Abstract

Nine different chemical formulations of steel for fabricating welded tubing pipes have been elaborated for conducting laboratory tests. Tests of pilot rolled steel products are conducted. The hardenability and through-hardening of all of the tested modifications are evaluated by gradient quenching. The cooling rates at the hardening with variable drawing-back temperatures are modeled for evaluating the influence of thermal treatment on the mechanical performance of rolled steel. The optimal chemical composition and the thermal treatment parameters, which ensure the attainment of the set of mechanical properties of L80 grade, are determined.

中文翻译：

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制造L80级焊接管的钢选择

摘要

精心设计了九种用于制造焊接管的钢的化学配方，以进行实验室测试。进行了中试轧钢产品的测试。通过梯度淬火评估所有测试的变体的可淬性和穿透淬火。对具有可变回缩温度的淬火时的冷却速率进行建模，以评估热处理对轧制钢机械性能的影响。确定确保达到L80级机械性能的最佳化学成分和热处理参数。