A Flame Cutting Technology of Thick Steel Plate
A flame cutting, thick steel plate technology, applied in the field of cutting process, flame cutting process, to achieve the effect of ensuring full combustion, easy cleaning and smooth cutting
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Embodiment 1
[0016] The steel plate steel type Q345B flame-cut in this embodiment has a cutting size of 60×2200×9000. It is cut by a flame cutting machine. Before cutting, the track and the cutting machine are confirmed, and the length of the flame is adjusted at the same time. The length of the flame is generally 10cm to ensure The approximate ratio of the red flame (white flame) to the blue flame is 1:9; control the cutting oxygen flow relative to the vertical cutting torch to be 5° behind; and set the speed of the cutting machine to cut at 260mm / min. Observe the cutting process, the cutting is smooth and there is no blasting phenomenon. When the cutting speed is too fast, adjust the spark beam to shift in the opposite direction, and adjust the spark beam to be parallel to the cutting oxygen flow to determine the normal cutting speed. The size was rechecked. After measurement, the cutting width was set at 5mm, and the length was set at 12mm, which met the requirements of cutting quality ...
Embodiment 2
[0018] In this example, the flame cutting steel plate steel grade is 12MnNiVR, the cutting size is 18×2440×12900, and the flame cutting machine is used for cutting. Before cutting, the track and cutting machine are confirmed. The flame length is adjusted at 10cm, and the flame length is compared with the red flame (white) The approximate ratio of the blue flame to the blue flame is 1.2:10, and the cutting torch that controls the cutting oxygen flow is relatively vertical to the rear 4°; the speed of the cutting machine is set to 320mm / min for cutting, and the cutting machine runs smoothly during the cutting process. When the cutting speed is too fast, adjust the spark beam to shift in the opposite direction, and adjust the spark beam to be parallel to the cutting oxygen flow to determine the normal cutting speed. There is no gunshot phenomenon at the part, and the cutting slag at the edge falls off naturally. The cutting width is 5mm and the cutting length is 11mm, which meets ...
Embodiment 3
[0020] In this example, the flame cuts the steel plate steel grade NSM30, the cutting size is 100×2100×8000, the cutting requirement is to cut both ends, and the flame cutting machine is used for cutting, and the track and the cutting machine are confirmed before cutting. The flame length is adjusted at 12cm, and the flame length The approximate ratio of red flame (white flame) to blue flame is 1.5:10.5, and the cutting oxygen flow is controlled to be 3° backward relative to the vertical cutting torch; the cutting machine speed is set to 200mm / min for cutting, and the steel plate is cut at the same time Preheat 2 times. When the cutting speed is too fast, adjust the spark beam to shift in the opposite direction, and adjust the spark beam to be parallel to the cutting oxygen flow to determine the normal cutting speed. The scale is 4mm, the length is 12mm, the quality of the cutting edge is smooth, and there is no phenomenon of blasting.
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