Description:FIELD OF INVENTION
[001] The present invention relates to welder training in arc welding processes like shielded metal arc welding, gas metal arc welding and gas tungsten arc welding. The invention, in particular, relates to an apparatus/device for training, evaluating and providing practice for welders.

BACKGROUND OF THE INVENTION

[002] The welding related fabrication shops / industries require for efficient and economical welder training. This has been topic discussed over the past decade as the realization of a severe shortage of skilled welders is becoming alarmingly evident in today's power sector industries, shipyards, and construction sites. A rapidly retiring workforce, combined with the slow pace of traditional instructor-based welder training has been the impetus for the development of more effective training technologies. Innovations which allow for the accelerated training of the manual dexterity skills specific to welding, along with the expeditious indoctrination of arc welding fundamentals are becoming a necessity. The characterization and training system disclosed herein addresses this vital need for improved welder training and enables the monitoring of manual welding processes to ensure the processes are within permissible limits necessary to meet industry-wide quality requirements. To date, the majority of welding processes are performed manually, yet the field is lacking practical commercially available tools to track the performance of these manual processes. Thus, there is an ongoing need for an effective system/ apparatus for training welders to properly execute various types of welds under various conditions.

[003] One of the great difficulties in the learning process of the welding of metal tubes, resides in the positioning and holding of the elements to be assembled during production of the weld seam.

[004] In addition to over-consumption of ingredients and materials related to the usual conditions of learning and falls of the work in progress, these difficulties are the direct cause of many accidents workshop. The device has no effect, however, on the actual quality of the work of the apprentice, in the implementation of its knowledge and know-how to measure its achievements.

[005] Its economic usefulness, ease of implementation and operational safety are optimum both as a learning medium that as support during the licensing examinations or passing sanctioning learning.

[006] WO/2006/075102 titled “Welder profession training support” discusses about fixing device for exactly, ergonomically and safely holding and positioning different elements used for different steps of training and/or licence exams for a welder profession. Said device consists of a post (3) which is welded to a plate (1), receives a bracket (8) movable about the post (3) and adjustable in height by a mobile clamping ring (4). A pivotable orientable arm (12), which receives a platform (20) or gas chambers (43, 64) to which weldable tubes or samples are fixed in differently selected positions and axes, is connected to the post (3). The inventive device is particularly suitable for equipment of any welder profession trainings and for examining centers delivering said profession licenses.

[007] US4931018 titled “Device for training welders “discusses about a device for training, evaluating and providing practice for welders and particularly welders and welder students that use MIG, TIG and welding devices that employ movable consumable welding rods. The device includes a video monitor having a cathode ray tube, the face of which has visual displays thereon, including displays from which simulated welding parameters can be entered and displays which simulate different welding joints with a welding target to be followed by the operator while holding the selected welding tool. The present device uses a microprocessor and related electronic devices programmed to generate the displays and to control the various machine operations. The device also includes a unique way to produce the various control responses necessary to the operation including optical and electromagnetic responses.

[008] US4124944 titled “Device for teaching and evaluating a person's skill as a welder” discussed about an apparatus for simulating an arc welding operation, for training welders and for evaluating a welder's performance including a target representing a simulated weld to be made, mechanism for imparting predetermined motion to the target, a simulated welding tool including a simulated welding rod and a holder for the rod, the rod having a free end with an element adjacent thereto having properties capable of being sensed magnetically, a magnetic sensor assembly located adjacent to the target for movement therewith and including members capable of responding to the presence of the magnetic field produced by the magnetic element on the rod for producing responses depending upon the position of the simulated welding rod relative thereto and the distance of the rod therefrom, the magnetic sensor assembly including angularly related pairs of opposed sensor members arranged to produce responses to represent the position of the simulated welding rod relative thereto in two different angularly related directions, each of the sensor members being capable of producing a response when in the field of the magnetic element, an electric circuit connected to the sensor members of the aforesaid pairs including circuitry for combining the responses produced by selected ones of the sensor members to produce electric signals representative of the position of the free end of the rod relative to the sensor members and representative of the distance between the rod and the sensor assembly, and a sensor element located on the rod holder, the sensor element being constructed and positioned to respond to the angular orientation of the simulated welding rod relative to the target. The present apparatus also includes an electric circuit for producing audible responses and/or visual indications to simulate an arcing condition and to indicate and record errors that an operator makes in following the target during a simulated welding operation.

