| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to production of high-pressure welded vessels. Shell is made by coiling the blank with jointing of edges at welding appliances, clamping the edges with the help of auxiliary plates, automatic welding, gaging over shell ID and X-ray TV quality control of the weld. Bottoms are made by drawing of forged piece circles or by combined drawing from said circle via projection, multipass rotary drawing and burnishing to produce cylindrical and spherical parts. Then, unions and valves are welded to said shell and bottoms. Remaining straps are welded to bottoms in interrupted seams. Now, shell is assembled and automatically welded to bottoms by butt circular seams and subjected to ID and X-ray TV quality control. Finally, support and transportation elements are welded to the vessel and tested for tightness.EFFECT: higher quality, structural and cyclic strength, precision of geometry and surface quality.8 cl, 10 dwg |
