A high-temperature alloy remelting electrode automatic circumferential seam welding device and method

Abstract

The present invention discloses an automatic circumferential seam welding device and method for high-temperature alloy remelting electrodes. The device includes a base, a lifting platform, a motor roller, a dummy electrode roller, an electrode, a dummy electrode, a welding gun, a bracket track and a movable platform. When in use, first adjust the lifting platform so that the dummy electrode is aligned with the center line of the electrode, adjust the position of the welding gun to align with the weld, control the electric drive trolley, weld a distance on the upper part of the weld so that the electrode and the dummy electrode are fixed, then lower the lifting platform so that the dummy electrode roller leaves the dummy electrode, then start the electric drive roller to drive the electrode and the dummy electrode to rotate together, and at the same time start the electric drive trolley to move in the opposite direction of the electrode rotation, keep the welding gun position always directly above, and finally start welding. The present invention adopts horizontal welding, which reduces the difficulty and risk factor of welding; at the same time, the welding position of the welding gun is always kept directly above, which is convenient for the staff to observe and adjust, and improves the welding efficiency.

Description

Technical Field

[0001] The invention relates to the field of automated girth welding, in particular to the field of automated girth welding of high-temperature alloy remelting electrodes. Background Art

[0002] High-temperature alloy remelting is a welding method that places the electrode in a water-cooled copper crystallizer to improve the density and uniformity of the alloy and eliminate defects such as material segregation through the process of remelting and solidification. The electrode surface is rough and uneven, but the weight is more than 1 ton. The dummy electrode is finely processed, with a smooth surface and good roundness, but the weight is less than 500kg. The diameter of the dummy electrode is smaller than the electrode, and a circular fillet weld is formed after docking. Electrode remelting requires the dummy electrode to be hoisted and remelted with electricity. Before this, the centering welding of the electrode and the dummy electrode is an important step.

[0003] At present, the electrode centering welding mostly adopts vertical manual welding, which has problems such as difficult centering, too long electrode, too high welding position, and safety risks.

[0004] However, horizontal fixed electrode welding requires all-position welding, which is difficult and the welding quality is difficult to guarantee. Rotating electrode fixed welding gun welding is difficult to achieve stable welding due to problems such as uneven electrode surface and roundness deviation. Although the dummy electrode has a smooth surface and good roundness, it is much lighter than the electrode and is difficult to rotate and weld with the dummy electrode. Summary of the invention

[0005] The technical problems to be solved by the present invention are: the vertical manual welding in the above-mentioned background technology is difficult and has safety risks; secondly, in horizontal welding, due to the uneven surface of the electrode and the roundness deviation, it is difficult to weld smoothly; in addition, the position of the welding gun in conventional automatic welding is not fixed, which affects the observation and adjustment of the staff.

[0006] The technical solution adopted by the present invention is: to provide an automated circumferential seam welding device for high-temperature alloy remelting electrodes, including a base, a lifting platform, a motor roller, a dummy electrode roller, an electrode, a dummy electrode and a welding gun, the electrode roller and the lifting platform are fixed at both ends of the base, the dummy electrode roller is installed on the lifting platform, the electrode and the dummy electrode are placed on the electrode roller and the dummy electrode roller respectively, in addition, it also includes a track and a movable platform, the track is fixed on the dummy electrode with good roundness close to the weld and aligned with the dummy electrode, the movable platform is movably clamped on the track, and the welding gun is elastically installed on the movable platform to align with the weld and keep in contact with the weld.

[0007] According to a further limitation, in the above device, the electrode roller is an electrically driven roller capable of driving the electrode to rotate at a constant speed.

[0008] According to a further limitation, in the above device, the movable platform is an electrically driven trolley capable of sliding along the track at a constant speed.

[0009] The welding method using the high-temperature alloy remelting electrode automated circumferential seam welding device is as follows: first, adjust the lifting platform so that the dummy electrode is aligned with the center line of the electrode, adjust the position of the welding gun to align with the weld, control the electric drive trolley, weld a distance on the upper part of the weld so that the electrode and the dummy electrode are fixed, then lower the lifting platform so that the dummy electrode roller leaves the dummy electrode, then start the electric drive roller to drive the electrode and the dummy electrode to rotate together, and at the same time start the electric drive trolley to move in the opposite direction of the electrode rotation to keep the welding gun position always directly above, and finally start welding.

[0010] As a further limitation, in the above welding method, the electrode and the movable table move in opposite directions.

[0011] Further definition, in the above welding method, the ratio of the electrode rotation linear speed to the movable table speed is equal to the ratio of the electrode radius to the dummy electrode radius, which can keep the welding gun position always directly above.

[0012] The beneficial effects achieved by the present invention are as follows: since the present invention adopts horizontal welding, the difficulty and risk factor of welding are reduced; since the welding gun is flexibly installed on the movable table and is aligned with the dummy electrode through the track, the welding gun can achieve stable welding when the electrode surface is uneven and the roundness deviation occurs. At the same time, the welding position of the welding gun is always kept directly above, which is convenient for staff to observe and adjust, thereby improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a structural schematic diagram of the present invention.

