A split funnel type crystallizer wide side mold and split funnel type crystallizer

Abstract

The utility model provides a kind of split funnel type crystallizer wide side formwork and split funnel type crystallizer, it is related to continuous casting crystallizer technical field, including wide side copper sheet and wide side support plate, wide side copper sheet buckling on wide side support plate;The periphery of one side of wide side copper sheet opposite wide side support plate is equipped with copper sheet sealing surface, and the area around copper sheet sealing surface is recess structure, and a plurality of matrix arrangement's threaded boss is equipped in recess structure;Wide side copper sheet is respectively sealed with wide side support plate by threaded boss and copper sheet sealing surface;Connecting rib is equipped between vertically arranged adjacent threaded boss, and threaded boss and connecting rib divide recess structure into a plurality of copper sheet cooling water channels of column in turn communication;The thickness of wide side copper sheet is 1 / 5~1 / 4 of the maximum total thickness of wide side formwork.Solved the technical problem that copper sheet is vulnerable spare in prior art, replacement cost is high, and cooling is not uniform, and copper sheet hot face high temperature zone thermal cracking phenomenon is more serious.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting crystallizer technology, and in particular to a split-type funnel-shaped crystallizer wide-side template and a split-type funnel-shaped crystallizer. Background Technology

[0002] Funnel-shaped crystallizers are used to produce relatively thin slabs, and in conjunction with continuous rolling mills, they form highly efficient and energy-saving thin-plate strips. When molten steel is poured into the funnel-shaped crystallizer, the thickness of the slab exiting the bottom of the crystallizer is usually less than the thickness of the nozzle. This makes it impossible to operate with a conventional parallel crystallizer. Therefore, a funnel shape is developed in the upper pouring area of ​​the combined crystallizer, where the wide-edged copper plate forms a funnel shape with the inner cavity expanding outwards. The thinnest part of the copper plate is located in the middle of the upper opening, while the thickest part is at the top of the outer area of ​​the funnel, with a thickness difference of more than double. Copper plates are consumable parts; typically, after 10mm of wear or repair on the working surface, the copper plate is removed from the machine and scrapped. This results in copper plates with significant thickness still needing to be scrapped. Thicker copper plates not only require more… The raw materials are expensive, and the processing volume and cycle are long and costly. In addition, due to the thickness of this type of copper plate, in order to ensure relatively uniform cooling of the working surface of the copper plate, it is necessary to dig a deep groove on the back of the copper plate, so that the bottom of the groove is relatively uniformly thick from the working surface of the copper plate. In order to form relatively uniform cooling water gaps in each water tank, metal filler strips need to be set on the surface of the water tank. The metal filler strips and the water tank form a U-shaped cooling water gap. However, it is too difficult to process the water tank and filler strips to form a cooling water gap that is consistent with the surface of the funnel, so uniform cooling is practically difficult to achieve. After use, the copper plate still has a lot of thickness left and has to be scrapped, which is really a waste.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] One of the objectives of this utility model is to provide a detachable funnel-shaped crystallizer wide-side template to solve the technical problems in the prior art where the copper plate is a vulnerable part, the replacement cost is high, the cooling is uneven, and the hot surface of the copper plate has serious thermal cracking in the high-temperature area.

[0005] The second objective of this invention is to provide a split-type funnel crystallizer.

[0006] In order to achieve the above-mentioned objectives of this utility model, the following technical solution is adopted:

[0007] In a first aspect, this utility model provides a detachable funnel-shaped crystallizer wide-side template, the wide-side template including a wide-side copper plate and a wide-side support plate, the wide-side copper plate being fastened to the wide-side support plate;

[0008] The wide-edge copper plate has a copper plate sealing surface around the perimeter of the side opposite to the wide-edge support plate. The area surrounded by the copper plate sealing surface has a groove structure, and a number of threaded bosses arranged in a matrix are provided in the groove structure. The wide-edge copper plate is sealed and connected to the wide-edge support plate through the threaded bosses and the copper plate sealing surface respectively.

[0009] The vertically arranged adjacent threaded bosses are provided with connecting ribs, and the threaded bosses and connecting ribs divide the groove structure into several columns of sequentially connected copper plate cooling water channels.

[0010] The thickness of the wide-edge copper plate is 1 / 5 to 1 / 4 of the maximum total thickness of the wide-edge template.

[0011] Furthermore, one end of the copper plate cooling water channel is connected to the first water inlet of the support plate near the upper opening of the copper plate, and the other end is connected to the second water inlet of the support plate near the lower opening of the copper plate.

[0012] The depth of the copper plate cooling water channel is 6~8mm.

[0013] Furthermore, the connecting rib is connected to the outer circle of the threaded boss by a transition arc, and the connecting rib and the threaded boss are respectively connected to the bottom surface of the groove structure by a transition arc.

[0014] The threaded bosses in several columns are symmetrically arranged with the center line of the wide-edge copper plate; starting from the center line, the threaded bosses in adjacent vertical columns on both sides are staggered in vertical height.

