CN114800846A

CN114800846A - Preparation method of ultra-wide ALC (alcohol-ceramic) board

Info

Publication number: CN114800846A
Application number: CN202210460899.XA
Authority: CN
Inventors: 孙小曦; 马瑶; 王浩
Original assignee: NANJING ASHAI NEW BUILDING MATERIALS CO Ltd
Current assignee: NANJING ASHAI NEW BUILDING MATERIALS CO Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-29
Anticipated expiration: 2042-04-28
Also published as: CN114800846B

Abstract

The application discloses a preparation method of an ultra-wide ALC plate, which comprises the following steps: hanging the prepared reinforcement cages on a connecting piece on a steel chisel, wherein the reinforcement cages are distributed along the height direction of the steel chisel; feeding the steel rod and the reinforcement cage into a mold; injecting the slurry into a die with the steel bar mesh installed for foaming and pre-curing to form a blank body; after the strength of the pre-cured blank body meets the set requirement, pulling out the steel chisel from the blank body, and demoulding; cutting the blank into a plurality of blanks, wherein each blank comprises a reinforcement cage; and feeding the cut billets into a steam curing kettle for steam curing. The steel bar net piece and the bottom surface of the die are arranged in parallel, and are transversely cut during cutting, so that the width of each ALC plate is changed from the height of the original blank into the width of the blank, the width of the ALC plate can be effectively improved, and meanwhile, the ALC plate can be realized without greatly changing the original production line and the original die.

Description

Preparation method of ultra-wide ALC (alcohol-ceramic) board

Technical Field

The application relates to the field of autoclaved aerated concrete preparation, in particular to a preparation method of an ultra-wide ALC plate.

Background

At present, a novel wall material mainly made of autoclaved aerated concrete (ALC) products is rapidly developed, replaces the traditional wall materials such as clay bricks, solid bricks and the like, and becomes a main component of the wall material. Compared with the traditional wall material, the autoclaved aerated concrete (ALC) product has the characteristics of light weight, excellent heat preservation performance and the like, so that the autoclaved aerated concrete (ALC) product is widely used in various buildings.

Due to economic development, at present, the number of multi-storey and high-rise buildings is gradually increased, the demand on the A wide ALC plate is increased, the number of splicing seams and intersection seams of the wide ALC plate after installation is small, water leakage is not easy to generate, the industrial installation efficiency is high, and the integrity of the outer facade of the building is strong.

Currently, an autoclaved aerated concrete (ALC) slab is prepared by vertically placing a steel bar mesh plate into a mould, namely vertically placing a steel bar mesh plate and the bottom surface of the mould, forming a blank body by grouting and pre-curing foaming in the mould, then cutting the blank body into a plurality of blank bodies along the vertical direction, and performing steam curing on the blank body to form the ALC slab. The width of the ALC board prepared in this way is the height of the blank formed by pre-curing and foaming in the original mold, and as for the current equipment process, the maximum height of the blank in the current mold can be about 600mm, that is, the maximum width of the ALC board after cutting is 600mm, and if the height of the blank formed by pre-curing and foaming is to be greatly increased, the blank is easy to deform and even collapse.

Disclosure of Invention

In order to increase the width of the prepared ALC board, the application provides a preparation method of the ultra-wide ALC board.

The application provides a preparation method of an ultra-wide ALC board, which adopts the following technical scheme:

a preparation method of an ultra-wide ALC board comprises the following steps:

s1, hanging the prepared reinforcement cages on connecting pieces on the steel chisel, wherein each reinforcement cage comprises two reinforcement meshes which are distributed in parallel, the two reinforcement meshes are connected through supporting ribs, the reinforcement meshes are distributed in parallel with the bottom surface of the mold, and the reinforcement cages are distributed along the height direction of the steel chisel;

s2, feeding the steel rod and the reinforcement cage into a mold;

s3, injecting the prepared slurry into a mould provided with the steel bar mesh for foaming and pre-curing to form a blank body;

s4, after the strength of the pre-cured blank meets the set requirement, pulling out the steel chisel from the blank, and demoulding;

s5, cutting the blank into a plurality of blanks, wherein each blank comprises a steel reinforcement cage;

and S6, feeding the cut briquettes into a steam curing kettle for steam curing.

