scholarly journals Punching of Ultra High Strength Steel Sheets Using Local Resistance Heating

2010 ◽  
Vol 51 (588) ◽  
pp. 55-59 ◽  
Author(s):  
Ken-ichiro MORI ◽  
Seiji FUZISAKA ◽  
Mitsutaka UCHIDA ◽  
Shun KAMIZONO ◽  
Tomoyoshi MAENO
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Resistance Heating ◽  
Local Resistance ◽  
Steel Sheets ◽  
Ultra High Strength Steel

Hot Spline Forming of Ultra-High Strength Steel Gear Drum Using Resistance Heating

2014 ◽  
Vol 622-623 ◽  
pp. 201-206 ◽  
Author(s):  
Kenichiro Mori ◽  
Tomoyoshi Maeno ◽  
Shohei Nakamoto
Keyword(s):  
Deep Drawing ◽  
High Strength Steel ◽  
Side Wall ◽  
High Strength ◽  
Axial Direction ◽  
Resistance Heating ◽  
Sectional Area ◽  
Forming Process ◽  
Cross Sectional ◽  
Ultra High Strength Steel

A hot spline forming process of die-quenched gear drums using resistance heating of a side wall of a cup formed by cold deep drawing and ironing was developed. The side wall having uniform cross-sectional area is resistance-heated by passage of the current in the axial direction, the heated side wall of the drawn cup is ironed and is finally die-quenched. The gear drum was successfully formed and the hardness was between 400 and 500 HV. Not only the formability was improved but also the formed dram was hardly oxidised because of rapid resistance heating.

scholarly journals Hydrogen Embrittlement Evaluation Methods for Ultra-high Strength Steel Sheets for Automobiles

2010 ◽  
Vol 1 (2) ◽  
pp. 7-13 ◽  
Author(s):  
Shusaku Takagi ◽  
Yuki Toji ◽  
Kohei Hasegawa ◽  
Yasushi Tanaka ◽  
Norbert Roessler ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
High Strength Steel ◽  
High Strength ◽  
Evaluation Methods ◽  
Steel Sheets ◽  
Ultra High Strength Steel
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