CN112157365B - Method for assembling inner and outer arc frames of slab continuous casting fan-shaped section - Google Patents

Method for assembling inner and outer arc frames of slab continuous casting fan-shaped section Download PDF

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Publication number
CN112157365B
CN112157365B CN202011071588.1A CN202011071588A CN112157365B CN 112157365 B CN112157365 B CN 112157365B CN 202011071588 A CN202011071588 A CN 202011071588A CN 112157365 B CN112157365 B CN 112157365B
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positioning
main board
welding
block
seat
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CN112157365A (en
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仇晨
芮肯法
邱焱
周炜
张佩
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Changzhou Baoling Heavy and Industrial Machinery Co Ltd
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Changzhou Baoling Heavy and Industrial Machinery Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding

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Abstract

The invention discloses an assembly method of inner and outer arc frames of a slab continuous casting sector section, which comprises the following steps of 1, carrying out batch surfacing welding on seat blocks by adopting a robot; step 2, according to the position of the limiting part and the actual welding position of the seat block and the main board, a plurality of second marks are arranged on the welding platform along the length direction of the main board, a first positioning part for positioning the seat block is fixed at each second mark, and a first cushion block for supporting the main board to enable a space to be formed between the main board and the welding platform is fixed on the welding platform; step 3, placing the main board on the first cushion block, adjusting the main board to enable the wide edge of the main board to abut against the limiting part, enabling the main board to abut against the first positioning part and the seat block, and then welding the main board and the seat block; and 4, placing the main board on the second positioning part, placing the head frame on the second cushion block, and welding the head frame and the main board. The invention has the advantages of simplifying the welding assembly process flow, improving the assembly efficiency and improving the assembly precision before welding.

