Pouring method of suspension cylinder

Abstract

The invention relates to a suspension cylinder pouring method which comprises the following steps: dividing a pouring body into n pouring blocks according to a suspension cylinder pouring drawing; in the first stage, m pouring templates matched with the pouring blocks are manufactured; after being assembled, each pouring template is placed on a weighing scaffold; pouring castable into the m pouring templates to complete the m pouring blocks in the first stage; after the m pouring blocks in the first stage reach the formwork removal condition, the pouring formwork is removed, second-stage construction is conducted, and the space between every two adjacent poured and formed pouring blocks is repeatedly constructed according to the steps of the first stage; when the pouring block in the second stage is solidified, the pouring template and the weighing scaffold are dismantled; by means of the arrangement, the problems that formwork erecting space is narrow, formwork erecting is difficult and the like are solved, and construction efficiency and construction quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial lime kilns, in particular to a casting method of a hanging cylinder. Background Art

[0002] At present, the double-chamber lime kiln is one of the most advanced lime production equipment, which is widely used in the production of industrial lime and building lime. It is mainly composed of two vertical kiln chambers that are mirror images of each other.

[0003] The traditional double-chamber lime kiln hanging cylinder castable construction mostly adopts the conventional civil engineering formwork support method. The surface of the castable is prone to quality defects such as large inclusions, roughness, and external dimensions that do not meet the requirements of the drawings. In addition, the construction space in this area is small, the process is cumbersome, the formwork is difficult, and the error is large. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a casting method for a suspension cylinder, which has the advantage of being able to strictly control the formwork error, effectively overcome the problems of narrow formwork support space and difficulty in formwork support, and improve construction efficiency and construction quality.

[0005] The above-mentioned invention object of the present invention is achieved through the following technical scheme: A method for casting a hanging cylinder comprises the following steps:

[0006] According to the hanging cylinder casting drawing, the casting body is divided into n casting blocks, where n is an even number greater than or equal to 4;

[0007] In the first stage, m casting templates adapted to the casting block are manufactured, wherein m=n / 2;

[0008] After each pouring formwork is assembled, place it on a weighing scaffold;

[0009] Pouring casting material into the m casting templates to complete the m casting blocks of the first stage;

[0010] After the m casting blocks of the first stage meet the conditions for demoulding, the casting template is removed to proceed to the second stage of construction, and the space between each two adjacent casting blocks that have been cast is repeatedly constructed according to the steps of the first stage;

[0011] In the second stage, the casting block solidifies and the casting template and the weighing scaffolding are removed.

[0012] Preferably, in the casting method of the suspension cylinder provided by the present invention, the casting template includes an arc-shaped bottom plate, two arc-shaped baffles and two vertical baffles, the two arc-shaped baffles and the two vertical baffles are all arranged on the upper surface of the arc-shaped bottom plate, the two arc-shaped baffles are arranged opposite to each other, and the two vertical baffles are arranged opposite to each other and are both located between the two arc-shaped baffles; the arc-shaped bottom plate, the two arc-shaped baffles and the two vertical baffles are jointly enclosed to form a casting space, and the castable is used to be cast in the casting space.

[0013] Preferably, in the casting method of the suspension cylinder provided by the present invention, two fastening screws are provided on the outer sides of the two vertical baffles, the two fastening screws are passed through the two arc-shaped baffles, the two fastening screws are arranged at intervals, each of the fastening screws is fixed to the two arc-shaped baffles by two nuts, the two nuts are screwed on the fastening screws, and the two nuts are respectively located on the side of the two arc-shaped baffles away from the vertical baffle.

[0014] Preferably, in the casting method of the suspension cylinder provided by the present invention, the inner arc length of the casting block ranges from 550 mm to 650 mm.

[0015] Preferably, in the casting method of the suspension cylinder provided by the present invention, the weighing scaffolding includes a sliding component, a fixed component and a supporting component, the sliding component and the fixed component are both arranged on the supporting component, the sliding component and the fixed component are spaced from top to bottom along the extension direction of the supporting component, and the sliding component can slide relative to the supporting component; the casting template is located on the sliding component.

