves specifically comprises the following steps:

[0012] Step 1: Installation: Install the mold device on the mold base of the calcium wire production line, connect the two ends of the induction coil wound on the mold body with the wiring copper plate, and connect the cooling water pipe in series with the quick connector and the valve in turn and wrap it around the outside of the mold body;

[0013] Step 2: Supply water and electricity: After checking that all parts of the mold device are normal, pass cooling water into the cooling water pipe and control the cooling water flow through the valve; turn on the power switch and the induction coil starts working;

[0014] Step 3: Calcium wire processing: The solid calcium wire is pulled and drawn and passes through the die body, first through the guide section with a smooth inner wall. When the guide section passes through, the induction coil will heat up the calcium wire. The heated calcium wire passes through multiple processing sections in sequence, that is, passes through the pass 2 die, the pass 3 die... the pass n die in sequence. Starting from the pass 2 die, the heated calcium wire is squeezed by the convex block, resulting in an inward concave deformation. As it passes through multiple processing sections, the inward concave of the calcium wire gradually increases due to the gradual increase in the cross-sectional area of ​​the convex block, until it passes through the pass n die and meets the final calcium wire shape and size requirements, completing the processing of the calcium wire with an irregular cross-sectional shape;

[0015] Step 4: Cut off water and power: After the calcium wire processing is completed, turn off the power supply and valve in turn, and finally completely turn off the cooling water through the quick connector.

[0016] The beneficial effects of the present invention are as follows: a calcium wire processing mold device with grooves and a method of using the same can produce calcium wires with special cross-section shapes to meet the requirements of subsequent calcium aluminum cored wires for calcium wires; the mold device is installed in the last process of a normal calcium wire production line. At this time, the calcium wire itself has residual heat. In the process of passing through the mold body, only a part of the heat is provided by the induction coil to process the solid calcium wire with a circular cross-section into a calcium wire with a special cross-section shape; the calcium wire processing mold is simple to install and operate, which is conducive to improving production efficiency, and the oxidation of calcium can be minimized during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a calcium wire processing mold device with grooves provided in an embodiment;

[0018] Figure 2 is a schematic cross-sectional view of the introduction section;

[0019] Figure 3 is a side view of the mold body;

[0020] Figure 4 A schematic diagram of a protrusion in a mold device provided in an embodiment;

[0021] in,

[0022] 1-electric wire, 2-connection copper plate, 3-cooling water pipe, 4-quick connector, 5-valve, 6-water-cooled copper tube induction coil, 7-mold body, 8-bump. DETAILED DESCRIPTION

[0023] In order to better explain the present invention and facilitate understanding, the technical solutions and effects of the present invention are described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, a calcium wire processing mold device with grooves includes a mold body 7, a water-cooled copper tube induction coil 6, a cooling water pipe 3, a quick connector 4, a valve 5, a wiring copper plate 2 and a wire 1. The mold body 7 is coaxially welded by an introduction section and multiple processing sections with the same pipe diameter and length. After welding, it is a complete hollow steel pipe. The introduction section is the entrance end of the calcium wire, which is called the pass 1 mold. The processing section welded with the pass 1 mold is the pass 2 mold, and the last processing section is the pass n mold. Figure 2As shown, the introduction section is a hollow steel pipe with a smooth inner wall, which plays the role of guiding the calcium wire into the interior of the mold body 7. The inner wall of the processing section is provided with a plurality of grooves, and a bump 8 is installed on the groove. The cross-sectional area of ​​the bump 8 gradually increases from the pass 2 mold to the pass n mold, until the area of ​​the last pass bump 8 meets the requirements of the finished calcium wire, that is, the number and size of the grooves on all processing sections are the same, the number of the installed bumps 8 is the same, but the cross-sectional area is different; Figure 3 As shown, the outer wall of the mold body 7 is wound with a water-cooled copper tube induction coil 6 and a cooling water pipe 3, the two ends of the water-cooled copper tube induction coil 6 are respectively connected to two wiring copper plates 2, the two ends of the cooling water pipe 3 are respectively connected in series with a valve 5 and a quick connector 4, and the wiring copper plate 2 is connected to a power source through an electric wire 1.

[0025] As a preferred technical solution, the water-cooled copper tube induction coil 6 and the cooling water tube 3 are wound in the same direction, and are both wound on the mold body 7 in a clockwise direction.

[0026] The number of the wiring copper plate 2, the quick connector 4 and the valve 5 is greater than or equal to two, and they are respectively installed at the two ends of the mold body 7, namely, the calcium wire entry end and the calcium wire exit end.

[0027] The number of the grooves is greater than or equal to 4, and in this embodiment, the number of the grooves is 8.

[0028] The mold device is used to produce calcium wires with special shapes of non-circular cross-sections, preferably, such as Figure 4 As shown, in this embodiment, the groove on the inner wall of the processing section is an inverted "T" shape, evenly distributed on the inner wall of the processing section, and is the same length as the processing section; the protrusion 8 is the same length as the processing section, and its cross section is "T"-shaped. The shape of the groove on the inner wall of the processing section is consistent with the bottom end of the vertical part of the protrusion 8, ensuring that the protrusion 8 is in close contact with the groove; the transverse part and the vertical part of the "T"-shaped protrusion 8 are respectively a rectangle and a trapezoid, the side length of the longer side of the rectangle is L3, and the side length of the shorter side is H2, the bottom side length of the trapezoid close to the "T"-shaped groove side of the processing section is L1, the side length close to the central axis side of the processing section is L2, the height of the trapezoid is H1, the bottom angle of the trapezoid is α, the size relationship between L1, L2 and L3 is L1>L3>L2, and the size relationship between H1 and H2 is H1>H2.