Description

Method for assembling inner and outer arc frames of slab continuous casting fan-shaped section
Technical Field
The invention relates to an assembly method of inner and outer arc frames of a slab continuous casting sector section.
Background
The slab segment frame is an important component of continuous casting equipment, is arranged behind a crystallizer of a continuous casting machine, is a key component of the continuous casting machine for supporting and guiding a slab in a solidification process, and is used for cooling the slab and assisting in slab forming in a transportation process. The sector section is totally divided into a bending section, an arc section, a straightening section and a horizontal section, and each sector section is divided into an inner arc frame, an outer arc frame and a pinch roll frame. The inner arc frame and the outer arc frame of the sector section have the structural characteristics that: usually consists of 2 head frames with a shaft head and 6-8 main plates supported in the middle of the head frames, the main plates have a specific angle, and each main plate generally has 4 or more seat blocks. The frame angle is complicated, the structure is single thin, the welding quantity is large, and the requirement on the position of the seat block is high. The existing installation method of the inner arc frame and the outer arc frame of the sector section comprises the following steps:
firstly welding the head frame, then marking and positioning (namely, installing the position of the main board) the main board on the head frame, hoisting the main board to a corresponding position through hoisting equipment for welding, fixedly welding the seat block and the main board, machining the surface to be subjected to surfacing welding on the seat block, and finally performing manual surfacing welding and tempering on the seat block. The above method has the following defects:
1, welding a head frame, welding a main plate and a head, welding seat blocks, wherein the seat block butt welding needs to be carried out step by step, and the welding period is longer;
2, because the seat blocks are more in number and distributed on different main boards, when the seat blocks are welded with the main boards, the seat blocks need to be turned over and welded for many times, and the welding space is narrow, the working hours are longer, the efficiency of the welding process is lower, and the quality of welding seams is not easy to guarantee;
3, because the processing of the surfacing surface on the seat block is carried out after the assembly and welding of the fan-shaped section frame are finished, the processing of the surfacing surface on the seat block needs to be carried out on a large machine tool, which has long time consumption and high cost;
4, because the volume of the main plate and the head frame after welding is large, in the prior art, overlaying welding on the seat block is manually carried out, so that overlaying welding efficiency is low, and quality is unstable.
Disclosure of Invention
The invention provides an assembling method of inner and outer arc frames of a slab continuous casting sector section, which improves the assembling efficiency and quality.
The method for assembling the inner arc frame and the outer arc frame of the slab continuous casting fan-shaped section comprises the following steps:
step 1, carrying out batch surfacing on seat blocks by adopting a robot;
step 2, at least one first mark is arranged on the welding platform along the width direction of the main board, and a limiting component used for positioning the end part of the main board is fixed at the first mark; according to the position of the limiting part and the actual welding position of the seat block and the main board, a plurality of second marks are arranged on the welding platform along the length direction of the main board, a first positioning part used for positioning the seat block is fixed at each second mark, and a first cushion block used for supporting the main board to enable a space to be formed between the main board and the welding platform is fixed on the welding platform;
step 3, placing the main board on the first cushion block, adjusting the main board to enable the wide edge of the main board to abut against the limiting part, enabling the main board to abut against the first positioning part and the seat block, and then welding the main board and the seat block; repeating the step 3, and welding a plurality of seat blocks on each main board;
and 4, according to the distance between two adjacent main boards, arranging third marks at intervals on the welding platform along the width direction of the head frame, fixing a second positioning component for positioning and supporting the main boards at each third mark, fixing a second cushion block for supporting the head frame on the welding platform, placing the main boards on the second positioning components, placing the head frame on the second cushion block, and welding the head frame and the main boards.
The invention has the advantages that:
1. according to the invention, the welding process is changed, the welding of the head frame and the main board is easily realized, the welding period of the whole sector section is shortened, and the assembly efficiency is improved.
2. According to the invention, seat blocks are subjected to batch surfacing by adopting a welding robot, seat blocks in batches in a single small-batch fan-shaped section frame are extracted, and batch surfacing is carried out, so that manual surfacing after the frame is totally spliced is replaced, and the surfacing efficiency and the stability of surfacing quality are greatly improved.
3. According to the invention, the relative size of the seat block and the main board is ensured by utilizing the limiting effect of the limiting component on the main board on the welding platform and the positioning effect of the first positioning component on the main board and the seat block and the supporting effect of the first cushion block, the batch welding working efficiency of the main board and the seat block is improved, and the welding difficulty caused by narrow welding space when the seat block is finally welded on the frame is avoided.
4. The invention ensures the relative size of the main board and the head frame by using the second positioning part and the second cushion block, reduces the splicing difficulty and simplifies the manual operation.
According to the invention, through the adjustment of the welding process and the assistance of the tool, the welding assembly process flow is simplified, the assembly efficiency is improved, the assembly precision before welding is improved by adopting a tool positioning mode, the quality of the inner arc frame and the outer arc frame of the sector section can be better ensured, and good economic value is obtained.
Drawings
FIG. 1 is a schematic representation of a block of the present invention prior to weld deposition;
FIG. 2 is a cross-sectional view of the seat block after build-up welding;
FIG. 3 is a front view of the seat block assembled prior to welding with the main plate;
FIG. 4 is a perspective view of the seat block assembled prior to welding with the main plate;
FIG. 5 is a schematic structural view of a first positioning member;
FIG. 6 is an assembly view of the main plate with the seat block welded thereto and the head frame before welding;
FIG. 7 is a schematic view of a second positioning member;
FIG. 8 is a schematic view of a second head block;
FIG. 9 is a schematic view of the main board and the head frame after being welded;
a is a main board, B is a head frame, 1 is a seat block, 1a is a groove, 1B is a concave limit, 1c is a first side face, 1d is a second side face, 1e is a surfacing layer, 2 is a welding platform, 3 is a limiting part, 4 is a first positioning part, 40 is a support, 40a is a first end face, 40B is an assembly area, 41 is a first positioning step, 42 is a second positioning step, 43 is a third positioning step, 44 is a tool withdrawal groove, 45 is a positioning block, 5 is a first cushion block, 6 is a second positioning part, and 7 is a second cushion block.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 9.
