Method for inspecting vacuum consumable electrode welding of titanium alloy

Abstract

The present invention relates to the technical field of titanium alloy melting, and discloses a method for inspecting the welding of a titanium alloy consumable electrode in vacuum. The inspection steps are as follows: Step 1, before inspection, install the spliced assembly component on the top of the crucible. The assembly component is attached to the outer wall of the electrode, and the gap between the electrode and the crucible is blocked by the assembly component; Step 2, conduct the inspection. Inspect the welding position of the electrode, remove the welding bead, and the removed welding bead falls onto the assembly component; Step 3, remove the assembly component. After the inspection is completed, clean the welding bead received on the assembly component, and then remove the assembly component. This invention patent solves the problem in the prior art that the removed welding bead easily falls into the gap between the crucible and the electrode, affecting the quality of the ingot, by setting a receiving panel to block the gap between the electrode and the crucible with the receiving panel and receiving impurities such as the cleaned welding bead with the receiving panel.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium alloy melting, and particularly to a method for inspecting the welding of titanium alloy vacuum consumable electrodes. Background Art

[0002] After the welding of titanium alloy vacuum consumable electrodes, there are impurities such as welding beads at the welding position of the consumable electrodes. If the welding beads are not removed, when the electrode is inserted into the crucible subsequently, the welding beads may cause the electrode to contact the inner wall of the crucible, which will have an adverse effect on the subsequent melting. Moreover, due to the existence of the welding beads, the content of low-density inclusions in the final titanium alloy ingot will increase during subsequent melting, affecting the quality of the ingot. Therefore, before melting, it is necessary to inspect the welding quality of the consumable electrodes and remove the welding beads of the welding to avoid the influence of the welding beads on the subsequent ingot.

[0003] The existing inspection method mainly inspects the welding quality of the electrode by visual inspection, and then manually removes the welding beads. Since there is a gap between the electrode and the crucible, and the welded part of the electrode is above the crucible during inspection, the removed welding beads and other impurities are likely to fall into the gap, which may also cause the electrode to contact the inner wall of the crucible, and the welding beads will eventually melt into the ingot, which will also affect the quality of the subsequent ingot. Therefore, it is necessary to improve the existing inspection method to prevent the welding beads from falling into the gap between the crucible and the electrode during inspection and cleaning, which affects the quality of the ingot. Summary of the Invention

[0004] The present invention aims to provide a method for inspecting the welding of titanium alloy vacuum consumable electrodes to solve the problem in the prior art that the removed welding beads are likely to fall into the gap between the crucible and the electrode, which affects the quality of the ingot.

[0005] To solve the above problems, the present invention adopts the following technical scheme: A method for inspecting the welding of titanium alloy vacuum consumable electrodes, and its inspection steps are as follows:

[0006] Step 1: Before inspection, install the spliced assembly component on the top of the crucible. The assembly component fits against the outer wall of the electrode, and uses the assembly component to block the gap between the electrode and the crucible;

[0007] Step 2: Conduct inspection, inspect the welding position of the electrode, remove the welded welding beads, and the removed welding beads fall onto the assembly component;

[0008] Step 3: Remove the assembly component. After the inspection is completed, clean the welding beads received on the assembly component, and then remove the assembly component.

[0009] The principle and beneficial effects of the present scheme are as follows: in the present application, before checking the electrode welding position, the assembling component is installed to the top just passed, the assembling component is fitted with the outer wall of the electrode, and the assembling component shields the gap between the electrode and the crucible. Therefore, during the inspection, the assembling component can be used to receive the cleaned impurities such as weld nodules to prevent the weld nodules from falling into the gap between the electrode and the crucible. After the inspection is completed, the weld nodules received on the assembling component are cleaned to completely avoid the risk of the weld nodules affecting the quality of the ingot. Finally, the assembling component is removed so that the electrode can be conveniently inserted into the crucible later. At the same time, the assembling component in the present application is spliced, so when the assembling component is installed to the top of the crucible, the position of the crucible electrode relative to the crucible can remain unchanged. After cleaning the weld nodules, the assembling component can be disassembled without moving the electrode. Therefore, it is very convenient and labor-saving to operate.

