CN110883492A - All-position water wall tube simulated welding frame and simulated welding method - Google Patents
All-position water wall tube simulated welding frame and simulated welding method Download PDFInfo
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- CN110883492A CN110883492A CN201911045926.1A CN201911045926A CN110883492A CN 110883492 A CN110883492 A CN 110883492A CN 201911045926 A CN201911045926 A CN 201911045926A CN 110883492 A CN110883492 A CN 110883492A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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Abstract
The invention relates to an all-position water wall tube simulated welding frame and a simulated welding method, belongs to the technical field of welding, and solves the problem that welding is caused by the fact that welding personnel are loose in welding positions and welding technology in the existing water wall tube welding process. The invention discloses an all-position water wall tube simulation welding frame, which comprises: the device comprises a base, a height adjusting assembly, an angle assembly, a connecting assembly, a fixing assembly and a working surface fixing platform; the height adjustment assembly includes: the device comprises a stand column, a height adjusting lock nut and a height adjusting sleeve; the angle assembly includes: a 0 degree fixation hole, a 45 degree fixation hole and a 90 degree fixation hole. The all-position simulation welding frame and the use method thereof provided by the invention improve the welding technology of welding technical workers, effectively reduce the porosity, slag inclusion rate and crack defect rate of a welding opening, and improve the qualification rate of the crack welding opening.
Description
Technical Field
The invention relates to the technical field of welding frames and welding, in particular to an all-position water wall tube simulated welding frame and a simulated welding method.
Background
With the rapid development of the power industry, the single unit capacity of thermal power generating units at home and abroad is continuously increased, and the examination of power plant equipment is also followed. The water wall pipe is an important component in a heating surface pipe of a power plant boiler and belongs to a high-temperature high-pressure pipeline. Along with the long-term use of equipment, high temperature corrosion, wearing and tearing, sampling etc. need change the welding to the water wall pipe in batches, regularly. At present, the diameters of the water wall tubes of domestic power plants are mainly divided into three types of phi 60, phi 32 and phi 28, the welding positions mainly comprise 2G (tube butt joint vertical fixing position), other positions comprise 5G (tube butt joint horizontal fixing position), and the boiler above the supercritical state contains part 6G (tube butt joint 45-degree oblique welding position) and the like.
The particularity of the welding of the water-cooled wall lies in that the welding is limited by the pipe pitch, the distance between pipes is small, the welding position is difficult, the welding angle is small, the defects of air holes, slag inclusion, cracks and the like are easy to occur, the repair and repair are also very difficult, and the stable operation of a generator set is seriously influenced. Because the height of the spatial position of a weldment and the distance for arranging the barrier pipes have certain requirements in the welding process of the water wall pipe, the welding technical requirements on welding personnel in a power plant are very high. The cross obstacle welding frame is adopted for training welding technicians in the power plant industry at present, the structure is single, the welding environment with small water wall pipe spacing in actual welding operation cannot be simulated, and then the effective training effect on the welding skill of the welding workers cannot be achieved. Therefore, the design of a simulation welding frame is urgently needed, the simulation of the welding condition of the actual on-site water wall pipe can be realized, and the training of welding workers is realized.
Disclosure of Invention
In view of the foregoing analysis, the embodiments of the present invention are directed to providing an all-position water wall tube welding simulation frame and a welding simulation method, where the welding frame can simulate an actual welding site to perform welding training on welding personnel, and further improve the proficiency and practice level of the welding technician in welding the water wall.
An all-position water wall tube mock welding stand, comprising: the base 1 comprises a height adjusting assembly, an angle assembly, a connecting assembly and a fixing assembly; the height adjustment assembly includes: the device comprises a stand column 2, a height adjusting lock nut 3 and a height adjusting sleeve 4; the angle assembly includes: 0 fixed orifices 6, 45 fixed orifices 7 and 90 fixed orifices 8, the coupling assembling includes: a horizontal clamping plate 5, a horizontal sleeve 10 and a full position adjusting arm 12; the fixing assembly includes: horizontal fixing bolt 9, workstation fixing bolt 11, pipe fitting fixed angle 16, pipe fitting fixing bolt 17 and working face fixed platform 18.
