Molten steel wire feeding device and method based on core wire bundling and spiral blade linkage

Abstract

The invention is suitable for the technical field of metallurgy, and provides a molten steel wire feeding device and method based on core wire bundling and spiral blade linkage, the device comprises a core wire coil, a wire feeding machine, a bundling machine, a one-way buckle, a spiral blade pusher, a spiral blade set and a spiral harness cord pipe; one end of the core coil penetrates through the wire feeding machine, the wire feeding machine is used for conveying the core coil into the spiral harness tube, and the binding machine is arranged between the wire feeding machine and the spiral harness tube; the spiral blade set comprises a plurality of spiral blades, all the spiral blades are installed on the spiral harness cord pipe, and the spiral blade pusher is installed on the spiral harness cord pipe. Through a linkage mechanism of bundling the helical blade and the core wire, the uniformity and component stability of the molten steel can be improved, uniform mixing of the molten steel can be realized without additional power equipment, the energy consumption and the production cost are reduced, and meanwhile, the complexity and the maintenance cost of the equipment are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a molten steel wire feeding device and method based on the linkage of core wire bundling and spiral blades. Background Art

[0002] Wire feeding technology is a widely used method in modern steel smelting process. It is mainly used to accurately feed alloying elements, modifiers or deoxidizers into the ladle through the core wire to adjust the chemical composition of the molten steel and improve the performance of the molten steel. Compared with the traditional feeding method, wire feeding technology has the advantages of convenient operation, accurate addition of ingredients, and high element recovery rate. However, the diffusion rate of the substances released by the melting of the core wire in the molten steel is slow, especially when the natural convection in the molten steel is limited, it is easy to form a concentrated area with excessive local components. In order to accelerate homogenization, mechanical stirring, gas stirring or electromagnetic stirring is usually used to mix the molten steel in the ladle to achieve the purpose of uniformity.

[0003] However, the above-mentioned existing methods all have disadvantages to varying degrees. For example, mechanical stirring devices usually work in high temperature and corrosive environments, are easily damaged and have high maintenance costs. At the same time, molten steel may splash out and temperature fluctuations may occur during the stirring process, affecting operational safety and molten steel quality. Gas stirring mainly uses inert gas (such as argon) to spray into the molten steel from the bottom of the ladle, and disturbs the molten steel through the rising flow of the gas, thereby achieving a mixing effect. However, the above-mentioned operation method must strictly control the flow rate and injection amount of the gas. Excessive airflow may cause temperature fluctuations in the molten steel or gas inclusions, affecting the quality of the final product. In addition, the efficiency of gas stirring is limited, and the homogenization effect is insufficient for large ladles or high-viscosity molten steel. Although electromagnetic stirring can achieve non-contact mixing of molten steel and is relatively safe, its equipment cost is high, energy consumption is large, and maintenance is difficult. In addition, the electromagnetic field has strict requirements on the thickness of the ladle and the conductivity of the molten steel, and has great limitations.

[0004] Therefore, although the technology for achieving uniformity of molten steel in existing ladles has achieved certain results, it still has problems such as high energy consumption, high risk, low efficiency, and high equipment complexity. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a molten steel wire feeding device and method based on the linkage of core wire bundling and spiral blades, aiming to solve the problems raised in the above-mentioned background technology.

[0006] The embodiment of the present invention is implemented as follows: a molten steel wire feeding device based on the linkage of core wire bundling and spiral blades, comprising a core coil, a wire feeder, a bundling machine, a one-way buckle, a spiral blade pusher, a spiral blade group and a spiral wire tube;

[0007] One end of the core coil passes through a wire feeder, and the wire feeder is used to transport the core coil to a spiral wire tube. The bundling machine is arranged between the wire feeder and the spiral wire tube, and is used to install the one-way buckle on the core coil;

[0008] The spiral blade group includes a plurality of spiral blades, and each of the spiral blades is installed on a spiral wire tube. The spiral blade pusher is installed at the spiral wire tube and is used to push the spiral blades on the spiral wire tube according to the wire feeding speed.

