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Abstract: The welding procedure specification and the concerned
requirement for the shell of f 3 800 mm pressurized gasifier with the
advanced －MARK# Ⅳ/4 type is introduced . The test plan is to be
determined based on the construction characters. On the basis of test
the plan is proven according to the difficulty points in the producing
process and find the suitable technology in the manufacturing. While the
scientific
reasonable
welding procedure plan, assure quality of the product and control the
deformation caused by the welding by means of a series of technology ,
narrow gap automatic tracing bead welding is adopted for the
longitudinal and girth welding of the shell. The most difficult points
are solved for welding the shell of large pressurized gasifier such as
assuring the welding quality and controlling the deformation caused by
welding, the welding result is satisfied. The success for this term
study, valuable experience is accumulated for manufacturing large
fatigue vessel and high temperature high pressure mechanical driving
equipment.
Key words: Gasifier Shell Welding procedure specification Quality
control Product application
CLC No: TG441
国家科委计划编号(973190102).
Received 20020114, received in revised form 20020422
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