CORPO DE COQUILHA

Abstract

A mould body (1) for the continuous casting of metal, with a longitudinal direction L between an upper end (4) and a lower end (5), wherein at least a partial region of the outer surface (6) of the mould body (1) is provided with a cooling structure (7) to improve the cooling. The cooling structure (7) has at least one V-shaped region with two limbs at an opening angle with respect to each other and with a point, the point being directed towards the lower end (5).

Description

1 / 16 COQUILLA BODY

[044] The present invention relates to a mold body for continuous metal casting according to the characteristics of the preamble of claim 1.

[045] Chill molds for continuous metal casting, either individually (chill tube) or in conjunction with other chill molds (chill plates), define a mold cavity with an upper and a lower end in the casting direction. The chill mold is cooled externally. Chill molds are generally made of copper and have the function of transporting heat from the metal melt from the inside of the mold to the outside of the mold. In this case, the heat transfer coefficient from the outside of the mold to the cooling medium plays a decisive role. The cooling medium is generally water, which circulates in a closed circuit. In this case, it flows turbulently along the outer surface of the chill mold with a flow velocity typically between 6 and 14 m / s, and sometimes even slightly faster. Heat flux densities in the casting surface area of ​​3 to 7 MW / m2 are common.The cooling water comes into contact with the outer wall of the mold at a speed of approximately 10 m / s, and heats up between 6 and 12 K during this time. In this case, the temperatures on the outer wall of the mold are typically between 120 and 300 °C and on the inner wall between approximately 250 and 450 °C. The wall thicknesses of the mold bodies depend on the size of the mold. In the case of mold tubes, they are generally 8 to 12% of the size of the casting and therefore have a distance from the cooling water of 10 to a maximum of 35 mm. Mold tubes typically have a length between 700 mm and 1200 mm.

[046] German patent document DE 195 08 169 C5 describes a mold for the continuous casting of metals in which the Petition 870250083839, dated 09 / 17 / 2025, page 37 / 68 2 / 16 The surface on the cooling side is equipped with a structure with different shapes and / or cavities. The cavities affect the flow turbulence. They increase the external surface area of ​​the mold and, consequently, the cooling.

[047] US patent document 5,207,266 A describes a mold body for continuous metal casting, in which a partial area of ​​the outer surface is equipped with a cooling structure for improved cooling. The cooling structure has at least one V-shaped area with two tabs that are at an opening angle to each other with a tip that is directed towards the lower end. The V-shaped area is formed as a groove on the outer surface and has a width and a depth. The grooves are traversed by a cooling medium. The grooves are covered by a protective plate.

[048] In addition, Chinese patent document CN 113 798 451 A and Korean patent document KR 2016 0057 169 A should be mentioned in the state of the art.

[049] The invention is based on the objective of improving the cooling power of a mold body for the continuous casting of metals.

[050] This objective is achieved with a mold body having the characteristics of patent claim 1.

[051] The mold body according to the invention, for continuous metal casting, has a longitudinal direction between an upper end and a lower end in the casting direction. At least a partial area of ​​the outer surface of the mold tube is equipped with a cooling structure to improve cooling. The cooling structure has at least one V-shaped area with two tabs arranged at an opening angle to each other, and with a tip, the tip being directed towards the Petition 870250083839, dated 09 / 17 / 2025, page 38 / 68 3 / 16 lower end of the mold tube. The orientation of the V-shaped tip is directed, in particular, against the flow direction of the cooling medium. The V-shaped area is formed as a groove on the outer surface and has a groove width and depth.

[052] The V-shaped areas in the boundary layer between the outer surface and the turbulent flow cooling medium create macrostructures, which increase the turbulence of the cooling medium, thereby increasing the heat transfer and dissipation from the chill tube wall to the cooling medium.