[0009] A further technical solution is that the wire feeding speed of the wire feeder is 5 to 20 m / min; the interval of the one-way buckles of the strapping machine is 0.4 m to 10 m; the speed at which the spiral blade pusher releases the spiral blade matches the interval of the one-way buckles of the strapping machine.

[0010] According to a further technical solution, the thickness of the one-way buckle is 5 mm to 10 mm.

[0011] A further technical solution is that the spiral blade group consists of 20 to 30 spiral blades, each spiral blade has 3 to 6 blades, the blade weight is 3kg to 15kg, the blade inclination angle is 30° to 60°, the blade thickness is 1mm to 10mm, the blade width is 100mm to 300mm, the blade curvature radius is 150mm to 400mm, the center hole diameter is 15mm to 55mm, and the inner wall of the center hole is threaded.

[0012] According to a further technical solution, the parameters of the thread are as follows: the thread is a trapezoidal thread, the pitch is 5mm to 30mm, the outer diameter of the thread is 12mm to 30mm, the inner diameter of the thread is 10mm to 25mm, the depth of the thread is 1.5mm to 8mm, the helix angle is 20° to 60°, and the fitting clearance is 0.1mm to 0.3mm.

[0013] Another object of the embodiment of the present invention is to provide a molten steel wire feeding method based on the linkage between core wire bundling and spiral blades, based on the above-mentioned molten steel self-uniform wire feeding device, comprising the following steps:

[0014] Step 1: Before the wire feeder starts working, set the wire feeding speed of the wire feeder, the bundling spacing of the bundling machine, and the pushing speed of the spiral blade pusher according to production requirements;

[0015] Step 2: When starting to feed the wire, the tying machine ties the core wire with the one-way buckle according to the set spacing. When the tied core wire enters the spiral wire tube, the spiral blade pusher pushes the spiral blade along the spiral wire tube at the same speed as the core wire. According to the previous round of operation, the spiral blade pusher performs reciprocating motion;

[0016] Step 3: When the spiral blade changes from translation to vertical downward movement, its internal thread engages with the external thread of the spiral wire tube, so that the spiral blade generates a downward speed and applies a set rotation speed; wherein, the descending speed of the spiral blade is always consistent with the speed of the core wire;

[0017] Step 4: When the spiral blade is separated from the spiral wire tube, it falls along the core line. At this time, the one-way buckle is separated from the spiral wire tube, and its tail opens, which is larger than the inner diameter of the central hole of the spiral blade, so that the spiral blade is fixed at the position of the one-way buckle on the core line;

[0018] Step 5: After the core wire and spiral blades enter the ladle, the core wire begins to melt, and the spiral blades continue to rotate and slowly melt in the molten steel. During the rotation process, the chemical composition of the melted core wire is evenly stirred to all parts of the ladle, completing the uniform mixing of the molten steel and the core wire in the ladle.

[0019] The embodiment of the present invention provides a molten steel wire feeding device and method based on the linkage of core wire bundling and spiral blades, and its beneficial effects are as follows:

[0020] (1) Through the linkage mechanism of the spiral blades and the core wire bundling, the spiral blades are used to dynamically mix the molten steel while the core wire is melting. Compared with traditional mechanical stirring, gas stirring or electromagnetic stirring, it can more effectively avoid the formation of local concentration areas in the molten steel, greatly improving the uniformity and composition stability of the molten steel.

[0021] (2) By making full use of the gravity driving force of the spiral blades and the structural design of the threaded guide tube, uniform mixing of the molten steel can be achieved without the need for additional power equipment. Compared with high-energy consumption methods such as electromagnetic stirring, this reduces energy consumption and production costs, while also reducing the complexity of the equipment and maintenance costs.

[0022] (3) The modular design of the spiral blades and threaded guide tubes makes the equipment easier to replace and maintain, reducing downtime during the smelting process. The thread length and blade parameters can be flexibly adjusted according to process requirements to meet the requirements of different smelting scales and steel grades.

[0023] (4) This method is not only suitable for the homogenization treatment of conventional molten steel, but can also be extended to the smelting process of special alloy steel, stainless steel and other high value-added steel grades, providing new technical support for the development of the steel industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a molten steel wire feeding device based on the linkage of core wire bundling and spiral blades provided in an embodiment of the present invention.