[0016] Preferably, the method for casting a suspension cylinder provided by the present invention comprises placing each casting template on a weighing scaffold after being assembled; comprising:

[0017] Select a location as the starting point to set up the first set of weighing scaffolding and pouring formwork assembly of the first stage;

[0018] The assembly of the remaining m-1 groups of weighing scaffolding and casting formwork repeats the construction process of the first group of weighing scaffolding and casting formwork in a clockwise direction until the installation of the m casting formworks in the first stage is completed.

[0019] Preferably, in the casting method of the suspension cylinder provided by the present invention, the assembly of the first set of weighing scaffolding and casting formwork in the first stage at a selected position as a starting point comprises:

[0020] The weighing scaffold is preliminarily assembled into a tic-tac-toe frame using steel pipes, the arc bottom plate is placed on the sliding assembly of the weighing scaffold, the two arc baffles and two vertical baffles are placed on the arc bottom plate, and the four fastening screws are fixed to the two arc baffles using nuts;

[0021] According to the height of the vertical baffle, the sliding assembly of the casting template and the weighing scaffolding is moved upward as a whole until the top of the vertical baffle is close to the steel plate at the bottom of the suspension cylinder, the casting template is fixed with wooden planks and auxiliary steel pipes are set to support the vertical steel pipes of the weighing scaffolding.

[0022] Preferably, the casting method of the suspension cylinder provided by the present invention, pouring the casting material into the m casting templates to complete the m casting blocks of the first stage, includes: pouring the casting material into the m casting templates, using a vibrator to fully vibrate when pouring the casting material so that the casting material is evenly distributed inside the casting template, and smoothing the upper surface of the casting block after the casting of each casting template is completed.

[0023] Preferably, the casting method of the suspension cylinder provided by the present invention, after each of the casting templates is assembled and placed on a weighing scaffolding, and before pouring the casting material into the m casting templates to complete the m casting blocks of the first stage, also includes: cleaning the debris in the casting template and applying lubricating oil on the inner wall of the casting template.

[0024] Preferably, in the casting method of the suspension cylinder provided by the present invention, during the second stage of construction, when assembling each of the casting templates, the two vertical baffles in each of the casting templates are removed and two adjacent cast casting blocks are used to replace the two vertical baffles.

[0025] In summary, the beneficial technical effects of the present invention are as follows: the casting method of the suspension cylinder provided in the present application comprises the following steps: according to the casting drawing of the suspension cylinder, the casting body is divided into n casting blocks; in the first stage, m casting templates compatible with the casting blocks are made; after each casting template is assembled, it is placed on a weighing scaffold; the casting material is poured into the m casting templates to complete the m casting blocks of the first stage; after the m casting blocks of the first stage meet the conditions for demolding, the casting templates are removed to carry out the second stage of construction, and the space between each two adjacent cast casting blocks is repeatedly constructed according to the steps of the first stage; when the casting blocks of the second stage are solidified, the casting templates and the weighing scaffold are removed; such an arrangement overcomes the problems of narrow template support space and difficulty in supporting the template, and improves the construction efficiency and construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a flow chart of a method for casting a suspension cylinder provided in an embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of a template in a casting method of a hanging cylinder provided in an embodiment of the present invention.

[0028] Figure 3 It is a construction schematic diagram of the casting method of the suspension cylinder provided in an embodiment of the present invention.

[0029] Figure 4 It is a structural schematic diagram of a weighing scaffold in a casting method of a hanging cylinder provided in an embodiment of the present invention.

[0030] In the figure, 1. casting formwork; 10. arc bottom plate; 20. arc baffle; 30. vertical baffle; 40. fastening screw; 2. weighing scaffolding; 21. sliding assembly; 211. first horizontal steel pipe; 212. second horizontal steel pipe; 22. fixing assembly; 221. first steel pipe; 222. second steel pipe; 23. supporting assembly; 231. vertical steel pipe; 24. auxiliary steel pipe. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] Reference Figures 1 to 3 , is a method for casting a hanging cylinder disclosed in the present invention, and the method is used for casting a casting material at the hanging cylinder of a double-chamber lime kiln. For the sake of convenience, the bottom casting of the hanging cylinder of the lime kiln is taken as an example for description.

