Design of a Test Rig for the Characterization of Thermal Fatigue and Soldering Resistance of the Surfaces of Tool Steels for High‐Pressure Die‐Casting Dies

2019 ◽  
Vol 91 (5) ◽  
pp. 1900480 ◽  
Author(s):  
Federico Simone Gobber ◽  
Andrea Giuseppe Pisa ◽  
Daniele Ugues ◽  
Mario Rosso
2020 ◽  
Vol 30 (2) ◽  
pp. 221-228
Author(s):  
Xiangyi Jiao ◽  
Chaofeng Liu ◽  
Jun Wang ◽  
Zhipeng Guo ◽  
Junyou Wang ◽  
...  

2018 ◽  
Vol 12 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Jan Clausen ◽  
Milan Kelch ◽  
Franz-Josef Wöstmann ◽  
Matthias Busse

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
I. Vicario ◽  
J. K. Idoiaga ◽  
E. Arratibel ◽  
I. Erauskin ◽  
L. M. Plaza ◽  
...  

High pressure die casting (HPDC) dies are nowadays manufactured with high quality forged steels. Cavities are made by electrical discharge machining (EDM) or by high speed milling. The average life of an aluminium HPDC die is about 125.000 injections. Refrigeration circuits have simple configurations, because they are produced by drilling the die with straight holes. They are limitations in the distances and diameters of holes. Sensors are placed where the geometry of the die permits an easy machining. In order to obtain complex figures, several rapid prototyping methods have been developed. However, there is a limitation in the life of the dies produced by this technique, from several parts to thousands. A new method to obtain semifinished high pressure die casting dies in a steel of higher mechanical properties and with the refrigeration circuits and sensors embedded into it is described in this paper. The method consists in producing a molten steel alloy with micro-nano-special ceramic particles inserted in it and casting the composite material in sand moulds of the desired geometry. The resultant solidified near-net shape die with the cooling tubes and sensors embedded into it. A use-life and a productivity about 50% and 10% higher are obtained.


Materials ◽  
2003 ◽  
Author(s):  
Weilong Chen

In recent years, high-pressure die-casting magnesium components have been gaining currency worldwide because of the excellent properties that magnesium alloys can offer to meet new product requirements. With the increasing application of magnesium parts worldwide, many research and development projects have been carried out to advance HPDC technology. However, truly optimized mold design and production of defect free castings remains a challenge for die casters. For many HPDC magnesium products, especially those specified for porosity-free and high cosmetic requirement, the challenge not only comes form a lack of a deeper understanding of how molten magnesium alloys fill the mold cavity and form defects, but also from improper preliminary part design. This study proposes a virtual prototyping system that integrates several effective soft and hardware tools for both the part and mold-design engineer to evaluate part manufacturability. Also, investigated in this study are the major causes of those defects that are the predominant cause of rejection of thin walled, leak-free magnesium parts requiring highly cosmetic finishes.


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