Plasma arc-laser hybrid welding method for high-sealing aluminum alloy rectangular chamber

A plasma arc-laser hybrid welding method for a high-sealing aluminum alloy rectangular chamber, comprising steps of:

• step (1):
• first clamping and assembling a No. 1 plate, a No. 3 plate, a No. 4 plate, a No. 5 plate, and a No. 6 plate into a rectangular chamber, retaining a No. 2 plate for the time being, and temporarily installing the No. 2 plate in the chamber;
• using predetermined welding process parameters to weld four internal welding seams of the No. 1 plate to the No. 3 plate, the No. 4 plate, the No. 5 plate and No. 6 plate;
• step (2):
• keeping a posture of the chamber unchanged, covering the No. 2 plate, and using the optimized welding process parameters to weld two external welding seams of the No. 2 plate to the No. 5 plate and the No. 6 plate;
• step (3):
• turning the chamber upside down to place the No. 2 plate at the bottom, so that the No. 2 plate is overlapped with the No. 3 plate, the No. 4 plate, the No. 5 plate, and No. 6 plate, and four internal welding seams of the No. 2 plate are all in a horizontal state;
• using the predetermined welding process parameters to weld four internal welding seams of the No. 2 plate to the No. 3, No. 4, No. 5 and No. 6 plates;
• step (4):
• adjusting the chamber to a posture where the No. 6 plate is placed at the bottom, and using the predetermined welding process parameters to weld two internal welding seams of the No. 6 plate to the No. 3 and No. 4 plates;
• step (5):
• adjusting the chamber to a posture where the No. 5 plate is placed at the bottom, and using the predetermined welding process parameters to weld two internal welding seams of the No. 5 plate to the No. 3 plate and the No. 4 plate, as well as one external welding seam of the No. 1 plate to the No. 6 plate;
• step (6):
• adjusting the chamber to a posture where the No. 6 plate is placed at the bottom, and using the predetermined welding process parameters to weld one welding seam of the No. 1 plate to the No. 5 plate;
• step (7):
• adjusting the chamber to a posture where the No. 3 plate is placed at the bottom, and using the predetermined welding process parameters to weld four external welding seams of the No. 4 plate to the No. 1 plate, the No. 2 plate, the No. 5 plate and the No. 6 plate;
• and
• step (8):
• adjusting the chamber to a posture where the No. 4 plate is placed at the bottom, and using the predetermined welding process parameters to weld four external welding seams of the No. 3 plate to the No. 1 plate, the No. 2 plate, the No. 5 plate and the No. 6 plate.