[0010] Preferably, as an improvement, a shielding mechanism is provided on the outer side of the assembling component, and the shielding mechanism is used to laterally block the weld nodules that fall onto the assembling component.

[0011] In this solution, a shielding mechanism is provided on the outside of the assembly component, and the shielding mechanism is used to laterally block the weld nodules that fall onto the assembly component to prevent the weld nodules from falling outside the assembly component. This is conducive to better receiving all weld nodules on the assembly component, so that the weld nodules will not fall randomly around the top of the crucible.

[0012] Preferably, as an improvement, the manufacturing method of the assembly component is as follows: a matching hole with a diameter equal to the electrode diameter is cut on a receiving panel with a cross-sectional area larger than the electrode cross-sectional area, and then the receiving panel is cut into several splicing plates, and the cutting line of the splicing plate extends from the outside of the receiving panel to the matching hole and the cutting line is located in the radial direction of the matching hole, and a fixing mechanism for fixing adjacent splicing plates is provided between adjacent splicing plates.

[0013] In the present scheme, a matching hole with the same diameter as the electrode is cut on the receiving panel, and then the receiving panel is cut into several splicing plates along the radial direction of the matching hole, so that when cleaning the weld nodule on the electrode, the splicing plates can be spliced ​​into receiving panels surrounding the electrode, and the receiving panels are used to block the gap between the electrode and the crucible; at the same time, the spliced ​​splicing plates can be fixed by a fixing mechanism, so that during the process of cleaning the weld nodule, the splicing plates can stably remain in the state of being spliced ​​into receiving panels, so as to stably receive the weld nodule.

[0014] Preferably, as an improvement, a laser cutting method is used to cut the receiving panel.

[0015] In this solution, a laser cutting method is adopted to cut the receiving panel, which is simple to process and can accurately process the matching holes.

[0016] Preferably, as an improvement, the fixing mechanism includes two mutually attracting permanent magnets, and the two permanent magnets are respectively fixedly connected to adjacent splicing plates.

[0017] In this solution, two mutually attracting permanent magnets are used to quickly fix adjacent two splicing plates, and the structure is simple and the assembly is very convenient.

[0018] Preferably, as an improvement, an arc-shaped baffle is fixedly connected to the top of the splicing plate, and the arc-shaped baffle is located at the side where the splicing plate is in contact with the electrode.

[0019] In this solution, by providing the arc-shaped baffle, when the splicing plates are spliced into a receiving panel, the arc-shaped baffle is in contact with the outer wall of the electrode, and the arc-shaped baffle can be used to partition the included angle space where the receiving panel is in contact with the electrode, so as to prevent the weld beads received from accumulating in the included angle space where the receiving panel is in contact with the electrode, so as to avoid the weld beads in this included angle space falling into the gap between the electrode and the crucible when the splicing plate is disassembled later.

[0020] Preferably, as an improvement, the number of the arc-shaped baffles is several, the bending radius inside several arc-shaped baffles is equal to the bending radius of the outer walls of several types of electrodes, and the arc-shaped baffles are detachably connected to the splicing plates.

[0021] In this solution, by providing a plurality of arc-shaped baffles detachably connected to the splicing plates, and the bending radius inside the arc-shaped baffles is equal to the bending radius of the outer walls of the electrodes, the side wall inside the arc-shaped baffles can be in contact with the outer wall of the electrode, so as to prevent the weld beads from falling into the crucible due to the gap between the arc-shaped baffle and the electrode. Each arc-shaped baffle is set to match one of the electrode models among a plurality of different types of electrodes, so that different arc-shaped baffles can be replaced according to different electrode models in this solution, so as to use the same receiving panel to collect the weld beads of different types of electrodes.

[0022] Preferably, as an improvement, the thickness of the arc-shaped baffle is 2-4 mm, the height is 5-10 mm, and a downward inclined surface is provided on the outer side wall of the top of the arc-shaped baffle.