By the technical scheme, the width of each ALC plate is changed from the height of the original blank into the width of the blank by arranging the reinforcing mesh in parallel with the bottom surface of the die and transversely cutting the steel mesh during cutting, so that the width of the ALC plate can be effectively increased, and the ALC plate can be manufactured without greatly changing the original production line and the die; simultaneously, the reinforcing steel bar meshes are connected through the supporting ribs, so that the width of the ALC plate can be increased, and the strength of the ALC plate can be ensured.

In a specific embodiment, in step S4, the drill steel is pulled out of the connecting member by rotating the drill steel to disconnect the drill steel from the connecting member and then moving the drill steel away from the bottom of the mold to pull the drill steel out of the blank.

Through above-mentioned technical scheme, rotate through the drill rod and be connected with the connecting piece is thrown off, the drill rod is extracted to keeping away from the action of mould direction, does not have the effort this moment between drill rod and the connecting piece, extracts the in-process at the drill rod, just can not drive the reinforcing bar net piece to the direction motion of keeping away from the mould bottom to can not destroy the bond stress between reinforcing bar net piece and the body, guarantee the reinforcing bar net piece remain throughout and the thick liquids between the in close contact with, and then guaranteed the intensity of ALC board.

In a particular embodiment, the rotation of the drill rods results in two groups of drill rods, one group of drill rods rotating clockwise and the other group of drill rods rotating counterclockwise.

Through above-mentioned technical scheme, divide into two sets ofly with the drill rod, one of them group drill rod clockwise rotation, another group drill rod anticlockwise rotation for the drill rod drives connecting piece and reinforcing bar net piece pivoted trend when rotating and is offset each other, has avoided reinforcing bar net piece to destroy the bond stress of reinforcing bar net piece and blank when the drill rod rotates.

In a specific implementation mode, a rotating rod is arranged at one end of the drill rod, which is far away from the die, and when the drill rod rotates, the rotating rod is pushed to rotate by a driving mechanism.

Through the technical scheme, the rotating rod is arranged at one end, far away from the die, of the steel chisel, the rotating rod can be pushed by the driving mechanism to drive the steel chisel to rotate, so that the better automation degree is kept in the production process, and the production efficiency is improved.

In a specific implementation mode, the connecting piece comprises a connecting ring, a connecting hole is formed in the middle of the connecting ring, an arc-shaped convex block is further arranged on the inner wall of the connecting ring and is used for being abutted against the outer peripheral surface of the steel chisel; the circumferential surface of the steel chisel is provided with a groove.

By the technical scheme, when the reinforcing mesh needs to be hung on the steel rod, the steel rod and the connecting piece are tightly abutted against the circumferential surface of the steel rod through the arc-shaped convex block, so that the steel rod and the connecting piece can be tightly connected; when the drill rod needs to be pulled out, the drill rod rotates, so that the groove in the drill rod rotates to the position corresponding to the arc-shaped convex block, the arc-shaped convex block falls into the groove, and the drill rod is disconnected from the connecting piece.

In a specific embodiment, the connecting ring comprises a first snap ring and a second snap ring, and the first snap ring and the second snap ring are connected through a snap.

Through the technical scheme, the connecting ring is connected in a buckling mode through the first clamping ring and the second clamping ring, so that the connecting ring of the connecting piece can be tightly attached to the steel drill.

In a particularly practical embodiment, the temperature for precuring the green body is 50-60 ℃.

Through the pre-curing temperature, the blank can be ensured to have better foaming pre-curing.

In a specific embodiment, the temperature of steam curing in the steam curing kettle is more than 200 ℃.

By adopting the technical scheme, the blank can be steamed and cured at a high temperature of more than 200 ℃ in the autoclave, so that better strength can be obtained.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the method has the advantages that the reinforcing mesh is arranged in parallel with the bottom surface of the die, and the cutting is performed transversely during the cutting, so that the width of each ALC plate is changed from the height of the original blank into the width of the blank, the width of the ALC plate can be effectively increased, and meanwhile, the method can be realized without greatly changing the original production line and the original die; simultaneously, the reinforcing steel bar meshes are connected through the supporting ribs, so that the width of the ALC plate can be increased, and the strength of the ALC plate can be ensured.

2. Rotate through the drill rod and be connected with the connecting piece is thrown off, the drill rod is extracted to keeping away from the action of mould direction, does not have the effort between drill rod and the connecting piece this moment, extracts the in-process at the drill rod, just can not drive the reinforcing bar net piece to the direction motion of keeping away from the mould bottom to can not destroy the bond stress between reinforcing bar net piece and the body, guarantee the reinforcing bar net piece remain throughout and the pulp between the in close contact with, and then guaranteed the intensity of ALC board.

