| 摘要 |
1. Process for tightly connecting very thin walled tube ends into thick tube support plates, the tube ends being introduced into the holes which are provided in the required number in the tube support plate, characterized in that the tube ends used have a wall thickness of from 0.05 to 3 mm, the tubes (4, 14, 19, 22) and tube support plates (5, 13, 18, 23) are made of a material which can be melted by ultrasound and in that a sonotrode (1, 9, 15) which oscillates in the axial direction in the region of ultrasound and the cross-sectional area of which in the region of contact (2, 11, 17) is at least greater than the internal cross-section of the tube end to be connected (4, 14, 19, 22) is moved coaxially towards the tube end (5, 13, 18, 19) which is to be connected to the tube support plate (5, 13, 18, 23) and said sonotrode (1, 9, 15) is brought into contact with the tube end by its contact surface (2, 11, 17), and a welding connection is formed between the tube end (4, 14, 19, 22) and the tube support plate (5, 13, 18, 23) under the axial pressure acting on the sonotrode (1, 9, 15). |
