Whether a heat treatment test plate is required for hot pressing according to UCS-85 (C)SA-516Gr.70

2019-11-28View Original

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Recently, a device was manufactured in accordance with ASME standards; the head of this device was formed by hot pressing using SA-516 Gr.70 material. Both the starting and ending temperatures for the hot pressing process were set at Ac3. According to UCS-85(c), the material used in the vessel must be represented by test specimens that have undergone the same heat treatments as those applied above the lower transformation temperature, as well as post-weld heat treatment, unless otherwise specified in points (e), (f), (g), (h), and (i). There is now some ambiguity regarding this matter – two opinions exist: 1) It is necessary to use test plates for any hot pressing process; 2) Since the process involves hot pressing, test plates are required after the heat treatment. Which opinion do you prefer, 1 or 2?

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Whether a heat treatment test plate is required for hot pressing according to UCS-85 (C)SA-516Gr.70

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