Method for strengthening welding performance of tungsten/molybdenum and alloy thereof through rhenium element
A welding performance, molybdenum-rhenium alloy technology, applied in the direction of welding equipment, welding medium, welding equipment, etc., can solve the problems of difficult precise control of cooling speed, difficulty in assembly of added materials, restrictions, etc., to achieve grain size reduction, toughness and brittleness The effect of reducing the transition temperature and strengthening the weld performance
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Embodiment 1
[0045] 1) Fully grind the tungsten welding surface, and clean it until the contact surface is smooth and clean;
[0046] 2) Molybdenum-rhenium alloy wire is selected, and its surface is polished; the mass fraction of rhenium element in the molybdenum-rhenium alloy wire is 30%;
[0047] 3) The tungsten welding surface is connected, and the molybdenum-rhenium alloy wire is wound around the weld, and placed in a vacuum of 1×10 -3 In the Pa environment, the laser welding method is used to melt the molybdenum-rhenium alloy wire, and the welding seam forms a molten pool; the laser welding laser power is 1800w, the spot diameter of the laser beam on the area to be welded is 0.5mm, and the welding speed is 1.5m / min.
[0048] 4) Simultaneously perform ultrasonic oscillation on the molten pool, the ultrasonic oscillation frequency is 35kHz, and the ultrasonic oscillation time is 20min, so that the rhenium element is evenly mixed into the molten pool;
[0049] 5) Carry out heat treatmen...
Embodiment 2
[0051] 1) Fully grind the molybdenum welding surface, and clean it until the contact surface is smooth and clean;
[0052] 2) Molybdenum-rhenium alloy wire is selected, and its surface is polished; the mass fraction of rhenium element in the molybdenum-rhenium alloy wire is 10%;
[0053] 3) The molybdenum welding surface is connected, the molybdenum-rhenium alloy wire is wound around the weld, and the vacuum degree is 1×10 -4In the Pa environment, the laser welding method is used to melt the molybdenum-rhenium alloy wire, and the welding seam forms a molten pool; the laser welding laser power is 1500w, the spot diameter of the laser beam on the area to be welded is 0.6mm, and the welding speed is 1m / min.
[0054] 4) Simultaneously perform ultrasonic oscillation on the molten pool, the ultrasonic oscillation frequency is 30kHz, and the ultrasonic oscillation time is 30min, so that the rhenium element is evenly mixed into the molten pool;
[0055] 5) Carry out heat treatment on...
Embodiment 3
[0057] 1) Fully grind the tungsten alloy welding surface, and clean it until the contact surface is smooth and clean;
[0058] 2) Molybdenum-rhenium alloy wire is selected, and its surface is polished; the mass fraction of rhenium element in the molybdenum-rhenium alloy wire is 10-45%;
[0059] 3) The tungsten alloy welding surface is connected, the molybdenum-rhenium alloy wire is wound around the welding seam, and the vacuum degree is 1×10 -3 ~1×10 -4 In Pa or argon protection environment, use laser welding method to melt molybdenum-rhenium alloy wire, and the welding seam forms a molten pool; the laser welding laser power is 1600w, the spot diameter of the laser beam on the area to be welded is 0.8mm, and the welding speed is 1.2 m / min.
[0060] 4) Simultaneously perform ultrasonic oscillation on the molten pool, the ultrasonic oscillation frequency is 40kHz, and the ultrasonic oscillation time is 25min, so that the rhenium element is evenly mixed into the molten pool;
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