[0023] In this solution, the thickness of the arc-shaped baffle is 2-4 mm and the height is 10-15 mm. The thickness of the arc-shaped baffle is small and the height is high, which can effectively partition the weld beads at the receiving panel and the electrode; a downward inclined surface is provided on the outer side wall of the top of the arc-shaped baffle, reducing the included angle space that can accommodate the weld beads formed between the top of the arc-shaped baffle and the side surface of the electrode, which is beneficial to all the weld beads falling into the receiving panel to be stably received and collected, and reducing the risk of the weld beads falling into the gap between the electrode and the crucible.

[0024] Preferably, as an improvement, an insertion mechanism is provided between adjacent splicing plates. The insertion mechanism includes an insertion rod and an insertion hole that are inserted into each other. The insertion rod is fixed to one of the splicing plates, and the insertion hole is formed in the other splicing plate.

[0025] In this solution, through the insertion rod and the insertion hole that are inserted into each other, when the splicing plates are spliced into a receiving panel, the splicing plates can be further kept in a state of being spliced with each other. During use, the splicing plates are not easily separated from each other. At the same time, the structures of the insertion rod and the insertion hole are simple and convenient to process. During the process of splicing the splicing plates with each other, the insertion rod can also play a guiding role for the splicing plates, enabling two adjacent splicing plates to complete the splicing operation quickly and accurately.

[0026] Preferably, as an improvement, the shielding mechanism includes a shielding plate fixedly connected to the outside of the splicing plate.

[0027] In this solution, by fixedly connecting a shielding plate that extends upward along the outer edge of the splicing plate, after all the splicing plates are spliced with each other to form a receiving panel, the shielding plate can shield the edge of the receiving panel, so that when the welded beads to be cleaned fall onto the receiving panel, they will not fall outside the receiving panel, which is beneficial to keeping the environment around the electrode and the crucible clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of Embodiment 1 of the present invention.

[0029] Figure 2 is Figure 1 an exploded view of.

[0030] Figure 3 It is a schematic connection diagram of a splicing plate, a shielding plate, and an arc-shaped baffle in Embodiment 2 of the present invention.

[0031] Figure 4 It is an exploded view of the connection between an arc-shaped baffle and a splicing plate in Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following is further detailed through specific embodiments:

[0033] The reference numerals in the accompanying drawings of the specification include: splicing plate 1, permanent magnet 2, shielding plate 3, insertion rod 4, chamfer 401, handle 5, arc-shaped baffle 6, inclined surface 601, crucible 7, electrode 8, extension plate 9, splicing rod 10.

[0034] Embodiment 1

[0035] This embodiment is as shown in the attached Figure 1 and Figure 2 : The method for inspecting a titanium alloy vacuum consumable electrode welding is as follows:

[0036] Step 1: Before inspection, install the spliced assembly components on the top of the crucible 7 in the prior art. In this embodiment, the assembly components include two splicing plates 1 located in the same plane. The splicing plates 1 form a flat structure as the bearing panel. A semi-circular through groove is opened at the side where the two splicing plates 1 are spliced. The two semi-circular through grooves enclose a mating hole with the same diameter as the electrode 8. When the two splicing plates 1 are spliced with each other and placed on the top of the crucible 7, the electrode 8 is located in the mating hole, and the bearing panel blocks the gap between the electrode 8 and the crucible 7. In this embodiment, the manufacturing method of the assembly components is as follows. First, use a stainless steel plate with a thickness of 5-10 mm as the bearing panel. The bearing panel can be circular or rectangular, and the area of the bearing panel is larger than the circular cross-sectional area of the electrode. Cut a mating hole with a diameter equal to the diameter of the electrode at the center of the bearing panel. Then, cut from the outer wall of the bearing panel towards the mating hole. The cutting direction is along the radius direction of the mating hole, and the bearing panel is cut into several splicing plates 1, so that the subsequent several splicing plates 1 can be spliced to block the gap between the electrode 8 and the crucible 7. In this embodiment, the bearing panel is cut by laser cutting.

[0037] Step 2: Conduct inspection. After the splicing plates 1 are spliced into the bearing panel, manually inspect the welding position of the electrode 8, mainly checking whether the welding quality meets the requirements and whether the welding part needs to be cleaned of welding beads. If there are welding beads at the welding part, manually use a grinding machine or other machinery to remove the welding beads. The removed welding beads fall down onto the bearing panel. Since the bearing panel blocks the gap between the crucible 7 and the electrode 8, when the welding beads fall down, they will not enter the crucible 7, thus avoiding the influence on subsequent melting caused by the welding beads falling into the crucible 7.

