CN110977121A - Clamping device for welding titanium ingot and method for welding titanium ingot by using clamping device - Google Patents
Clamping device for welding titanium ingot and method for welding titanium ingot by using clamping device Download PDFInfo
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- CN110977121A CN110977121A CN201911302679.9A CN201911302679A CN110977121A CN 110977121 A CN110977121 A CN 110977121A CN 201911302679 A CN201911302679 A CN 201911302679A CN 110977121 A CN110977121 A CN 110977121A
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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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
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Abstract
The invention belongs to the technical field of titanium and titanium alloy smelting, and relates to a clamping device for titanium ingot welding and a method for welding a titanium ingot by using the clamping device. Fixing a titanium alloy primary ingot assembly on a squirrel-cage fixture, vacuumizing and filling argon in a welding chamber, and welding by using a plasma welding mode; by adjusting the parameters of the plasma welding gun and adjusting the relative positions of the titanium alloy primary ingot assembly and the plasma welding gun, plasma welding of the circumferential weld of the titanium alloy primary ingot is realized, and the welding quality of the titanium alloy primary ingot is improved. The whole welding method is simple and convenient to operate, and the application range of the plasma welding gun is expanded.
Description
Technical Field
The invention belongs to the technical field of titanium and titanium alloy smelting, and relates to a clamping device for titanium ingot welding and a method for welding a titanium ingot by applying the clamping device.
Background
When a titanium ingot is melted by vacuum consumable electrode arc melting (VAR method), in order to make the chemical composition uniform, it is common to perform secondary melting using an ingot obtained by primary melting as a consumable electrode. In actual production, in order to improve efficiency, two to three primary ingots are generally welded together in secondary smelting. In production practice, the welding of the primary ingot is often carried out in a vacuum consumable arc furnace (VAR furnace). When a primary ingot is welded in a VAR furnace, due to the uneven flat head and flat bottom quality of the primary ingot, the reliability of electrode alignment, the stability of a welding process and other factors, welding seams are unevenly distributed, so that the current at the welding seams is uneven during secondary smelting, further blocks fall off, and the problem of uneven distribution of secondary ingots is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a clamping device for welding a titanium ingot and a method for welding the titanium ingot by using the clamping device.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the invention provides a clamping device for titanium ingot casting welding, which comprises a plurality of squirrel-cage clamps, wherein each squirrel-cage clamp comprises an upper half clamp and a lower half clamp, and a titanium alloy primary ingot assembly is arranged between the upper half clamp and the lower half clamp; the upper half clamp and the lower half clamp are detachably connected.
Further, the upper half clamp and the lower half clamp are fixedly connected through bolts and nuts.
Furthermore, the number of the squirrel-cage clamps is two or more, and the adjacent squirrel-cage clamps are fixedly connected with each other through the tensioning bolts and the locking nuts.
Further, the bottom of the lower half part clamp is also provided with a jacking screw rod.
Further, the titanium alloy primary ingot assembly is fixedly placed on the movable welding roller frame through a squirrel-cage fixture and is tightly jacked by matching with the transition rod and the jacking device.
Furthermore, one end of the transition rod is abutted against the end part of the squirrel-cage fixture, and the other end of the transition rod is connected with the jacking device.
Further, the jacking device is a hydraulic jacking device.
Further, the titanium alloy primary ingot assembly comprises at least two titanium alloy primary ingots.
On the other hand, the invention also provides a method for welding the titanium ingot by applying the clamping device for welding the titanium ingot, which comprises the following steps:
1) fixedly placing the titanium alloy primary ingot assembly on a movable welding roller frame through the clamping device for titanium ingot casting welding, and placing the titanium alloy primary ingot assembly into a welding chamber;
2) adjusting the seam position of the titanium alloy primary ingot assembly to be aligned with the plasma welding gun, and descending the plasma welding gun;
3) closing the welding chamber door, vacuumizing to 1Pa, and starting argon filling until the pressure of the argon is greater than 8000 Pa;
4) adjusting parameters of the plasma welding gun, and starting welding when the welding current reaches 350-500A and the welding voltage reaches 55-90V;
5) moving the titanium alloy primary ingot assembly along the direction parallel to the axis thereof by a distance L1 to form a first welding seam;
6) rotating the titanium alloy primary ingot assembly by the angle omega, and then moving the titanium alloy primary ingot assembly in the reverse direction by the distance L2 to form a second welding line;
7) and repeating the steps 5) and 6) until the welding area of the titanium alloy primary ingot assembly reaches 70% of the whole circumference, wherein the whole circumference is the joint area of two adjacent titanium alloy primary ingots.