3. Divide into two sets ofly with the drill rod, one of them group drill rod clockwise rotation, another group drill rod anticlockwise rotation for the drill rod drives connecting piece and reinforcing bar net piece pivoted trend when rotating and is offset each other, has avoided reinforcing bar net piece to destroy the bond stress of reinforcing bar net piece and base body when the drill rod rotates.

Drawings

Fig. 1 is a schematic view showing the connection of a reinforcement cage and a steel chisel in embodiment 1 of the present application.

FIG. 2 is a schematic structural view of a drill steel and a connecting member according to example 1 of the present application.

Fig. 3 is a schematic structural diagram showing that a reinforcement cage is placed in a mold in embodiment 1 of the present application.

Fig. 4 is a schematic structural view of the cutting direction of the body blank in example 1 of the present application.

FIG. 5 is a distribution diagram of the drill steel of example 2 of the present application.

FIG. 6 is a schematic view showing the disconnection of the drill steel from the connector in example 3 of the present application.

FIG. 7 is a schematic structural view of a drill steel and a connecting member according to example 3 of the present application.

Fig. 8 is an enlarged view of a portion a of fig. 7 of the present application.

Reference numerals: 1. a reinforcement cage; 2. steel chisel; 3. a connecting member; 4. a push rod; 5. a drill rod frame; 6. a mold; 7. a blank body; 11. reinforcing mesh sheets; 21. a groove; 22. a limiting part; 23. rotating the rod; 31. a connecting ring; 32. connecting holes; 33. a support arm; 34. hooking; 35. an arc-shaped bump; 71. and (5) briquetting.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example 1:

the embodiment discloses a preparation method of an ultra-wide ALC plate, which comprises the following steps:

s1, referring to fig. 1 to 3, processing the steel bar into the required steel bar mesh 11 by straightening, cutting, welding, and anti-rust treatment according to the reinforcement rule, and hanging the prepared steel bar mesh 11 on the connecting member 3 on the steel bar 2, that is, the steel bar mesh 11 is parallel to the bottom surface of the mold. The steel chisel 2 is installed on the steel chisel frame 5, and each reinforcing bar net piece 11 becomes upper and lower distribution, that is to say, distribute from top to bottom along the direction of height of steel chisel 2 to adopt brace rod 12 to carry out the ligature between two reinforcing bar net pieces 11, form steel reinforcement cage 1, also be in the direction of height of steel chisel 2, for example first reinforcing bar net piece 11 and second reinforcing bar net piece 11 become a steel reinforcement cage 1 through brace rod 12 ligature, and third reinforcing bar net piece 11 and fourth reinforcing bar net piece 11 become a steel reinforcement cage 1 through brace rod 12 ligature.

Each connector 3 comprises a connecting ring 31, two ends of the connecting ring 31 are respectively connected with a supporting arm 33, the center of the connecting ring 31 is provided with a connecting hole 32, one end of each supporting arm 33 is connected with the connecting ring 31, and the other end of each supporting arm 33 is provided with a hook 34. The steel chisel 2 is arranged in the connecting hole 32 in a penetrating way, and the steel chisel 4 is in interference fit with the connecting hole 32, so that the steel chisel 2 and the connecting hole 32 can be tightly connected, and the connecting piece 3 is tightly fixed on the steel chisel 2.

The steel mesh sheet 11 is fixed by the hook 34 on the connecting piece 3, and the steel mesh sheet 11 can be clamped by the hook 34. In this embodiment, each reinforcing mesh 11 is fixed by 3 connecting members 3 in the length direction and the width direction.

S2, the drill rod frame 5 is driven to move through the transmission mechanism, the drill rod frame 5 moves to drive the drill rod 2 and the reinforcement cage 1 and the connecting piece 3 fixed on the drill rod 2 to move together, the drill rod 2, the reinforcement cage 1 and the connecting piece 3 are sent into the mold 6 together, the mold 6 is an opening on the top surface, and the periphery of the mold is provided with a cuboid structure with side surfaces.