[053] From the point of view of fluid dynamics, geometrically defined V-shaped areas can be designated as barriers. These are not individual point cavities, but rather V-shaped structures of defined length and shape, which, unlike point cavities, the cooling medium cannot flow laterally around, but can only flow over or through. In this sense, V-shaped areas act as stumbling blocks for the flow. Consequently, these are not rough structures, but rather cavities on the outer surfaces of the mold body, in the sense of corrugated or channel structures or grooves of greater length. In particular, the extended length of each individual V-shaped area is greater than the width of one side of an outer surface of a mold tube.The extended length is the length measured from one endpoint of the V-shaped area relative to its other endpoint, following the course of the V-shaped area.

[054] The effect of a tripwire for generating turbulent flow can be replicated by having several of the V-shaped areas according to the invention arranged one behind the other in the longitudinal direction of the mold body and / or one next to the other. Petition 870250083839, dated 09 / 17 / 2025, page 39 / 68 4 / 16 transversely in relation to the longitudinal direction. Transverse to the longitudinal direction means, in particular, at an angle of 90° in relation to the longitudinal direction. The term transverse also includes angles other than 90°, except 0° and 180°.

[055] The adjusted distance of the V-shaped areas in the longitudinal direction leads to the generation of additional turbulence and vortices, especially near the surface of the mold body. Furthermore, through the V-shaped areas, the surface area on the outside of the mold body is increased. These factors lead to an improved cooling effect.

[056] In the case of V-shaped areas arranged one behind the other in the longitudinal direction, one or more of the V-shaped areas overlap in the longitudinal direction, depending on the size of an opening angle of the V-shaped areas. Preferably, the opening angle of the V-shaped areas is in a range of 30° to 150°, measured from flap to flap. The opening angle is composed of the two flap angles, each of which is related to the longitudinal direction of the mold body. The flap angles are therefore 15° to 75° respectively. Preferably, the flap angles are the same size. However, the flap angles may also differ from each other.

[057] It is possible to arrange several V-shaped areas, arranged one behind the other in the longitudinal direction, side by side or transversely in relation to the flow direction or transversely to the longitudinal direction. The number of V-shaped areas arranged side by side, transversely in relation to the longitudinal direction, can be from 1 to 50, in particular from 1 to 10. Preferably, the number of V-shaped areas arranged side by side is less than 5, with 3 V-shaped areas being preferable.

[058] V-shaped areas arranged side by side Petition 870250083839, dated 09 / 17 / 2025, p. 40 / 68 5 / 16 sections can be connected to form a corrugated structure. The corrugated structure can be uniform, meaning that all the opening angles of the V-shaped areas of the corrugated structure are equal. In principle, a uniform opening angle can be predicted for all V-shaped areas of a mold tube. In this way, parallel structures can be created, which can be arranged with relatively small distances from each other on the outer surface. In this case, the tabs of two V-shaped areas arranged one behind the other in the longitudinal direction pass parallel to each other.

[059] The V-shaped area is formed as a groove on the outer surface. The groove has a groove width measured transversely relative to the longitudinal direction of the groove and a groove depth. The groove width is preferably in a range of 2 to 10 mm, and the groove depth is in a range of 0.1 to 2 mm. The groove depth is preferably at least 0.3 mm. However, in the context of the invention, groove depths of at least 0.1 mm are no longer considered in the roughness range, but functionally also in the trip wire range. The groove width and depth are preferably constant along the entire length of the groove. Alternatively, the groove depth and / or groove width vary to adapt to local cooling properties.

[060] The grooves may have a rounded, rectangular, or even trapezoidal cross-section. Consequently, the groove depth may be constant in a rectangular cross-section. In a rounded cross-section, the groove depth is greater in the center of the groove. In a trapezoidal cross-section, the groove depth may be greater on one side of the groove where the cooling fluid flows than on the other side of the groove. The cooling medium essentially flows over the first Petition 870250083839, dated 09 / 17 / 2025, page 41 / 68 6 / 16 side and rotates within the deepest area of ​​the groove, then flows out of the groove again, through the base of the ascending groove on the other side and into the subsequent groove. In general, grooves, in addition to increasing the surface area, have the effect of reducing the average distance between the cooling medium and the surface to be cooled, i.e., the inner side of the mold body. In this way, the cooling effect is increased locally.