[0033] The casting method of the suspension cylinder provided in this embodiment comprises the following steps:

[0034] S101. According to the hanging cylinder casting drawing, the casting body is divided into n casting blocks, where n is an even number greater than or equal to 4.

[0035] In this embodiment, the casting body is divided into n=24 casting blocks according to the dimensions of the hanging cylinder casting drawing.

[0036] The inner arc length of the casting block ranges from 550 mm to 650 mm. Further, in this embodiment, the arc angle of the casting block ranges from 12° to 90°.

[0037] In one possible implementation in which the casting body is divided into n=24 casting blocks, the arc of each casting block is 15°.

[0038] S102. In the first stage, m casting templates 1 adapted to the casting blocks are manufactured, wherein m=n / 2.

[0039] Reference Figure 2In this embodiment, the casting template 1 includes an arc-shaped bottom plate 10, two arc-shaped baffles 20 and two vertical baffles 30. The two arc-shaped baffles 20 and the two vertical baffles 30 are both arranged on the upper surface of the arc-shaped bottom plate 10. The two arc-shaped baffles 20 are arranged opposite to each other, and the two vertical baffles 30 are arranged opposite to each other and are both located between the two arc-shaped baffles 20. The arc-shaped bottom plate 10, the two arc-shaped baffles 20 and the two vertical baffles 30 are jointly enclosed to form a casting space, and the casting material is used to be cast in the casting space. By setting the casting template 1, the casting template 1 has the advantages of simple installation, convenient disassembly, time-saving and labor-saving, and high precision.

[0040] Specifically, the arc bottom plate 10 is vertically arranged with the arc baffle 20, the arc bottom plate 10 is vertically arranged with the vertical baffle 30, and the arc baffle 20 is adapted to the arc bottom plate 10. Figure 2 Taking the shown orientation as an example, the two arc-shaped baffles 20 are respectively arranged at the front and rear ends of the arc-shaped bottom plate 10, and the bottom ends of the two arc-shaped baffles 20 are both abutted against the upper surface of the arc-shaped bottom plate 10, and the two vertical baffles 30 are respectively arranged at the left and right ends of the arc-shaped bottom end, and the opposite ends of the vertical baffles 30 are respectively abutted against the inner side walls of the two arc-shaped baffles 20, and the bottom ends of the two vertical baffles 30 are both abutted against the upper surface of the arc-shaped bottom plate 10.

[0041] Furthermore, in this embodiment, two fastening screws 40 are provided on the outer sides of the two vertical baffles 30, and the two fastening screws 40 are both passed through the two arc-shaped baffles 20. The two fastening screws 40 are arranged at intervals, and each fastening screw 40 is fixed to the two arc-shaped baffles 20 by two nuts. The two nuts are both screwed on the fastening screws 40, and the two nuts are respectively located on the side of the two arc-shaped baffles 20 away from the vertical baffle 30.

[0042] Specifically, the fastening bolt is arranged outside the casting space, and one side of the nut abuts against the side of the arc-shaped baffle away from the vertical baffle.

[0043] S103, placing each casting template 1 on the weighing scaffolding 2 after being assembled.

[0044] Continue to refer to Figure 4 In this embodiment, the weighing scaffolding 2 includes a sliding component 21, a fixed component 22 and a supporting component 23. The sliding component 21 and the fixed component 22 are both arranged on the supporting component 23. The sliding component 21 and the fixed component 22 are arranged at intervals from top to bottom along the extension direction of the supporting component 23. The sliding component 21 can slide relative to the supporting component 23; the casting template is located on the sliding component 21; by setting the sliding component 21, the sliding component 21 can drive the casting template to move.

[0045] Specifically, the sliding component 21 is clamped on the supporting component 23 by a buckle. When the sliding component 21 needs to be slid, the buckle is removed to make the sliding component 21 slide upward or downward along the extending direction of the supporting component 23.