Further, a titanium alloy primary ingot assembly is placed on the movable welding roller frame, is fixedly placed on the movable welding roller frame through a squirrel cage type clamp and is tightly jacked by matching with a transition rod and a hydraulic jacking device; one end of the transition rod is abutted against the end part of the squirrel-cage fixture, and the other end of the transition rod is connected with the jacking device.
Further, the step 6) is realized by rotating the titanium alloy primary ingot assembly by the angle ω through the following steps: and driving a movable welding roller frame to rotate by using a servo motor, wherein the movable welding roller frame drives a titanium alloy primary ingot assembly to rotate.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: fixing a titanium alloy primary ingot on a squirrel-cage fixture, vacuumizing and filling argon in a welding chamber, and welding by using a plasma welding mode; by adjusting the parameters of the plasma welding gun and adjusting the relative positions of the primary titanium alloy ingot and the plasma welding gun, plasma welding of the circumferential weld of the primary titanium alloy ingot is realized, and the welding quality of the primary titanium alloy ingot is improved. The whole welding method is simple and convenient to operate, and the application range of the plasma welding gun is expanded.
Drawings
FIG. 1 is a schematic flow chart of a method for welding a titanium ingot by using a clamping device for welding the titanium ingot, which is provided by the invention;
FIG. 2 is a schematic structural diagram of a squirrel cage fixture used in the present invention;
FIG. 3 is an application installation schematic diagram of the titanium alloy primary ingot welding performed by the clamping device for titanium ingot welding provided by the invention;
FIG. 4 is a diagram illustrating the welding effect of the titanium alloy primary ingot by using the clamping device for welding titanium ingots.
Wherein: 1. a welding chamber; 2. a plasma welding gun; 3. a movable welding roller frame; 4. a titanium alloy primary ingot; 5. a squirrel cage fixture; 6. a transition rod; 7. a hydraulic jacking device; 8. an upper clamp; 9. a lower half clamp; 10. a bolt; 11. a nut; 12. tightly pushing the screw; 13. tightening the bolts; 14. and locking the nut.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Example (b):
referring to fig. 2, the invention provides a clamping device for titanium ingot welding, which comprises a plurality of squirrel-cage clamps 5, wherein each squirrel-cage clamp 5 comprises an upper half clamp 8 and a lower half clamp 9, and a titanium alloy primary ingot assembly 4 is arranged between the upper half clamp 8 and the lower half clamp 9; the upper clamp 8 and the lower clamp 9 are detachably connected.
Further, the upper half jig 8 and the lower half jig 9 are fixedly connected by a bolt 10 and a nut 11.
Furthermore, the number of the squirrel-cage clamps 5 is two or more, and the adjacent squirrel-cage clamps 5 are fixedly connected through the tension bolts 13 and the locking nuts 14.
Further, the bottom of the lower half clamp 9 is also provided with a tightening screw 12.
Further, the titanium alloy primary ingot assembly 4 is fixedly placed on the movable welding roller frame 3 through a squirrel cage type clamp 5, and is matched with a transition rod 6 and a jacking device 7 for jacking.
Furthermore, one end of the transition rod 6 is abutted against the end of the squirrel-cage fixture 5, and the other end is connected with the jacking device 7.
Further, the tightening device 7 is a hydraulic tightening device.
Further, the titanium alloy primary ingot assembly 4 includes at least two titanium alloy primary ingots.
Referring to fig. 1, the invention provides a method for welding a titanium ingot by using a clamping device for welding the titanium ingot, which specifically comprises the following steps:
1) fixedly placing a titanium alloy primary ingot assembly 4 on a movable welding roller frame 3 through a clamping device for titanium ingot casting welding, and placing the titanium alloy primary ingot assembly into a welding chamber 1;
2) adjusting the seam position of the titanium alloy primary ingot assembly 4 to be aligned with the plasma welding gun 2, and descending the plasma welding gun 2;
3) closing a welding chamber 1 door, starting argon filling when vacuumizing to 1Pa until the pressure of argon is more than 8000 Pa;
4) adjusting parameters of the plasma welding gun 2, and starting welding when the welding current reaches 350-500A and the welding voltage reaches 55-90V;
5) moving the titanium alloy primary ingot assembly 4 along the direction parallel to the axis thereof by a distance L1 to form a first welding seam;
6) rotating the titanium alloy primary ingot assembly 4 by the angle omega, and then moving the titanium alloy primary ingot assembly in the reverse direction by the distance L2 to form a second welding line;
7) and repeating the steps 5) and 6) until the welding area of the titanium alloy primary ingot assembly 4 reaches 70% of the whole circumference, wherein the whole circumference is the joint area of two adjacent titanium alloy primary ingots.