[061] The distance between the V-shaped areas adjacent to the tabs that run parallel to each other preferably corresponds at least to the width of the groove. It is preferably from 2 to 10 mm. The distance should be selected in such a way that additional micro-turbulence is generated near the surface. This turbulence increases the cooling effect.

[062] A particularly large amount of heat must be dissipated in the meniscus area of ​​a mold, i.e., the mold body, the meniscus area being adjacent to the upper end. The meniscus area is the area where the molten metal surface is located during casting. The cooling structure should therefore extend for a maximum of 30% of the length adjacent to the upper end. Cooling structures according to the invention are not required in the area furthest from the mold tube. Therefore, it is more advantageous, from a manufacturing point of view, to arrange the cooling structures only in an area of ​​approximately 30% of the length adjacent to the upper end. Furthermore, the cooling structure should also begin at a distance of less than 50 mm from the upper end of the mold tube.

[063] In a special embodiment of the cooling structure, it is extended to the sides, that is, for example, towards the corners of a chill tube, or towards the edges of a Petition 870250083839, dated 09 / 17 / 2025, page 42 / 68 7 / 16 chill plate, with the depth of the grooves decreasing towards the sides. Similarly, the cooling structure can also be extended in the casting direction, i.e., with the depth of the grooves gradually decreasing. In this way, a smoother transition is created between the areas with and without the cooling structure. In this case, the cooling structure can also extend over areas larger than the 30% mentioned above in the meniscus area, or 30% below the calculated casting surface of the chill body.

[064] In a complementary or optional manner, the V-shaped area can also become narrower in the casting direction, gradually shortening the flanges, so that they are geometrically less significant, i.e., smaller and possibly also less deep.

[065] If the mold body is designed as a mold plate, then several partial areas can be fitted with the described cooling structure, especially hot spots where the thermal load is particularly high. These partial areas can start at a distance of 30% of the length of the mold plate or can also be arranged adjacent to the lower end.

[066] A special design can be carried out for round chill tubes, namely a cooling structure that extends 360° in the meniscus area, such that the cooling structure is arranged across the entire circumference area.

[067] The mold tube according to the invention is provided, in particular, for the production of rectangular cross-sections. In this case, the mold tube has an outer surface with multiple sides. Cooling structures can be arranged on multiple sides, in particular, on all sides. In principle, it is possible for identical cooling structures to be placed on all sides. Petition 870250083839, dated 09 / 17 / 2025, p. 43 / 68 8 / 16 sides. However, the invention also considers that the sides may have different cooling structures, the differences being in the number and size of the individual grooves. In principle, it is also possible to use cooling structures on the individual sides with different opening angles. In a mold plate with cooling structures in various partial areas, the cooling structures may differ from each other in shape and size, as explained above for a mold tube.

[068] For the generation of turbulence, in an advantageous development of the invention it is provided that in the direction of flow, in front of and optionally also behind a groove, at least one elevation is formed on the outer surface. The elevation may extend for part of the length of the groove and, preferably, for the entire length of the groove. In particular, it is directly adjacent to the groove. The elevation preferably projects from 0.1 to 2 mm, in particular, from 0.1 to 1 mm from the outer surface, outside the groove. The grooves may be produced by a lamination process. During the lamination of the grooves, the displaced material may be used to generate at least one elevation. The elevations have, in particular, a rounded cross-section in the form of a rim.

[069] The invention shows a mold body (mold tube, mold plate) for casting metal melts, consisting in particular of copper or a copper alloy, and exhibiting an increased heat transfer coefficient in the area of ​​greatest thermal stress, the meniscus area, and in this case being able to efficiently equalize different cooling powers, in particular, in the circumference of a mold tube. Taking into account the specific conditions of use in mold tubes or mold plates, V-shaped channel structures, whose ends point in Petition 870250083839, dated 09 / 17 / 2025, page 44 / 68 9 / 16 in the opposite direction to the flow direction of the cooling medium, have proven to be advantageous.

