Novel pulling-straightening roller of small square billet continuous casting machine

Abstract

The utility model relates to the technical field of continuous casting small square billet machining, in particular to a novel pulling-straightening roller of a small square billet continuous casting machine, which comprises an arc table, the arc surface of the arc table is an arc-shaped surface with a convex middle and two concave sides, the arc table is bilaterally symmetrical, two ends of the arc table are provided with bosses, and the bosses at the two ends are higher than the convex middle. The contact surface of the pulling-straightening roller and a casting blank can be reduced, the deformation resistance is increased, the rolling reduction of the casting blank is increased under the same pressure, and compared with a flat roller, the rolling reduction can be increased under the same pressure, so that the problems of center segregation and looseness of a high-carbon steel small square blank in the continuous casting process are effectively solved; and the probability that net carbon appears on rolled metal and the fracture frequency in the deep drawing process are reduced, the structure is simple and reasonable, and compared with an existing technology under heavy pressure, the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting small square billet processing, in particular to a new type of straightening roller for a small square billet continuous casting machine. Background Art

[0002] During the production of high carbon steel, defects such as center segregation and looseness will occur in the continuous casting billet. In severe cases, center segregation will cause serious carbon content in the rolled material, resulting in cup-cone fracture, and severe looseness will cause abnormal fracture of the rolled material. The common straightening roll is a flat roll. In order to ensure that the center segregation and looseness of the cast billet are controlled within a reasonable range, the existing method is to adopt heavy pressure technology, but heavy pressure technology has large investment and high cost. Utility Model Content

[0003] In order to solve the problems mentioned in the above background technology, the utility model provides a novel straightening roller for a small square billet continuous casting machine. The straightening roller is provided with an arc table, which can increase the pressing depth of the billet and improve the problems of center segregation and looseness.

[0004] The utility model discloses the following technical scheme: a novel straightening roller for a small square billet continuous casting machine, comprising an arc table, the arc surface of the arc table is an arc surface with concave arc surfaces on both sides of a middle protrusion, the arc table is left-right symmetrical and has bosses at both ends, and the bosses at both ends are higher than the middle protrusion.

[0005] Furthermore, the radius R1 of the middle convex and concave arc surface of the arc table is 128 mm, and the height difference H1 between the middle convex and concave arc surface tops is 10 mm.

[0006] Furthermore, the arc surface width L of the arc table is 179mm, the height difference H2 between the top of the bosses on both sides of the arc table and the bottom of the arc surface is 30mm, the connection between the bosses on both sides of the arc table and the arc surface is a slope, the angle a between the slope and the radial direction of the arc table is 16°, and the fillet R2 between the slope and the concave arc is 16mm.

[0007] Beneficial effects: Compared with the prior art, the new straightening roller of the small square billet continuous casting machine of the utility model can increase the pressing depth of the billet by setting an arc table, which can effectively improve the problems of center segregation and looseness of the continuous casting billet, etc., has a simple structure, is easy to implement, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the front and cross-section view of a new type of straightening roller of a small square billet continuous casting machine of the utility model;

[0009] In the figure: 1-arc platform, 2-convex platform. DETAILED DESCRIPTION

[0010] like Figure 1As shown, a new type of straightening roller for a small square billet continuous casting machine includes an arc table 1, the arc surface of the arc table 1 is an arc surface with concave arc surfaces on both sides of a middle protrusion, the arc table 1 is symmetrical on the left and right, and bosses 2 are provided at both ends, and the bosses 2 at both ends are higher than the middle protrusion.

[0011] The radius R1 of the middle convex and concave arc surface of the arc table 1 is 128mm, and the height difference H1 between the top of the middle convex and concave arc surface is 10mm, which can reduce the contact area between the straightening roller and the cast billet. Compared with the flat roller, it has a higher pressing amount under the same pressure, and the depth reaches 6-9mm; the arc surface width L of the arc table 1 is 179mm, and the height difference H2 between the top of the boss 2 on both sides of the arc table 1 and the bottom of the arc surface is 30mm. The connection between the boss 2 on both sides of the arc table 1 and the arc surface is an inclined surface, and the angle a between the inclined surface and the radial direction of the arc table 1 is 16°. The fillet R2 between the inclined surface and the concave arc is 16mm, which can ensure the size of the continuous casting small square billet.

[0012] The use of the straightening roller of the utility model can reduce the contact area between the straightening roller and the ingot, increase the deformation resistance, increase the pressing amount of the ingot under the same pressure, and the depth reaches 6-9mm, which can effectively improve the center segregation and looseness of the high-carbon steel ingot, reduce the probability of carbon mesh in the rolled material and the frequency of fracture in deep drawing, has a simple and reasonable structure, and saves costs. The following is a detection table of ingot parameters using the straightening roller.

[0013]

[0014] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel straightening roller for a billet continuous casting machine, comprising an arc table (1), characterized in that: The arc surface of the circular arc platform (1) is an arc surface with concave arc surfaces on both sides of a middle protrusion. The circular arc platform (1) is bilaterally symmetrical and has bosses (2) at both ends. The bosses (2) at both ends are higher than the middle protrusion.

2. The novel straightening roller for billet continuous casting machine according to claim 1 is characterized in that: The radius R1 of the middle convex and concave arc-shaped surfaces of the arc platform (1) is 128 mm, and the height difference H1 between the top of the middle convex and concave arc-shaped surfaces is 10 mm.

3. The novel straightening roller for billet continuous casting machine according to claim 1 is characterized in that: The arc surface width L of the arc platform (1) is 179 mm, the height difference H2 between the top of the bosses (2) on both sides of the arc platform (1) and the bottom of the arc surface is 30 mm, the connection between the bosses (2) on both sides of the arc platform (1) and the arc surface is an inclined surface, the angle a between the inclined surface and the arc platform (1) in the radial direction is 16°, and the fillet R2 between the inclined surface and the concave arc is 16 mm.

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