Development of Nitrogen-Oxygen Mixed Blowing Process in Converter for Increasing Nitrogen and Its Application in High-Strength Steel Bar Production

2018 ◽  
Author(s):  
Y. Wang ◽  
M. Li ◽  
H. Hao
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Steel Bar

Adjust Compositions to Produce High Strength Steel Bars for the Building Industry

2014 ◽  
Vol 584-586 ◽  
pp. 1794-1797
Author(s):  
Tie Jun Zhang
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Molten Iron ◽  
Building Industry ◽  
Vanadium Nitride ◽  
Calcium Treatment ◽  
Steel Bar ◽  
Steel Bars

In order to produce required high strength steel bars for the building industry, it is necessary to provide steel with correct compositions. Effective, controlled micro-alloying is very important in the production of high strength steel bar of consistent microstructure and hence mechanical properties and weldability. Through adopting a series of measures such as molten iron pretreatment, converter final control, argon, calcium treatment, vanadium nitride and so on, a proper way to make high strength steel bar was given. The results show that the strength of the steel bars for the building industry can be increased by micro alloying with vanadium nitride. Favorable metallurgical achievements and economical benefits were gained.

Bond Strength and Damage of Long Rebar Anchored in HPC under Static and Fatigue Loading

2006 ◽  
Vol 324-325 ◽  
pp. 867-870 ◽  
Author(s):  
Jian Zhuang Xiao ◽  
Chuan Zeng Zhang ◽  
Horst Falkner
Keyword(s):  
Static Loading ◽  
High Strength Steel ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Fatigue Loading ◽  
Element Analysis ◽  
Bond Behaviour ◽  
Steel Bar ◽  
Reinforcement Bar

This paper presents an experimental study on the anchorage behaviour of long high-strength steel rebars embedded in high-performance concrete (HPC) under both static loading and fatigue loading. The HPC was designed as C60 with its cube compressive strength larger than 60 MPa, and the high-strength steel bar was adopted as HRB500 with its characteristic yield strength equals 500 MPa. Under 3×106 fatigue loading cycles and then followed by a monotonous static loading, the strain and the stress state of the reinforcement bar, and the bond stress between the concrete and the 700 mm-long bar were investigated. Based on the test results and the ANSYS finite element analysis, the bond behaviour between HPC and long high-strength steel bars is discussed.

Failure Analysis of High Strength Steel Bar Used in a Wind Turbine Foundation

2015 ◽  
Vol 15 (2) ◽  
pp. 295-299 ◽  
Author(s):  
Xinfeng Li ◽  
Jin Zhang ◽  
Peng Zhang ◽  
Pei Li ◽  
Xiaolong Song
Keyword(s):  
Failure Analysis ◽  
Wind Turbine ◽  
High Strength Steel ◽  
High Strength ◽  
Steel Bar
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