The invention relates to an assembly method of inner and outer arc frames of a slab continuous casting fan-shaped section, which comprises the following steps:
step 1, processing a surfacing part on a seat block 1, and carrying out batch surfacing on the seat block 1 by adopting a robot. The position of overlaying is a groove 1a machined on the seat block 1, a concave limit 1b recessed towards the outer side of the seat block 1 is arranged between the groove wall surface and the groove bottom of the groove 1a, the depth of the concave limit 1b is 3.2-4mm, the depth of the concave limit 1b is preferably 3.5mm, the height of the concave limit 1b is 6.5-7.5mm, and the height of the concave limit 1b is preferably 7 mm. The bead welding wire is preferably made of ferritic stainless steel, and is deposited from the bottom of the groove 1 a. The surfacing layer 1e at least fills a part of the concave limit 1b, the surfacing layer 1e is composed of a deepening layer, an effective layer and a thickening layer, the effective layer is located between the deepening layer and the thickening layer, the thickening layer is exposed in the air, a machining allowance of 2-3mm is reserved after surfacing, and the machining allowance preferably adopts 2 mm.
Step 2, at least one first mark is arranged on the welding platform 2 along the width direction of the main board A, and a limiting component 3 for positioning the end part of the main board is fixed at the first mark; according to the position of the limiting component 3 and the actual welding position of the seat block 1 and the main plate A, a plurality of second marks are arranged on the welding platform 2 along the length direction of the main plate A, a first positioning component 4 used for positioning the seat block 1 is fixed at each second mark, and a first cushion block 5 used for supporting the main plate A to enable a space to be formed between the main plate A and the welding platform 2 is fixed on the welding platform 2.
The fixing of the limiting component 3 and the welding platform 2 is preferentially fixed in a spot welding mode, the fixing of the first positioning component 4 and the welding platform 2 is preferentially fixed in a spot welding mode, and the fixing of the first cushion block 5 and the welding platform 2 is preferentially fixed in a spot welding mode.
The first positioning component 4 includes a support 40, a first positioning step 41 abutting against the first side surface 1c of the seat block 1, a second positioning step 42 abutting against the second side surface 1d of the seat block 1, and a third positioning step 43 abutting against the long side of the main board a, the first positioning step 41 is disposed on the first end surface 40a of the support 40, the second positioning step 42 is disposed on the first end surface 40a of the support 40, one end of the third positioning step 43 is fixed to the second positioning step 42, and an assembly area 40b matched with the seat block 1 is formed among the first end surface 40a, the first positioning step 41, and the second positioning step 42.
When in use, the seat block 1 is matched with the assembling area 40b, so that the first side surface 1c of the seat block 1 is abutted against the side wall surface of the first positioning step 41, and the second side surface 1d of the seat block 1 is abutted against the side wall surface of the second positioning step 42. So that the seat block 1 obtains the positioning of the first positioning member 4.
A tool withdrawal groove 44 is reserved between the first positioning step 41 and the second positioning step 42, so that the cutting tool can be conveniently withdrawn during machining through the tool withdrawal groove 44, and the first positioning step 41 and the second positioning step 42 are prevented from being damaged by the machining tool, so that the positioning accuracy of the seat block 1 is reduced.
The first positioning member 4 further includes a positioning block 45 abutting against the second side surface 1d of the seat block 1, the positioning block 45 is fixed to the third positioning step 43, and the positioning block 45 is disposed in the middle or on the upper portion of the side wall of the third positioning step 43, so that the seat block 1 obtains positioning of the positioning block 45 in addition to obtaining both-surface abutting of the first positioning step 41 and the second positioning step 42, thereby stabilizing positioning of the seat block 1.
And step 3, placing the main board A on the first cushion block 5, adjusting the main board A to enable the wide edge of the main board A to be abutted against the limiting part 3, and welding the main board A and the seat block 1 after the main board A is abutted against the first positioning part 4 and the seat block 1. Repeating the step 3, and welding a plurality of seat blocks 1 on each main board A.
Because the position of first locating part 4 on welded platform 2 is fixed, the position of assembly seat piece 1 on first locating part 4 is also fixed, consequently, to weld seat piece 1 on every mainboard A, only need at every turn with seat piece 1 cooperation on first locating part 4 on the assembly region 40b can to the operation that sets up the sign when not needing to weld each mainboard A with seat piece 1, be favorable to saving the time of assembly like this, raise the efficiency. Compared with the prior art, the method has the advantages of large welding space, no need of turning the main plate, short working hours, high welding efficiency and good welding seam quality in the welding process of the main plate A and the seat block 1.
And 4, according to the distance between two adjacent main boards A, setting third marks at intervals on the welding platform 2 along the width direction of the head frame B, fixing a second positioning part 6 for positioning and supporting the main boards A at each third mark, fixing a second cushion block 7 for supporting the head frame B on the welding platform 2, placing the main boards A on the second positioning parts 6, placing the head frame B on the second cushion block 7, and welding the head frame B with the main boards A.
The second positioning component 6 and the welding platform 2 are fixed preferentially in a spot welding mode, and the second cushion block 7 and the welding platform 2 are fixed preferentially in a spot welding mode.
The second positioning component 6 is provided with a notch, the main board A is in clearance fit with the notch, the second cushion block 7 is composed of an L-shaped cushion block and a rectangular cushion block, the L-shaped cushion block and the rectangular cushion block respectively support different components of the head frame B, and the L-shaped cushion block can limit the movement of the head frame B, has a positioning effect and is used for improving the assembly precision.
According to the invention, the seat block 1 is welded with the main board A, the main board A is supported and positioned by the second positioning component 6, and the head frame B is supported by the second cushion block 7, so that when each main board A welded with the seat block 1 is welded with the head frame B, compared with the prior art, when the main board A is welded with the head frame B, the welding process has the advantages of large welding space, short welding working hours, high efficiency and good welding seam quality.
And finally, tempering the whole frame formed by welding the main board A and the head frame B.
The above description is only an exemplary embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any person skilled in the art should understand that they can make equivalent changes and modifications without departing from the concept and principle of the present invention.

