Researsh On Welding Structure And Process Of Pressure Vessel With Cad Expert Ststem

Pressure vessel welding process countries have detailed and strict rules.But in theactual production process, not only depend on the development of technology standards,but also rely on the experience of the relevant technical staff to make a reasonablejudgment. Design of welded structures and process of pressure vessels of expert systemhave theoretical and practical significance.The topic will combine related standards and the Access database, be sorted on thewelding process and form knowledge base. Knowledge Base contains arc welding,submerged arc welding and TIG data, detail data contains welding materials, weldingconsumables diameter, arc voltage, welding current and welding speed and so on. Arcwelding contains protective gas, the gas composition and the nozzle diameter. Submergedarc welding also contains welding flux. System model is mainly based on given base metaland welding consumables or flux,bases on the thickness of the base material and gives asuitable welding current, welding speed specification parameters.Welding process card is the ultimate expression of the form of expert system. Weldedjoints form with the size parameters is done by the system joint module. In the case ofproviding joint form and the base material parameters, the system will give details of therelevant parameters of welded joints such as the groove angle and the gap size, etc. Andalso put the CAD joint diagram automatically into specific location of the welding card.Sometimes reality of the situation is not the only answer. For this situation, system willgive users recommend a few possible scenarios, reflecting the concept of goodhuman-computer interaction.The study also designed a learning function modules to meet the expert system needsto constantly enrich knowledge.System using VBA language, combined with ADO data access technology,according to the interface input parameters, the use of SQL (Structured Query Language) isretrieved from the database data that meet the conditions for users to choose, user-friendly,The structure and process pressure vessel welding expert system make the design of weld structures and processes faster, more optimized, and has a good guide for pressure vesseldesign.