Further, the work surface fixing platform 18 includes: a first tube group working surface 13, a second tube group working surface 14, and a third tube group working surface 15; the working surfaces 13, 14 and 15 of the first tube group, the second tube group and the third tube group are circumferentially distributed along the working surface fixing platform 18; the working surface fixing platform 18 is in a regular polygon structure.
Further, the working surface fixing platform 18 is connected with the horizontal clamping plate 5 through the horizontal sleeve 10 and is fixed by the horizontal fixing bolt 9.
Further, a 0-degree fixing hole 6, a 45-degree fixing hole 7, and a 90-degree fixing hole 8 are circumferentially distributed at one end of the horizontal adjustment arm 12.
Further, the horizontal adjusting arm 12 is connected with the upright post 2 through the height adjusting sleeve 4 and is pressed and fixed by the height adjusting locking nut 3; the height adjusting sleeve 4 is sleeved on the upright post.
Further, 45 fixed orifices 8 are used for the welding that the angular separation of water wall pipe and horizontal direction is 45 positions, 0 fixed orifices 7 are used for the welding of water wall pipe vertical position, fixed platform 18 is parallel with stand 2 axial in the working face is concentrated, 90 fixed orifices 9 are used for the welding of water wall pipe horizontal position, fixed platform 18 is concentrated to the working face and the stand 2 angular separation is 90.
Further, a use method of the all-position water wall pipe simulation welding frame comprises the following steps:
step 1: the height adjusting sleeve 4 is adjusted up and down, and the height adjusting lock nut 3 is pressed tightly to fix the horizontal adjusting arm 12;
step 2: the angle adjusting assembly is used for tightly pressing the horizontal adjusting bolt 9 to fix the working surface centralized fixing platform 18;
and step 3: placing one end of a welded test piece to be welded in a fixed platform with a centralized working surface on a pipe fitting fixing angle iron and fixing the pipe fitting fixing angle iron by a pipe fitting fixing bolt;
and 4, step 4: and carrying out welding training on the well-fixed test piece to be welded.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
(1) according to the invention, the working surface centralized fixing platform is provided with a first tube group tube working surface, a second tube group working surface and a third tube group working surface, the three working surfaces are used for setting tube spacing and tube pitch according to the proportion of 1:1 of an actual production device and a simulated welding platform, and simulating the working environment of the tube spacing and the tube pitch between actual welded tubes, so that the familiarity of a welder to the actual welding operation environment is increased, the welding errors of the welder in the actual welding operation are reduced, the welded junction qualification rate of water-cooled wall tubes is effectively improved, and the repair rate and the risk of boiler tube explosion are reduced.
(2) The all-position simulation welding frame provided by the invention is designed with 0-degree fixed holes, 45-degree fixed holes and 90-degree fixed holes in consideration of three spatial positions of pipe butt joint, height difference of different welding personnel and difference of actual welding height, and the three angle adjusting components realize multi-angle welding operation of horizontal, vertical and 45-degree oblique welding positions; the height adjusting assembly, the stand column, the height adjusting sleeve and the height adjusting locking nut realize the height adjustment of the simulation welding frame and overcome the defect of single position angle of other welding frames.
(3) The invention provides an all-position simulation welding frame which is composed of a simulation welding working platform, an all-position adjusting arm and an upright column base, wherein the simulation welding working platform is connected with the all-position adjusting arm through a horizontal connecting sleeve and is fixed through a horizontal fixing bolt; the full-position adjusting arm is connected with the upright post by a high-low connecting sleeve and is fixed by a high-low adjusting sleeve. The all-position simulation welding frame is simple in structure and convenient to process, install and disassemble, and welding workers can conveniently realize simulation welding operation.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a front view of a simulated welding stand for water wall tubes;
FIG. 2 is a side view of a simulated weld holder for water wall tubes;
FIG. 3 is a sectional view taken along line A-A and a sectional view taken along the working surface of the second tube set;
FIG. 4 is an enlarged sectional view of the second tube group of the centralized fixing platform of the working face connected with the horizontal-vertical adjusting splint.