S3, injecting the prepared slurry into the mold 6 provided with the reinforcement cage 1, and uniformly paving the slurry in the mold 6 through tamping vibration so as to form a blank 7; pre-curing is carried out, the green body 7 in the die 6 is pre-cured, the pre-curing temperature is between 50 and 60 ℃, and the green body 7 is foamed and pre-cured at the temperature.

S4, after the strength of the blank 7 after precuring meets the set requirement, the lifting mechanism drives the steel chisel frame 5 to move the steel chisel 2 in the direction away from the bottom surface of the die 6, namely, drives the steel chisel 2 to move upwards to pull out the steel chisel, pulls out the steel chisel 2 from the connecting hole 32 on the connecting piece 3, and finally separates the steel chisel 2 from the blank 7. The die 6 is then fed to the cutting line, demolded, the four sides of the die 6 are opened, and the blank 7 is fed to the cutting line.

S5, referring to fig. 4, the billet 7 is sent to a cutting line for cutting, the cutting line is arranged in parallel with the bottom surface of the die when cutting, and the billet 7 is cut into a plurality of billets 71 with the same size by using a steel reinforcement cage 1 distributed in one cut billet 71 as a standard.

And S6, after cutting, conveying the cut briquettes 71 into a steam curing kettle through a conveying mechanism for high-temperature steam curing, wherein the temperature in the steam curing kettle is more than 200 ℃, and the briquettes 71 are steamed and cured into the ultra-wide ALC plate.

And S7, marking the ultra-wide ALC plate which is formed after the plate is taken out of the kettle after the steam curing is finished, and delivering the plate out of the factory after the quality inspection and packaging.

Example 2:

the rest of the present embodiment is the same as embodiment 1, except that when the blank 7 in one die 6 is cut, the thickness of each cut piece 71 is different, so that when the blank 7 is cut, the height of the cutting line of the cutting machine needs to be adjusted to prevent the cutting line from cutting onto the reinforcement cage 1.

In order to facilitate accurate adjustment of the cutting line, the length of the steel rod 2 is adjusted in the embodiment, the steel reinforcement cages 1 of all layers are fixedly installed by adopting the single steel rod 2, referring to fig. 5, the steel rod 2 used for fixing the first layer of the steel reinforcement cage 1 does not penetrate through the second layer of the steel reinforcement cage 1, the steel rod 2 used for fixing the second layer of the steel reinforcement cage 1 does not penetrate through the third layer of the steel reinforcement cage 1, so that the lengths of the steel rods 2 used for fixing the first layer of the steel reinforcement cage, the second layer of the steel reinforcement cage and the third layer of the steel reinforcement cage 1 are different, and the positions of the cutting line of the cutting device can be accurately adjusted through the lengths of the different steel rods 2.

Example 3:

in step S4 of embodiment 1, when the steel rod 2 is pulled out from the blank 7, because the steel rod 2 and the connecting member 3 are very tightly connected, the steel rod 2 cannot easily separate from the connecting hole 32 of the connecting member 3, and therefore, when the steel rod 2 is to separate from the connecting hole 32, the blank 7 is required to apply a reaction force to the connecting member 3, at this time, the blank 7 is just pre-cured and has a low strength, and the connecting member 3 and the reinforcement cage 1 are connected together, so that during the pulling-out process of the steel rod 2, the connecting member 3 and the reinforcement cage 1 tend to move together, and at this time, the blank 7 applies a reaction force to the reinforcement mesh 11 and the connecting member 3 to prevent the steel rod 2 from driving the connecting member 3 and the reinforcement cage 1 to move, and at this time, the reinforcement cage 1 and the blank 7 inevitably loosen, thereby reducing the bond strength between the blank 7 and the reinforcement cage 1, resulting in a reduction in the strength of the ultra-wide ALC board.

In this embodiment, in order to prevent the process of pulling out the borer, it is not hard up to appear between steel reinforcement cage 1 and connecting piece 3 and the body 7, and this embodiment discloses a preparation method of super wide ALC board, includes the following steps:

s1, referring to fig. 6 to 8, processing the applicable steel bars into the required steel bar mesh 11 through procedures of straightening, cutting, welding, rust prevention and the like according to the reinforcement rule, and vertically hanging the prepared steel bar mesh 11 on the connecting piece 3 on the steel chisel 2.

