钒：改造未来

The Use of Vanadium in Reinforcing Bar Steels

Abstract:

In Europe, high strength reinforcing bars for concrete structures are largely joined by weld­ing and in order to achieve good joints without pre-heat and cracking, the steels have a low carbon content of about 0.25%. At this carbon level the strength is reduced and has to be re­stored by the addition of micro alloys, or by in-line heat treatment. The addition of vanadium to the steels is the most commonly used method of restoring the strength, and the most univer­sally acceptable, taking account of the varying conditions of manufacture which exist in mills making these bars. This report describes the production of these steels, and compares the pro­duction and properties, with those of bars produced by other alloys or methods.