Further, in the step 1), a titanium alloy primary ingot component 4 to be welded is placed in the welding chamber 1, the adopted device is a movable welding roller frame 3, the titanium alloy primary ingot component 4 is placed on the movable welding roller frame 3, the titanium alloy primary ingot component 4 is fixedly placed on the movable welding roller frame 3 through a squirrel cage type clamp 5, and the titanium alloy primary ingot component is tightly jacked by matching with a transition rod 6 and a hydraulic jacking device 7; one end of the transition rod 6 is abutted against the end part of the squirrel-cage fixture 5, and the other end is connected with the jacking device 7.
Further, in the step 6), rotating the titanium alloy primary ingot assembly 4 by the angle omega, and the method comprises the following steps: a servo motor is used for driving the movable welding roller carrier 3 to rotate, and the movable welding roller carrier 3 drives the titanium alloy primary ingot component 4 to rotate.
In summary, the clamping device for welding titanium ingots provided by the invention is used for welding titanium alloy primary ingots by using the method for welding titanium alloy primary ingots, and the method is combined with fig. 3-4 to show the following specific processes:
firstly, opening a door of a welding chamber 1 and opening a movable welding roller frame 3;
secondly, placing a lower half clamp 9 of a squirrel-cage clamp 5 on a movable welding roller frame 3, respectively hoisting a titanium alloy primary ingot assembly 4, placing the titanium alloy primary ingot assembly on the lower half clamp 9, adjusting a jacking screw 12, aligning two or more titanium alloy primary ingots, aligning the axes of the titanium alloy primary ingots and tightly attaching the end faces of the titanium alloy primary ingots, buckling an upper half clamp 8 of the squirrel-cage clamp, and locking the upper half clamp with a bolt 10 and a nut 11; in order to ensure the synchronism of two or more primary ingots and the squirrel-cage jigs 5 supported by the primary ingots when rotating along with the movable welding roller frame 3, the two squirrel-cage jigs 5 are tensioned by using tensioning bolts 13 and locking nuts 14; the titanium alloy primary ingot assembly 4 fixed on the squirrel-cage fixture 5 is tightly jacked by a hydraulic jacking device 7, and is manually locked by a locking device on the movable welding roller frame 3;
thirdly, the mobile welding roller frame 3 drives the squirrel-cage fixture 5 and the titanium alloy primary ingot assembly 4 to enter a welding station in the welding chamber 1, the seam position of the titanium alloy primary ingot assembly 4 is aligned with the plasma welding gun 2, the plasma welding gun 2 is lowered, and the proper distance between the plasma welding gun 2 and the seam position of the titanium alloy primary ingot assembly 4 is ensured;
then, closing a welding chamber door, vacuumizing, starting argon filling when the pressure of argon is 1Pa, and starting plasma welding when the pressure of the argon is more than 8000 Pa; visually observing, adjusting parameters such as voltage, current, argon flow and the like at the plasma welding gun 2 to ensure that the welding current reaches 350-500A, the welding voltage reaches 55-90V, the arc starting condition of plasma arc is reached, and welding is started;
finally, the movable welding roller frame 3 moves for a distance L1 along the direction parallel to the axis to form a welding seam, then the movable welding roller 3 drives the titanium alloy primary ingot assembly 4 to rotate for a certain angle omega, and then moves reversely for a distance L2 to form another welding seam, and on the contrary, the welding area reaches 70% of the whole circumference. The rotation of the movable welding roller frame 3 can be driven by a servo motor, so that the titanium alloy primary ingot assembly 4 can be accurately rotated by a certain angle, and the welding area can be ensured to reach 70% of the whole circumference.
Therefore, in the whole welding process, the plasma welding gun 2 is fixed, and the titanium alloy primary ingot assembly 4 moves relative to the plasma welding gun 2 to form a welding seam. Fixing a titanium alloy primary ingot assembly 4 on a squirrel-cage fixture 5, vacuumizing and filling argon in a welding chamber, and welding by using a plasma welding mode; by adjusting the parameters of the plasma welding gun 2 and adjusting the relative positions of the titanium alloy primary ingot component 4 and the plasma welding gun 2, plasma welding of the circumferential weld of the titanium alloy primary ingot is realized, and the welding quality of the titanium alloy primary ingot is improved. The whole welding method is simple and convenient to operate, and the application range of the plasma welding gun is expanded.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The clamping device for titanium ingot casting welding is characterized by comprising a plurality of squirrel-cage clamps (5), wherein each squirrel-cage clamp (5) comprises an upper half clamp (8) and a lower half clamp (9), and a titanium alloy primary ingot component (4) is arranged between the upper half clamp (8) and the lower half clamp (9); the upper half clamp (8) and the lower half clamp (9) are detachably connected.