[070] The mold bodies according to the invention correspond, moreover, to the molds of the construction types mentioned at the beginning, that is, they are used in conjunction with a cooling medium, conducted in a closed circuit and with flow velocities between 6 and 14 m / s on the outer surface of the mold, with heat flux densities of 3 to 7 MW per square meter occurring in the meniscus area. Typical lengths of mold bodies in the form of mold tubes are between 700 and 1200 mm. The cooling water remains in contact with the mold body for approximately 100 ms. During this contact time with the mold tube, it heats up to around 6 to 12 K. The temperatures of the mold wall with the mold body according to the invention are typically 120 to 300 °C on the outside and 250 to 450 °C on the inside.The wall thicknesses of the mold body depend on the shape and generally range from 8 to 12% of the casting size, preferably between 10 and 35 mm.

[071] The invention will be explained below with the aid of embodiments represented in schematic drawings. These are shown: In Figure 1, a perspective representation of a mold body in the shape of a mold tube in an early embodiment; In Figure 2, a side view of the upper end of the mold tube from Figure 1; In Figure 3, a second embodiment of a mold body in a perspective view; In Figure 4, the mold body from Figure 3 is shown in a side view at the upper end area; Petition 870250083839, dated 09 / 17 / 2025, page 45 / 68 10 / 16 In Figure 5, a cross-sectional representation through a groove of the mold body of Figure 4; In Figure 6, a cross-sectional representation through a second embodiment of a groove and In Figure 7, a cross-sectional representation through a third embodiment of a groove; In Figure 8, a cross-sectional representation through a fourth embodiment of a groove; In Figure 9, a mold body in the shape of a mold plate and In Figure 10, the mold body from Figure 9 is shown in a perspective view.

[072] Figure 1 shows a mold body 1 in the shape of a mold tube for continuous metal casting. The mold body 1 has a rectangular cross-section and, with its wall 3, confines a rectangular hollow mold space 2, which extends from an upper end 4 of the mold body 1 to a lower end 5. The mold body 1 is slightly curved in a longitudinal direction L. The casting direction G for the liquid metal passes through the upper end 4 towards the lower end 5. The mold body 1 is cooled on the outside by cooling water. The flow direction S of the cooling water is opposite to the casting direction G.

[073] The mold body 1 is made of copper. It has an outer surface 6, which is essentially smooth, except for a cooling structure 7, which is located on each of the sides 8 and 9 shown of the outer surface 6. The two cooling structures 7 shown on sides 8 and 9 are identical. The same cooling structures 7 are located on the non-visible sides.

[074] The cooling structure 7 has a length L1 measured in the longitudinal direction L, which corresponds approximately to a Petition 870250083839, dated 09 / 17 / 2025, pp. 46 / 68 11 / 16 third of the length L2 of the mold tube 1. The cooling structure 7 starts at a distance A1 of approximately 50 mm from the upper end 4.

[075] Figure 3 shows a detailed side view of the assembly of the cooling structure 7. The cooling structure 7 consists of several V-shaped areas 10, which are arranged one behind the other in the longitudinal direction L. Each V-shaped area 10 has two tabs 11, 12 of equal length, and a rounded tip 13 that connects the two tabs 11, 12 to each other. The tip 13 is directed towards the lower end 5, i.e., opposite to the direction of the flow S. In the lower area of ​​the cooling structure 7, the cooling structure 7 is therefore V-shaped. At the upper end of the cooling structure 7, this cooling structure 7 ends over its upper width, essentially parallel and at a distance from the upper end 4.In this case, the length of tabs 11 and 12 of the upper V-shaped areas 10 gradually decreases towards the center of side 8, such that the central V-shaped area 10 is significantly smaller and narrower than the adjacent V-shaped areas 10 below, i.e., in the casting direction.