[0025] In the attached drawings: core coil 1; wire feeder 2; bundling machine 3; one-way buckle 4; spiral blade pusher 5; spiral blade 6; spiral wire tube 7. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1 As shown, a molten steel wire feeding device based on the linkage between core wire bundling and spiral blades provided by an embodiment of the present invention comprises a core coil 1, a wire feeder 2, a bundling machine 3, a one-way buckle 4, a spiral blade pusher 5, a spiral blade group and a spiral wire tube 7;

[0029] One end of the core coil 1 passes through the wire feeder 2, and the wire feeder 2 is used to transport the core coil 1 to the spiral wire tube 7. The bundling machine 3 is arranged between the wire feeder 2 and the spiral wire tube 7, and is used to install the one-way buckle 4 on the core coil 1;

[0030] The spiral blade group includes a plurality of spiral blades 6, and each of the spiral blades 6 is installed on a spiral wire tube 7. The spiral blade pusher 5 is installed at the spiral wire tube 7 to push the spiral blades 6 on the spiral wire tube 7 at a wire feeding speed.

[0031] As a preferred embodiment of the present invention, the wire feeding speed of the wire feeder 2 is 5 to 20 m / min; the interval of the one-way buckles 4 of the strapping machine 3 is 0.4 m to 10 m; the speed of the spiral blade pusher 5 releasing the spiral blade 6 matches the interval of the one-way buckles 4 of the strapping machine 3.

[0032] As a preferred embodiment of the present invention, the thickness of the one-way buckle 4 used in the strapping machine 3 is 5 mm to 10 mm.

[0033] As a preferred embodiment of the present invention, the spiral blade group is composed of 20 to 30 spiral blades 6. The number of blades of each spiral blade 6 is 3 to 6, and the blade material depends on the steelmaking substrate. The blade weight is 3kg to 15kg, the blade inclination angle is 30° to 60°, the blade thickness is 1mm to 10mm, the blade width is 100mm to 300mm, the blade curvature radius is 150mm to 400mm, the center hole diameter is 15mm to 55mm, and the inner wall of the center hole is threaded.

[0034] As a preferred embodiment of the present invention, the parameters of the thread are specifically: the thread is a trapezoidal thread, the pitch is 5mm~30mm, the outer diameter of the thread is 12mm~30mm, the inner diameter of the thread is 10mm~25mm, the thread depth is 1.5mm~8mm, the helix angle is 20°~60°, and the fitting clearance is 0.1mm~0.3mm.

[0035] As a preferred embodiment of the present invention, the initial velocity of the spiral blade 6 leaving the spiral wire tube 7 should be consistent with the wire feeding speed, that is, it should satisfy the following formula:

[0036]

[0037] Among them, v 叶片 v is the initial velocity of the spiral blade 6 leaving the spiral wire tube 7, mm / min; 芯线 is the wire feeding speed of the core wire, mm / min; p is the pitch, mm; n is the rotation speed of the spiral blade, r / min; g is the acceleration of gravity.

[0038] As a preferred embodiment of the present invention, the rotation of the spiral blade 6 is determined by the gravity driving force and the thread lead angle θ of the threaded guide tube, and its sliding acceleration satisfies the following formula:

[0039]

[0040] Among them, F 有效 =F 重力 sinθ-F f ; F 重力 =m·g; F f =μ·F 法向 ; F 法向 =F 重力 ·cosθ; μ is the friction coefficient.

[0041] As a preferred embodiment of the present invention, the spiral wire tube 7 is provided with a thread on the outer wall thereof that matches the spiral blade 6, wherein the length of the thread is determined by the following formula:

[0042] L 螺纹 =L 行程 +L 余量

[0043] L 余量 =0.1·L 行程

[0044] L 行程 =v 叶片 ·t

[0045]

[0046] Among them, L螺纹 L is the sum of the thread length and the residual length of the spiral wire tube 7, mm; 余量 L is the remaining length of the spiral wire tube 7, mm; 行程 is the thread length of the spiral wire tube 7, mm; t is the sliding time, which depends on the core wire movement speed and the cable tie binding interval, min.

