【摘要】 介绍了国家标准GB/T 35740-2017―工业阀门用镍和镍基合金铸件技术条件的制订目的,分析了国内外相关标准的差异,论述了镍和镍基合金铸造技术和特性。更多还原

【Abstract】 This article introduces the purpose of formulation which newly formulated national standard GB/T 35740-2017《technical conditions of nickel and nickel-based alloy castings for industrial valves》; analyzes the differences between relevant standards at home and abroad,and discusses the casting techniques and characteristics of nickel and nickel-based alloy castings.更多还原