[0014] Attached Figure 2 It is a side view of the electrode and the electrode roller of the present invention.

[0015] Attached Figure 3 It is a side view of the dummy electrode and the electrode of the present invention.

[0016] Among them, 1-base; 2-lifting platform; 3-electrode roller (electrically driven roller); 4-dummy electrode roller; 5-electrode; 6-dummy electrode; 7-welding gun; 8-track; 9-movable table (electrically driven trolley); V1-electrode rotation linear speed; V2-movable table speed; R1-electrode radius; R2-dummy electrode radius. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention, and are not used to limit the present invention.

[0018] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In the present invention, the electric drive roller 3 and the electric drive trolley 9 are both common electric drive structures, which can be directly purchased and installed in the market, so their internal structures are not described in detail.

[0020] like Figure 1 The high-temperature alloy remelting electrode automated circumferential seam welding device shown comprises a base 1, a lifting platform 2, an electrode roller 3, a dummy electrode roller 4, an electrode 5, a dummy electrode 6, a welding gun 7, a track 8 and a movable platform 9. The electrode roller 3 and the lifting platform 2 are fixed at both ends of the base 1, the dummy electrode roller 4 is installed on the lifting platform 2, the electrode 5 and the dummy electrode 6 are placed on the electrode roller 3 and the dummy electrode roller 4 respectively, the track 8 is fixed on the dummy electrode 6 near the weld, the movable platform 9 is movably clamped on the track 8, and the welding gun 7 is elastically installed on the movable platform 9 to align with the weld and keep in contact with the weld.

[0021] like Figure 2 The figure shows a side view of the electrode and the electrode roller. When the electrode roller is powered on and rotated, it can drive the electrode to rotate together.

[0022] like Figure 3 It shows the side view of the dummy electrode and the electrode. The electrode rotation linear velocity is V1, the movable stage velocity is V2, and the direction is opposite to V1. The electrode radius is R1, and the dummy electrode radius is R2.

[0023] The method for using the high-temperature alloy remelting electrode automatic circumferential seam welding device is as follows:

[0024] First, adjust the lifting platform 2 so that the center line of the dummy electrode 6 is aligned with the center line of the electrode 5, adjust the position of the welding gun 7 to align with the weld, then control the electric drive trolley 9 to weld a distance above the weld so that the electrode 5 and the dummy electrode 6 are fixed, and then lower the lifting platform 2 so that the dummy electrode roller 4 leaves the dummy electrode 6. Then start the electric drive roller 3 to drive the electrode 5 and the dummy electrode 6 to rotate together, and at the same time start the electric drive trolley 9 to move in the opposite direction of the electrode rotation. Finally, start the welding 7 to ensure that the electrode welding position is always directly above, and at the same time, the welding gun is elastically mounted on the movable table, so that it is not affected by the fluctuation of the electrode rotation during welding and can always fit the weld.

[0025] To ensure that the welding position is always kept at the top, the formula should be met when welding: That is, the ratio of the electrode rotation linear velocity to the movable stage velocity is equal to the ratio of the electrode radius to the dummy electrode radius.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding method for a high-temperature alloy remelting electrode automatic circumferential seam welding device, characterized in that: First, adjust the lifting platform so that the dummy electrode is aligned with the center line of the electrode, adjust the position of the welding gun to align with the weld, control the electric drive trolley, perform preliminary welding on the upper part of the weld, fix the electrode and the dummy electrode, lower the lifting platform so that the dummy electrode roller leaves the dummy electrode, then start the electric drive roller to drive the electrode and the dummy electrode to rotate together, start the electric drive trolley at the same time, and finally start welding. The high-temperature alloy remelting electrode automatic circumferential seam welding device comprises a base, a lifting platform, an electrode roller, a dummy electrode roller, an electrode, a dummy electrode and a welding gun. The electrode roller and the lifting platform are fixed at both ends of the base, and a dummy electrode roller is installed on the lifting platform. The electrode and the dummy electrode are placed on the electrode roller and the dummy electrode roller respectively. It also includes a track and a movable table. The track is fixed on the dummy electrode with better roundness near the weld and aligned with the dummy electrode. The movable table is movably stuck on the track, and the welding gun is elastically installed on the movable table to align with the weld to keep it in contact with the weld.

2. The welding method of the high-temperature alloy remelting electrode automatic circumferential seam welding device according to claim 1 is characterized in that: The electrodes and the movable stage move in opposite directions.

3. The welding method of the high-temperature alloy remelting electrode automatic circumferential seam welding device according to claim 1 is characterized in that: The ratio of the electrode rotation linear velocity to the movable table velocity is equal to the ratio of the electrode radius to the dummy electrode radius, which can keep the welding gun position always directly above.

4. The welding method of the high-temperature alloy remelting electrode automatic circumferential seam welding device according to claim 1, characterized in that: The electrode roller is an electrically driven roller that can drive the electrode to rotate at a constant speed.

5. The welding method of the high-temperature alloy remelting electrode automatic circumferential seam welding device according to claim 1, characterized in that: The movable platform is an electrically driven trolley that can slide along the track at a constant speed.

Images