[076] The V-shaped areas 10 extend on this side 8 of the outer side 6 for approximately 80% of the width on the outer side measured from side 8 of the mold body 1. The mold body 1 has rounded corners / edges on the outer side, between adjacent sides 8, 9, which are not equipped with a cooling structure 7 in the sense of the invention. The cooling structure 7 terminates at a distance parallel to the rounded edges of the mold body 1.

[077] In the case of this embodiment, from 10 to 20, specifically 17, V-shaped areas 7 are arranged one behind the other in the longitudinal direction L. All V-shaped areas 10 have the same opening angle W1, which for mold tubes of the shape of Petition 870250083839, dated 09 / 17 / 2025, page 47 / 68 12 / 16 construction according to the invention can be between 30 and 150°. In this embodiment, this angle is 90°. Due to the parallel arrangement and identical opening angle W1, all tabs 12 arranged on one side of the tip 13 or all tabs 11 arranged on the other side are parallel to each other. Tabs 11, 12 or V-shaped areas 10 are formed respectively as grooves 14 on the outer surface 6. Each of the grooves 14 has the same groove width B1 and groove depth T1. Figure 5 shows groove 14 in cross-section. It has a groove width B1 of 4.6 mm and a groove depth T1 of 1.5 mm. The base of the groove is rounded with a radius of 2.5 mm.

[078] Figure 6 shows an embodiment with a rectangular groove. Here, the width of groove B1 is constant, as is the depth of groove T1.

[079] The example of implementation in figure 7 differs from that in figure 6, because with a constant groove width B1, the groove depth T1 has a greater depth T1 on one side 15 of the groove 14 than on the opposite side 16, with the groove depth T2. The cross-section is therefore trapezoidal. The lower side 15 in the plane of the image is the one to which the cooling medium flows first.

[080] The width of groove B1 is in a range of 2 to 10 mm, while the depth of the groove is in a range of 0.1 to 2 mm. In the embodiment examples of figures 5 and 6, the information for the groove depth refers to the deepest part of the groove. In the case of the embodiment of figure 7, the smallest depth of groove T2 is at least 0.1 mm. The depth of groove T2 on the other side 15 is greater.

[081] The distance A2 between two tabs 11, 12 that pass parallel to each other is exactly equal to the width of the groove B1. The distance A2 Petition 870250083839, dated 09 / 17 / 2025, pp. 48 / 68 13 / 16 is measured perpendicularly to the longitudinal extent of the tabs 11, 12.

[082] In the embodiment of figures 1 and 2, the arrangement of the cooling structure 7 in relation to the respective side 8, 9 is symmetrical with respect to the central longitudinal axis of the respective side 8, 9. The cooling structure 7 has the same distance respectively in relation to the left and also right edges of the sides 8, 9, and the tabs 11, 12 also always have the same length, so that the tips 13 are always located on the central longitudinal axis of the respective side 8, 9.

[083] Figures 2 and 4 show an example of an alternative embodiment, in which the mold body 1, i.e., the mold tube, has the same basic shape, length, and configuration. In this regard, reference is made to the explanations relating to the embodiment example in Figures 1 and 3. The only difference lies in the differentiated cooling structure 7a, which has several V-shaped areas 10a-c arranged side by side, transversely to the longitudinal direction. Each of the V-shaped areas 10a-c has a tip 13a-c and tabs 11a-c, 12a-c. The tabs adjacent to each other 11a-b, 12b-c are connected to each other by arcs 17, so that a wavy structure is created. As all tabs 11a-c, 12ac have the same length, a uniform wavy structure results. Arches 17 and points 13a-c are identical.