[0038] Step 3: Remove the assembly components. After the welding beads on the electrode 8 are cleaned and the inspection is completed, manually remove the welding beads received in the bearing panel (it can be manually removed or removed by sticking with a wet cotton cloth, etc.), and then split the two splicing plates 1. Without moving the electrode 8, complete the inspection of the electrode 8 and remove the welding beads.

[0039] As Figure 2 shown, in this embodiment, in order to enable the two splicing plates 1 to always remain in a spliced state during the process of cleaning the welding beads, a fixing mechanism for fixing the two splicing plates 1 is provided between the two splicing plates 1. The fixing mechanism includes two mutually attracting permanent magnets 2. The two permanent magnets 2 are respectively fixedly connected to the opposite side walls of the two splicing plates 1 by screws. When the two splicing plates 1 are spliced with each other, the two permanent magnets 2 attract each other to fix the two splicing plates 1 to each other, thus avoiding the situation that the two splicing plates 1 are separated from each other during the process of cleaning the welding beads and causing the welding beads to fall into the gap between the crucible 7 and the electrode 8.

[0040] Meanwhile, in order to enable the bearing panel spliced by the two splicing plates 1 to better bear the removed welding beads, in this embodiment, before the inspection in step two, a shielding mechanism is connected to the outside of the splicing plate 1. The shielding mechanism is a shielding plate 3 integrally formed on the outside of the splicing plate 1. After the two splicing plates 1 are spliced together, the two shielding plates 3 shield the periphery of the bearing panel, so as to laterally block the welding beads falling on the bearing panel by using the shielding plate 3, and avoid the situation that the welding beads splash outside the bearing panel after falling on the bearing panel.

[0041] In order to complete the assembly of the splicing plate 1 more accurately and quickly, and at the same time improve the stability of the splicing plate 1 after splicing, an insertion mechanism is provided between the two splicing plates 1. The insertion mechanism includes an insertion rod 4 and an insertion hole that are inserted into each other. The insertion rod 4 is welded to the right side wall of the left splicing plate 1, and a chamfer 401 is provided at the right end of the insertion rod 4. The insertion hole is provided on the left side wall of the right splicing plate 1. When assembling the two splicing plates 1, the chamfer 401 at the end of the insertion rod 4 provides guidance, so that the insertion rod 4 can be inserted into the insertion hole more quickly, so that the two splicing plates 1 can be quickly and stably spliced; moreover, after the two splicing plates 1 are spliced into a bearing panel, since the insertion rod 4 is in the state of being inserted into the insertion hole, the insertion rod 4 can bear the vertical pressure, so that the two can also stably maintain the splicing with each other when subjected to vertical force and play a role in bearing the welding beads. At the same time, in order to more conveniently push and pull the splicing plate 1 to complete the splicing and disassembly of the bearing panel, a handle 5 is fixedly connected to the outer wall of the shielding plate 3 by screws.

[0042] In this embodiment, by splicing the splicing plates 1 into a bearing panel, the gap between the crucible 7 and the electrode 8 is shielded by using the bearing panel, so that when inspecting the welding quality of the electrode 8 and removing the welding beads, the welding beads are prevented from falling into the gap between the crucible 7 and the electrode 8, thereby avoiding the negative impact of the welding beads on the subsequent capacity and effectively improving the quality of the ingot.

[0043] Embodiment 2

[0044] The difference between Embodiment 2 and Embodiment 1 is that as Figure 3 shown, in this embodiment, an arc-shaped baffle 6 that matches the outer wall of the electrode 8 is welded at the top edge of the splicing plate 1. The thickness of the arc-shaped baffle 6 is 2-4 mm, and the height is 5-10 mm. Preferably, the thickness is 3 mm and the height is 8 mm. And an inclined surface 601 that inclines towards the outside of the splicing plate 1 is provided at the top of the arc-shaped baffle 6.