Reference numerals:
1-a base; 2-upright post; 3-adjusting the height of the lock nut; 4-height adjustment sleeve; 5-horizontal splints; a 6-0 degree fixing hole; 7-45 degree fixing holes; 8-90 degree fixing holes; 9-horizontal adjusting bolt; 10-a horizontal connecting sleeve; 11-a work platform fixing bolt; 12-a full position adjustment arm; 13-first stack working face; 14-a second tube set working surface; 15-working surface of third tube group; 16-pipe fitting fixing angle iron; 17-pipe fitting fixing bolts; and 18, centralized fixing of the platform on the working surface.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
The welding stand is used for simulating an actual welding site, particularly, in the embodiment, welding of the boiler water wall tube panel connecting structure tube is simulated, but the welding stand is not limited to simulating the welding equipment.
As shown in the attached figures 1 and 2, the water wall pipe simulation welding frame body is composed of a base 1, an upright post 2, an all-position adjusting arm 12 and a working surface fixing platform 18.
The gravity center of the whole welding operation frame of the base 1 is a steel plate as a main body, the welding operation frame is stable, therefore, the base needs certain weight, and the accident that the base is inclined and overturned due to the fact that the weldment is too heavy after the weldment is additionally arranged is avoided. The stand column 2 supports the whole welding operation frame, the main body is a steel pipe, and the purpose is to enable a weldment to be fixed at a certain height, so that welding is facilitated.
The full position adjusting arm 12 is located at the upper part of the welding frame, the main body is a steel plate processed according to requirements, and a detachable hole for fixing is formed in the steel plate, so that components at different spatial positions can be conveniently installed.
The working face fixing platform 18 is fixed on the all-position adjusting arm, and the working face fixing platform welds simulation pipe fittings with different pipe diameters according to the difference between the aperture of the water wall pipe and the hole spacing.
The working plane of the working plane fixing platform is set to be in a regular polygon structure, an equilateral triangle, a regular square and the like. The water wall pipe fixedly welded by the water wall pipe welding working platform comprises water wall pipes with three specifications of phi 60, phi 32 and phi 28, the welding platform of the working surface is designed according to the type of the water wall pipe to be actually subjected to simulated welding, the thickness of the working surface fixing platform is determined according to the designed working surface fixing platform, and the material of the working surface fixing platform is stainless steel, cast iron, cast aluminum and the like.
Illustratively, the work surface mounting platform 18 is configured as a regular triangular structure, including: a first tube group working surface 13, a second tube group working surface 14, and a third tube group working surface 15. The first tube bank working face fixes water wall tubes with the diameter of 28mm, the second tube bank working face fixes water wall tubes with the diameter of 32mm, and the third tube bank working face fixes water wall tubes with the diameter of 60 mm. The central point of first nest of tubes working face puts and sets up pipe fitting fixed angle 16 and pipe fitting fixing bolt 17 to regard pipe fitting fixed angle as the center, regard the pipe pitch to be 60mm, the interval that the pipe interval is 32mm, respectively distribute 3 water wall pipes that the diameter is 28mm about. Similarly, a pipe fixing angle iron 16 and a pipe fixing bolt 17 are arranged at the center of the working surface of the second pipe group, and 2 water wall pipes with the diameter of 32mm are distributed on the left and the right respectively by taking the pipe fixing angle iron as the center and the pipe pitch as 48mm and the pipe spacing as 16 mm; the central point of the working face of the third tube group is provided with a tube fixing angle iron 16 and a tube fixing bolt 17, and 2 water wall tubes with the diameter of 60mm are distributed left and right respectively by taking the tube fixing angle iron as the center and the tube pitch of 75mm and the tube interval of 15 mm. The angular spacing between the working faces of the three tube sets is 60 °. The three working surfaces are provided with the tube spacing and the tube pitch according to the proportion of 1:1 of an actual production device and a simulated welding platform, the working environment of the tube spacing and the tube pitch between actual welded pipe fittings is simulated, the familiarity of a welder to the actual welding operation environment is increased, the welding errors of the welder in the actual welding operation are reduced, the qualification rate of a welded junction of a water-cooled wall tube is effectively improved, and the repair rate and the risk of tube explosion of a boiler are reduced.
