Method for measuring interference of magnetic field on track of vacuum electron beam

Abstract

The invention discloses a method for measuring the interference of a magnetic field on the track of a vacuum electron beam, which comprises the following steps: rotating a faceplate of a rotating shaft of an electron beam welding machine to 90 degrees, placing a target table for clamping a welding test plate near the faceplate, fixing the welding test plate on the target table, and after a vacuum chamber of the electron beam welding machine is vacuumized, opening an isolating valve of an electronic gun, and rotating the faceplate; opening an electron beam, and enabling beam spots formed in a way that the electron beam is focused on the surface of the welding test plate to form a motion track, wherein if the motion track of the electron beam forms a point on the titanium alloy welding test plate, the fact proves that no magnetic field exists in the vacuum chamber of the electron beam welding machine and the measuring is ended, and if the motion track of the electron beam forms an irregular closed curve on the titanium alloy welding test plate, the fact proves that a magnetic field exists in the vacuum chamber of the electron beam welding machine; and through measuring the maximum boundary value of the closed curve, determining whether the magnetic field in the vacuum chamber is in the tolerance range of welding.

Description

technical field

[0001] The invention relates to a method for measuring the interference of a magnetic field on the trajectory of a vacuum electron beam. Background technique

[0002] In recent years, vacuum electron beam welding technology has been widely used in advanced engine and aircraft industries due to its high energy density and excellent weld quality, and has achieved huge economic and social benefits. Compared with other methods of fusion welding, electron beam welding has the following advantages: (1) high power density, small beam diameter, can form deep and narrow welds, and the depth-to-width ratio of welds can reach 30:1, reducing the deformation of the workpiece Extremely small, the heat-affected zone of the weld is very narrow; (2) Highly focused electron beam, with low heat input, can weld special refractory metals, metals with strong heat sensitivity and dissimilar metal materials that are difficult to weld in general fusion welding; (3) Electronics The b...

Examples

Embodiment 1

[0020] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0021] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0022] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target stage 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 20 mm.

[0023] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test...

Embodiment 2

[0029] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0030] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0031] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target stage 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 50mm.

[0032] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test ...

example 3

[0038] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0039] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0040] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target table 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 40mm.

[0041] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test ...

technical field

[0001] The invention relates to a method for measuring the interference of a magnetic field on the trajectory of a vacuum electron beam. Background technique

[0002] In recent years, vacuum electron beam welding technology has been widely used in advanced engine and aircraft industries due to its high energy density and excellent weld quality, and has achieved huge economic and social benefits. Compared with other methods of fusion welding, electron beam welding has the following advantages: (1) high power density, small beam diameter, can form deep and narrow welds, and the depth-to-width ratio of welds can reach 30:1, reducing the deformation of the workpiece Extremely small, the heat-affected zone of the weld is very narrow; (2) Highly focused electron beam, with low heat input, can weld special refractory metals, metals with strong heat sensitivity and dissimilar metal materials that are difficult to weld in general fusion welding; (3) Electronics The b...

Examples

Embodiment 1

[0020] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0021] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0022] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target stage 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 20 mm.

[0023] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test...

Embodiment 2

[0029] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0030] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0031] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target stage 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 50mm.

[0032] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test ...

example 3

[0038] This embodiment is a method for measuring the interference of the magnetic field on the trajectory of the electron beam, and the specific process is:

[0039] Step 1: Flip the faceplate of the rotation axis to 90°. When measuring, use the numerical control system of the electron beam welder to turn the faceplate 2 of the rotation axis of the vacuum electron beam welder to 90°;

[0040] Step 2: Install the target platform. Fix the target platform 4 of the clamping welding test plate on the electron beam welding machine on the workbench 5 of the vacuum electron beam welding machine, and keep 20 between the target platform and the face plate 2 of the vacuum electron beam welding machine rotating shaft. ~50mm spacing. In this embodiment, the distance between the target table 4 and the faceplate of the rotating shaft of the vacuum electron beam welding machine is 40mm.

[0041] The third step: Clamp the welding test plate. Take a non-magnetic titanium alloy welding test ...

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