[0045] After the two splicing plates 1 are spliced with each other and the electrode 8 is located in the mating hole, when the welding bead is cleaned and falls downward onto the receiving panel, the welding bead may fall into the angular space where the splicing plate 1 contacts the electrode 8, making it inconvenient to clean the welding bead in this secondary space. Moreover, when the two splicing plates 1 are separated from each other later, the welding bead remaining in the angular space may fall downward into the gap between the crucible 7 and the electrode 8. In this embodiment, due to the presence of the arc-shaped baffle 6 and the inclined surface 601, the welding bead automatically falls into the angular space formed by the arc-shaped baffle 6 and the splicing plate 1, so as to prevent the welding bead from falling into the gap between the crucible 7 and the electrode 8 when the splicing plates 1 are separated from each other, ultimately improving the quality of the ingot.

[0046] Embodiment 3

[0047] The difference between Embodiment 3 and Embodiment 2 is that as Figure 4 shown, the number of arc-shaped baffles 6 is several ( Figure 4 three arc-shaped baffles 6 are shown in

[0048] the figure), the bending radius inside several arc-shaped baffles 6 is equal to the bending radius of the outer walls of several types of electrodes 8, and the arc-shaped baffles 6 are detachably connected to the splicing plate 1, so that different arc-shaped baffles 6 in this embodiment can block different types of electrodes 8.

[0049] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A method for inspecting the welding of titanium alloy vacuum consumable electrodes, characterized in that: The inspection steps are as follows: Step 1: Before inspection, install the spliced assembly components on the top of the crucible. The assembly components are attached to the outer wall of the electrode, and the gaps between the electrode and the crucible are blocked by the assembly components. The manufacturing method of the assembly components is as follows: Cut a fitting hole with a diameter equal to the diameter of the electrode on a receiving panel with a cross-sectional area larger than that of the electrode. Then, cut the receiving panel into several splicing plates. The cutting lines for cutting the splicing plates extend from the outside of the receiving panel to the fitting hole and are located in the radial direction of the fitting hole. A fixing mechanism for fixing adjacent splicing plates is provided between adjacent splicing plates. An arc-shaped baffle is connected to the top of the splicing plate, and the arc-shaped baffle is located at the side where the splicing plate is attached to the electrode. The thickness of the arc-shaped baffle is 2-4 mm, and the height is 5-10 mm. A downward inclined surface is formed on the outer wall of the top of the arc-shaped baffle facing outward. The number of the arc-shaped baffles is several, and the bending radius inside the several arc-shaped baffles is equal to the bending radius of the outer walls of several types of electrodes. The arc-shaped baffles are detachably connected to the splicing plates, so that different arc-shaped baffles can block different types of electrodes; Step 2: Conduct an inspection. Inspect the welding position of the electrode, remove the welding bead, and the removed welding bead falls onto the assembly components; Step 3: Remove the assembly components. After the inspection is completed, clean the welding beads received on the assembly components, and then remove the assembly components.

2. The method for inspecting the welding of titanium alloy vacuum consumable electrodes according to claim 1, characterized in that: A shielding mechanism is provided on the outside of the assembly components to horizontally block the welding beads that fall onto the assembly components.

3. The method for inspecting the welding of titanium alloy vacuum consumable electrodes according to claim 1, characterized in that: The receiving panel is cut by laser cutting.

4. The method for inspecting the welding of titanium alloy vacuum consumable electrodes according to claim 1, characterized in that: The fixing mechanism includes two mutually attracting permanent magnets, and the two permanent magnets are respectively fixedly connected to adjacent splicing plates.

5. The method for inspecting the welding of titanium alloy vacuum consumable electrodes according to claim 1, characterized in that: An insertion mechanism is provided between adjacent splicing plates. The insertion mechanism includes an insertion rod and an insertion hole that are inserted into each other. The insertion rod is fixed to one of the splicing plates, and the insertion hole is formed in the other splicing plate.

6. The method for inspecting the welding of titanium alloy vacuum consumable electrodes according to claim 2, characterized in that: The shielding mechanism includes a shielding plate fixedly connected to the outside of the splicing plate.

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