[0015] The width of the connecting rib is 3~6mm;

[0016] The angle radius (R) of the transition arc is 1~3mm;

[0017] Furthermore, the top surface of the connecting rib is lower than the height of the copper plate sealing surface, and the vertical distance between the top surface of the connecting rib and the copper plate sealing surface is 1~3mm.

[0018] Furthermore, an elongated boss is provided between the vertical rows of threaded bosses in the flat area of ​​the wide-edge copper plate. The length direction of the elongated boss is parallel to the direction of the central axis of the vertical row of threaded bosses, and the top surface of the elongated boss is on the same plane as the sealing surface of the copper plate.

[0019] The elongated boss and the threaded bosses on both sides are not in the same horizontal direction;

[0020] The width of the elongated boss is 3~6mm and the length is 15~35mm.

[0021] Furthermore, the groove structure includes a high heat flux density cooling surface. This high heat flux density cooling surface extends from the starting point line of the copper plate recess change, which is 140-160mm from the top of the copper plate, to below the sealing surface of the copper plate at the top of the copper plate. The recess depth on the high heat flux density cooling surface gradually increases from the starting point line to the ending point line of the copper plate recess change, which is 110-130mm from the top of the copper plate. The recess depth remains constant in the area from the ending point line to below the sealing surface of the copper plate at the top of the copper plate. The recess depth of the high heat flux density cooling surface gradually increases from 0 to 0.5-2mm.

[0022] The support surface of the wide-edge support plate is provided with a raised surface. The raised surface extends from the starting point line of the support plate's concavity change 140~160mm from the top of the copper plate to below the sealing surface of the copper plate at the top of the copper plate. The height of the raised surface gradually increases from the starting point line of the support plate's concavity change to the ending point line of the support plate's concavity change 110~130mm from the top of the copper plate. The height of the raised surface remains unchanged from the ending point line of the support plate's concavity change to below the sealing surface of the copper plate at the top of the copper plate. The height of the raised surface gradually increases from 0 to 1.5~3mm.

[0023] Furthermore, a midline for the copper plate concavity change is provided between the starting line and the ending line of the copper plate concavity change, and the midline for the copper plate concavity change is the intersection of the depth gradient curvature; a midline for the support plate concavity change is provided between the starting line and the ending line of the support plate concavity change, corresponding to the midline for the copper plate concavity change.

[0024] Furthermore, the top surface height of the elongated boss located within 130mm of the top edge of the copper plate is lower than the height of the copper plate sealing surface, and the difference between the height of the elongated boss located within 130mm of the top edge of the copper plate and the height of the copper plate sealing surface matches the protrusion height of the protrusion surface.

[0025] Furthermore, the raised surface is provided with a plurality of countersunk holes corresponding to the threaded boss, and the depth of the countersunk holes is 1.5~3mm.

[0026] Secondly, this utility model provides a split funnel-shaped crystallizer, including two oppositely arranged wide-side templates and two oppositely arranged narrow-side templates, the two narrow-side templates being respectively connected to the two wide-side templates, and a funnel structure being formed between the two oppositely arranged wide-side templates;

[0027] The wide-side template is the aforementioned split-type funnel-shaped crystallizer wide-side template.

[0028] This utility model provides a split-type funnel-shaped crystallizer wide-side template, which splits the relatively thick funnel-shaped crystallizer template into two parts along its thickness direction. One part is a wide-side copper plate that comes into contact with the liquid metal during operation and serves as a heat conduction, condensation, and mold. The other part is a wide-side support plate that is fixedly connected to and supports the copper plate. The wide-side support plate can be reused, requiring only the replacement of the wide-side copper plate. Due to the reduced thickness of the wide-side copper plate, replacement costs are reduced. The threaded boss and the copper plate sealing surface are sealed to the wide-side support plate by bolts. The threaded boss and connecting ribs form a cooling water channel for the copper plate. At the same time, the connecting ribs can strengthen the copper plate, increase the effective heat transfer area, and ensure uniform cooling. This solves the technical problems in the prior art where the copper plate is a vulnerable part, has high replacement costs, uneven cooling, and severe thermal cracking in the high-temperature area of ​​the copper plate's hot surface. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the wide-side template of a split-type funnel-shaped crystallizer provided in Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the wide-side template of a split-type funnel-shaped crystallizer provided in Embodiment 1 of this utility model;

[0032] Figure 3 This is a schematic diagram of the back structure of the wide-edge copper plate provided in Embodiment 1 of this utility model;

[0033] Figure 4 for Figure 3 Enlarged structural diagram at point S1;

[0034] Figure 5 for Figure 3 Enlarged structural diagram at point S2;

[0035] Figure 6 This is a three-dimensional assembly diagram of a split-type funnel-shaped crystallizer provided in Embodiment 2 of this utility model;

[0036] Figure 7 This is a schematic diagram of the overall structure of an undivided funnel-shaped crystallizer in the prior art.

