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2“QUALITY MANAGEMENT SYSTEMS IN ACCORDANCE WITH DESIGN BY CAD SYSTEM & STRESSANALYSISperforms stress analysis by the finiteelement method, and designs using the result.SUFFICIENT STOCK OF RAWMATERIALSstocks materials those meet eachstandard (eg. ASME, NK, BV, NV).HEAT TREATMENT IN A FLATCARTYPE NORMALIZING FURNACEShells are heat treated in a normalizingfurnace, and both inside and outsideaccumulator surfaces are shot blast treated.DESIGN VERIFICATION WITH BURSTINGAND FATIGUE TEST FACILITIES ETC.carries out hydrostatic bursting tests,fatigue tests, etc. with kinds of testing facilitiesfor design verification.FORGING OF SHELLS WITH SPECIALTECHNIQUEOur Accumulator shells are forged using acomputerized system.(Bursting test)(Fatigue test)

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