Nozzle structure for preparing iron-based amorphous broadband

Abstract

The utility model relates to the technical field of amorphous broadband preparation devices, in particular to a nozzle structure for preparing an iron-based amorphous broadband, which comprises a nozzle main body, an arc-shaped inner groove is arranged on the top end face of the nozzle main body, and a plurality of molten steel staggered flow stabilizing holes are arranged in the arc-shaped inner groove at equal intervals. A round-hole-shaped flow stabilizing groove is further formed in the nozzle body, the molten steel dislocation flow stabilizing holes are all communicated with the round-hole-shaped flow stabilizing groove, a nozzle seam is formed in the bottom end of the nozzle body, the nozzle seam is communicated with the round-hole-shaped flow stabilizing groove, and the nozzle seam and the round-hole-shaped flow stabilizing groove are arranged in an offset mode. The vortex molten steel can tend to be stable due to the fact that the molten steel flows downwards along the molten steel dislocation flow stabilizing holes, the problem that longitudinal vertical grains are formed on the cooling roller can be solved, and a flat and smooth wide-band material is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to amorphous wideband preparation device technical field, especially in kind of nozzle structure for iron-based amorphous wideband preparation. BACKGROUND

[0002] Amorphous wideband is the non-crystalline thin strip of 22-30 microns thickness prepared after the molten alloy steel liquid of about 1300 DEG C is extruded through the nozzle and is rapidly cooled by the copper roller rotating at 20-30 m / s linear speed. The molten alloy liquid is directly cast to the rapidly rotating copper roller through the nozzle of special structure and is rapidly cooled at the speed of 106 DEG C / s, and the steel liquid of 1300 DEG C is reduced to below 200 DEG C in only 10-3 second. In the production process, the molten steel liquid directly flows into the nozzle slit right below the round hole, and vortex will be generated in the air, which will cause the slight rotation of the steel liquid, and further cause the cooling chamber of the steel liquid on the cooling roller to be unable to be evenly spread, and further will cause the longitudinal vertical lines to be formed on the surface of the wideband material, and affect the surface quality of the wideband material. SUMMARY

[0003] The utility model aims at providing a kind of to solve the problem presented in the above background.

[0004] A kind of nozzle structure for iron-based amorphous wideband preparation, it is characterized by including a nozzle main body, a circular arc inner groove is set on the top end face of the nozzle main body, a plurality of steel liquid misplacement steady flow holes are equidistantly set in the circular arc inner groove, a round hole shape steady flow groove is also provided in the nozzle main body, the steel liquid misplacement steady flow hole is communicated with the round hole shape steady flow groove, a nozzle slit is set in the bottom end of the nozzle main body, and the nozzle slit is communicated with the round hole shape steady flow groove.

[0005] Preferably, a round hole shape heating groove is set in the nozzle main body, the axis of the round hole shape heating groove and the round hole shape steady flow groove is parallel to each other, the round hole shape heating groove is located at one side of the round hole shape steady flow groove, a protective gas slit is provided at the bottom end of the nozzle main body, the protective gas slit is communicated with the round hole shape heating groove, a gas gun hole is provided at one side of the nozzle main body, and the gas gun hole is communicated with the round hole shape heating groove.

[0006] Preferably, the protective gas slit is provided with a plurality of equidistantly set protective gas slits.

[0007] Preferably, the plane of the protective gas slit is parallel to the plane of the nozzle slit.

[0008] Preferably, the plane of the protective gas slit intersects with the plane of the nozzle slit.

[0009] Preferably, the bottom end surface of the circular-arc-shaped inner groove is a circular-arc surface with a middle high and two sides low, and the plurality of steel liquid misalignment flow holes are vertically arranged and communicated with the bottom end surface of the circular-arc-shaped inner groove.

[0010] Preferably, the plane where the nozzle slit is located is on one side of the plane where the plurality of steel liquid misalignment flow hole axes are located.

[0011] Preferably, the bottom end surface of the nozzle body is provided with anti-collision steps on both sides.

[0012] Compared with the prior art, the nozzle slit in the device is misaligned with the steel liquid misalignment flow hole, so that the steel liquid does not immediately enter the nozzle slit when flowing along the steel liquid misalignment flow hole, and the steel liquid generates vortex when flowing in the steel liquid misalignment flow hole, and the designed circular-hole-shaped flow groove can stabilize the vortex, and the nozzle slit is communicated with the circular-hole-shaped flow groove, and the plane where the nozzle slit is located is offset from the steel liquid misalignment flow hole, which can further avoid the influence of vortex, so that the steel liquid flowing out of the nozzle slit is more stable, and thus the steel liquid can form a more flat surface when contacting the cooling roller, thereby preventing vertical lines from being formed on the surface of the wide strip material, and a more flat and uniform wide strip material can be obtained.