[0037] Icons: 10-Wide-edge template; 20-Narrow-edge template; 30-Funnel structure; 101-Wide-edge copper plate; 102-Wide-edge support plate; 1011-Upper opening of copper plate; 1012-Lower opening of copper plate; 1013-Copper plate cooling water channel; 10131-Cooling surface of high heat flux density zone; 1014-Copper plate sealing surface; 1015-Threaded blind hole; 1016-Threaded boss; 1017-Connecting rib; 10171-Top surface of connecting rib; 1018-Transition arc; 1019-Elongated boss; 10191-High heat flux density... 101911 - Top surface of the elongated boss in the high heat flux density zone; A - Reference surface; B - Sealing surface; C - First column; D - Second column; G1 - Starting point line of copper plate concavity change; G2 - Middle line of copper plate concavity change; G3 - Ending point line of copper plate concavity change; 1021 - First nozzle of support plate; 1022 - Second nozzle of support plate; 10231 - Raised surface; 1026 - Countersunk hole; F1 - Starting point line of support plate concavity change; F2 - Middle line of support plate concavity change; F3 - Ending point line of support plate concavity change. Detailed Implementation

[0038] Unless otherwise defined herein, the scientific and technical terms used in connection with this utility model shall have the meanings commonly understood by one of ordinary skill in the art. The meaning and scope of terms shall be clear; however, in any case of potential ambiguity, the definitions provided herein shall prevail over any dictionary or foreign definitions. In this application, unless otherwise stated, the use of "or" means "and / or". Furthermore, the use of the term "comprising" and other forms is non-limiting.

[0039] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this utility model, it should be noted that the terms "proximal end," "distal end," "front end," "rear end," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] The terms "horizontal" and "vertical" do not imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] This utility model provides a detachable funnel-shaped crystallizer wide-side template 10, which includes a wide-side copper plate 101 and a wide-side support plate 102, with the wide-side copper plate 101 fastened to the wide-side support plate 102.

[0046] The wide-edge copper plate 101 has a copper plate sealing surface 1014 around the periphery of the side opposite to the wide-edge support plate 102. The copper plate sealing surface 1014 has a groove structure around the area, and a plurality of threaded bosses 1016 arranged in a matrix are provided in the groove structure. The wide-edge copper plate 101 is sealed and connected to the wide-edge support plate 102 through the threaded bosses 1016 and the copper plate sealing surface 1014 respectively.

[0047] A connecting rib 1017 is provided between the vertically arranged adjacent threaded bosses 1016. The threaded bosses 1016 and the connecting rib 1017 divide the groove structure into several rows of sequentially connected copper plate cooling water channels 1013.

[0048] The thickness of the wide-edge copper plate 101 is 1 / 5 to 1 / 4 of the maximum total thickness of the wide-edge template 10.

[0049] The thick funnel-shaped crystallizer template is divided into two parts along its thickness. One part is a wide-edged copper plate 101 that comes into contact with the liquid metal during operation and serves as a heat conduction, condensation, and mold. The other part is a wide-edged support plate 102 that is fixedly connected to and supports the copper plate. The wide-edged support plate 102 is reusable, requiring only the replacement of the wide-edged copper plate 101. The reduced thickness of the wide-edged copper plate 101 lowers replacement costs. The threaded boss 1016 and the copper plate sealing surface 1014 are sealed to the wide-edged support plate 102 by bolts. The threaded boss 1016 and the connecting rib 1017 together form a copper plate cooling water channel 1013. Simultaneously, the connecting rib 1017 strengthens the copper plate, increases the effective heat transfer area, and ensures uniform cooling. This solves the technical problems in existing technologies where the copper plate is a vulnerable component, has high replacement costs, and suffers from uneven cooling and severe thermal cracking in the high-temperature zone of the copper plate's hot surface.

[0050] The thickness of the wide-edge copper plate 101 can be, but is not limited to, 20 / 100, 21 / 100, 22 / 100, 23 / 100, 24 / 100, or 25 / 100 of the maximum total thickness of the wide-edge template 10, or any value between 1 / 5 and 1 / 4. In some specific embodiments, for a wide-edge template 10 with a maximum total thickness of 130 mm, the thickness of the wide-edge copper plate 101 can be set to 26-32.5 mm, preferably 28-30 mm.

[0051] In some specific embodiments, the wide-side support plate 102 is made of stainless steel or a copper alloy with a hardness HB > 200 to maintain corrosion resistance and achieve continuous use.

[0052] The copper alloy can be aluminum bronze or beryllium nickel copper, and the stainless steel can be 304 stainless steel or 310 stainless steel.

[0053] In some specific embodiments, one end of the copper plate cooling water channel 1013 is connected to the first water inlet 1021 of the support plate near the upper opening 1011 of the copper plate, and the other end is connected to the second water inlet 1022 of the support plate near the lower opening 1012 of the copper plate.

