A method for solving the double-sided forming problem of submerged arc welding single-sided welding

Abstract

The invention relates to the technical field of submerged arc welding and provides a method for solving the problem of single-sided welding and double-sided forming of submerged arc welding. The method comprises a test phase and a welding phase. The test phase comprises the following steps: S1, performing surfacing welding on a first test plate to determine a plurality of submerged arc welding penetration data of submerged arc welding; S2, opening an I-shaped groove on a second test plate; S3, selecting a group of submerged arc welding penetration data with the best submerged arc welding penetration effect based on the plurality of submerged arc welding penetration data in step S1; S4, placing pads on different assembly gaps and selecting a group of submerged arc welding penetration data and submerged arc welding fusion data that make weld size data and fusion data most consistent with standards; the welding phase comprises the following steps: S5, arranging a submerged arc welding vehicle track and a welding trolley inside a container cylinder; S6, inputting a group of submerged arc welding penetration data and submerged arc welding fusion data that make weld size data and fusion data most consistent with standards into a controller of the welding trolley.

Description

Technical Field

[0001] The invention relates to the technical field of submerged arc welding, and in particular to a method for solving the problem of double-sided forming of single-sided welding of submerged arc welding. Background Art

[0002] Currently, many container cylinders require longitudinal and circumferential welding during production and assembly. Based on existing technology and manufacturing experience, the entire process involves blanking, machining the groove, welding the front surface, cleaning the root, and finally welding the back surface. During welding, welders must set up the submerged arc welding track, position the welding trolley, and operate the equipment at the highest point of the 4-meter-high cylinder, posing a significant safety hazard. Using existing processes, longitudinal and circumferential welding is prone to welding defects due to the large diameter of the container cylinder and its wall thickness of only 10-12mm. Therefore, balancing welding quality and efficiency is an area of ​​urgent research and development. Summary of the Invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a method for solving the double-sided forming of submerged arc welding single-sided welding, so as to solve the problems raised in the background technology.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions: a method for solving the double-sided forming problem of single-sided submerged arc welding, comprising a test stage and a welding stage;

[0005] The trial phase includes the following steps:

[0006] S1. surfacing welding on a first test plate to determine multiple submerged arc welding penetration data, wherein the material and size of the first test plate are the same as those of the container cylinder;

[0007] S2. Cut an I-shaped groove on a second test plate, the material and size of the second test plate being the same as those of the container cylinder;

[0008] S3, performing submerged arc welding penetration verification on the I-shaped groove based on the multiple submerged arc welding penetration data in step S1, and selecting a set of submerged arc welding penetration data that has the best submerged arc welding penetration effect;

[0009] S4. placing gaskets on different assembly gaps, verifying submerged arc welding penetration data of the gaskets, collecting weld dimension data and fusion data, and selecting a set of submerged arc welding penetration data that best meets the standards for the weld dimension data and fusion data;

[0010] The welding stage includes the following steps:

[0011] S5. The submerged arc welding vehicle track and the welding trolley are both arranged inside the container cylinder;

[0012] S6. Inputting a set of submerged arc welding penetration data that makes the weld size data and fusion data most consistent with the standard into the controller of the welding carriage, the controller controlling the welding carriage to perform welding operations.

[0013] Furthermore, the material of the liner is ceramic.

[0014] Furthermore, the welding carriage performs welding operations on the ground.

[0015] Beneficial effects of the present invention: The present invention provides a method for solving the double-sided forming problem of single-sided welding of submerged arc welding. During the test phase, a set of submerged arc welding penetration data and submerged arc welding fusion data that best meet the standards are verified and selected. These data are implemented during the welding phase, resulting in higher welding quality. The welding trolley is placed inside the container cylinder, and the longitudinal seams are welded on the ground and the circumferential seams are welded at a low position. The longitudinal seams and circumferential seams of the container cylinder are welded efficiently while ensuring the safety of the equipment and welding personnel. Compared with previous welding methods, the present application eliminates the mechanical groove processing during the welding phase, eliminates the back root cleaning, and reduces the back welding and other steps, thereby improving the efficiency of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] In this application, unless otherwise specified or limited, the terms "connect" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0019] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0020] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise specifically defined.

[0021] like Figure 1 As shown, the present invention provides a method for solving the problem of double-sided forming in single-sided submerged arc welding, which includes a test stage and a welding stage.

