Resistance Heating Characteristics of High-Strength Steel Sheet Blank for Hot Press Forming

2007 ◽  
pp. 749-754 ◽  
Author(s):  
Seijiro Maki ◽  
Yuuki Tanaka ◽  
Kenichiro Mori
Keyword(s):  
High Strength Steel ◽  
Steel Sheet ◽  
High Strength ◽  
Resistance Heating ◽  
Hot Press ◽  
Sheet Blank ◽  
Press Forming ◽  
Hot Press Forming

Resistance Heating Characteristics of High-Strength Steel Sheet Blank for Hot Press Forming

2007 ◽  
Vol 340-341 ◽  
pp. 749-754 ◽  
Author(s):  
Seijiro Maki ◽  
Yuuki Tanaka ◽  
Kenichiro Mori
Keyword(s):  
High Strength Steel ◽  
Steel Sheet ◽  
High Strength ◽  
Single Pair ◽  
Resistance Heating ◽  
Hot Press ◽  
Press Forming ◽  
Hot Press Forming ◽  
Blank Shape ◽  
Material Utilization

Resistance heating performance in some shaped blanks of high-strength steel sheet is examined by experiment and FE simulation, and the feasibility and effectiveness of the application of resistance heating to the hot press forming of high-strength steel sheet are discussed. The followings are made clear through this study. (1) A uniformly distributed current density is essential to uniform blank heating. (2) For a certain shaped blank, no matter how the electrodes are disposed, uniform blank heating is difficult. (3) A blank shape suitable for uniform heating by a single pair of parallel electrodes is restricted to a rectangle.(4) In case a uniformly heated blank is required, two-piece simultaneous forming with point-symmetric die layout is recommended from the viewpoint of material utilization.

Ultra-high strength and excellent ductility in multi-layer steel sheet of austenitic hadfield and martensitic hot-press-forming steels

2019 ◽  
Vol 759 ◽  
pp. 320-328 ◽  
Author(s):  
Jaeyeong Park ◽  
Min Cheol Jo ◽  
Taejin Song ◽  
Hyoung Seop Kim ◽  
Seok Su Sohn ◽  
...  
Keyword(s):  
Steel Sheet ◽  
High Strength ◽  
Hot Press ◽  
Press Forming ◽  
Hot Press Forming ◽  
Layer Steel

The Effect of Cooling Rate on Mechanical Properties of 22MnB5 Steel Sheet during Hot Press Forming

2011 ◽  
Vol 264-265 ◽  
pp. 241-247 ◽  
Author(s):  
Ki Young Kwon ◽  
Nak Hyun Kim ◽  
Chung Gil Kang
Keyword(s):  
Mechanical Properties ◽  
Steel Sheet ◽  
Cooling Water ◽  
High Strength Steels ◽  
High Strength ◽  
Hydraulic Press ◽  
Boron Steel ◽  
Hot Press ◽  
Press Forming ◽  
Hot Press Forming

There has been a growing usage of high strength steels (HSS), particularly in automobile applications mainly as structural parts in view of their light weight and high strength properties. These materials are also being considered for dynamic applications. However, the multi-phase microstructure, which is at the base of the strengthening mechanisms in most of these steels, leads to unacceptably high stresses during forming and significant springback phenomena, thus making traditional sheet metal forming technologies unsuitable. To avoid the disadvantages, a new process method was introduced – Hot Press Forming. Hot press forming (HPF) process is a forming method which can provide various advantages such as excellent mechanical properties and formability, good weldability and little springback. Here, the experiment parameters which include locations of the cooling holes and the flow rate of the cooling water play an important role in the HPF process. In this paper, the Al-Si coated boron steel sheet was researched by heating it up to 930oC for 5 min and formed by a hydraulic press. In this study, microstructural evolutions and the associated mechanical properties were investigated in terms of the flow rates of the cooling water.

Influence of Hot Press Forming Techniques on Properties of Vehicle High Strength Steels

2011 ◽  
Vol 18 (5) ◽  
pp. 59-63 ◽  
Author(s):  
Ying Chang ◽  
Zhao-huan Meng ◽  
Liang Ying ◽  
Xiao-dong Li ◽  
Ning Ma ◽  
...  
Keyword(s):  
High Strength Steels ◽  
High Strength ◽  
Hot Press ◽  
Press Forming ◽  
Hot Press Forming

Hot Forming of Boron Alloyed Manganese Steels

2017 ◽  
Vol 885 ◽  
pp. 25-30 ◽  
Author(s):  
Miklós Tisza
Keyword(s):  
Automotive Industry ◽  
High Strength Steels ◽  
High Strength ◽  
Hot Press ◽  
Press Forming ◽  
Harmful Emissions ◽  
Technological Developments ◽  
Hot Press Forming ◽  
Manganese Steels ◽  
Significant Mass

The automotive industry always had a determining role in the whole economy. In sheet metal forming both the material and the technological developments are strongly affected by the development tendencies in car manufacturing. One of the main trends in today’s car manufacturing is to apply light weight construction principles to meet the increased customers’ demand and legal requirements. In this respect, application of high strength steels is regarded as one of the most promising possibilities. Applying high strength steels has a very positive response for many requirements: increasing strength results in the application of thinner sheets leading to significant mass reduction and simultaneously to lower consumption and less harmful emissions however it also leads to formability problems. Hot press forming is one of the most successful solutions to overcome these difficulties. In this paper, a general overview of hot press forming processes will be summarised.

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