[0054] Depending on the specific circumstances, the first water inlet 1021 or the second water inlet 1022 of the support plate can be selected as the water inlet chamber or the water outlet chamber. The water inlet chamber and the water outlet chamber are respectively connected to the cooling water channel and the water tank.

[0055] The depth of the water channel needs to take into account heat transfer, the tensile strength of the threaded boss, and the possible repair thickness of the copper plate. In some specific embodiments, the depth of the copper plate cooling water channel 1013 is 6~8mm, preferably 7mm.

[0056] In some specific embodiments, the connecting rib 1017 is connected to the outer circle of the threaded boss 1016 via a transition arc 1018, and the connecting rib 1017 and the threaded boss 1016 are respectively connected to the bottom surface of the groove structure via a transition arc 1018. The transition arc 1018 helps increase strength, overcomes the weakness of the sharp corner of the machining tool, and prevents stress concentration. If the arc angle R is too small, the desired effect will not be achieved; if the arc angle R is too large, the heat transfer capacity will be reduced. In some specific embodiments, the angle R of the transition arc 1018 is 1~3mm; preferably, the angle R is 3mm.

[0057] Among them, the tool used to machine the transition arc 1018 is a ball end mill with a diameter of 6mm; since the wide copper plate 101 is funnel-shaped, the ball end mill can easily ensure that the machined trajectory is closer to the funnel-shaped design requirements. Smaller diameter ball end mills are fragile and have low machining efficiency.

[0058] In some specific embodiments, several rows of threaded bosses 1016 are symmetrically arranged with the center line of the wide-side copper plate 101; starting from the center line, the adjacent vertical rows of threaded bosses 1016 on both sides are staggered in vertical height; this can effectively reduce the large difference between the cross-sectional area of ​​the cooling channel of the threaded bosses 1016 at the same height position and other parts, which would cause uneven cooling capacity of the copper plate, thereby reducing defects in the continuous casting billet.

[0059] In some specific embodiments, the width of the connecting rib 1017 is 3~6mm; if the thickness of the connecting rib is too thin, it is easy to deform during processing, and if the connecting rib is too thick, the heat transfer capacity will be reduced. The connecting rib with a width of 3~6mm can prevent deformation during processing and prevent the reduction of heat transfer capacity; preferably, the width of the connecting rib 1017 is 4mm.

[0060] In some specific embodiments, the top surface of the connecting rib 1017 is lower than the height of the copper plate sealing surface 1014, and the vertical distance between the top surface of the connecting rib 1017 and the copper plate sealing surface 1014 is 1-3 mm. On the one hand, this eliminates the possibility of different pressure differences caused by the vertical walls formed by the threaded bosses 1016 and the connecting rib 1017 obstructing the cooling water channels between the columns. The gap formed below the copper plate sealing surface 1014 allows for lateral water flow compensation between different water channels, creating a relatively balanced pressure difference between the upper opening 1011 and the lower opening 1012 of all copper plates. On the other hand, the lower height of the connecting rib below the copper plate sealing surface 1014 also increases the heat exchange area of ​​the connecting rib, further improving heat conduction and reducing the tendency for thermal cracking on the working surface of the copper plate. Preferably, the vertical distance between the top surface of the connecting rib 1017 and the copper plate sealing surface 1014 is 2 mm.

[0061] In some specific embodiments, an elongated boss 1019 is provided between the vertical rows of threaded bosses 1016 in the straight area of ​​the wide-side copper plate 101. The length direction of the elongated boss 1019 is parallel to the direction of the central axis of the vertical row of threaded bosses 1016, and the top surface of the elongated boss 1019 is located on the same plane as the copper plate sealing surface 1014.

[0062] The straight area is located in the clamping position of the funnel-shaped crystallizer mold combined with the narrow-side template 20, which is beneficial for clamping and supporting the wide-side copper plate 101. Especially when the narrow-side template 20 is between the two rows of screw holes of the wide-side copper plate 101, the long strip boss is set to play a supporting role, which can effectively prevent the wide-side copper plate from deforming when the wide-side template clamps the narrow-side template.

[0063] In some specific embodiments, the width of the elongated boss 1019 is 3~6mm and the length is 15~35mm.

[0064] In some specific embodiments, the elongated boss 1019 and the threaded bosses 1016 on both sides are not in the same horizontal direction. This is to avoid problems caused by excessive changes in water flow velocity due to the narrowing of the copper plate cooling water channel 1013 at the threaded bosses 1016.

[0065] In some specific embodiments, the groove structure is provided with a high heat flux density cooling surface 10131. The high heat flux density cooling surface 10131 extends from the copper plate recess change starting point line G1, which is 140~160mm away from the upper edge of the copper plate 1011, to below the copper plate sealing surface 1014 located at the upper edge of the copper plate 1011. The recess depth on the high heat flux density cooling surface 10131 gradually increases from the copper plate recess change starting point line G1 to the copper plate recess change ending point line G3, which is 110~130mm away from the upper edge of the copper plate 1011. The recess depth in the area from the copper plate recess change ending point line G3 to below the copper plate sealing surface 1014 located at the upper edge of the copper plate 1011 remains unchanged. The recess depth of the high heat flux density cooling surface 10131 gradually increases from 0 to 0.5~2mm.

