Verification of dimensional stability on ITER blanket shield block after stress relieving
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- 作者：Sa-Woong Kim ; swkim12@nfri.re.kr" class="auth_mail" title="E-mail the corresponding author ; Hun-Chea Jung ; Min-Su Ha ; Hee-Jin Shim
- 关键词：Shield block ; Full Scale Prototype ; Welding deformation ; PWHT ; Hot helium leak test
- 刊名：Fusion Engineering and Design
- 出版年：2016
- 出版时间：1 November 2016
- 年：2016
- 卷：109-111
- 期：part_PA
- 页码：878-883
- 全文大小：2473 K
文摘
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The SB#08 FSP were manufactured by using conventional manufacturing processes such as cutting, milling, drilling and welding.
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Especially, a strong back system was adopted in order to prevent welding deformation during cover plate welding process.
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Post-Welding Heat Treatment (PWHT) for stress relieving and Hot He Leak Test (HHLT) were waived from the lake of huge test facility in the pre-qualification program.
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The PWHT combined with the HHLT, however, were implemented to remove the residual stress and to confirm the soundness of welded parts as an internal R&D activities after the pre-qualification program.
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Three dimensional inspection also carried out after the PWHT to check the dimensional stabilization.