Claims (3)

1. The method for assembling the inner arc frame and the outer arc frame of the slab continuous casting fan-shaped section is characterized by comprising the following steps of:
step 1, carrying out batch surfacing on seat blocks (1) by using a robot;
step 2, at least one first mark is arranged on the welding platform (2) along the width direction of the main board (A), and a limiting component (3) used for positioning the end part of the main board is fixed at the first mark; according to the position of the limiting component (3) and the actual welding position of the seat block (1) and the main board (A), a plurality of second marks are arranged on the welding platform (2) along the length direction of the main board (A), a first positioning component (4) used for positioning the seat block (1) is fixed at each second mark, and a first cushion block (5) used for supporting the main board (A) to enable a space to be formed between the main board (A) and the welding platform (2) is fixed on the welding platform (2);
step 3, placing the main board (A) on the first cushion block (5), adjusting the main board (A) to enable the wide edge of the main board (A) to be abutted against the limiting component (3), and welding the main board (A) and the seat block (1) after the main board (A) is abutted against the first positioning component (4) and the seat block (1); repeating the step 3, and welding a plurality of seat blocks (1) on each main board (A);
step 4, according to the distance between two adjacent main boards (A), third marks are arranged on the welding platform (2) at intervals along the width direction of the head frame (B), a second positioning component (6) used for positioning and supporting the main boards (A) is fixed at each third mark, a second cushion block (7) used for supporting the head frame (B) is fixed on the welding platform (2), the main boards (A) are placed on the second positioning components (6), the head frame (B) is placed on the second cushion block (7), and the head frame (B) is welded with the main boards (A);
the first positioning component (4) comprises a support (40), a first positioning step (41) abutting against the first side surface (1c) of the seat block (1), a second positioning step (42) abutting against the second side surface (1d) of the seat block (1), and a third positioning step (43) abutting against the long edge of the main board (A), wherein the first positioning step (41) is arranged on the first end surface (40a) of the support (40), the second positioning step (42) is arranged on the first end surface (40a) of the support (40), one end of the third positioning step (43) is fixed with the second positioning step (42), and an assembly area (40b) matched with the seat block (1) is formed among the first end surface (40a), the first positioning step (41) and the second positioning step (42);
when the positioning device is used, the seat block (1) is matched with the assembling area (40b), so that the first side surface (1c) of the seat block (1) is abutted against the side wall surface of the first positioning step (41), the second side surface (1d) of the seat block (1) is abutted against the side wall surface of the second positioning step (42), and the seat block (1) is positioned by the first positioning component (4);
the first positioning part (4) further comprises a positioning block (45) which abuts against the second side face (1d) of the seat block (1), the positioning block (45) is fixed with the third positioning step (43), the positioning block (45) is arranged in the middle or on the upper portion of the side wall of the third positioning step (43), and the seat block (1) obtains positioning of the positioning block (45) besides two faces of the first positioning step (41) and the second positioning step (42) abut against each other.
2. The method for assembling the inner and outer arc frames of the slab continuous casting segment according to claim 1, wherein in the step 1, the position of the overlay welding is a groove (1a) machined on the seat block (1), a concave limit (1b) recessed towards the outer side of the seat block (1) is arranged between the wall surface and the bottom of the groove (1a), the depth of the concave limit (1b) is 3.2-4mm, the height of the concave limit (1b) is 6.5-7.5mm, the overlay welding at least fills a part of the concave limit (1b) from the bottom of the groove (1a), and a machining allowance of 2-3mm is left after the overlay welding is finished.
3. The method for assembling inner and outer arc frames of slab continuous casting segments as claimed in claim 1, wherein a relief groove (44) is left between the first positioning step (41) and the second positioning step (42).
CN202011071588.1A 2020-10-09 2020-10-09 Method for assembling inner and outer arc frames of slab continuous casting fan-shaped section Active CN112157365B (en)

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CN115156750A (en) * 2022-07-28 2022-10-11 大连船用柴油机有限公司 Single piece assembling method for large low-speed marine diesel engine base

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US4953614A (en) * 1987-04-09 1990-09-04 Herbert Lemper Modular continuous caster
CN101691007B (en) * 2009-10-12 2011-07-06 宜昌江峡船用机械有限责任公司 Method for assembling and welding curved-surface sector-segment frames
CN202517103U (en) * 2012-03-09 2012-11-07 宜昌中冶重工机械有限公司 Tool for machining segment upper frame
CN106853570A (en) * 2015-12-09 2017-06-16 天津赛瑞机器设备有限公司 A kind of slab fan-shaped section hypotenuse frame welding frock and its welding method

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