[0066] The recess depth of the cooling surface 10131 in the high heat flux density region can be gradually increased from 0 to 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2mm, or it can be any value between 0.5 and 2mm, preferably 1mm.

[0067] It should be noted that the depth of the depression remains unchanged in the area from the endpoint line G3 of the copper plate depression to the area below the sealing surface 1014 of the copper plate located at the top of the copper plate 1011. This area, especially the area from 70mm from the top of the copper plate 1011 to 10~130mm from the top of the copper plate 1011, which is also the area from the liquid slag surface to 110~130mm from the top, is the area with the highest heat flux density, and is called the highest heat flux density area.

[0068] In some specific embodiments, a middle line G2 for the change of copper plate concavity is provided between the starting line G1 and the ending line G3 of the change of copper plate concavity. The middle line G2 is the intersection of the curvature of the gradual depth change. Setting the middle line G2 can reduce the curvature change. If the depth change is not significant, the middle line G2 may not be set. However, the middle line G2 will make the water flow change more streamlined.

[0069] In some specific embodiments, the support surface of the wide-side support plate 102 is provided with a raised surface 10231. The raised surface 10231 extends from the starting point line F1 of the support plate recess change at a distance of 140~160mm from the upper edge of the copper plate 1011 to below the copper plate sealing surface 1014 located at the upper edge of the copper plate 1011. The raised height of the raised surface 10231 gradually increases from the starting point line F1 of the support plate recess change to the ending point line F3 of the support plate recess change at a distance of 110~130mm from the upper edge of the copper plate 1011. The raised height remains unchanged from the ending point line F3 of the support plate recess change to below the copper plate sealing surface 1014 located at the upper edge of the copper plate 1011. The raised height of the raised surface 10231 gradually increases from 0 to 1.5~3mm.

[0070] The height of the protrusion of the cooling surface 10131 in the high heat flux density region can be, but is not limited to, gradually increasing from 0 to 1.5mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm or 3mm, or any value between 1.5 and 3mm, preferably 2mm.

[0071] In some specific embodiments, a support plate concavity change intermediate line F2 corresponding to the copper plate concavity change intermediate line G2 is provided between the support plate concavity change starting line F1 and the support plate concavity change ending line F3.

[0072] In some specific embodiments, the top surface height of the elongated boss 1019 located within 110-130mm of the upper edge 1011 of the copper plate is lower than the height of the copper plate sealing surface 1014. The height difference between the elongated boss 1019 and the copper plate sealing surface 1014 within 110-130mm of the upper edge 1011 of the copper plate matches the protrusion height of the protrusion surface 10231. The elongated boss 1019 and the protrusion surface 10231 cooperate to provide support for clamping the wide-edge copper plate 101, without affecting the adjustment of the local structure of the wide-edge copper plate 101. The elongated boss 1019 in this area coincides with the protrusion surface 10231 at the corresponding part of the wide-edge support plate 102 when assembled into a single wide-edge template 10.

[0073] In some specific embodiments, the raised surface 10231 is provided with a plurality of countersunk holes 1026 corresponding to the threaded boss 1016, and the depth of the countersunk holes 1026 is 1.5~3mm. This can reduce the wall thickness of the wide-edge copper plate 101 in the region of highest heat flux density, and reduce the gap between the wide-edge copper plate 101 and the wide-edge support plate 102 in the copper plate cooling water channel 1013 within the region of highest heat flux density of the crystallizer, thereby reducing the cross-sectional area of ​​the region of highest heat flux density of the crystallizer, increasing the coolant flow rate in the region of highest heat flux density, reducing the gas film thermal resistance, and enhancing the heat exchange effect. In addition, it ensures that the effective depth of the internal thread of the threaded boss 1016 is not reduced due to the local thinning of the copper plate in the region of highest heat flux density of the threaded blind hole 1015, so that the tensile strength of the thread is not affected, and the overall material thickness of the wide-edge copper plate 101 remains unchanged.

[0074] According to another aspect of the present invention, a split funnel-shaped crystallizer is also provided, including two oppositely arranged wide-side templates 10 and two oppositely arranged narrow-side templates 20, the two narrow-side templates 20 being respectively connected to the two wide-side templates 10, and a funnel structure 30 being formed between the two oppositely arranged wide-side templates 10.

[0075] The wide-side template 10 is the aforementioned split-type funnel-shaped crystallizer wide-side template.

[0076] The present invention will be further illustrated below through embodiments. Unless otherwise specified, the materials in the embodiments are prepared according to existing methods or purchased directly from the market.

