Optimized Tension for AZ31B Thin Sheets Rolled with On-Line Heating Rolling

As one of the most advanced technology, twin-roll strip casting technology has a huge advantage compared to conventional casting technology in iron and steel industry. In recent years, therefore, metallurgical workers are favour of the twin-roll strip casting technology and invest a great deal of reseach funding. It has achieved considerable progress. In abroad, there were several advanced iron and steel enterprises which had realized the commercialization of small-scale production. But there is still a long way to go for the mass of industrial production. Because of the very short service life of side dam, side sealing technology is one of the bottlenecks. Based on this, the paper analyzes the reason caused the very short service life of traditional side dam and improves the service life through improving heating mode. That is digging appropriate size of slot on the back of the side dam in the contact with casting roller to install resistance wire for on-line heating. The result indicate that the improved heating mode can make the temperature distribution and stress distribution of the side dam more uniform, decrease temperature gradient and thermal stress and improve stress concentration. It can improve the service life of the side dam in a certain extent.

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Effect of pass reduction on distribution of shear bands and mechanical properties of AZ31B alloy sheets prepared by on-line heating rolling

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2020.116611 ◽

2020 ◽

Vol 280 ◽

pp. 116611 ◽

Cited By ~ 3

Author(s):

Biquan Xiao ◽

Jiangfeng Song ◽

Aitao Tang ◽

Bin Jiang ◽

Wenyan Sun ◽

...

Keyword(s):

Mechanical Properties ◽

Shear Bands ◽

Line Heating ◽

On Line ◽

Az31b Alloy

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Practice for On-line/At-line Heating Value Determination of Gaseous Fuels by Gas Chromatography

10.1520/d7164-10r15 ◽

2015 ◽

Author(s):

Keyword(s):

Gas Chromatography ◽

Line Heating ◽

Heating Value ◽

Gaseous Fuels ◽

On Line ◽

Value Determination

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A Method for Simulation of Microstructure Evolution in 980MPa-ULCB Steels during On-Line Heating Treatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.214.472 ◽

2011 ◽

Vol 214 ◽

pp. 472-476

Author(s):

Jian Xin Zhang ◽

Ai Hua Gao

Keyword(s):

Microstructure Evolution ◽

Treatment Process ◽

Steel Plate ◽

Volume Fraction ◽

High Strength ◽

Accelerated Cooling ◽

Line Heating ◽

Treatment Parameter ◽

Heating Treatment ◽

On Line

Influence of the off line heating treatment parameter on the microstructure of a high strength steel plate was studied system previously. However, the information about the effect of on-line heating treatment process on ultra-high steel plate, especially on the plate with a tensile strength 980MPa or above, is limited due to the lack of effective method to simulation for the on-line heating treatment process. A method, which is preformed with a thermo-mechanical simulator, simulation the parameter of on-line heating treatment on the microstructure evolution a high strength ULCB steel plate after the accelerated cooling. By means of observation the original microstructure and microstructure morphologies varied with the parameter of the on-line heating treatment process, the present results demonstrate the microstructure characterizations before and after heating treatment process, while also the distribution of M(C, N) particles on lath boundaries or lath interior and the volume fraction and the average size of M/A island.

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Development of 780MPa Grade Steel Plate by Microstructural Control Containing M-A through the On-Line Heating Process

Materials Science Forum ◽

10.4028/www.scientific.net/msf.638-642.3555 ◽

2010 ◽

Vol 638-642 ◽

pp. 3555-3560 ◽

Cited By ~ 2

Author(s):

Keiji Ueda ◽

Shinichi Suzuki ◽

Shinji Mitao ◽

Nobuo Shikanai ◽

Takayuki Ito

Keyword(s):

Heating Temperature ◽

Bainitic Ferrite ◽

High Strength ◽

Steel Plates ◽

Accelerated Cooling ◽

Heating Process ◽

Line Heating ◽

On Line ◽

Grade Steel ◽

Microstructural Control

High strength steel plates with 780MPa in tensile strength, suitable for building construction use, have been developed. The steel plates provide excellent combination of high strength, toughness, deformability and weldability. The key technology to obtain the excellent combination in mechanical properties of the steel is the microstructural control of M-A (martensite-austenite constituent) and the bainitic ferrite dual-phase structure, through the on-line heat treatment immediately after the accelerated cooling in Thermo-mechanical control process (TMCP). The developed steel plates have microstructure of fine M-A dispersed in the bainitic ferrite matrix. Basic metallurgical research revealed that the transformation behavior and microstructural morphologies were varied with the cooling stop temperature before the on-line heating, and the on-line heating temperature itself. Trial production of the developed 780MPa grade steel plates was also carried out with the plate mill. The obtained plates showed the satisfactory combination of high strength, low yield ratio, toughness.

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