论文部分内容阅读
16Mn钢系低合金钢中的一个基础钢种,其产量约占我国合余钢产量的1/4。其中16MnR压力容器用钢板,使用量最大。从目前我国16Mn钢板质量水平来看,各生产单位尚未解决如何综合提高σ_δ、a_k(+20℃)、a_k(-40℃)等性能指标的问题,而用户对钢板质量的要求却愈来愈高,例如对16MnR中板,希望能以夏比冲击代替梅氏冲击,特别要求按夏比A_(KV)(-40℃)交货;要求有稳定的综合机械性能;为提高焊接性能,要求低含碳量;要求钢板经超声波探伤后再出厂。为此,自1983年开
16Mn steel low alloy steel in a basic steel, the output of China’s total output accounts for about 1/4 of the steel. One 16MnR pressure vessel with the largest use of steel. From the current quality level of 16Mn steel in China, the production units have not yet solved the problem of how to comprehensively improve the performance indexes such as σ_δ, a_k (+ 20 ℃), a_k (-40 ℃), and so on, High, for example on 16MnR plates, hoping to replace Charlie’s impact with Charpy impact, with special requirements for Charpy A_ (KV) (-40 ° C) delivery; stable composite mechanical properties are required; to improve weldability requirements Low carbon content; required by the steel plate after ultrasonic testing before leaving the factory. To this end, since 1983