A method of laser-mig hybrid welding
A hybrid welding and laser technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as low production efficiency, cumbersome workpiece displacement process, high yield strength and tensile strength
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Embodiment 1
[0061] Such as figure 1 and figure 2 Shown, method of the present invention comprises the following steps:
[0062] Step 1. Processing of Q690 high-strength steel sample block:
[0063] Process the first Q690 high-strength steel sample 1 and the second Q690 high-strength steel sample 2; wherein, the first Q690 high-strength steel sample 1 includes a first horizontal part 1-1 and is integrally formed with the first horizontal part 1-1 The first right-angled trapezoidal part 1-2, the length of the bottom surface of the first right-angled trapezoidal part 1-2 is less than the length of the first horizontal part 1-1; the structure of the second Q690 high-strength steel sample 2 is the same, including the second The horizontal part 2-1 and the second right-angled trapezoidal part 2-2 integrally formed with the second horizontal part 2-1, the length of the bottom surface of the second right-angled trapezoidal part 2-2 is shorter than that of the second horizontal part 2-1 length...
Embodiment 2
[0113] In this embodiment, the difference from Embodiment 1 is that the horizontal spacing of the gap in step 301 is 2.2 mm, and the Nth gap in step 3043 2 The distance between the surface of the lower solder layer and the surface of the first horizontal part 1-1 and the second horizontal part 2-1 is 5.5 mm, and the Nth in step 3054 3 The distance from the surface of the upper solder layer to the Nth 2The distance between the surfaces of the lower solder layer is 4.5mm, the heat treatment temperature in step 4 is 525°C, and the heat treatment time is 3.5h;
[0114] The gas flow rate of the shielding gas is 22L / min, the distance between the laser head of the fiber laser and the bottom of the gap to be welded is 108mm, the power of the fiber laser is 2900W, and the distance between the laser emitted by the fiber laser and the end of the welding wire close to the gap to be welded The spacing is 3.2mm, the angle formed between the laser emitted by the fiber laser and the end of t...
Embodiment 3
[0121] In this embodiment, the difference from Embodiment 1 is that the horizontal spacing of the gap in step 301 is 2.5 mm, and the Nth gap in step 3043 2 The distance between the surface of the lower solder layer and the surface of the first horizontal part 1-1 and the second horizontal part 2-1 is 6 mm, and in step 3054, the Nth 3 The distance from the surface of the upper solder layer to the Nth 2 The distance between the surfaces of the lower solder layer is 6mm, the heat treatment temperature in step 4 is 550°C, and the heat treatment time is 3h;
[0122] The gas flow rate of the shielding gas is 25L / min, the distance between the laser head of the fiber laser and the bottom of the gap to be welded is 110mm, the power of the fiber laser is 3300W, and the distance between the laser emitted by the fiber laser and the end of the welding wire close to the gap to be welded The spacing is 3.5mm, the angle formed between the laser emitted by the fiber laser and the end of the w...
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Abstract
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