2. The clamping device for welding the titanium ingot according to claim 1, wherein the upper half clamp (8) and the lower half clamp (9) are fixedly connected through a bolt (10) and a nut (11).
3. The clamping device for welding the titanium ingot according to claim 1, wherein the number of the cage clamps (5) is two or more, and the adjacent cage clamps (5) are fixedly connected through the tension bolt (13) and the lock nut (14).
4. The clamping device for welding the titanium ingot according to claim 1, wherein the bottom of the lower half clamp (9) is also provided with a tightening screw rod (12).
5. The clamping device for welding the titanium ingot according to claim 1, wherein the titanium alloy primary ingot assembly (4) is fixedly placed on a movable welding roller frame (3) through a squirrel-cage type clamp (5) and is tightly jacked by matching with a transition rod (6) and a jacking device (7); one end of the transition rod (6) is abutted against the end part of the squirrel-cage clamp (5), and the other end of the transition rod is connected with the jacking device (7).
6. The clamping device for welding the titanium ingot according to claim 5, wherein the jacking device (7) is a hydraulic jacking device.
7. The clamping device for welding titanium ingots according to claim 1, wherein the titanium alloy primary ingot assembly (4) comprises at least two titanium alloy primary ingots.
8. A method for welding a titanium ingot by using the clamping device for welding the titanium ingot according to any one of claims 1 to 7 is characterized by comprising the following steps:
1) fixedly placing a titanium alloy primary ingot assembly (4) on a movable welding roller frame (3) through the clamping device for titanium ingot casting welding, and placing the titanium alloy primary ingot assembly into a welding chamber (1);
2) adjusting the seam position of the titanium alloy primary ingot assembly (4) to be aligned with the plasma welding gun (2), and descending the plasma welding gun (2);
3) closing a door of the welding chamber (1), starting argon filling when vacuumizing to 1Pa until the pressure of argon is more than 8000 Pa;
4) adjusting the parameters of the plasma welding gun (2), and starting welding when the welding current reaches 350-500A and the welding voltage reaches 55-90V;
5) moving the titanium alloy primary ingot assembly (4) along the direction parallel to the axis thereof by a distance L1 to form a first welding seam;
6) rotating the titanium alloy primary ingot assembly (4) by the angle omega, and then moving the titanium alloy primary ingot assembly in the reverse direction by the distance L2 to form a second welding line;
7) and repeating the steps 5) and 6) until the welding area of the titanium alloy primary ingot assembly (4) reaches 70% of the whole circumference, wherein the whole circumference is the joint area of two adjacent titanium alloy primary ingots.
9. The method for welding the titanium ingot by using the clamping device for welding the titanium ingot according to claim 8, wherein a titanium alloy primary ingot assembly (4) is placed on the movable welding roller frame (3), the titanium alloy primary ingot assembly (4) is fixedly placed on the movable welding roller frame (3) through a squirrel cage type clamp (5), and the titanium alloy primary ingot assembly is tightly jacked by matching with a transition rod (6) and a hydraulic jacking device (7); one end of the transition rod (6) is abutted against the end part of the squirrel-cage clamp (5), and the other end of the transition rod is connected with the jacking device (7).
10. The method for welding the titanium ingot by using the clamping device for welding the titanium ingot according to claim 8, wherein the step 6) is implemented by rotating the titanium alloy primary ingot assembly (4) by the angle omega by the following steps: a servo motor is used for driving a movable welding roller carrier (3) to rotate, and the movable welding roller carrier (3) drives a titanium alloy primary ingot assembly (4) to rotate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911302679.9A CN110977121A (en) | 2019-12-17 | 2019-12-17 | Clamping device for welding titanium ingot and method for welding titanium ingot by using clamping device |
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| CN201911302679.9A CN110977121A (en) | 2019-12-17 | 2019-12-17 | Clamping device for welding titanium ingot and method for welding titanium ingot by using clamping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112795767A (en) * | 2020-12-25 | 2021-05-14 | 西安聚能装备技术有限公司 | Stress relieving device for titanium alloy welding and using method thereof |
| CN114192933A (en) * | 2021-11-15 | 2022-03-18 | 成都先进金属材料产业技术研究院股份有限公司 | Vacuum consumable electrode welding device and method |
| CN117359075A (en) * | 2023-11-14 | 2024-01-09 | 宝鸡宝钛装备科技有限公司 | Vacuum electron beam welding equipment |
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