High grade and efficient solder technology, large wall container is narrow the application that clearance buries arc solder

20 centuries since 90 time, as refine factory dimensions large change, will need a batch large or exceed large facility. Large facility means norms big, implement wall thick, weight is great and solder workload is big. Because suffer,carry the restriction that waits for a condition to certain and large facility, already cannot make completely inside the factory finish, can undertake group solder in use spot only. As the change of the condition that make, large container wall increases thickly ceaselessly, because method of welding rod arc welding solders rate is slow wait for a reason unwell already at the spot large the group solder of large wall container. Method of traditional the solder that bury arc also puts in following problems: (1) the electric mouth size that the tradition buries arc solder equipment is larger, for implementation deep groove solder, need increases groove breadth. Increase solder material and the sources of energy not only use up, and still increase remains stress and be out of shape. (2) the tradition buries arc solder to be controlled accurately hard, produce the limitation such as incomplete fusion and slag inclusion easily. This shows, petrifaction facility is large change pair of equipment to make solder the technology offerred a lot of new tasks, also can say to offer new challenge and opportunity. Below, I with large wall container narrow clearance buries arc solder to be exemple, shallow talk efficient solder the value that the technology uses in promotion of oil petrifaction trade. Current, narrow clearance buries arc solder is to reduce welder to make an amount, reduce solder of cost efficient solder technology, this technology is producing bigger and bigger effect in domain of solder of group of large wall container. Narrow the characteristic that clearance buries arc solder craft: Use I form normally or U form is narrow clearance groove, groove clearance is in 18~30mm, with common photograph of the solder that bury arc is compared, have welding line area area of section of narrow, welding line reduces metal of apply of frit of 1/3, welding line to measure little, can save many fill metal and weld time, rise solder efficiency, and reduce significantly solder the advantage such as cost. Because solder,bulk narrows reduced greatly solder leftover stress and by solder workpiece be out of shape, reduced at the same time solder crackle and the possibility that heat affects an area to eliminate stress to handle crackle. To make sure a ministry and sidewall frit are appeared, use every layer double method solder method, go up to groove from the root ministry of groove the surface, multilayer double talk solder each other overlap, and hind one solder solder the effect that prop of before quantity of heat is right one solder has temper, because this made sure the quality that each solder is even, the metallographic organization of welding line and mechanical function all can achieve a requirement. Additional, narrow clearance solders the process is full automatic, prevented the not stable ingredient in adjusting artificially thereby. The Kazakstan Si Tan that my company continues plunges into that Nuo Er the fluid of crucial equipment amine of device of to decoke of plant of processing of the 3rd oil gas absorbs a tower, nominal diameter is spent for overall height of body of 3800mm, tower for wall of 38822mm, main body thick for 124mm, heft 521t. Because suffer traffic condition place to be restricted, this equipment can be divided only piece in spot group solder. The spot is used narrow clearance buries arc solder method, solder percent of pass is 99.

9% . Amine fluid absorbs the success of spot group solder of the tower, fill the blank that spot of pressure vessel of oversize of Chinese oil project makes. CNC Milling