[009] US20150056584 titled “System And Method For Manual Welder Training” discusses about A method for manual welder training that includes providing a welding training apparatus that includes both hardware and software components and that is operative to gather and process data in real time, wherein the data is derived from an actual training exercise conducted by a welding trainee; selecting training objectives from a predetermined number of predefined objectives; initializing a curriculum, wherein the curriculum is based on the selected training objectives; performing at least one training exercise, wherein the training exercise is a component of the curriculum; providing real-time feedback to the trainee, wherein the real-time feedback is based on the performance of the trainee during the training exercise; evaluating the performance of the trainee based on data gathered and processed during the training exercise; optionally, adapting the curriculum based on the trainee's performance evaluation; and awarding credentials or certifications to the trainee following successful completion of the curriculum.

OBJECTS OF THE INVENTION

[0010] It is therefore a principal object of the present invention to provide a welding device/apparatus for training, evaluating and providing practice for welders.

[0011] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY OF THE INVENTION

[0012] This summary is provided to introduce concepts related to a welding training device which relates to welder training in arc welding processes such as shielded metal arc welding, gas metal arc welding and gas tungsten arc welding.

[0013] The present disclosure relates to a welding training device comprising a grooved pipe and a grooved plate. The geometric characteristics of the grooved pipe and the grooved plate are predetermined. The grooved pipe and the grooved plate further includes an element representing a member to be welded for training and evaluating a welder. A workpiece adapted to be mounted on the grooved pipe and the grooved plate. The workpiece includes at least one joint to be welded. A connecting means for moving the element of the grooved pipe and grooved plate with different depths, adjustable gaps and widths. A welding tool is operative to form a weld at the joint to be welded. Perform at least one execution task by welding the grooved pipe and the grooved plate with different positions for training and providing real-time feedback to a welder. Train and evaluate the performance of the welder based on welding quality on the grooved pipe and the grooved plate. Automatically modify the geometric characteristics of the grooved pipe and the grooved plate based on requirement of the welding process.

[0014] In one embodiment a method for training and evaluating the performance of a welder comprising the following steps. Configuring a grooved pipe and a grooved plate, wherein the geometric characteristics of the grooved pipe and the grooved plate are predetermined. Configuring the grooved pipe and the grooved plate with an element representing a member to be welded for training and evaluating the welder. Mounting a workpiece on the grooved pipe and the grooved plate, the workpiece including at least one joint to be welded. Configuring a connecting means for moving the element of the grooved pipe and grooved plate with different depths, adjustable gaps and width. Configuring a welding tool, to be operative and forming a weld at the joint. Performing at least one execution task by welding the grooved pipe and the grooved plate with different positions for training and providing real-time feedback to the welder. Training and evaluating the performance of the welder based on welding quality on the grooved pipe and the grooved plate. Modifying the geometric characteristics of the grooved pipe and the grooved plate automatically based on requirement of the welding process.

[0015] In an aspect, the welding training device capable of being used to simulate more different kinds of welding process and welding operations, and provides more accurate means for evaluating and making a record of a welder's performance.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

[0016] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:

[0017] FIG. 1 is a block diagram of a welding training device in an embodiment of the present invention;

[0018] FIG. 2 is a schematic drawing of pipe with grooves for training of welders on all welding process in an embodiment of the present invention;

[0019] FIG. 3 is a schematic drawing of plate with grooves for training of welders on all welding process in an embodiment of the present invention; and

[0020] FIG. 4 is a schematic drawing of cross section of pipe/plate with groove for training of welders on all welding process in an embodiment of the present invention.

[0021] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAIL DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE PRESENT INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS

[0022] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

[0023] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.

[0024] The present subject matter relates to a method and device for manual welder training that includes training of welder in different welding processes like shielded metal arc welding, gas metal arc welding and gas tungsten arc welding.

[0025] FIG. 1 is a block diagram of a welding training device 100 in an embodiment of the present invention. The welding training device 100 comprising a grooved pipe 01 and a grooved plate 02 the geometric characteristics of the grooved pipe 01 and the grooved plate 02 are predetermined. The grooved pipe 01 and the grooved plate 02 further includes an element 03 representing a member to be welded for training and evaluating a welder. A workpiece 04 adapted to be mounted on the grooved pipe 01 and the grooved plate 02, and the workpiece 04 includes at least one joint to be welded. A connecting means 05 for moving the element 03 of the grooved pipe 01 and grooved plate 02 with different depths, adjustable gaps and widths. A welding tool 06, wherein the welding tool 06 is operative to form a weld at the joint to be welded. Perform at least one execution task by welding the grooved pipe 01 and the grooved plate 02 with different positions for training and providing real-time feedback to a welder. Train and evaluate the performance of the welder based on welding quality on the grooved pipe 01 and the grooved plate 02 and automatically modify the geometric characteristics of the grooved pipe 01 and the grooved plate 02 based on requirement of the welding process.