In the specific embodiment, the working surface centralized fixing platform consisting of the working surfaces of the first tube group, the second tube group and the third tube group is an equilateral triangle with the side length of 400mm formed by 10 channel steels, and the two sides of the platform are covered with steel plates with the thickness of 8 mm. The three working surfaces are that the actual production device and the simulated welding platform are provided with the pipe spacing and the pipe pitch according to the proportion of 1:1, so that the actual working environment can be simulated, the welding errors of welding workers in the actual welding operation are reduced, the qualification rate of the welded junction of the water wall pipe is effectively improved, and the repair rate and the risk of pipe explosion of the boiler are reduced.
The full-position adjustment arm 12 includes: the height adjusting lock nut 3, the height adjusting sleeve 4, the horizontal adjusting clamping plate 5, 0-degree fixing holes 6, 45-degree fixing holes 7, 90-degree fixing holes 8, horizontal fixing bolts 9, the horizontal connecting sleeve 10 and the working face fixing adjusting lock nut 11.
It should be noted that the height adjusting locking nut 3, the height adjusting sleeve 4 and the upright post form 2 a height adjusting module of the all-position simulation welding frame, the height adjusting sleeve 4 is sleeved on the upright post, the height adjustment is carried out by moving the position of the height adjusting sleeve up and down, and the height position to be welded is pressed and fixed by the height adjusting locking nut; the full-position adjusting arm 12 is connected with the upright post through the height adjusting sleeve 3; the working surface centralized fixing platform 18 is connected with the horizontal adjusting splint 5 through the horizontal connecting sleeve 10 and is pressed by the horizontal adjusting bolt 9 and the working platform fixing bolt 11.
In the design, three spatial positions of pipe butt joint, height difference of different welding personnel and difference of actual welding height are considered, and a 0-degree fixing hole, a 45-degree fixing hole and a 90-degree fixing hole are arranged, and the three angle adjusting components are used for realizing multi-angle welding operation at horizontal, vertical and 45-degree oblique welding positions; the height adjusting assembly, the stand column, the height adjusting sleeve and the height adjusting locking nut realize the adjustment of the height of the simulation welding frame, solve the defects of single positions and angles of other welding frames and realize the training of welding workers with different skill levels.
The angle adjusting part of the simulated welding frame consists of a 0-degree fixing hole 6, a 45-degree fixing hole 7 and a 90-degree fixing hole 8, and is circumferentially and sequentially distributed at one end of a horizontal adjusting arm 12 in an arc shape. The 45-degree fixing hole 8 is used for welding the water wall tube at an angle interval of 45 degrees with the horizontal plane, the 0-degree fixing hole 7 is used for welding the vertical position of the water wall tube, the working face centralized fixing platform 18 is axially parallel to the upright column 2, and the 90-degree fixing hole 9 is used for welding the horizontal position of the water wall tube. The three angle adjusting components realize multi-angle and multi-position welding operation of horizontal, vertical and 45-degree oblique welding, and welding personnel can select different welding positions by matching with the height adjusting assembly so as to pertinently improve the welding skill of the welding personnel.
It should be noted that the working surface fixing platform also has an angle adjusting function. After the position of the working face fixing platform is determined by the height adjusting sleeve and the height adjusting locking nut and the angle fixing holes (0-degree fixing hole 6, 45-degree fixing hole 7 and 90-degree fixing hole 8) are determined, the shape of the working face fixing platform has an adjusting function. In one embodiment, the work surface holding platform is designed as an equilateral triangle with a side length of 400mm, the angle interval between the work surfaces of the three tube groups is 60 °, and the angle between the work surfaces of the other tube groups and the horizontal plane can be determined by taking the position of the first tube group and the horizontal plane as a reference standard. The shape of the work surface mounting platform can set the angular interval to a variety of angular intervals, such as 30 °, 40 °, 45 °, or 60 °, among others. The angular intervals in the present invention are preferably 60 °.
