| 摘要 |
PURPOSE:To reduce the cost of equipments by providing a moving electron beam generating part outside a welding chamber and by arranging the moving base of the body to be welded inside the welding chamber. CONSTITUTION:An electron beam generating device 2c and moving base 10 are arranged outside a welding chamber 9 and made movable with keeping the welding chamber 9 in vacuum by the evacuation device 5 of the inside of the welding chamber 9. The moving base 11 to move the body 1 to be welded is also arranged inside the welding chamber 9. The electron beam generating part 2c is made to have the moving quantity of each 1/2l2 against the center of the chamber 9 and the moving quantity l3 of the moving base 11 is equalized to the l2. The values of these l2, l3 are taken as the half of the length l1 of the body to be welded. It therefore becomes sufficient to make the length of the welding chamber (l1+l3). Namely the length of chamber 9 will do at about 1.5 times of the length of the body 1 to be welded. The equipments of welding chamber 9, evacuation device 5,etc. become smaller as well with this method and the equipment cost is reduced. |
