scholarly journals Analysis of Light Reflection from Cold-rolled Steel Sheets and Its Application to On-line Measurement of Surface Roughness

1984 ◽  
Vol 70 (9) ◽  
pp. 1095-1102 ◽  
Author(s):  
Yuichiro ASANO ◽  
Motoji SHIOZUMI ◽  
Kunio KURITA ◽  
Tadashi YABE ◽  
Susumu MORIYA
Keyword(s):  
Surface Roughness ◽  
Light Reflection ◽  
Rolled Steel ◽  
Cold Rolled Steel ◽  
Steel Sheets ◽  
Line Measurement ◽  
On Line ◽  
Cold Rolled

Effects of Process Parameters on Surface Characteristics in Cutting of Cold Rolled Steel Sheets Using a High-Power CW Nd: YAG Laser

2008 ◽  
Vol 580-582 ◽  
pp. 455-458 ◽  
Author(s):  
Dong Gyu Ahn ◽  
Min Su Kim ◽  
Young Tae Yoo ◽  
Hyung Jun Park
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
High Power ◽  
Continuous Wave ◽  
Cutting Speed ◽  
Surface Characteristics ◽  
Rolled Steel ◽  
Cold Rolled Steel ◽  
Steel Sheets ◽  
Cold Rolled

The objective of the present paper is to examine the effects of process parameters, such as laser power, cutting speed of the laser and thickness of the workpiece, on characteristics of the cut section in the cutting of cold rolled steel sheets using a high-power Nd:YAG laser with a continuous wave (CW). From the results of the experiments, the influence of the process parameters on surface roughness and average striation angle has been quantitatively investigated. In addition, critical cutting speeds with a minimum surface roughness and a maximum average striation angle has been obtained. Finally, the optimum cutting conditions for each workpiece thickness have been estimated to improve both the quality of the cut section and the cutting efficiency.

scholarly journals Development of On-Line r-value Measurement System for Cold-rolled Steel Sheets by Using Electromagnetic Acoustic Transducer

1993 ◽  
Vol 79 (7) ◽  
pp. 869-876 ◽  
Author(s):  
Kazuo FUJISAWA ◽  
Riichi MURAYAMA ◽  
Fumio YAMAMOTO ◽  
Koichi TAYA ◽  
Hidekazu FUKUOKA ◽  
...  
Keyword(s):  
Measurement System ◽  
Rolled Steel ◽  
Electromagnetic Acoustic Transducer ◽  
Cold Rolled Steel ◽  
Steel Sheets ◽  
Acoustic Transducer ◽  
On Line ◽  
Cold Rolled ◽  
R Value ◽  
Value Measurement

Spot Weldability Assessment of Similar and Dissimilar Steel Sheets for Light Weight Automobile Body

2006 ◽  
Vol 306-308 ◽  
pp. 899-904
Author(s):  
Dong Ho Bae ◽  
Won Seok Jung ◽  
J.B. Heo
Keyword(s):  
Stainless Steel ◽  
Fatigue Strength ◽  
Lap Joints ◽  
Vehicle Body ◽  
Rolled Steel ◽  
Cold Rolled Steel ◽  
Steel Sheets ◽  
Automobile Body ◽  
Cold Rolled ◽  
Spot Welded

An effective way to reduce the weight of vehicle body seems to be application of new materials, and such trend is remarkable. Among the various materials for automobile body, stainless steel sheets and cold rolled steel sheets are under the interests. However, in order to guarantee reliability of new material and to establish the long life fatigue design criteria for body structure, it is necessary to assess spot weldability and fatigue strength of spot welded lap joints fabricated under optimized spot welding condition. In this paper, spot weldability of stainless steel sheets, STS301L and STS304L, and cold rolled steel sheets, SPCC and SPCD. Fatigue strength of lap joints spot welded between similar and dissimilar materials were also assessed.

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