Example 1:
when the welding training is performed, a 45 ° tube butt-inclined welding position (6G welding position) is performed, taking the second tube group work surface as an example. As shown in fig. 2, in the first step, the height adjusting sleeve 4 of the full position adjusting arm 12 is set on the column 2, and the best welding position is determined by moving the height adjusting sleeve 4 up and down according to the height and welding angle of the welder, and is fixed by the height adjusting locking nut 3. The matching of the height adjusting sleeve 4 and the height adjusting locking nut 3 can ensure that welding technicians can carry out welding work at the optimal height position, and the problem of welding quality caused by vertical displacement of a welding frame in the welding process is avoided. And secondly, the working face fixing platform 18 is connected with the full-position adjusting arm 12 through the horizontal connecting sleeve 10, the horizontal connecting sleeve 10 is connected with the 45-degree fixing hole 7, the full-position adjusting arm 12 and the working face fixing platform 18 are fixed through the horizontal adjusting bolt 9, and the assembly of the full-position simulation welding frame is completed. Thirdly, one end of the welded test piece to be welded is placed on a pipe fitting fixing angle iron 16 in a working surface centralized fixing platform 18 and is fixed by a pipe fitting fixing bolt 17; as shown in fig. 3 and 4, the welding technician places one end of the to-be-welded test piece, which has been set, in the right-angle opening of the pipe fixing angle iron 16, and tightens the pipe fixing bolt 17. The pipe fitting fixing angle iron 16 and the pipe fitting fixing bolt are used as limiting devices for limiting the position of a pipe fitting to be welded, so that the pipe fitting to be welded is guaranteed not to displace, safety and stability in the welding process are guaranteed, and welding errors caused by welding technicians are avoided. And fourthly, performing simulated welding operation on the to-be-welded test piece which is well point-fixed by welding workers. When a welding technician performs welding, the distance between the nozzle and a weldment is kept between 3mm and 5mm, the extension length of the tungsten electrode is 3mm to 4mm, the distance does not influence the sight of a welding worker, and the occurrence rate of air holes can be reduced by more than 96 percent; the nozzle back-tilting angle is 70-80 degrees, the gas flow is 8-10L/min, the welding speed is 40-60 mm/min, the welding current is 100A-110A, the parameter setting reduces the welding piece slag inclusion rate by more than 90%, reduces the welding crack defect rate by more than 90%, and obviously improves the welding quality.
Example 2:
when the pipe to be welded is welded at the horizontal plane vertical position (2G), in the first step, the height adjusting sleeve 4 in the full-position adjusting arm 12 is sleeved on the upright post 2, and the height of the full-position adjusting arm 12 on the upright post 2 is adjusted according to the height of a welder and the welding angle. After the proper height of the full position adjusting arm 12 is determined, the full position adjusting arm is fixed by the height adjusting lock nut 3. And secondly, connecting the working face fixing platform 18 with the full-position adjusting arm 12 through the horizontal connecting sleeve 10, connecting the horizontal connecting sleeve 10 with the 0-degree fixing hole 6, and fixing the full-position adjusting arm 12 and the working face fixing platform 18 by the horizontal adjusting bolt 9. Thirdly, one end of the welded test piece to be welded is placed on a pipe fitting fixing angle iron 16 in a working surface centralized fixing platform 18 and is fixed by a pipe fitting fixing bolt 17; . And fourthly, performing simulated welding operation on the to-be-welded test piece which is well point-fixed by welding workers.
Example 3:
when the pipe to be welded is welded in a pipe butt joint horizontal position (5G), in the first step, the height adjusting sleeve 4 in the full-position adjusting arm 12 is sleeved on the stand column 2, and the height of the full-position adjusting arm 12 and the height of the stand column 2 are adjusted according to the height of a welder and the actual welding position. After the proper height of the full position adjusting arm 12 is determined, the full position adjusting arm is fixed by the height adjusting lock nut 3. And secondly, connecting the working face fixing platform 18 with the full-position adjusting arm 12 through the horizontal connecting sleeve 10, connecting the horizontal connecting sleeve 10 with the 90-degree fixing hole 8, and fixing the full-position adjusting arm 12 and the working face fixing platform 18 by the horizontal adjusting bolt 9. Thirdly, one end of the welded test piece to be welded is placed on a pipe fitting fixing angle iron 16 in a working face centralized fixing platform 18 and is fixed by a pipe fitting fixing bolt 17. And fourthly, performing simulated welding operation on the to-be-welded test piece which is well point-fixed by welding workers. And taking off the welded pipe after completing the welding training of one position. If welding training at other positions is needed, a new welding part can be used at the position and fixed at the corresponding disconnected end for welding training. By means of the welding frame, the welding skill of a welder can be improved, and errors and welding defects which may occur when the welder welds on related equipment are reduced.
