CN201482941U - Crystallizer copper tube with corners covered with slow cooling strips - Google Patents

Abstract

The utility model discloses a crystallizer copper tube with angle parts cladded with slow-cooling strips, used for metallurgy continuous casting equipment. The crystallizer copper tube comprises a square billet crystallizer copper tube; four outer angle parts of the crystallizer copper tube are cladded with the slow-cooling strips molded by huge thermal resistance materials along an axial direction from the lower side of a board-clamping groove to the middle part of the crystallizer copper tube; inner side faces of the slow-cooling strips are uniformly distributed with inlaid protruding column bodies along the axial direction; and each inlaid protruding column body is respectively in an inlaid fitting with an inlaid blind hole which is arranged on the outer angle part of the crystallizer copper tube. By cladding the slow-cooling strips on the outer angle parts of the square billet crystallizer copper tube, the utility model enlarges thermal resistance of the angle parts, improves cooling uniformity of steel billets molded inside the crystallizer copper tube, thereby avoiding the defects of surface sinking on the angle parts, inner fissures and the like on the steel billets, and guaranteeing steel billet quality.

Description

Crystallizer copper tube with corners covered with slow cooling strips

technical field

The utility model relates to a crystallizer copper tube used for metallurgical continuous casting equipment, in particular to a crystallizer copper tube whose corners are coated with slow cooling strips.

Background technique

Common tubular billet crystallizer copper tube is used in the continuous casting production process. Since the continuous casting billet is partially cooled by two-dimensional double-sided heat dissipation, while the face is cooled by one side, the cooling speed of the corner is faster than that of the face, resulting in billet The cooling rate in the same section is uneven, so when drawing some special steel types that are sensitive to cracks, the billets often have defects such as surface depressions near the corners and internal cracks, which affect the quality grade of the billets, and may even cause billets in serious cases. Bulk waste.

Contents of the invention

The purpose of this utility model is to solve the above problems, to provide a kind of crystallization of the corner coated slow cooling strip which can relatively reduce the cooling speed of the corner of the copper tube of the billet crystallizer and improve the uniformity of cooling in the same section during the billet forming process. copper tube.

The technical solution to achieve the above purpose is: a mold copper tube with corners coated with slow cooling strips, which includes a billet mold copper tube with clamping grooves on the upper part, along the four outer corners of the mold copper tube. Axially from the bottom of the clamping plate groove to the middle of the crystallizer copper tube, there is a slow cooling strip formed by a large thermal resistance material. The inner surface of the slow cooling strip is evenly distributed along the axial direction. The convex cylinders are inlaid with the inlaid blind holes arranged at the outer corners of the copper tube of the crystallizer respectively.

The above-mentioned slow cooling strips and convex cylinders are preferably formed of rubber materials.

The utility model relatively increases the thermal resistance of the corners by covering the four outer corners of the common billet crystallizer copper tube with slow cooling strips, so that the cooling uniformity of the billet forming in the crystallizer copper tube is improved, thereby avoiding The steel billet has defects such as corner surface depressions and internal cracks to ensure the quality of the steel billet.

Description of drawings

Fig. 1 is the front view of the crystallizer copper tube coated with the slow cooling bar at the corner;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is a partial enlarged view of I in Fig. 2 .

Detailed ways

The specific embodiment of the utility model will be described in conjunction with the accompanying drawings.

As shown in the accompanying drawing, the mold copper tube coated with the slow cooling bar at this corner includes a billet mold copper tube 2 with a clamp groove 1 on the upper part, and the four outer corners of the crystallizer copper tube 2 are axially aligned with the clamp From the bottom of the plate groove to the middle of the copper tube of the crystallizer, a slow cooling strip 3 formed by a large thermal resistance material is covered. On the inner surface of the slow cooling strip 3, there are inlaid convex cylinders 4 evenly distributed along the axial direction, and each inlaid convex cylinder The pillars 4 are inlaid with the inlaid blind holes arranged at the outer corners of the copper tube of the crystallizer respectively.

The slow cooling strip 3 of the present utility model can be formed by materials such as heat-resistant rubber and heat-resistant plastic with large thermal resistance.

As shown in accompanying drawing 3, the convex column body 4 placed on the inner side of the slow cooling bar 3 is suitable for adopting a cylindrical column body, and the setting of the convex column body can not only improve the bonding strength of the slow cooling bar 3 and the mold copper tube 2, but also It is also conducive to further improving the uniformity of heat dissipation and cooling at the corners of the copper tube of the crystallizer.

Claims (2)

1. A kind of crystallizer copper tube that the angle portion is coated with slow cooling bar, it comprises the square billet crystallizer copper tube (2) of upper band clamp groove (1), it is characterized in that: in the mold copper tube four A slow-cooling bar (3) formed by a large thermal resistance material is covered with an outer corner axially from the bottom of the clamping plate slot to the middle of the crystallizer copper tube, and the inner surface of the slow-cooling bar is uniformly distributed along the axial direction Inlaid convex cylinders (4), each inlaid convex cylinders are respectively inlaid with the inlaid blind holes arranged at the outer corners of the copper tube of the crystallizer. 2. The crystallizer copper tube with corners coated with slow-cooling strips according to claim 1, characterized in that: the slow-cooling strips (3) and convex cylinders (4) are formed of rubber materials.

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