[0026] FIG. 2 illustrates a schematic drawing of grooved pipe 01/ pipe with grooves for training of welders on all welding process according to one embodiment of the present invention. In one embodiment the welding training device 100 having weld training and testing devices capable to simulate different kinds of welding equipment and welding operations on the grooved pipe 01 and the grooved plate 02 (as shown in FIG.2), and provides precise means for evaluating and making a data or record of the welder's performance. In a preferred embodiment the data or record of a welder's performance includes a printed record thereof. In a preferred embodiment the data is derived from an actual training exercise conducted by the welder. The welder execute a predetermined number of predefined objectives by initializing a program for the welder or a trainee. The welder performs different and varied operations. The welding training device 100 is more compact and the welder perform the training and the welder’s training is evaluated for different process and positions.

[0027] FIG. 3 is a schematic drawing grooved plate 02/ plate with grooves for training of welders on all welding process. Using the welding training device 100 the welder perform the training and the performance of the welder is evaluated for different process and positions for different welding such as shielded metal arc welding, gas metal arc welding and gas tungsten arc welding. The welding training device 100 provide improved means for teaching, training, practicing and evaluating welders in the training sessions. In a preferred embodiment the grooved plate 02 and the grooved pipe 01 are selected as greater thickness pipe and plates to get full penetration of weldment. The weld replaces the removed material and makes a complete bridge between the joining parts. The grooves made in the plates and pipes increases the volume of the weld material. The weld area is stronger than the base plate/pipe and ensures safety in the high pressure and high temperature applications, particularly for power boilers used for power generation.

[0028] In one embodiment on the part of the welding training, the defect free joints are made using the welding training device 100 and the rework / rejection is avoided by the welder and the welding training device 100 consumes less time and cost. The grooved pipe 01 and the grooved plate 02 are provided for training to the welders. In a preferred embodiment the grooves are created in the plate/ pipe in high volume of materials for welders training.

[0029] FIG.4 is a schematic drawing of cross section 07 of pipe/plate with groove for training of welders on all welding process in an embodiment of the present invention.
In a preferred embodiment specific height in the grooved pipe 01 and the grooved plate 02 are fixed priorly before performing the execution task. If the grooved pipe 01 and the grooved plate 02 thickness is increased and the height is also increased. The welding training device 100 efficiency is determined based upon the working pressure. In a preferred embodiment the included angle varies from 15 degrees to 45 degree depending on the welding process, polarity and position of the electrode. Depend upon the plate thickness the groove dimensions are carried out.

[0030] In one embodiment the welding training device 100 stores the data or record of the welder's performance and includes a real time feedback. The trainee or welder performance is measured, analyzed, and a feedback response is generated in real-time. The purpose of this feedback response is to provide the differences between acceptable and unacceptable performance while visualizing the at least one execution task. In a preferred embodiment preventing the welder from manipulating the tool and guiding the welder to use the proper technique. The at least one execution task comprises one or more tasks to complete. Typically these tasks are in the form of welding such as shielded metal arc welding, gas metal arc welding and gas tungsten arc welding and the at least one execution task is directed toward mastering a specific welding procedure. Using the welding training device 100 track, train the welder and monitor the progress of the welding specifications that are required for that particular welding type. Each welding procedure specification within the program describes a specific welding procedure in terms of its form variables and execution variables for generating a quality weld.

[0031] In one embodiment the welding training device 100 further includes both hardware and software components, wherein the welding training device 100 is operative to gather and process data or record in real time, and wherein the data is derived from an actual training exercise conducted by the welder. In a preferred embodiment the welder is been awarded been certifications, credentials, or the like to the welder following successful completion of the execution task.

[0032] In one embodiment the training welders carries out multilayer welding and defect free joints are welded such that reworks is avoided. In a preferred embodiment the testing of weldments and after repair of welding is reduced using the welding training device 100. In one embodiment the welders are trained with minimum available resources using the welding training device 100.

[0033] In one embodiment a method for training and evaluating the performance of a welder comprising the following steps. Step 1: Configuring a grooved pipe 01 and a grooved plate 02, wherein the geometric characteristics of the grooved pipe 01 and the grooved plate 02 are predetermined. Step 2: Configuring the grooved pipe 01 and the grooved plate 02 with an element 03 representing a member to be welded for training and evaluating the welder. Step 3: Mounting a workpiece 04 on the grooved pipe 01 and the grooved plate 02, the workpiece 04 including at least one joint to be welded. Step 4: configuring a connecting means 05 for moving the element 03 of the grooved pipe 01 and grooved plate 02 with different depths, adjustable gaps and widths. Step 5: Configuring a welding tool 06, to be operative and forming a weld at the joint. Step 6: Performing at least one execution task by welding the grooved pipe 01 and the grooved plate 02 with different positions for training and providing real-time feedback to the welder. Step 7: Training and evaluating the performance of the welder based on welding quality on the grooved pipe 01 and the grooved plate 02. Step 8: Modifying the geometric characteristics of the grooved pipe 01 and the grooved plate 02 automatically based on requirement of the welding process.

