Views: 0 Author: Kath Publish Time: 2024-06-07 Origin: Site
Stainless Steel Reducer
1.Type: Concentric / Eccentric reducer
2. Main material: stainless steel, alloy steel, carbon steel
3. Ministry of Power standard GD0506-0507 for flanges and tube plates of pressure vessels: JB/T4700~4707-2000 Implementation of the national standard (GB/T9112-2000).
Ministry of Machinery standard: （JB/T81-1959，JB/T74-1994）
Ministry of Lithology standard: (SH346-1996)
Ministry of Chemical Industry standard: (HG/T5010-1958, HG/T20592-2009)
International & National standard: ASME B16.9, GB/T12459-2005, GB/T13401-2005, DIN, GOST, JIS B2313
4. Manufacturing process: Reducing pressing, expanding pressing or reducing plus expanding pressing.
5. Application
(1) Metallurgy & electric power industry
(2) Mining & coal industry
6. Special situation: Stainless steel reducer cracking
The failed parts were characterized for crack and fracture morphology using metallographic microscopy and scanning electron microscopy. Electron energy spectrum analysis was conducted to determine the chemical composition of the base metal, weld, heat affected zone, and corrosion products.
The results indicate that pipeline leakage is attributed to sensitization treatment during welding, leading to rapid intercrystalline stress corrosion cracking under the combined influence of chloride and sulfide solutions.