The technical effects of the all-position simulation welding frame provided by the invention and the existing simulation welding frame are compared as shown in the following table:
table 1: technical effect comparison of all-position simulation welding frame and existing simulation welding frame
In addition, compared with the existing welding frame, the welding efficiency of a welder is improved by 50% -80% by the simulated welding frame provided by the invention.
The invention provides an all-position simulation welding frame which is composed of a simulation welding working platform, an all-position adjusting arm and an upright column base, wherein the simulation welding working platform is connected with the all-position adjusting arm through a horizontal connecting sleeve and is fixed through a horizontal fixing bolt; the full-position adjusting arm is connected with the upright post by a high-low connecting sleeve and is fixed by a high-low adjusting sleeve. The all-position simulation welding frame is simple in structure and convenient to process, install and disassemble, and welding workers can conveniently realize simulation welding operation.
Claims (10)
1. The utility model provides an all-position water wall pipe simulating welding frame which characterized in that includes: the base (1) comprises a height adjusting component, an angle component, a connecting component and a fixing component;
the height adjustment assembly includes: the device comprises a vertical column (2), a height adjusting lock nut (3) and a height adjusting sleeve (4); the angle assembly includes: a 0-degree fixing hole (6), a 45-degree fixing hole (7) and a 90-degree fixing hole (8).
2. An all-position water wall tube mock welding stand according to claim 1, characterised in that said connection assembly comprises: the device comprises a horizontal clamping plate (5), a horizontal sleeve (10) and a full-position adjusting arm (12); the fixing assembly includes: horizontal fixing bolts (9), workbench fixing bolts (11), pipe fitting fixing angle iron (16), pipe fitting fixing bolts (17) and a working face fixing platform (18).
3. An all-position waterwall tube mock welding stand, according to claim 2, characterized by a work surface fixture platform (18) comprising: a first tube group working surface (13), a second tube group working surface (14), and a third tube group working surface (15); the working surfaces (13, 14 and 15) of the first pipe group, the second pipe group and the third pipe group are circumferentially distributed along the working surface fixing platform (18); the working face fixing platform (18) is of a regular polygon structure.
4. An all-position water wall tube simulated welding frame according to claim 3, characterized in that the working face fixing platform (18) is connected with the horizontal clamping plate (5) through the horizontal sleeve (10) and fixed by the horizontal fixing bolt (9).
5. The all-position water wall tube simulated welding frame according to claim 4, wherein the 0-degree fixing holes (6), the 45-degree fixing holes (7) and the 90-degree fixing holes (8) are circumferentially distributed at one end of the horizontal adjusting arm (12).
6. The all-position water wall pipe simulated welding frame according to claim 5, wherein the horizontal adjusting arm (12) is connected with the upright column (2) through a height adjusting sleeve (4) and is pressed and fixed by a height adjusting locking nut (3); the height adjusting sleeve (4) is sleeved on the upright post.
7. An all-position water wall tube mock welding stand according to claim 6, characterised in that said 45 ° fixation hole (8) is used for welding of water wall tubes in a position angularly spaced 45 ° from horizontal.
8. An all-position water wall pipe simulation welding frame according to claim 7, characterized in that the 0-degree fixing holes (7) are used for welding the water wall pipe at the vertical position, and the working face centralized fixing platform (18) is axially parallel to the upright column (2).
9. An all-position water wall tube simulated welding frame according to claim 8, characterized in that the 90-degree fixing holes (9) are used for welding the water wall tubes in the horizontal position, and the working face centralized fixing platform (18) is angularly spaced from the upright (2) by 90 degrees.
10. The simulated welding method for the all-position water wall tube simulated welding frame according to claims 1-9, characterized by comprising the following steps:
step 1: the height adjusting sleeve (4) is adjusted up and down, and the height adjusting lock nut (3) is pressed tightly to fix the horizontal adjusting arm (12);
step 2: the angle adjusting assembly is used for pressing a horizontal adjusting bolt (9) to fix the working surface centralized fixing platform (18);
and step 3: one end of a to-be-welded test piece which is well point-fixed is placed in a pipe fitting fixing angle iron (16) in a working surface centralized fixing platform (18) and is fixed by a pipe fitting fixing bolt (17);
and 4, step 4: a simulated welding operation is performed.
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