Effect of direct quenching and partitioning treatment on mechanical properties of a hot rolled strip steel

2016 ◽  
Vol 31 (1) ◽  
pp. 178-185 ◽  
Author(s):  
Jian Kang ◽  
Chao Wang ◽  
Yunjie Li ◽  
Guo Yuan ◽  
Guodong Wang
Keyword(s):  
Mechanical Properties ◽  
Rolled Strip ◽  
Strip Steel ◽  
Quenching And Partitioning ◽  
Hot Rolled Strip ◽  
Direct Quenching ◽  
Hot Rolled

scholarly journals Production of Directly Quenched High-Strength Hot-Rolled Strip Steels - Influence of Rolling and Cooling Conditions on Mechanical Properties and Flatness

2016 ◽  
Vol 854 ◽  
pp. 29-34
Author(s):  
Joachim Schöttler ◽  
Thorsten Maiwald ◽  
Gunnar Linke
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Cost Effective ◽  
Rolled Strip ◽  
Coiling Temperature ◽  
Hot Rolled Strip ◽  
Direct Quenching ◽  
Cooling Conditions ◽  
Plant Trials ◽  
Hot Rolled

The production of hot-rolled sheets of high-strength and wear-resistant special structural steels by direct quenching from the rolling heat is a cost effective and energy-saving alternative to traditional production via downstream quenching the previously cut-to-length plates. Reaching the required strength and toughness parameters in combination with best flatness of the sheets requires strict compliance with the pre-set rolling and cooling conditions over the entire strip width. Using two high-strength low-alloyed steels, plant trials have been carried out to study the effect of the cooling conditions and the coiling temperature on mechanical properties, impact toughness and flatness of cut-to-length sheets made of hot-rolled strip. The results showed that by applying optimized cooling pattern and low coiling temperatures, high-strength steel sheets with outstanding mechanical properties and good flatness can be produced.

scholarly journals An improved Vision Transformer-based method for classifying surface defects in hot-rolled strip steel

2021 ◽  
Vol 2082 (1) ◽  
pp. 012016
Author(s):  
Xinglong Feng ◽  
Xianwen Gao ◽  
Ling Luo
Keyword(s):  
Surface Defect ◽  
Surface Defects ◽  
Steel Strip ◽  
Learning Ability ◽  
Rolled Strip ◽  
Strip Surface ◽  
Strip Steel ◽  
Hot Rolled Strip ◽  
Hot Rolled ◽  
Improved Algorithm

Abstract A new Vision Transformer(ViT) model is proposed for the classification of surface defects in hot rolled strip, optimizing the poor learning ability of the original Vision Transformer model on smaller datasets. Firstly, each module of ViT and its characteristics are analyzed; Secondly, inspired by the deep learning model VGGNet, the multilayer fully connected layer in VGGNet is introduced into the ViT model to increase its learning capability; Finally, by performing on the X-SDD hot-rolled steel strip surface defect dataset. The effect of the improved algorithm is verified by comparison experiments on the X-SDD hot-rolled strip steel surface defect dataset. The test results show that the improved algorithm achieves better results than the original model in terms of accuracy, recall, F1 score, etc. Among them, the accuracy of the improved algorithm on the test set is 5.64% higher than ViT-Base and 2.64% higher than ViT-Huge; the accuracy is 4.68% and 1.36% higher than both of them, respectively.

VAIQ Strip - An On-Line System for Controlling the Mechanical Properties of Hot Rolled Strip

1998 ◽  
Vol 31 (23) ◽  
pp. 315-320 ◽  
Author(s):  
Josef Andorfer ◽  
Dietmar Auzinger ◽  
Manfred Hirsch ◽  
Gerhard Hubmer ◽  
Rudolf Pichler
Keyword(s):  
Mechanical Properties ◽  
Rolled Strip ◽  
Line System ◽  
Hot Rolled Strip ◽  
On Line ◽  
Hot Rolled

Strain-induced precipitation behaviour in hot rolled strip steel

2001 ◽  
Vol 299 (1-2) ◽  
pp. 27-37 ◽  
Author(s):  
E.V Pereloma ◽  
B.R Crawford ◽  
P.D Hodgson
Keyword(s):  
Rolled Strip ◽  
Strip Steel ◽  
Hot Rolled Strip ◽  
Precipitation Behaviour ◽  
Hot Rolled
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