[084] In this embodiment, the cooling structure 7a has the same width as the cooling structure 7 of the first embodiment. The cooling structure 7a starts at the same distance A1 from the upper end 4 of the chill tube 1. The lower end of the cooling structure 7a is slightly wavy due to the triple and substantially smaller V-shaped areas 10a-c, but not overall V-shaped as in the embodiment of Figure 1. However, also in this case, Petition 870250083839, dated 09 / 17 / 2025, page 49 / 68 14 / 16 The cooling structure 7a extends for approximately one third of the length L of the mold body 1. With respect to the structure of the V-shaped areas 10a-c, reference is made to the explanations in figures 5 to 7, which show possible cross-sections of the grooves 14.

[085] Regarding the opening angle W1 and the distance A2 of the longitudinally successive V-shaped areas 10a-c, reference is made to the explanations of the first embodiment example. The construction method of figures 2 and 4 shows, therefore, not only the V-shaped areas 10a, which are arranged side by side transversely to the longitudinal direction L, but also those arranged one behind the other in the longitudinal direction L. In the case of this embodiment example, there are fourteen V-shaped areas arranged one behind the other in the longitudinal direction, and three V-shaped areas 10a-c arranged respectively side by side.

[086] As also in the embodiment example of figures 1 and , the cooling structure 7a is subjected to flow from below, i.e., in the opposite direction to casting G.

[087] Figure 8 shows an embodiment with an additional elevation 18 on the outer surface 6, wherein the elevation 18 is positioned ahead of the groove 14 in the direction of flow S. The elevation 18 has a height H1 of 0.1 to 1 mm. It has a semicircular cross-section and directly limits, i.e., without clearance, the groove 14. It serves to generate turbulence.

[088] Figures 9 and 10 show a chill plate in two different views as another example for a chill body 1 with the cooling structure 7 mentioned earlier. The cooling structure is arranged at a distance from the upper end 4 and the lower end 5 and is located on the outer surface 6, at the height of the meniscus. The cooling structure 7 extends Petition 870250083839, dated 09 / 17 / 2025, pp. 50 / 68 15 / 16 only for a portion of the length of the mold plate, but for almost the entire width of the mold plate. The S-direction of the cooling medium flow points from the lower end 5 to the upper end 4 of the mold body 1. In total, six identical V-shaped areas are arranged side by side in the transverse direction, and seven V-shaped areas are arranged one behind the other in the longitudinal direction. The areas arranged side by side are connected to each other, in such a way that a zigzag structure is created on the outer surface 6. Reference symbols: - cup body - hollow mold space - wall of 1 - upper end of 1 - lower end of 1 - outer surface of 1 - cooling structure in 6 7th cooling structure - 6-sided - 6-sided - V-shaped area 10th V-shaped area 10b V-shaped area 10c V-shaped area - 10 tab 11th tab of 10 11b tab of 10 11c tab of 10 - 10 tab 12th tab of 10 Petition 870250083839, dated 09 / 17 / 2025, pp. 51 / 68 16 / 16 12b tab of 10 12c 10-inch flap - 10 tip 13a - 10-point 13b - 10 point 13c - 10 tip - groove - 14-sided - 14-sided - bow - elevation A1 - distance between 7, 7a and 4 L - longitudinal direction L1 - length of 7.7a L2 - length of 1 G - casting direction S - direction of flow A2 - distance between 10 and 10 B1 - width of 14 H1 - height of 18 T1 - depth of 14 T2 - depth of 14 W1 - opening angle Petition 870250083839, dated 09 / 17 / 2025, pp. 52 / 68