[0013] The protective gas slit is provided with a plurality of slits, and the whole is discontinuously arranged, which can save gas consumption and production cost compared with the traditional long slit structure, and can heat the nozzle slit near the circular-hole-shaped heating groove by burning carbon monoxide, and the generated carbon dioxide can overflow from the protective gas slit to protect the steel liquid from oxidation, and the setting direction of the protective gas slit can be towards the nozzle slit direction, so that the gas released from the protective gas slit can contact the protective gas at the first time when the steel liquid flows out of the nozzle slit, thereby preventing the steel liquid from being oxidized.

[0014] The anti-collision steps are protruded from the bottom end surface of the nozzle body, which can prevent the nozzle from colliding with the cooling roller due to too close distance and causing the phenomenon of molten steel leakage. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of an embodiment of the utility model;

[0016] Figure 2 It is a second visual angle structure schematic view of an embodiment of the utility model;

[0017] Figure 3 It is a cross section schematic view of the utility model through the plane where the steel liquid misalignment flow hole axis is located in an embodiment of the utility model;

[0018] Figure 4The utility model discloses a cross-section schematic view of the nozzle seam in an embodiment of the utility model,

[0019] Figure 5 The utility model discloses a cross-section schematic view of the air gun hole in an embodiment of the utility model.

[0020] In the drawing: 1, nozzle main body, 2, circular arc inner groove, 3, liquid steel misplacement steady flow hole, 4, round hole shape steady flow groove, 5, nozzle seam, 6, air gun hole, 7, round hole shape heating groove, 8, protective gas seam, 9, anti-collision step. DETAILED DESCRIPTION

[0021] The utility model discloses a cross-section schematic view of the nozzle seam in an embodiment of the utility model, Figures 1-5 The utility model discloses a cross-section schematic view of the nozzle seam in an embodiment of the utility model,

[0022] A nozzle structure for preparing iron-based amorphous wideband comprises a nozzle main body 1, a circular arc inner groove 2 is formed on the top end face of the nozzle main body 1, the bottom end face of the circular arc inner groove 2 is a circular arc surface with high middle and low sides, the arc structure adjusts the thickness of the lower end section, balances the flow of liquid steel, and makes the liquid steel flow at the same speed along the liquid steel misplacement steady flow hole below.

[0023] A plurality of liquid steel misplacement steady flow holes 3 are equidistantly formed in the circular arc inner groove 2, the liquid steel misplacement steady flow holes 3 are vertically arranged, and the liquid steel misplacement steady flow holes 3 are all communicated with the bottom end face of the circular arc inner groove 2, due to the circular arc shape of the bottom end face of the circular arc inner groove 2, the middle hole is deep, and the side holes are shallow, the synchronous flow of liquid steel is realized, a round hole shape steady flow groove 4 is further arranged in the nozzle main body 1, the lower part of the liquid steel misplacement steady flow hole 3 is communicated with the round hole shape steady flow groove 4, the round hole shape steady flow groove 4 is located on one side below the liquid steel misplacement steady flow hole 3, so that the liquid steel needs to flow horizontally again after flowing down along the liquid steel misplacement steady flow hole 3, the vortex caused by flowing down along the hole is slowed down, the stable flow of liquid steel is promoted, a nozzle seam 5 is formed in the bottom end of the nozzle main body 1, the nozzle seam 5 is communicated with the round hole shape steady flow groove 4, the nozzle seam 5 is vertically arranged, the plane of the nozzle seam 5 is located on one side of the plane of the axes of the liquid steel misplacement steady flow holes 3, the round hole shape steady flow groove 4 and the offset nozzle seam 5 can both slow down the vortex of liquid steel, help the liquid steel to flow down along the nozzle seam 5 stably, and help the liquid steel to form a smooth and flat plane on the cooling roller, which is beneficial to improving the quality of products.