[0046] The fixing component 22 is disposed close to the bottom end of the supporting component 23 , and the sliding component 21 is disposed close to the top end of the supporting component 23 .

[0047] The support assembly 23 includes four vertical steel pipes 231 , which are arranged in a rectangular array and together form a cavity.

[0048] Furthermore, in this embodiment, the sliding assembly 21 includes two first horizontal steel pipes 211 and three second horizontal steel pipes 212. The center line of the first horizontal steel pipe 211 is perpendicular to the center line of the second horizontal steel pipe 212. The two first horizontal steel pipes 211 are opposite to each other. The three second horizontal steel pipes 212 are all mounted on the two first horizontal steel pipes 211. The three second horizontal steel pipes 212 are spaced apart along the center line direction of the first horizontal steel pipe 211. The second horizontal steel pipe 212 is connected to the first horizontal steel pipe 211. The two first horizontal steel pipes 211 and the three second horizontal steel pipes 212 are jointly laid into a bearing plane. The first horizontal steel pipe 211 is clamped with the outer peripheral walls of the two corresponding vertical steel pipes 231. During use, the arc bottom plate is placed on the top of the bearing plane and is located in the cavity.

[0049] Among them, the fixing component 22 includes two first steel tubes 221 and two second steel tubes 222, the center line of the first steel tube 221 is perpendicular to the center line of the second steel tube 222, and the center line of the first steel tube 221 and the center line of the second steel tube 222 are both perpendicular to the center line of the vertical steel tube 231, the two first steel tubes 221 are arranged opposite to each other, the two second steel tubes 222 are laid on the two first steel tubes 221, and the two second steel tubes 222 are arranged at intervals along the center line direction of the first steel tube 221, the two first steel tubes 221 are connected to the two second steel tubes 222, the two first steel tubes 221 and the two second steel tubes 222 together form a tic-tac-toe shape, and the first steel tube 221 is clamped with the outer peripheral wall of the two corresponding vertical steel tubes 231.

[0050] Continue to refer to Figure 1 and Figure 3 In this embodiment, S103, after each casting template 1 is assembled, it is placed on the weighing scaffold 2; including:

[0051] S1031, select a location as the starting point to set up the first set of weighing scaffolding 2 and casting formwork assembly of the first stage.

[0052] Among them, S1031, selecting a location as a starting point to set up the first group of weighing scaffolding 2 and casting formwork assembly of the first stage, including:

[0053] S10311. Use steel pipes to preliminarily assemble the weighing scaffolding 2 into a tic-tac-toe frame, place the arc-shaped bottom plate on the sliding assembly 21 of the weighing scaffolding 2, place two arc-shaped baffles and two vertical baffles on the arc-shaped bottom plate, and fix four fastening screws on the two arc-shaped baffles using nuts.

[0054] S10312. According to the height of the vertical baffle, move the sliding assembly 21 of the casting template and the weighing scaffolding 2 upward as a whole until the top of the vertical baffle is close to the steel plate at the bottom of the suspension cylinder, use wooden planks to fix the casting template and set auxiliary steel pipes 24 to support the vertical steel pipes 231 of the weighing scaffolding 2.

[0055] Specifically, one end of the auxiliary steel pipe 24 is connected to the outer wall of the vertical steel pipe 231 close to the wall, and the other end of the auxiliary steel pipe 24 is pressed against the wall to prevent the steel pipe from deflecting.

[0056] S1032. The assembly of the remaining m-1 groups of weighing scaffolds 2 and casting templates repeats the construction process of the first group of weighing scaffolds and casting templates in a clockwise direction until the installation of the m casting templates in the first stage is completed.

[0057] Specifically, in an achievable method of dividing the casting body into n=24 casting blocks, each casting template 1 is divided into Figure 3 The first stage of construction shown in the figure is placed on the installed weighing scaffolding 2 after assembly is completed.

[0058] The remaining 11 groups of weighing scaffolds 2 and casting templates are assembled in a clockwise direction repeating the process of the first group of weighing scaffolds and casting templates until the installation of the 12 casting templates of the first stage is completed. S104, pouring casting material into m casting templates 1 to complete the m casting blocks of the first stage.

