نتایج جستجو برای: cold forming machine

تعداد نتایج: 477734  

2010
A. E. Tekkaya

The production of high strength steel components with desired properties by hot stamping (also called press hardening) requires a profound knowledge and control of the forming procedures. In this way, the final part properties become predictable and adjustable on the basis of the different process parameters and their interaction. In addition to parameters of conventional cold forming, thermal ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

Journal: :Advances in Materials Science and Engineering 2018

Journal: :Journal of the Japan Society for Technology of Plasticity 2016

Journal: :Metals 2023

The automotive industry has undergone significant advancements and changes over time, resulting in the use of more complex parts modern vehicles. As a consequence, used manufacturing process are subject to higher stress levels, which reduce their service life. To mitigate this issue, surface treatments can be applied improve mechanical properties tools. In study, we examined impact on reducing ...

2015
Jong-Min Kim So Young Hwang Dong-Soo Kim

This research describes the performance data of the aluminum automobile wheel manufactured by wheel flow forming machine. The performance is examined after designing and operating the CNC controller which is customized for the wheel flow-forming machine. In general, the existing wheel flowforming machine simultaneously controls the 3 rollers and axis, which results in the degradation of the qua...

2016
Anders E. W. Jarfors Sylvie J. Castagne Atsushi Danno Xinping Zhang

The current paper aims to review tooling life span, failure modes and models in cold microforming processes. As there is nearly no information available on tool-life for microforming the starting point was conventional cold forming. In cold forming common failures are (1) over stressing of the tool; (2) abrasive wear; (3) galling or adhesive wear, and (4) fatigue failure. The large variation in...

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