In this embodiment, the drill rod 2 is mounted on the drill rod frame 5, in this embodiment, the drill rod 2 is inserted into the mounting hole of the drill rod frame 5, two grooves 21 are provided on the circumferential surface of the drill rod 2 and distributed along the length direction of the drill rod 2, a limiting portion 22 is provided on the side of the drill rod 2 away from the bottom surface of the mold 6, and the drill rod 2 is mounted on the drill rod frame 5 through the limiting portion 22. A rotating rod 23 is further connected to the limiting portion 22 of the drill rod 2, and one end of the rotating rod 23 extends out of the drill rod frame 5.

The connecting piece 3 comprises a connecting ring 31, a connecting hole 32 is formed in the middle of the connecting ring 31, an arc-shaped convex block 35 is further arranged on the upper inner wall of the connecting ring 31, when the steel chisel 2 is connected with the connecting piece 3, the steel chisel 2 is arranged in the connecting hole 32 of the connecting piece 3, and the arc-shaped convex block 35 is used for being abutted to the outer peripheral face of the steel chisel 2. The circumferential surface of the steel chisel 2 is provided with a groove 21, the groove 21 is distributed along the height direction of the steel chisel 2, and the width of the groove 21 is larger than that of the arc-shaped projection 35.

In order to ensure that the connection between the connecting member 3 and the steel chisel 2 is tight, and when the steel reinforcement cage 1 is hung on the connecting member 3, the connecting member 3 and the steel chisel 2 do not slide relatively, in this embodiment, the connecting ring 31 is configured in a manner that the first snap ring 311 and the second snap ring 312 are clamped, so that the tight contact between the arc-shaped protrusion 35 on the connecting ring 31 and the outer peripheral surface of the steel chisel 2 can be ensured.

Two ends of the first snap ring 311 of the connection ring 31 are respectively connected with a support arm 33, one end of the support arm 33 is connected with the first snap ring 311, and the other end is provided with a hook 34.

S2, the drill rod frame 5 is driven to move through the transmission mechanism, the drill rod frame 5 moves to drive the drill rod 2 and the reinforcement cage 1 fixed on the drill rod 2 to move together, the drill rod 2 and the reinforcement cage 1 are sent into the mold 6 together, the mold 6 is an opening on the top surface, and the periphery of the mold is provided with a cuboid structure with side faces.

S3, injecting the prepared slurry into the mould 6 provided with the reinforcement cage, and uniformly paving the slurry in the mould 6 through tamping vibration so as to form a blank 7; pre-curing is carried out, the green body 7 in the die 6 is pre-cured, the pre-curing temperature is 50-60 ℃, and the slurry can be fully foamed at the temperature, so that the green body 7 has certain strength.

S4, pulling out the drill rod and demolding: after the strength of the precured blank 7 reaches a set requirement, the driving mechanism drives the driving push rod 4 to contact with the rotating rod 23, and the push rod 4 acts to drive the rotating rod 23 to rotate. The rotating rod 23 rotates to drive the drill rod 2 to rotate, so that the groove 21 of the drill rod 2 rotates to the arc-shaped bump 35 on the connecting piece 3, the arc-shaped bump 35 falls into the groove 21 because the width of the arc-shaped bump 35 is smaller than that of the groove 21, and the drill rod 2 and the connecting piece 3 are disconnected.

When actuating mechanism drive push rod 4 promoted dwang 23 and rotates, be divided into two sets ofly with drill rod 2, one of them is a set of and promotes dwang 23 through push rod 4 and drive drill rod 2 clockwise rotation, another group is that it drives dwang 23 through push rod 4 and drive drill rod 2 anticlockwise rotation, make drill rod 2 drive connecting piece 3 and reinforcing bar net piece 11 pivoted trend when rotating offset each other, avoided reinforcing bar net piece 11 to destroy reinforcing bar net piece 11 and body 7's bond strength when the drill rod rotates.

Referring to fig. 6, 3 steel bar frames 5 are arranged along the length direction of the die, and three steel bars 2 are distributed on each steel bar frame 5 along the width direction of the die 6, wherein the steel bars 2 arranged on the steel bar frame 5 at one end of the length direction of the die adopt counterclockwise rotation, the steel bars 2 on the steel bar frame 5 at the other end of the die plant adopt clockwise rotation, and the steel bars 2 on the middle steel bar frame 5 adopt counterclockwise rotation.

The rotation of each drill rod 2 is synchronously carried out, and after the drill rods 2 rotate to be disconnected from the connecting piece 3, the driving mechanism drives the push rod 4 to return, so that the push rod 4 is separated from being in contact with the rotating rod 23.