[0047] Another embodiment of the present invention provides a molten steel wire feeding method based on the linkage between core wire bundling and spiral blades, based on the above-mentioned molten steel self-uniform wire feeding device, comprising the following steps:

[0048] Step 1: Before the wire feeder starts working, set the wire feeding speed of the wire feeder, the bundling spacing of the bundling machine, and the pushing speed of the spiral blade pusher according to production requirements;

[0049] Step 2: When starting to feed the wire, the bundling machine 3 bundles the core wire with the one-way buckle 4 according to the set spacing. When the bundled core wire enters the spiral wire tube 7, the spiral blade pusher 5 pushes the spiral blade 6 along the spiral wire tube 7 at the same speed as the core wire. According to the previous round of operation, the spiral blade pusher 5 performs reciprocating motion;

[0050] Step 3: When the spiral blade 6 changes from translation to vertical downward movement, its internal thread engages with the external thread of the spiral wire tube 7, so that the spiral blade 6 generates a downward speed and applies a set rotation speed; wherein the descending speed of the spiral blade is always consistent with the speed of the core wire;

[0051] Step 4: When the spiral blade 6 is separated from the spiral wire tube 7, it falls along the core line. At this time, the one-way buckle 4 is separated from the spiral wire tube 7, and its tail is opened, which is larger than the inner diameter of the central hole of the spiral blade 6, so that the spiral blade 6 is fixed at the position of the one-way buckle 4 on the core line;

[0052] Step 5: After the core wire and the spiral blade 6 enter the ladle, the core wire begins to melt. The spiral blade continues to rotate in the molten steel and slowly melts. During the rotation process, the chemical composition of the molten core wire is evenly stirred to all parts of the ladle, completing the uniform mixing of the molten steel and the core wire in the ladle.

[0053] Several specific examples are provided below to verify the effectiveness of this method:

[0054] Example 1: The parameters are set as follows: the core wire fed is calcium silicon wire; the core wire diameter is 16 mm; the wire feeding speed of the wire feeder is 5 m / min; the bundling spacing of the bundling machine is 0.8 m, and the one-way buckle thickness is 5 mm.

[0055] The spiral blade group consists of 20 spiral blades, and the design parameters of each spiral blade are as follows: blade material: X70 pipeline steel; blade mass: 5kg; number of blades: 3; blade inclination angle: 30°; blade thickness: 2mm; blade width: 100mm; blade curvature radius: 150mm; center hole diameter: 25mm. The inner wall of the center hole is threaded to match the spiral thread tube.

[0056] The thread parameters are set as follows: thread type: trapezoidal thread; pitch: 10mm; thread inner diameter: 25mm; thread depth: 2.5mm; thread outer diameter: 30mm; thread lead angle: 30°

[0057] The external thread of the spiral wire tube should match the thread of the spiral blade. The thread length depends on the sliding time and sliding margin of the spiral blade on the thread. In this embodiment, the sliding time is 0.5min and the sliding margin is 0.25m. The thread length calculated by the formula is 2.75m.

[0058] The rotation speed and sliding acceleration of the spiral blade are calculated according to the formula. The blade rotation speed is 500r / min and the sliding acceleration is 4.051m / s 2 .

[0059] The specific steps are as follows:

[0060] Step 1: Parameter setting: Before the wire feeder works, set the following parameters according to production requirements: the wire feeding speed of the wire feeder is 5m / min; the bundling spacing of the strapping machine is 0.8m; the pushing speed of the spiral blade pusher is consistent with the wire feeding speed, that is, 5m / min.

[0061] Step 2: After the wire feeding starts, the strapping machine bundles the calcium silicon core wire at a set spacing of 0.8m and ties a one-way buckle on the core wire. After the bundled core wire enters the spiral wire tube, the spiral blade pusher pushes the spiral blade at a speed of 5m / min, keeping pace with the movement speed of the core wire. After the spiral blade pusher completes one push, it will reciprocate according to the set program to prepare for the subsequent blade push.