[0059] Among them, S104, pouring casting material into m casting templates 1 to complete the first stage of m casting blocks, includes: pouring casting material into m casting templates 1, using a vibrator to fully vibrate the casting material when pouring the casting material so that the casting material is evenly distributed inside the casting template 1, and after the pouring of each casting template 1 is completed, the upper surface of the casting block is smoothed.

[0060] Furthermore, in this embodiment, after each casting template 1 is assembled and placed on the weighing scaffolding 2, before pouring the casting material into the m casting templates 1 to complete the first stage of m casting blocks, it also includes: cleaning the debris in the casting template 1 and applying lubricating oil on the inner wall of the casting template 1; thereby ensuring the smoothness of the surface of the molded casting block.

[0061] S105, after the m casting blocks in the first stage meet the conditions for demoulding, the casting template 1 is removed to proceed to the second stage of construction, and the space between each two adjacent cast casting blocks is repeatedly constructed according to the steps of the first stage.

[0062] In one possible implementation of dividing the casting body into n=24 casting blocks, the entire casting body is divided into Figure 3 As shown, it is divided into a first stage and a second stage. There are 12 casting blocks in each stage. The casting blocks in the first stage are spaced apart from each other by a distance of one casting block, thereby improving the efficiency of the construction.

[0063] In the second stage of construction, when assembling each casting formwork 1, the two vertical baffles 30 in each casting formwork 1 are removed, and two adjacent cast blocks are used to replace the two vertical baffles 30.

[0064] S106, when the casting block solidifies in the second stage, the casting template 1 and the weighing scaffold 2 are removed.

[0065] The specific process of the casting method of the hanging cylinder provided in this embodiment is as follows: the casting body is divided into n=24 casting blocks according to the size of the hanging cylinder casting drawing and a casting template 1 of a suitable size is made; the casting template 1 is cast according to the size of the hanging cylinder casting drawing. Figure 3 After the first stage of construction is assembled, the position is placed on the installed weighing scaffolding 2. The debris inside the casting template 1 is cleaned and lubricating oil is applied to the inner wall of the casting template 1 to ensure the smoothness of the surface of the molded casting block. When pouring the casting material, a vibrator is used to fully vibrate so that the casting material is evenly distributed inside the casting template 1. After each casting template 1 is poured, the upper surface of the casting block is smoothed. After the casting of the casting block in the first stage is completed, the casting template 1 is removed after the casting block reaches the condition for demolding to proceed with the second stage of construction. The gap between the remaining two molded casting blocks is repeated according to the steps of the first stage (the vertical baffle 30 can be omitted when assembling the casting template 1, and the function of the vertical baffle 30 has been replaced by the molded casting blocks on both sides). Finally, wait for the casting block to solidify, remove the casting template 1 and the weighing scaffolding 2 to complete the pouring construction at the bottom of the suspension cylinder.

[0066] The casting method of the hanging cylinder provided in the present application comprises the following steps: according to the hanging cylinder casting drawing, the casting body is divided into n casting blocks; in the first stage, m casting templates 1 adapted to the casting blocks are made; after each casting template 1 is assembled, it is placed on a weighing scaffold 2; casting material is poured into the m casting templates 1 to complete the m casting blocks of the first stage; after the m casting blocks of the first stage meet the conditions for demolding, the casting templates 1 are removed to carry out the second stage of construction, and the space between each two adjacent cast casting blocks is repeatedly constructed according to the steps of the first stage; when the casting blocks of the second stage are solidified, the casting templates 1 and the weighing scaffold 2 are removed; such an arrangement overcomes the problems of narrow template support space and difficulty in supporting the template, and improves the construction efficiency and quality.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0068] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A method for casting a hanging cylinder, characterized in that: The steps include: According to the hanging cylinder casting drawing, the casting body is divided into n casting blocks, where n is an even number greater than or equal to 4; In the first stage, m casting templates adapted to the casting block are manufactured, wherein m=n / 2; After each pouring formwork is assembled, place it on a weighing scaffold; Pouring casting material into the m casting templates to complete the m casting blocks of the first stage; After the m casting blocks of the first stage meet the conditions for demoulding, the casting template is removed to proceed to the second stage of construction, and the space between each two adjacent casting blocks that have been cast is repeatedly constructed according to the steps of the first stage; In the second stage, the casting block solidifies and the casting template and the weighing scaffolding are removed.