[0029] The method for using the above-mentioned calcium wire processing mold device with grooves specifically includes the following steps:

[0030] Step 1: Installation: Install the mold device on the mold base of the calcium wire production line, connect the two ends of the induction coil wound on the mold body 7 with the wiring copper plate 2, and connect the cooling water pipe 3 in series with the quick connector 4 and the valve 5 in sequence and wrap around the outside of the mold body 7;

[0031] Step 2: Supply water and electricity: After checking that all parts of the mold device are normal, supply cooling water to the cooling water pipe 3, and control the cooling water flow through the valve 5; turn on the power switch, and the induction coil starts to work;

[0032] Step 3: Calcium wire processing: The solid calcium wire is pulled and drawn and passes through the die body 7, first through the guide section with a smooth inner wall. When the guide section passes through, the induction coil will heat up the calcium wire. The heated calcium wire passes through multiple processing sections in sequence, that is, passes through the pass 2 die, the pass 3 die... the pass n die in sequence. Starting from the pass 2 die, the heated calcium wire is squeezed by the protrusion 8, resulting in an inward concave deformation. As it gradually passes through multiple processing sections, the inward concave of the calcium wire gradually increases due to the gradual increase in the cross-sectional area of ​​the protrusion 8. Until it passes through the pass n die and meets the final calcium wire shape and size requirements, the processing of the irregular cross-sectional shape of the calcium wire is completed. In this embodiment, the processed calcium wire has a "T"-shaped groove; during the calcium wire processing, the cooling water flow is controlled by the valve 5. At the initial stage of processing, the cooling water flow should be opened smaller to quickly heat up the die body 7. Then, the cooling water flow is increased to avoid excessive temperature.

[0033] Step 4: Cut off water and power: After the calcium wire processing is completed, turn off the power supply and valve 5 in turn, and finally completely turn off the cooling water through the quick connector 4.

[0034] It should be particularly noted that the mold device is used to produce calcium wires with special cross-section shapes. The cross-section is not limited to the shape of the groove with an inverted "T" shape, but can also be other shapes. The above embodiment is only a preferred technical solution so that the device of the present invention and its use method can be clearly explained. The mold device is used to produce calcium wires with special cross-section shapes. It is installed in the last process of a normal calcium wire production line to process a calcium wire with a circular cross-section into a calcium wire with a special cross-section shape. The calcium wire processing mold device is simple to install and operate, which is conducive to improving production efficiency, and the processing process can minimize calcium oxidation.

Claims

1. A calcium wire processing mold device with grooves, characterized in that: The invention comprises a mold body, a water-cooled copper tube induction coil, a cooling water pipe, a quick connector, a valve, a wiring copper plate and an electric wire. The mold body is formed by coaxially welding an introduction section and a plurality of processing sections with the same diameter and length. After welding, the mold body is a complete hollow steel pipe. The introduction section is the entry end of the calcium wire, which is called the pass 1 mold. The processing section welded with the pass 1 mold is the pass 2 mold. The last processing section is the pass n mold. The introduction section is a hollow steel pipe with a smooth inner wall. The inner wall of the processing section is provided with a plurality of grooves. The grooves are provided with bumps. The cross-sectional area of ​​the bumps increases from the pass 2 mold to the pass n mold. The gradient is large. During processing, the heated calcium wire passes through multiple processing sections in sequence, that is, passes through the pass 2 mold, the pass 3 mold... the pass n mold in sequence. Starting from the pass 2 mold, the heated calcium wire is squeezed by the convex block, resulting in an inward concave deformation, until the area of ​​the last pass convex block meets the required finished calcium wire requirements; the outer wall of the mold body is wrapped with a water-cooled copper tube induction coil and a cooling water pipe, and the two ends of the water-cooled copper tube induction coil are respectively connected to two wiring copper plates, and the two ends of the cooling water pipe are respectively connected in series with valves and quick connectors, and the wiring copper plate is connected to the power supply through wires; The water-cooled copper tube induction coil and the cooling water tube are wound in the same direction, and are evenly wound around the mold body in a clockwise direction; The number of the wiring copper plates, quick connectors and valves is greater than or equal to two, and they are respectively installed at the two ends of the mold body, namely, the calcium wire entry end and the calcium wire exit end; The number of the grooves is greater than or equal to 4.

2. The method for using the calcium wire processing mold device with grooves according to claim 1, characterized in that: The specific steps include: Step 1: Installation: Install the mold device on the mold base of the calcium wire production line, connect the two ends of the induction coil wound on the mold body with the wiring copper plate, and connect the cooling water pipe in series with the quick connector and the valve in turn and wrap it around the outside of the mold body; Step 2: Supply water and electricity: After checking that all parts of the mold device are normal, pass cooling water into the cooling water pipe and control the cooling water flow through the valve; turn on the power switch and the induction coil starts working; Step 3: Calcium wire processing: The solid calcium wire is pulled and drawn and passes through the die body, first through the guide section with a smooth inner wall. When the guide section passes through, the induction coil will heat up the calcium wire. The heated calcium wire passes through multiple processing sections in sequence, that is, passes through the pass 2 die, the pass 3 die... the pass n die in sequence. Starting from the pass 2 die, the heated calcium wire is squeezed by the convex block, resulting in an inward concave deformation. As it passes through multiple processing sections, the inward concave of the calcium wire gradually increases due to the gradual increase in the cross-sectional area of ​​the convex block, until it passes through the pass n die and meets the final calcium wire shape and size requirements, completing the processing of the calcium wire with an irregular cross-sectional shape; Step 4: Cut off water and power: After the calcium wire processing is completed, turn off the power supply and valve in turn, and finally completely turn off the cooling water through the quick connector.

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