[0077] Example 1

[0078] Combination Figures 1-5As described, a split funnel-shaped crystallizer wide-side template includes a wide-side copper plate 101 and a wide-side support plate 102. The thickness of the wide-side copper plate 101 is 1 / 5 to 1 / 4 of the maximum thickness of the split funnel-shaped crystallizer wide-side template. A copper plate cooling water channel 1013 is provided between the wide-side copper plate 101 and the wide-side support plate 102.

[0079] The wide-side support plate 102 is made of stainless steel, such as 304 or 310 stainless steel; or a copper alloy with a hardness HB > 200, such as aluminum bronze or beryllium nickel copper; it is corrosion resistant and can be used permanently unless the equipment is no longer used.

[0080] The back of the wide-edge copper plate 101 is provided with multiple vertical rows and multiple horizontal rows of threaded blind holes 1015. Corresponding threaded holes are provided on the wide-edge support plate 102 for fixed connection by bolts. On the back of the wide-edge copper plate 101, except for the copper plate sealing surface 1014 around the four sides of the wide-edge copper plate 101 and the support platform surface around the threaded blind holes 1015, most of the rest is processed into a recess to form a copper plate cooling water channel 1013. The copper plate sealing surface 1014 around the four sides is the same thickness as the working surface. The wide-edge copper plate 101 is divided into a copper plate upper opening 1011 and a copper plate lower opening 1012. The wide-edge support plate 102 is provided with a first horizontal water inlet 1021 and a second horizontal water inlet 1022 near the copper plate upper opening 1011 and the copper plate lower opening 1012, respectively. The first horizontal water inlet 1021 and the second horizontal water inlet 1022 are respectively connected to the cooling water channel and the water tank.

[0081] Normally, the surface of the copper plate sealing surface 1014 of the wide-edge copper plate 101 should be used as the reference surface for description. However, since the back of the wide-edge copper plate 101 is machined into a recessed copper plate cooling water channel 1013, the unmachined part is retained for ease of description. Therefore, the recessed curved surface on the back of the wide-edge copper plate 101 is used as the reference surface A of the copper plate for description.

[0082] Relative to reference surface A, the support platform protrusion retained in the threaded blind hole 1015 is called the threaded boss 1016. The curved surface where the threaded boss 1016 and the copper plate sealing surface 1014 are located is the same sealing surface B. Among them, the threaded bosses 1016 adjacent to the copper plate sealing surface 1014 are integrated with the copper plate sealing surface 1014. Connecting ribs 1017 are provided between the remaining vertically arranged threaded bosses 1016. The connecting ribs 1017 are transitionally connected to the outer circle of the threaded bosses 1016, forming multiple rows of sequentially connected copper plate cooling water channels 1013. The width of the connecting ribs 1017 is 3-6 mm; in this embodiment, the width of the connecting ribs 1017 is set to 4 mm.

[0083] Except for the outermost ring of threaded blind holes 1015, the remaining threaded blind holes 1015 are arranged symmetrically with the vertical center line of the wide copper plate 101. The vertical rows of threaded blind holes 1015 are spaced apart from the center line by the first column C and the second column D. The threaded holes in the first column C and the second column D are staggered from each other in vertical height.

[0084] The threaded boss 1016, the connecting rib 1017 and the reference surface A are connected by a transition arc 1018. The angle R of the transition arc 1018 is 1~3mm. In this embodiment, the angle R of the transition arc 1018 is 3mm. The tool for machining the transition arc 1018 is a ball end mill with a diameter of 6mm.

[0085] The depth of the water gap between the sealing surface B and the reference surface A is 6~8mm, that is, the depth of the copper plate cooling water channel 1013 is 6~8mm, and in this embodiment it is 7mm.

[0086] The top surface of the connecting rib 1017 is cut off, and the top surface of the connecting rib 10171 after cutting off is 1~3mm lower than the sealing surface B; in this embodiment, the top surface of the connecting rib 10171 is 2mm lower than the sealing surface B.

[0087] On the back of the wide-edge copper plate 101, between the first column C and the second column D cooling channels in the straight areas on both sides away from the funnel area, there are elongated bosses 1019 that are parallel to the center line of the vertical threaded boss. The surface of the elongated boss is also on the sealing surface B. The elongated bosses 1019 avoid overlapping with the threaded bosses 1016 in the horizontal direction and are located in the clamping position area of ​​the funnel-shaped crystallizer mold combined with the narrow-face copper plate. The width of the elongated bosses 1019 is 3~6mm and the length is 15~35mm.