2. The method for casting a suspension cylinder according to claim 1, characterized in that: The pouring template comprises an arc-shaped bottom plate, two arc-shaped baffles and two vertical baffles, the two arc-shaped baffles and the two vertical baffles are both arranged on the upper surface of the arc-shaped bottom plate, the two arc-shaped baffles are arranged opposite to each other, and the two vertical baffles are arranged opposite to each other and are both located between the two arc-shaped baffles; The arc-shaped bottom plate, the two arc-shaped baffles and the two vertical baffles are jointly arranged to form a casting space, and the casting material is used to be cast in the casting space.

3. The method for casting a suspension cylinder according to claim 2, characterized in that: Two fastening screws are arranged on the outer sides of the two vertical baffles, and the two fastening screws are both passed through the two arc-shaped baffles. The two fastening screws are arranged at intervals, and each fastening screw is fixed to the two arc-shaped baffles by two nuts, and the two nuts are both screwed on the fastening screws, and the two nuts are respectively located on the side of the two arc-shaped baffles away from the vertical baffle.

4. The method for casting a suspension cylinder according to claim 1, characterized in that: The inner arc length of the casting block ranges from 550 mm to 650 mm.

5. The method for casting a suspension cylinder according to claim 3, characterized in that: The weighing scaffold comprises a sliding assembly, a fixed assembly and a supporting assembly, wherein the sliding assembly and the fixed assembly are both arranged on the supporting assembly, and the sliding assembly and the fixed assembly are arranged spaced from top to bottom along the extending direction of the supporting assembly, and the sliding assembly can slide relative to the supporting assembly; The casting template is located on the sliding assembly.

6. The method for casting a suspension cylinder according to claim 5, characterized in that: The step of assembling each casting template and placing it on a weighing scaffold comprises: Select a location as the starting point to set up the first set of weighing scaffolding and pouring formwork assembly of the first stage; The assembly of the remaining m-1 groups of weighing scaffolding and casting formwork repeats the construction process of the first group of weighing scaffolding and casting formwork in a clockwise direction until the installation of the m casting formworks in the first stage is completed.

7. The method for casting a suspension cylinder according to claim 6, characterized in that: The assembly of the first set of weighing scaffolding and pouring formwork in the first stage at a selected location as a starting point includes: The weighing scaffold is preliminarily assembled into a tic-tac-toe frame using steel pipes, the arc bottom plate is placed on the sliding assembly of the weighing scaffold, the two arc baffles and two vertical baffles are placed on the arc bottom plate, and the four fastening screws are fixed to the two arc baffles using nuts; According to the height of the vertical baffle, the sliding assembly of the casting template and the weighing scaffolding is moved upward as a whole until the top of the vertical baffle is close to the steel plate at the bottom of the suspension cylinder, the casting template is fixed with wooden planks and auxiliary steel pipes are set to support the vertical steel pipes of the weighing scaffolding.

8. The method for casting a suspension cylinder according to claim 1, characterized in that: The pouring of the pouring material into the m pouring templates to complete the m pouring blocks of the first stage includes: Pour the casting material into m casting templates, use a vibrator to fully vibrate the casting material so that the casting material is evenly distributed inside the casting template, and smooth the upper surface of the casting block after pouring of each casting template.

9. The method for casting a suspension cylinder according to claim 1, characterized in that: After each of the casting templates is assembled and placed on a weighing scaffold, and before pouring the casting material into the m casting templates to complete the m casting blocks of the first stage, the method further includes: Clean the debris in the casting template and apply lubricating oil on the inner wall of the casting template.

10. The method for casting a suspension cylinder according to claim 2, characterized in that: During the second stage of construction, when assembling each of the casting forms, the two vertical baffles in each of the casting forms are removed, and two adjacent casting blocks that have been cast are used to replace the two vertical baffles.

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