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发表于 2017-4-26 20:13:34
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具体要求需要参见SA-20:
S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons
S3.1 Prior to testing, the test coupons representing the plate for acceptance purposes for mechanical properties shall be thermally treated to simulate a post-weld heat treatment below the critical temperature (Ac3), using the heat treatment parameters (such as temperature range, time, and cooling rates) specified in the purchase order. For tests using specimens taken from such heat treated test coupons, the test results shall meet the requirements of the applicable product specification.
S4. Additional Tension Test
S4.1 Other Than Quenched-and-Tempered Plates - In addition to the required single tension test, a second tension test shall be made using a test specimen taken from a test coupon taken from a corner of the plate-as-rolled on the end opposite the single test specimen and in a direction parallel to the single test specimen. The results obtained using this second test specimen shall meet the requirements of the applicable product specification.
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