[0088] The recess processed on the back of the wide-edge copper plate 101 extends from the starting point line G1 (140-160mm from the top edge of the copper plate 1011) to the ending point line G3 (110-130mm from the top edge of the copper plate 1011), with the depth gradually increasing from 0 to 0.5-2mm. The deepened surface is the cooling surface 10131 in the high heat flux density area. The recess depth remains constant from the ending point line G3 to below the sealing surface 1014 located at the top edge of the copper plate 1011. A mid-line G2 for the recess change is set between G1 and the ending point line G3, and the mid-line G2 is an intersection line with a predetermined depth gradient curvature. Corresponding to the wide-edge support plate 102 of the wide-edge copper plate 101, within the cooling area (excluding the surrounding sealing surface), the recess depth extends from the top edge of the copper plate 101... From the starting line F1 of the support plate recess change (140~160mm) to the ending line F3 of the support plate recess change (110~130mm from the top of the copper plate 1011), the height of the protrusion gradually increases from 0 to 1.5~3mm. From the ending line F3 of the support plate recess change to the area below the copper plate sealing surface 1014 located at the top of the copper plate 1011, the height of the protrusion remains constant. The protruding surface is the protruding surface 10231. A support plate recess change intermediate line F2 is set between FI and the ending line F3 of the support plate recess change. The support plate recess change intermediate line F2 corresponds to the copper plate recess change intermediate line G2. Within the range of 140~160mm from the top of the copper plate 1011, a countersunk hole 1026 with a depth of 1.5~3mm is machined on the wide-side support plate 102 corresponding to the threaded boss 1016 on the wide-side copper plate 101. The elongated protrusions on the back of the wide-edge copper plate 101, extending from the top edge 1011 to a distance of 100mm to 130mm from the top edge 1011, are called high heat flux density elongated protrusions 10191. The height of the top surface 101911 of the high heat flux density elongated protrusion 10191 is 1.5 to 3mm lower than the height of the top surface of other elongated protrusions 1019, which is consistent with the height of the protrusions added by the wide-edge support plate 102 in this area. It still plays a supporting role when the wide-edge copper plate 101 is clamped, while not affecting the adjustment of the local structure of the copper plate.

[0089] In this embodiment, the recess processed on the back of the wide-edge copper plate 101 extends from the starting point line G1, 140-160mm from the top edge of the copper plate 1011, to the ending point line G3, 110-130mm from the top edge of the copper plate 1011. The depth of the recess gradually increases from 0 to 1mm, that is, the cooling surface 10131 in the high heat flux density area is deepened by 1mm. The wide-edge support plate 102 corresponds to the wide-edge copper plate 101, extending from the starting point line F1, 140-160mm from the top edge of the copper plate 1011, to the ending point G3, 110-130mm from the top edge of the copper plate 1011. The support plate has a concave change endpoint line F3 of 110~130mm. The height of the protrusion gradually increases from 0 to 2mm, that is, the height of the protrusion surface 10231 is 2mm. On the back of the wide-edge copper plate 101, from the top of the copper plate 1011 to the top of the copper plate 1011110~130mm away from the top of the copper plate 1011, the height of the top surface 101911 of the long strip protrusion in the high heat flux density area is 2mm lower than the height of the top surface of other long strip protrusions 1019, which is consistent with the increase of the height of the protrusion of the support plate in this area. That is, 2mm is milled off the top surface 101911 of the long strip protrusion in the high heat flux density area. The top surface 101911 of the long strip protrusion in the high heat flux density area coincides with the protrusion surface 10231 of the corresponding part of the wide-edge support plate 102 when they are combined into a wide-edge template 10.

[0090] Example 2

[0091] Combination Figure 6 To illustrate, a split-type funnel-shaped crystallizer includes two oppositely arranged wide-side templates 10 and two oppositely arranged narrow-side templates 20. The two narrow-side templates 20 are respectively connected to the two wide-side templates 10, and the wide-side templates 10 and narrow-side templates 20 are combined to form a funnel structure 30 when viewed from top to bottom. Figure 7 The existing technology of an undisassembled funnel crystallizer requires the replacement of the entire copper plate.

[0092] The wide-side template 10 is the split-type funnel-shaped crystallizer wide-side template provided in Example 1.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A detachable funnel-shaped crystallizer wide-side template, characterized in that, The wide-side template (10) includes a wide-side copper plate (101) and a wide-side support plate (102), wherein the wide-side copper plate (101) is fastened to the wide-side support plate (102); The wide-edge copper plate (101) has a copper plate sealing surface (1014) around the periphery of the side opposite to the wide-edge support plate (102). The copper plate sealing surface (1014) has a groove structure around the area, and a number of threaded bosses (1016) arranged in a matrix are provided in the groove structure. The wide-edge copper plate (101) is sealed to the wide-edge support plate (102) through the threaded bosses (1016) and the copper plate sealing surface (1014). A connecting rib (1017) is provided between vertically arranged adjacent threaded bosses (1016), and the threaded bosses (1016) and connecting ribs (1017) divide the groove structure into several rows of copper plate cooling water channels (1013) connected in sequence. The thickness of the wide-edge copper plate (101) is 1 / 5 to 1 / 4 of the maximum total thickness of the wide-edge template (10).