Then the lifting mechanism drives the steel rod 2 to move towards the direction far away from the bottom surface of the die 6, namely the steel rod 2 is driven to be pulled upwards, so that the steel rod 2 is separated from the blank 7. During the pulling on the drill steel 2, the arc-shaped projection 35 of the connecting piece 3 slides in the groove 21 of the drill steel 2.

And after the steel chisel 2 is separated from the blank 7, sending the die 6 to a cutting production line, demolding, opening four side surfaces of the die 6, and sending the blank 7 to the cutting production line.

S5, conveying the blank 7 into a cutting production line for cutting, wherein the cutting line is arranged in parallel with the bottom surface of the die during cutting, and when cutting, cutting the blank 7 into a plurality of blanks 71 with the same size by taking a reinforcement cage 1 distributed in one cut blank 71 as a standard;

and S6, after cutting, feeding the cut briquettes 71 into a steam curing kettle through a conveying mechanism for high-temperature steam curing, wherein the temperature in the steam curing kettle is more than 200 ℃, and the briquettes 71 are steamed and cured into the ultra-wide ALC plate.

The foregoing is directed to embodiments of the present invention, which are not limited thereto, but rather to other embodiments of the invention.

Claims

1. A preparation method of an ultra-wide ALC board is characterized by comprising the following steps:

s1, hanging the prepared reinforcement cages (1) on connecting pieces (3) on a steel chisel (2), wherein each reinforcement cage (1) comprises two reinforcement meshes (11) which are distributed in parallel, the two reinforcement meshes (11) are connected through supporting ribs (12), the reinforcement meshes (11) are distributed in parallel with the bottom surface of a mould (6), and the reinforcement cages (1) are distributed along the height direction of the steel chisel (2);

s2, feeding the steel chisel (2) and the reinforcement cage (1) into the mould (6);

s3, injecting the prepared slurry into a die (6) provided with the reinforcement cage (1) for foaming and pre-curing to form a blank body (7);

s4, after the strength of the pre-cured blank (7) meets the set requirement, pulling out the steel chisel (2) from the blank (7), and demoulding;

s5, cutting the blank (7), and cutting the blank (7) into a plurality of blanks (71), wherein each blank (71) comprises a reinforcement cage (1);

s6, feeding the cut compact (71) into a steam curing kettle for steam curing.

2. The method of making an ultra-wide ALC plate, as recited in claim 1, wherein: in step S4, when the drill steel (2) is pulled out from the connecting member (3), the drill steel (2) is rotated to disconnect the connecting member (3), and then the drill steel (2) is moved in a direction away from the bottom of the mold (6), so that the drill steel (2) is pulled out from the blank (7).

3. The method of making an ultra-wide ALC plate, as recited in claim 2, wherein: when the steel drill rods (2) rotate, the steel drill rods (2) are divided into two groups, wherein one group of steel drill rods (2) rotate clockwise, and the other group of steel drill rods (2) rotate anticlockwise.

4. The method of making an ultra-wide ALC plate, as recited in claim 3, wherein: a rotating rod (23) is arranged at one end, far away from the die (6), of the steel chisel (2), and when the steel chisel (2) rotates, the rotating rod (23) is pushed by a driving mechanism to rotate.

5. The method of making an ultra-wide ALC plate, as recited in claim 2, wherein: the connecting piece (3) comprises a connecting ring (31), a connecting hole (32) is formed in the middle of the connecting ring (31), an arc-shaped convex block (35) is further arranged on the inner wall of the connecting ring (31), and the arc-shaped convex block (35) is used for being abutted to the outer peripheral surface of the steel chisel (2); the circumferential surface of the steel chisel (2) is provided with a groove (21), and the width of the groove (21) is larger than that of the arc-shaped bump (35).

6. The method of making an ultra-wide ALC plate, as recited in claim 5, wherein: the connecting ring (31) comprises a first clamping ring (311) and a second clamping ring (312), and the first clamping ring (311) is connected with the second clamping ring (312) through a buckle.

7. The method of making an ultra-wide ALC plate, as recited in any of claims 1-6, wherein: the temperature for pre-curing the blank (7) is 50-60 ℃.

8. The method of making an ultra-wide ALC plate, as recited in any of claims 1-6, wherein: the temperature of steam curing in the steam curing kettle is more than 200 ℃.