[0062] Step 3: When the spiral blade changes from horizontal pushing to vertical downward sliding, the trapezoidal thread on the inner wall of its center hole precisely meshes with the external thread of the spiral thread tube. Through the action of the thread, the spiral blade is given an axial sliding speed v 滑 =5m / min and speed n = 500r / min. At this time, the sliding speed of the spiral blade is consistent with the wire feeding speed of the core wire.

[0063] Step 4: The bundled calcium-silicon core wire enters the ladle together with the fixed spiral blades. The core wire begins to melt in the molten steel, releasing calcium-silicon elements, completing the deoxidation and modification. At the same time, the spiral blades rotate in the molten steel due to the design of the thread lead angle, and slowly melt during the rotation process, dynamically stirring the chemical components released by the core wire. The rotating stirring effect of the spiral blades effectively improves the composition distribution of the molten steel, making the distribution of calcium-silicon elements in the ladle more uniform.

[0064] Step 5: As the core wire and the spiral blades are completely melted, the silicon and calcium elements in the ladle are fully mixed with the molten steel. The method of the present invention improves the uniformity of the molten steel and significantly reduces the local component segregation phenomenon through the self-rotating stirring action of the spiral blades.

[0065] The X70 pipeline steel obtained in this embodiment was compared with the X70 pipeline steel prepared by the conventional gas stirring method of mixing molten steel. At half of the thickness of the cross section of the alloy steel sample, samples were taken to measure the yield of easily oxidizable elements such as calcium, as well as the tensile strength and elongation of the steel parts. The measurement results are shown in Table 1.

[0066] Table 1: Performance test results in Example 1

[0067]

[0068] According to the performance test results in Table 1, this embodiment is significantly superior to the existing process in terms of Ca yield, tensile strength and elongation. In this embodiment, the Ca yield is 27%, which is 50% higher than the 18% of the existing process. This shows that the present method has a higher utilization efficiency of calcium during the deoxidation and modification process, effectively reducing resource waste. In addition, the tensile strength of the sample in this embodiment is 650MPa, which is about 4.8% higher than the 620MPa of the existing process. This shows that the X70 pipeline steel prepared by this method has more advantages in mechanical properties and is more suitable for use in scenarios with high strength requirements. Finally, with regard to elongation, the elongation of the sample in this embodiment is 18.2%, which is about 10.3% higher than the 16.5% of the existing process, reflecting better plasticity and helping to improve the processing and service life of the material. In summary, this embodiment not only improves the utilization rate of the Ca element, but also improves the comprehensive mechanical properties of the X70 pipeline steel through innovative spiral blade design and synchronous propulsion technology, providing a more efficient and economical preparation method for actual production.

[0069] Embodiment 2: The parameters are set as follows: the cored wire fed is magnesium cored wire; the core wire diameter is 16 mm; the wire feeding speed of the wire feeder is 12 m / min; the bundling spacing of the bundling machine is 1.5 m, and the one-way buckle thickness is 7 mm.

[0070] The spiral blade group consists of 25 spiral blades, and the design parameters of each spiral blade are as follows: blade material: low-carbon aluminum-killed steel; blade mass: 6kg; number of blades: 4; blade inclination angle: 40°; blade thickness: 4mm; blade width: 150mm; blade curvature radius: 220mm; center hole diameter: 30mm. The inner wall of the center hole is threaded to match the spiral wire tube.

[0071] The thread parameters are set as follows: thread type: trapezoidal thread; pitch: 15mm; thread inner diameter: 30mm; thread depth: 3mm; thread outer diameter: 36mm; thread lead angle: 35°

[0072] The external thread of the spiral thread tube should match the thread of the spiral blade. The thread length depends on the sliding time and sliding margin of the spiral blade on the thread. The sliding time is 0.5min and the sliding margin is 0.3m. The thread length calculated by the formula is 6.3m.

[0073] According to calculation, the blade speed of this embodiment is: 800r / min, and the sliding acceleration is 4.82m / s 2 .

[0074] The specific steps are as follows:

[0075] Step 1: Parameter setting: Before the wire feeder works, set the following parameters according to production requirements: the wire feeding speed of the wire feeder is 12m / min; the bundling spacing of the strapping machine is 1.5m; the pushing speed of the spiral blade pusher is consistent with the wire feeding speed, that is, 12m / min.