[0034] In one embodiment the welding is a shielded metal arc welding, gas metal arc welding and gas tungsten arc welding. The at least one execution task further includes a series of predetermined tasks, and wherein the tasks are in the form of welding process and specified procedure. Also, the at least one execution task further includes testing, cleaning the joint and joint welding. In a preferred embodiment the connecting means 05 moving the element 03 is capable of generating linear motion.

[0035] In one embodiment the method for manual welder training includes training of welder in different welding processes such as shielded metal arc welding, gas metal arc welding and gas tungsten arc welding. The welding training device 100 ease training in all position of welding. In the welding training device 100, the grooved pipe/plate are ergonomically adjustable and positioned in different positions which is used for different steps of training for the welder profession. The welding training device 100 or apparatus consists of a pipe or plate which is grooved with different depths and adjustable gaps and widths. The groove is welded with different positions for training. The welding training device 100 is particularly suitable for equipment of any welder profession trainings.

[0036] In one embodiment the welding training device 100 in weld training performs a new approach and generation of weld training devices which is more versatile. The welding training device 100 is less mechanical and capable of being used to simulate more different kinds of welding process and welding operations, and provides a much more accurate means for evaluating and making a record of a welder's performance. The welding training device 100 is simpler than known constructions and enables more and varied operations. The welding training device 100 is also more compact than known devices.

[0037] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.

[0038] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope. The present invention will now be described more specifically with reference to the following specification.

[0039] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.

[0040] Although embodiments for the present subject matter have been described in language specific to package features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/device of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

[0041] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

[0042] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.

[0043] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

Claims:We Claim:

1. A welding training device (100) comprising:
a grooved pipe (01) and a grooved plate (02), wherein the geometric characteristics of the grooved pipe (01) and the grooved plate (02) are predetermined;
the grooved pipe (01) and the grooved plate (02) further includes an element (03) representing a member to be welded for training and evaluating a welder;
a workpiece (04) adapted to be mounted on the grooved pipe (01) and the grooved plate (02), wherein the workpiece (04) includes at least one joint to be welded;
a connecting means (05) for moving the element (03) of the grooved pipe (01) and grooved plate (02) with different depths, adjustable gaps and widths
a welding tool (06), wherein the welding tool (06) is operative to form a weld at the joint to be welded;
perform at least one execution task by welding the grooved pipe (01) and the grooved plate (02) with different positions for training and providing real-time feedback to a welder;
train and evaluate the performance of the welder based on welding quality on the grooved pipe (01) and the grooved plate (02), wherein
automatically modify the geometric characteristics of the grooved pipe (01) and the grooved plate (02) based on requirement of the welding process.

2. The welding training device (100) as claimed in claim 1, wherein the connecting means (05) moving the element (03) is capable of generating linear motion.

3. A method for training and evaluating the performance of a welder comprising the steps of:
configuring a grooved pipe (01) and a grooved plate (02), wherein the geometric characteristics of the grooved pipe (01) and the grooved plate (02) are predetermined;
configuring the grooved pipe (01) and the grooved plate (02) with an element (03) representing a member to be welded for training and evaluating the welder;
mounting a workpiece (04) on the grooved pipe (01) and the grooved plate (02), wherein the workpiece (04) including at least one joint to be welded;
configuring a connecting means (05) for moving the element (03) of the grooved pipe (01) and grooved plate (02) with different depths, adjustable gaps and widths;
configuring a welding tool (06), to be operative and forming a weld at the joint;
performing at least one execution task by welding the grooved pipe (01) and the grooved plate (02) with different positions for training and providing real-time feedback to the welder;
training and evaluating the performance of the welder based on welding quality on the grooved pipe (01) and the grooved plate (02), wherein
modifying the geometric characteristics of the grooved pipe (01) and the grooved plate (02) automatically based on requirement of the welding process.

4. The method as claimed in claim 3, wherein the welding is a shielded metal arc welding, gas metal arc welding and gas tungsten arc welding.

5. The method as claimed in claim 3, wherein the at least one execution task further includes a series of predetermined tasks, and wherein the tasks are in the form of welding process and specified procedure.

6. The method as claimed in claim 3, wherein the at least one execution task further includes testing, cleaning the joint and joint welding.