Claims

1 / 3 CLAIMS 1. A mold body (1) for continuous metal casting, with a longitudinal direction (L) between an upper end (4) and a lower end (5) in the casting direction, wherein at least a partial area of ​​the outer surface (6) of the mold body (1) is equipped with a cooling structure (7, 7a) for improved cooling, wherein the cooling structure (7, 7a) has at least one V-shaped area (10, 10a-c), with two tabs (11, 11a-c, 12, 12a-c) that are at an opening angle (W1) to each other and a tip (13, 13a-c), wherein the tip (13, 13a-c) is directed towards the lower end (5), wherein the V-shaped area (10, 10a-c) is shaped as a groove (14) on the outer surface (6) and has a width of groove (B1) and groove depth (T1, T2), characterized by the fact that the orientation of the tip (13,13a-c) of the V-shaped area is directed against the flow direction of a cooling medium, and from the point of view of fluid dynamics, several of the geometrically defined V-shaped areas (10, 10a-c) are designated as barriers in the form of structures of defined length and shape, and the cooling medium cannot flow laterally around them, but can only flow over or through them, in order to create macrostructures in the area of ​​a boundary layer between the outer surface (6) of the mold body (1) and the turbulent flowing cooling medium, which greatly agitate the cooling medium and thus cause increased heat transfer and heat dissipation from the mold wall to the cooling medium.

2. Mold body (1) according to claim 1, characterized in that several V-shaped areas (10, 10a-c) are one behind the other in the longitudinal direction (L) and / or one next to the other transversely with respect to the longitudinal direction (L).

3. Mold body (1) according to claim 2, Petition 870250083839, dated 09 / 17 / 2025, p. 54 / 68 2 / 3 characterized in that the V-shaped areas (10, 10a-c) arranged side by side are connected to each other and form a wavy structure.

4. Mold body (1) according to any one of claims 1 to 3, characterized in that the number of V-shaped areas (10a-c) arranged side by side transversely with respect to the longitudinal direction (L) has the value from 1 to 50, in particular, from 1 to 10.

5. Mold body (1) according to any one of claims 1 to 4, characterized in that the opening angles (W1) of the V-shaped areas are in a range from 30° to 150°.

6. Mold body (1) according to any one of claims 1 to 5, characterized in that the tips (13, 13a-c) are rounded.

7. Mold body (1) according to any one of claims 1 to 6, characterized in that the tabs (11, 11ac, 12, 12a-c) of two V-shaped areas (10, 10a-c) arranged one behind the other in the longitudinal direction (L) pass parallel to each other.

8. Mold body (1) according to any one of claims 1 to 7, characterized in that the groove width (B1) is in a range of 2 to 10 mm, and the groove depth (T1, T2) is in a range of 0.1 to 2 mm.

9. Mold body (1) according to any one of claims 1 to 8, characterized in that the groove depth (T1) on one side (15) of the groove (14) fed by means of cooling is greater than on the other side (16) of the groove (14).

10. Mold body (1) according to any one of claims 1 to 9, characterized in that a distance (A2) from the tabs (11, 11a-c, 12, 12a-c) of two adjacent V-shaped areas (10, 10a Petition 870250083839, dated 17 / 09 / 2025, page 55 / 68 3 / 3 c) that pass parallel to each other corresponds at least to the groove width (B1).

11. Mold body (1) according to any one of claims 1 to 10, characterized in that it has a length (L2) from the upper end (4) to the lower end (5), wherein the cooling structure (7, 7a) extends for a maximum of 30% of the length (L2).

12. Mold body (1) according to any one of claims 1 to 11, characterized in that the cooling structure (7, 7a) starts at a distance (A1) of less than 50 mm from the upper end (4).

13. Mold body (1) according to any one of claims 1 to 12, characterized in that the mold body (1) is a mold tube, wherein the outer surface (6) has several sides (8, 9), wherein the cooling structures (7, 7a) are arranged on several sides (8, 9), and wherein the sides (8, 9) have different cooling structures (7, 7a).

14. Chill mold body (1) according to claim 13, characterized in that the cooling structures (7, 7a) have different opening angles (W1).

15. Mold body (1) according to any one of claims 1 to 13, characterized in that the mold body (1) is a mold plate.

16. Mold body (1) according to any one of claims 1 to 15, characterized in that in the flow direction (S) in front of and optionally also behind a groove (14) an elevation (18) is formed on the outer surface (6). Petition 870250083839, dated 17 / 09 / 2025, pp. 56 / 68

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