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首页> 外文期刊>JFE technical report >High Performance Steel Plates for Construction and Industrial Machinery Use -New Steel Plates for Construction and Industrial Machinery Use with High Strength and Superior Toughness Combined with Good Weldability and Formability-
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High Performance Steel Plates for Construction and Industrial Machinery Use -New Steel Plates for Construction and Industrial Machinery Use with High Strength and Superior Toughness Combined with Good Weldability and Formability-

机译：用于工程和工业机械的高性能钢板-具有高强度和优异的韧性以及良好的可焊接性和成形性的用于工程和工业机械的新型钢板-

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摘要

The requirements placed on steel-plates for construction and industrial machinery use have diversified in recent years, as exemplified by low temperature toughness to enable use in cold districts and improved weld-ability by lowering the preheating temperature for welding. To meet these requirements, JFE Steel has developed new abrasion resistant steel plates, "JFE-EH360LE/ EH500LE," and a new high strength steel plate, "JFE-HITEN780LE," with good weldability and low temperature toughness guaranteed at ~40 deg C. In the developed steel plates, high hardness or high strength was achieved by selecting the optimum C content and hardenability (D), while reducing the carbon equivalent (Ceq) in consideration of weldability. Low temperature toughness at -40 deg C was improved in the developed steel plates by applying microalloying and thermo-mechanical control process (TMCP) I controlled heat treatment process technologies to refine prior austenite grains.
机译：近年来，对用于建筑和工业机械的钢板的要求已经多种多样，例如低温韧性可在寒冷地区使用，并通过降低焊接的预热温度来提高焊接性能。为了满足这些要求，JFE Steel开发了新的耐磨钢板“ JFE-EH360LE / EH500LE”和新的高强度钢板“ JFE-HITEN780LE”，它们具有良好的可焊性和低温韧性，可在约40℃的温度下得到保证。在已开发的钢板中，通过选择最佳的C含量和淬透性（D）来实现高硬度或高强度，同时考虑到可焊接性降低碳当量（Ceq）。通过应用微合金化和热机械控制工艺（TMCP）I控制的热处理工艺技术来改进以前的奥氏体晶粒，可以改善已开发钢板在-40℃时的低温韧性。

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