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前言 中碳镍铬钼钒厚壁管胚,由于其零件尺寸大、壁厚,用现行冶金、锻压及热处理工艺生产这种高强度、高韧性的大型厚壁管胚零件,常常在某些部位上出现冲击韧性较低或不合格。这种现象是很多生产厂普遍存在的实际问题。对此,引起了人们的极大重视,迫切需要解决。 本文系根据我厂多年来的生产实践和管胚截剖的数据经统计分析和试验总结而成的。它对于生产同类产品工人和技术人员颇有参考价值。
Preface The medium carbon, nickel, chromium, molybdenum and vanadium thick walled tube embryo, due to its large size and wall thickness, is produced by the current metallurgy, forging and heat treatment process. The large thick walled tube and embryo parts with high strength and toughness are often used in some parts Impact toughness appears on the lower or unqualified. This phenomenon is a common problem in many manufacturing plants. In this regard, it has aroused great attention of people and an urgent need to be resolved. This article is based on our factory production practice over the years and the cross-sectional data of the tube embryo by statistical analysis and test summed up. It is quite useful for producing workers and technicians of similar products.