[0076] Step 2: After the wire feeding starts, the strapping machine bundles the calcium silicon core wire at a set spacing of 1.5m and ties a one-way buckle on the core wire. After the bundled core wire enters the spiral wire tube, the spiral blade pusher pushes the spiral blade at a speed of 12m / min, keeping pace with the movement speed of the core wire. After the spiral blade pusher completes one push, it will reciprocate according to the set program to prepare for the subsequent blade push.

[0077] Step 3: When the spiral blade changes from horizontal pushing to vertical downward sliding, the trapezoidal thread on the inner wall of its center hole precisely meshes with the external thread of the spiral thread tube. Through the action of the thread, the spiral blade is given an axial sliding speed v 滑 =12m / min and speed n = 800r / min. At this time, the sliding speed of the spiral blade is consistent with the wire feeding speed of the core wire.

[0078] Step 4: The bundled magnesium cored wire enters the ladle together with the fixed spiral blades. The magnesium cored wire begins to melt in the molten steel, releasing magnesium elements, completing the deoxidation and modification. At the same time, the spiral blades rotate in the molten steel due to the design of the thread lead angle, and slowly melt during the rotation process, dynamically stirring the chemical components released by the core wire. The rotating stirring action of the spiral blades effectively improves the composition distribution of the molten steel, making the silicon and calcium elements in the ladle more evenly distributed.

[0079] Step 5: With the complete melting of the core wire and spiral blades, the low-carbon aluminum-killed steel in the ladle achieves dynamic homogenization of composition. The continuous stirring action of the spiral blades effectively reduces the segregation of molten steel and significantly improves the quality and mechanical properties of the molten steel.

[0080] The low-carbon aluminum killed steel obtained in this embodiment was compared with the low-carbon aluminum killed steel prepared by the conventional gas stirring method of mixing molten steel. At half of the cross-section thickness direction of the low-carbon aluminum killed steel sample, samples were taken to measure the yield of easily oxidizable elements such as magnesium, as well as the tensile strength and elongation of the steel parts. The measurement results are shown in Table 2.

[0081] Table 2: Performance test results in Example 2

[0082]

[0083] In this embodiment, the Mg recovery rate reached 36%, which is an increase of 111.8% compared with 17% of the existing process. This shows that this method has higher efficiency in the melting and utilization of magnesium elements, and effectively reduces the oxidation loss of magnesium. In addition, the tensile strength of the sample prepared in this embodiment is 520MPa, which is 4% higher than the 500MPa of the existing process. This shows that the low-carbon aluminum-killed steel prepared by this method exhibits better mechanical properties in terms of strength and is suitable for industrial applications with higher strength requirements. Finally, the elongation of the sample prepared in this embodiment is 25.3%, which is about 11% higher than the 22.8% of the existing process. This shows that this method can effectively improve the plasticity and toughness of the material, and further enhance the adaptability of the material in processing and use. In summary, this embodiment significantly improves the utilization rate of magnesium elements through improved process flow and spiral blade design, optimizes the mechanical properties and composition uniformity of low-carbon aluminum-killed steel, and provides a more efficient and economical technical solution for the production of high-quality steel.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A molten steel wire feeding device based on the linkage between core wire bundling and spiral blades, characterized in that: It includes a core coil, a wire feeder, a tying machine, a one-way buckle, a spiral blade pusher, a spiral blade assembly and a spiral wire tube; One end of the core coil passes through a wire feeder, and the wire feeder is used to transport the core coil to a spiral wire tube. The bundling machine is arranged between the wire feeder and the spiral wire tube, and is used to install the one-way buckle on the core coil; The spiral blade group includes a plurality of spiral blades, and each of the spiral blades is installed on a spiral wire tube. The spiral blade pusher is installed at the spiral wire tube and is used to push the spiral blades on the spiral wire tube according to the wire feeding speed.

2. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to claim 1 is characterized in that: The wire feeding speed of the wire feeder is 5-20 m / min; the interval of the one-way buckles of the strapping machine is 0.4 m-10 m; the speed of the spiral blade pusher releasing the spiral blade matches the interval of the one-way buckles of the strapping machine.

3. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to claim 2 is characterized in that: The thickness of the one-way buckle is 5 mm to 10 mm.

4. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to claim 2 is characterized in that: The spiral blade group consists of 20 to 30 spiral blades, each spiral blade has 3 to 6 blades, a blade weight of 3kg to 15kg, a blade inclination angle of 30° to 60°, a blade thickness of 1mm to 10mm, a blade width of 100mm to 300mm, a blade curvature radius of 150mm to 400mm, a center hole diameter of 15mm to 55mm, and the inner wall of the center hole is threaded.

5. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to claim 4 is characterized in that: The parameters of the thread are specifically as follows: the thread is a trapezoidal thread, the pitch is 5mm to 30mm, the outer diameter of the thread is 12mm to 30mm, the inner diameter of the thread is 10mm to 25mm, the depth of the thread is 1.5mm to 8mm, the helix angle is 20° to 60°, and the fitting clearance is 0.1mm to 0.3mm.

6. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to any one of claim 5, characterized in that: The initial velocity of the spiral blade leaving the spiral wire tube should be consistent with the wire feeding speed, that is, it must satisfy the following formula: Among them, v 叶片 v is the initial velocity of the spiral blade leaving the spiral wire tube, mm / min; 芯线 is the wire feeding speed of the core wire, mm / min; p is the pitch, mm; n is the rotation speed of the spiral blade, r / min; g is the acceleration of gravity.

7. According to any one of claim 6, the molten steel wire feeding device based on the linkage between core wire bundling and spiral blades, the rotation of the spiral blades is determined by the gravity driving force and the thread lead angle of the threaded guide tube, and the sliding acceleration satisfies the following formula: in, F 有效 =F 重力 sinθ-F f ; F 重力 =m·g; F f =μ·F 法向 ; F 法向 =F 重力 ·cosθ; μ is the friction coefficient.

8. The molten steel wire feeding device based on the linkage between core wire bundling and spiral blades according to any one of claim 7, wherein the spiral wire tube has a thread on the outer wall that matches the spiral blades, wherein the thread length depends on the following formula: L 螺纹 =L 行程 +L 余量 L 余量 =0.1·L 行程 L 行程 =v 叶片 ·t in, L 螺纹 It is the sum of the thread length and the residual length of the spiral wire tube, mm; L 余量 L is the remaining length of the spiral wire tube, mm; 行程 is the thread length of the spiral wire tube, mm; t is the sliding time, which depends on the core wire movement speed and the cable tie binding interval, min.

9. A method for feeding molten steel wire based on the linkage between core wire bundling and spiral blades, based on the molten steel wire feeding device based on the linkage between core wire bundling and spiral blades as described in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Before the wire feeder starts working, set the wire feeding speed of the wire feeder, the bundling spacing of the bundling machine, and the pushing speed of the spiral blade pusher according to production requirements; Step 2: When starting to feed the wire, the tying machine ties the core wire with the one-way buckle according to the set spacing. When the tied core wire enters the spiral wire tube, the spiral blade pusher pushes the spiral blade along the spiral wire tube at the same speed as the core wire. According to the previous round of operation, the spiral blade pusher performs reciprocating motion; Step 3: When the spiral blade changes from translation to vertical downward movement, its internal thread engages with the external thread of the spiral wire tube, so that the spiral blade generates a downward speed and applies a set rotation speed; wherein, the descending speed of the spiral blade is always consistent with the speed of the core wire; Step 4: When the spiral blade is separated from the spiral wire tube, it falls along the core line. At this time, the one-way buckle is separated from the spiral wire tube, and its tail opens, which is larger than the inner diameter of the central hole of the spiral blade, so that the spiral blade is fixed at the position of the one-way buckle on the core line; Step 5: After the core wire and spiral blades enter the ladle, the core wire begins to melt, and the spiral blades continue to rotate and slowly melt in the molten steel. During the rotation process, the chemical composition of the melted core wire is evenly stirred to all parts of the ladle, completing the uniform mixing of the molten steel and the core wire in the ladle.

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