2. The split-type funnel-shaped crystallizer wide-side template according to claim 1, characterized in that, One end of the copper plate cooling water channel (1013) is connected to the first water inlet (1021) of the support plate near the upper opening (1011) of the copper plate, and the other end is connected to the second water inlet (1022) of the support plate near the lower opening (1012) of the copper plate. The depth of the copper plate cooling water channel (1013) is 6~8mm.

3. The wide-side template of the split funnel-shaped crystallizer according to claim 2, characterized in that, The connecting rib (1017) is connected to the outer circle of the threaded boss (1016) by a transition arc (1018), and the connecting rib (1017) and the threaded boss (1016) are respectively connected to the bottom surface of the groove structure by a transition arc (1018). The threaded bosses (1016) are arranged symmetrically with the center line of the wide copper plate (101); starting from the center line, the threaded bosses (1016) in adjacent vertical columns on both sides are staggered in vertical height. The width of the connecting rib (1017) is 3~6mm; The angular radius (R) of the transition arc (1018) is 1~3mm.

4. The wide-side template of the split funnel-shaped crystallizer according to claim 1, characterized in that, The top surface of the connecting rib (1017) is lower than the height of the copper plate sealing surface (1014), and the vertical distance between the top surface of the connecting rib (1017) and the copper plate sealing surface (1014) is 1~3mm.

5. The wide-side template of the split funnel-shaped crystallizer according to claim 1, characterized in that, A long strip boss (1019) is provided between the vertical rows of threaded bosses (1016) in the straight area of ​​the wide-edge copper plate (101). The length direction of the long strip boss (1019) is parallel to the direction of the central axis of the vertical row of threaded bosses (1016). The top surface of the long strip boss (1019) is located on the same plane as the sealing surface of the copper plate (1014). The elongated boss (1019) and the threaded bosses (1016) on both sides are not in the same horizontal direction; The width of the elongated boss (1019) is 3~6mm and the length is 15~35mm.

6. The wide-side template of the split funnel-shaped crystallizer according to claim 1, characterized in that, The groove structure includes a high heat flux density cooling surface (10131). The high heat flux density cooling surface (10131) extends from the starting point line (G1) of the copper plate recess change 140~160mm from the top of the copper plate (1011) to below the copper plate sealing surface (1014) at the top of the copper plate (1011). The recess depth on the high heat flux density cooling surface (10131) gradually increases from the starting point line (G1) to the ending point line (G3) of the copper plate recess change 110~130mm from the top of the copper plate (1011). The recess depth remains unchanged in the area from the ending point line (G3) to below the copper plate sealing surface (1014) at the top of the copper plate (1011). The recess depth of the high heat flux density cooling surface (10131) gradually increases from 0 to 0.5~2mm. The support surface of the wide-side support plate (102) is provided with a raised surface (10231). The raised surface (10231) extends from the starting point line (F1) of the support plate indentation change 140~160mm from the top of the copper plate (1011) to below the copper plate sealing surface (1014) at the top of the copper plate (1011). The raised height of the raised surface (10231) gradually increases from the starting point line (F1) of the support plate indentation change to the ending point line (F3) of the support plate indentation change 110~130mm from the top of the copper plate (1011). The raised height from the ending point line (F3) of the support plate indentation change to below the copper plate sealing surface (1014) at the top of the copper plate (1011) remains unchanged. The raised height of the raised surface (10231) gradually increases from 0 to 1.5~3mm.

7. The wide-side template of the split funnel-shaped crystallizer according to claim 6, characterized in that, A copper plate concavity change intermediate line (G2) is provided between the copper plate concavity change starting line (G1) and the copper plate concavity change ending line (G3), and the copper plate concavity change intermediate line (G2) is the intersection line of the depth gradient curvature; a support plate concavity change intermediate line (F2) corresponding to the copper plate concavity change intermediate line (G2) is provided between the support plate concavity change starting line (F1) and the support plate concavity change ending line (F3).

8. The wide-side template of the split funnel-shaped crystallizer according to claim 6, characterized in that, The top surface height of the elongated boss (1019) located between the top edge (1011) and 130mm away from the top edge (1011) of the copper plate is lower than the height of the sealing surface (1014) of the copper plate. The height difference between the elongated boss (1019) located between the top edge (1011) and 130mm away from the top edge (1011) of the copper plate and the sealing surface (1014) of the copper plate matches the protrusion height of the protrusion surface (10231).

9. The wide-side template of the split funnel-shaped crystallizer according to claim 6, characterized in that, The raised surface (10231) is provided with a plurality of countersunk holes (1026) corresponding to the threaded boss (1016), and the depth of the countersunk holes (1026) is 1.5~3mm.

10. A split-type funnel-shaped crystallizer, characterized in that, It includes two oppositely arranged wide-side templates (10) and two oppositely arranged narrow-side templates (20), the two narrow-side templates (20) are respectively connected to the two wide-side templates (10), and a funnel structure (30) is formed in the middle of the two oppositely arranged wide-side templates (10). The wide-side template (10) is the wide-side template of the split funnel-shaped crystallizer as described in any one of claims 1 to 9.

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