[0022] The pilot phase includes:

[0023] S1. Perform surfacing welding on a first test plate to determine multiple submerged arc welding penetration data. The material and size of the first test plate are the same as those of the container cylinder. Both the first test plate and the container cylinder are steel plates.

[0024] S2. Use machining equipment to open an I-shaped groove on the second test plate. The material and size of the second test plate are the same as those of the container cylinder. Both the second test plate and the container cylinder are steel plates.

[0025] S3. Based on the multiple submerged arc welding penetration data in step S1, these data are sequentially subjected to submerged arc welding penetration verification on the I-shaped groove, and finally a group of submerged arc welding penetration data with the best submerged arc welding penetration effect is selected.

[0026] S4. Place gaskets at different assembly gaps, verify the submerged arc welding penetration data of the gaskets, and collect weld dimensional data and fusion data. For each assembly gap, select a set of submerged arc welding penetration data that best meets the standard weld dimensional data and fusion data.

[0027] The welding stages include:

[0028] S5. The submerged arc welding track and the welding carriage are both arranged inside the container body. This allows the longitudinal seam of the container body to be welded from the inside out, and the circumferential seam of the container body to be welded at a low position. Compared with existing solutions, the welding operation is performed at a lower height, ensuring the safety of equipment and welders, and performing welding operations efficiently.

[0029] S6. Input a set of submerged arc welding penetration data that makes the weld size data and fusion data most consistent with the standard into the controller of the welding carriage, and the controller controls the welding carriage to perform welding operations.

[0030] The present application can achieve the following effects when implemented: 1. During the test phase, a set of submerged arc welding penetration data and submerged arc welding fusion data that best meet the standards are verified and selected. These data are implemented during the welding phase to achieve higher welding quality. This application continuously readjusts various data based on the weld formation after each welding operation is completed during the test phase, selects a set of submerged arc welding penetration data and submerged arc welding fusion data that best meet the standards, and directly applies them widely during the welding phase.

[0031] 2. The welding trolley is placed inside the container cylinder, and the longitudinal seams are welded on the ground and the circumferential seams are welded at a low position. The longitudinal seams and circumferential seams of the container cylinder are welded efficiently while ensuring the safety of the equipment and welding personnel.

[0032] 3. Compared with previous welding methods, this application eliminates the mechanical groove processing during the welding stage, eliminates the back root cleaning, reduces the back welding and other steps, thereby improving the efficiency of the welding operation.

[0033] In one embodiment, the backing is made of ceramic. The product quality and technical performance of ceramic welding backings meet industry standards. They offer excellent moisture resistance and arc stability during welding, ensuring weld quality and improving work efficiency, significantly enhancing the working conditions of welders.

[0034] In one embodiment, the welding carriage performs welding operations on the ground, further ensuring the safety of the welding personnel.

[0035] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be included therein.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for solving the double-sided forming problem of submerged arc welding, characterized by: Including the test stage and welding stage; The trial phase includes the following steps: S1. surfacing welding on a first test plate to determine multiple submerged arc welding penetration data, wherein the material and size of the first test plate are the same as those of the container cylinder; S2. Cut an I-shaped groove on a second test plate, the material and size of the second test plate being the same as those of the container cylinder; S3, performing submerged arc welding penetration verification on the I-shaped groove based on the multiple submerged arc welding penetration data in step S1, and selecting a set of submerged arc welding penetration data that has the best submerged arc welding penetration effect; S4. placing gaskets on different assembly gaps, verifying submerged arc welding penetration data of the gaskets, collecting weld dimension data and fusion data, and selecting a set of submerged arc welding penetration data that best meets the standards for the weld dimension data and fusion data; The welding stage includes the following steps: S5. The submerged arc welding vehicle track and the welding trolley are both arranged inside the container cylinder; S6. Inputting a set of submerged arc welding penetration data that makes the weld size data and fusion data most consistent with the standard into the controller of the welding carriage, the controller controlling the welding carriage to perform welding operations.

2. A method for solving the double-sided forming problem of submerged arc welding single-sided welding according to claim 1, characterized in that: The material of the liner is ceramic.

3. A method for solving the double-sided forming problem of submerged arc welding single-sided welding according to claim 1, characterized in that: The welding carriage performs welding operations on the ground.

Images