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介绍了-50℃级低温压力容器无缝钢管的研制过程。用新研制的B651钢,采用平炉冶炼+炉外精炼或电弧炉冶炼+钢包吹Ar和控温轧管工艺生产的-50℃级低温压力容器无缝钢管,产品综合性能全部超过科研试制协议规定值,低温冲击值是JISG3460—84标准值的5倍多。
The development process of -50 ℃ low temperature pressure vessel seamless steel pipe was introduced. With the newly developed B651 steel, the use of flat furnace smelting + furnace refining or electric arc furnace smelting + ladle blowing Ar and temperature-controlled pipe rolling process -50 ℃ low temperature pressure vessel seamless steel pipe, the overall performance of all products exceed the scientific research trial agreement Value, low temperature impact value is more than 5 times the standard value of JISG3460-84.