[0024] The nozzle body 1 is further provided with a circular hole heating groove 7, the circular hole heating groove 7 and the circular hole flow stabilizing groove 4 are both located inside the nozzle body 1, the two ends of the two are not communicated with the outside, the axis of the circular hole heating groove 7 and the circular hole flow stabilizing groove 4 are parallel to each other, and the circular hole heating groove 7 is located on one side of the circular hole flow stabilizing groove 4, so that the temperature in the circular hole heating groove 7 can quickly spread to the circular hole flow stabilizing groove 4, or even the whole nozzle body 1, the temperature of the nozzle body 1 can be quickly increased, thereby preventing the temperature of the molten steel flowing through the nozzle from being reduced, and causing the nozzle gap 5 to appear slag. The bottom end of the nozzle body 1 is provided with a protective gas gap 8, the protective gas gap 8 is communicated with the circular hole heating groove 7, one side of the nozzle body 1 is provided with a gas gun hole 6, the gas gun hole 6 is communicated with the circular hole heating groove 7, carbon monoxide can be introduced into the circular hole heating groove 7 through the gas gun hole 6, and then the carbon monoxide gas is combusted in the circular hole heating groove 7, so that the whole nozzle body 1 can be heated, and the gas gun hole 6 is a one-way air inlet, after the combustible gas is combusted, carbon dioxide is generated, and the carbon dioxide will overflow from the protective gas gap 8, the protective gas gap 8 is provided with a plurality of protective gas gaps, which are equidistantly arranged along a straight line, the structure of the nozzle body 1 is not separated, the overall structure of the nozzle structure is unobstructed, the opening area of the protective gas gap 8 is reduced, the amount of carbon monoxide is reduced, and the use cost is reduced.

[0025] In a preferred case, the plane where the protective gas gap 8 is located is parallel to the plane where the nozzle gap 5 is located, and the exhaust can be normally discharged.

[0026] In another preferred case, the plane where the protective gas gap 8 is located intersects the plane where the nozzle gap 5 is located, that is, the opening direction of the protective gas gap 8 is towards the direction of the molten steel flowing out, which is more conducive to the carbon dioxide overflowing from the protective gas gap 8 to contact the molten steel, thereby protecting the molten steel from oxidation, and improving the anti-oxidation degree of the molten steel.

[0027] Both sides of the bottom end face of the nozzle body 1 are provided with anti-collision steps 9, the anti-collision steps 9 protrude from the bottom end face of the nozzle body 1, and the anti-collision steps 9 can prevent the nozzle from colliding with the cooling roller due to too close distance, thereby preventing the phenomenon of molten steel leakage.

[0028] In addition to the technical features described in the specification, they are known to those skilled in the art.

[0029] In the utility model, "upper", "lower", "left", "right", "front", "rear" are all relative positions for the convenience of describing the positional relationship, and therefore cannot be understood as absolute positions for the limitation of the protection scope.

[0030] The above is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the present claims, which shall belong to the protection scope of the utility model.

Claims

1. A nozzle structure for preparing iron-based amorphous broadband, characterized in that, The nozzle body includes a nozzle body with an arc-shaped inner groove on its top surface. The arc-shaped inner groove has a plurality of steel liquid misaligned flow stabilizing holes evenly spaced inside. The nozzle body also has a circular flow stabilizing groove. The steel liquid misaligned flow stabilizing holes are all connected to the circular flow stabilizing groove. The bottom end of the nozzle body has a nozzle slit connected to the circular flow stabilizing groove.

2. The nozzle structure for preparing iron-based amorphous wide bands according to claim 1, characterized in that, A circular heating groove is formed inside the nozzle body. The axis of the circular heating groove is parallel to that of the circular flow stabilizing groove. The circular heating groove is located on one side of the circular flow stabilizing groove. A protective air slit is provided at the bottom of the nozzle body. The protective air slit is connected to the circular heating groove. An air gun hole is provided on one side of the nozzle body. The air gun hole is connected to the circular heating groove.

3. The nozzle structure for preparing iron-based amorphous wide bands according to claim 2, characterized in that, The protective air gaps are provided in multiple ways, and the multiple protective air gaps are opened at equal intervals.

4. The nozzle structure for preparing iron-based amorphous wide bands according to claim 3, characterized in that, The plane containing the protective air slit is parallel to the plane containing the nozzle slit.

5. The nozzle structure for preparing iron-based amorphous broadband according to claim 3, characterized in that, The plane containing the protective air slit intersects with the plane containing the nozzle slit.

6. The nozzle structure for preparing iron-based amorphous wide bands according to claim 1, characterized in that, The bottom surface of the arc-shaped inner groove is an arc surface that is high in the middle and low on both sides. Several steel liquid misalignment and flow stabilization holes are vertically arranged, and all of the steel liquid misalignment and flow stabilization holes are connected to the bottom surface of the arc-shaped inner groove.

7. The nozzle structure for preparing iron-based amorphous wide bands according to claim 1, characterized in that, The plane where the nozzle slit is located is on one side of the plane where the axes of several molten steel misalignment and flow stabilization holes are located.

8. The nozzle structure for preparing iron-based amorphous wide bands according to claim 1, characterized in that, Both sides of the bottom surface of the nozzle body are provided with anti-collision steps.

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