scholarly journals Study on new hot stamping tool with low cost and high cooling efficiency

2021 ◽  
Vol 1157 (1) ◽  
pp. 012097
Author(s):  
S Peng ◽  
J Zhou ◽  
S Qian ◽  
M Zhang ◽  
J Liu ◽  
...  
Keyword(s):  
Low Cost ◽  
Hot Stamping ◽  
Cooling Efficiency

Surface Differential Scanning Calorimeter for Evaluation of Evaporative Cooling Efficiency

2012 ◽  
Vol 7 (2_suppl) ◽  
pp. 155892501200702
Author(s):  
Ruslan Burtovyy ◽  
Binyamin Rubin ◽  
Mahmut O. Kesimci ◽  
Igor Luzinov ◽  
Jeffery Owens ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Differential Scanning Calorimeter ◽  
Low Cost ◽  
Evaporative Cooling ◽  
Cooling Power ◽  
Cooling Efficiency ◽  
Temperature Decrease ◽  
Heating Systems ◽  
Quantitative Analyses ◽  
Transfer Properties

We developed a Surface Differential Scanning Calorimeter for the quantitative analyses of thermodynamic and heat transfer properties of thin fibrous and porous samples. It has been demonstrated that the calorimeter is capable of measuring cooling power as well as temperature decrease in a reliable and reproducible way. Considering its low cost the equipment can be a valuable option for studying cooling/heating systems in laboratory settings.

LED Street Lamp Module Configuration Design

2013 ◽  
Vol 694-697 ◽  
pp. 3012-3015
Author(s):  
Yong Ping Zhang ◽  
Long Liu ◽  
Yun Cui Zhang ◽  
Guang Ye Wang ◽  
De Sheng Li ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Heat Dissipation ◽  
Low Cost ◽  
Configuration Design ◽  
Cooling Efficiency ◽  
Optical Lens ◽  
Average Temperature ◽  
Dissipation Structure ◽  
Street Lamp ◽  
Modular Method

The configuration of LED street lamp is important for its high security and low cost requirements. The modular method is introduced to design LED street lamp with independent light source and heat dissipation structure. In the single module heat pipe technology radiator is used to improve the LED street lamp of the cooling efficiency. For the 60W LED module, the optical lens are designed with the angles of 60 ° and 30 ° respectively and the average temperature is 329 K on each observation sides of the module.

scholarly journals Development of low-friction and wear-resistant surfaces for low-cost Al hot stamping tools

2015 ◽  
Vol 21 ◽  
pp. 05009 ◽  
Author(s):  
Y. Dong ◽  
D. Formosa ◽  
J. Fernandez ◽  
X. Li ◽  
G. Fuentes ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Low Cost ◽  
Hot Stamping ◽  
Low Friction ◽  
Wear Resistant

Research on New Hot Stamping Tool with Low-Cost and High-Efficiency Cooling

2021 ◽  
pp. 2759-2766
Author(s):  
Shixin Peng ◽  
Jie Zhou ◽  
Mengmeng Zhang ◽  
Kemin Zhang ◽  
Jie Liu
Keyword(s):  
High Efficiency ◽  
Low Cost ◽  
Hot Stamping

Simulation of Die Gap Variation in Temperature Field Distribution of High Strength Steel Hot Stamping Process

2013 ◽  
Vol 652-654 ◽  
pp. 2048-2052 ◽  
Author(s):  
Shu Lai Chen ◽  
Yu Jun Cai ◽  
Guo He Li ◽  
Zhi Gang Liu
Keyword(s):  
Temperature Field ◽  
Field Distribution ◽  
High Strength Steel ◽  
Thickness Distribution ◽  
Hot Stamping ◽  
High Strength ◽  
Cooling Efficiency ◽  
Temperature Field Distribution ◽  
Simulation Accuracy ◽  
Stamping Process

In the hot stamping process, die gap may affect cooling efficiency of the die and the condition of stress-strain. When other conditions are same, die gap were taken for 0.9t, t, 1.1 t, 1.2 t, t is sheetthickness. Temperature field and thickness distribution of the parts are simulated by ANSYS/LS-DYNA module, it is discovered that the distribution of temperature and thickness is uniform when the die gap is 1t and 1.1t. Finally, an experimental is designed to verify the simulation accuracy.

scholarly journals Deformation Behavior and Microstructural Evolution during Hot Stamping of TA15 Sheets: Experimentation and Modelling

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 223 ◽  
Author(s):  
Zhiqiang Li ◽  
Haitao Qu ◽  
Fulong Chen ◽  
Yaoqi Wang ◽  
Zinong Tan ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Low Cost ◽  
Hot Stamping ◽  
Material Model ◽  
Tensile Tests ◽  
Structural Components ◽  
Processing Window ◽  
Ta15 Titanium Alloy ◽  
Forming Temperature ◽  
Structural Parts

Near- α titanium alloys have extensive applications in high temperature structural components of aircrafts. To manufacture complex-shaped titanium alloy panel parts with desired microstructure and good properties, an innovative low-cost hot stamping process for titanium alloy was studied in this paper. Firstly, a series of hot tensile tests and Scanning Electron Microscope (SEM) observations were performed to investigate hot deformation characteristics and identify typical microstructural evolutions. The optimal forming temperature range is determined to be from 750 °C to 900 °C for hot stamping of TA15. In addition, a unified mechanisms-based material model for TA15 titanium alloy based on the softening mechanisms of recrystallization and damage was established, which enables to precisely predict stress-strain behaviors and potentially to be implemented into Finite Element (FE) simulations for designing the reasonable processing window of structural parts for the aerospace industry.

Development of a low-cost wax injection mold with high cooling efficiency

2017 ◽  
Vol 93 (5-8) ◽  
pp. 2081-2088 ◽  
Author(s):  
Chil-Chyuan Kuo ◽  
Wei-Hua Chen ◽  
Xue-Zhe Liu ◽  
Yi-Lin Liao ◽  
Wei-Jie Chen ◽  
...  
Keyword(s):  
Low Cost ◽  
Injection Mold ◽  
Cooling Efficiency ◽  
Wax Injection

The Process Optimization to Prevent the Local Wrinkles of Hot Stamping Parts and the Design of Tools

2014 ◽  
Vol 1063 ◽  
pp. 301-304
Author(s):  
Shao Li Sun ◽  
Zi Jian Wang ◽  
Xiao Chun Yao ◽  
Yi Lin Wang ◽  
Yi Sheng Zhang
Keyword(s):  
Sheet Metal ◽  
Process Optimization ◽  
Hot Stamping ◽  
Tool Design ◽  
Hot Forming ◽  
Cooling Efficiency ◽  
Sheet Metals ◽  
Blank Holder ◽  
Set Up

During the process of hot stamping, due to the deformations of sheet metals are mainly bending and shallow drawing, as well as to prevent the temperature strikingly drop caused by the local contact of sheet metal and die, the hot stamping tool usually does not set up blank-holder. And this leads to the occurrence of local wrinkles in some types of hot stamping parts, which affect the quality of the parts. Through the hot stamping tool design and process test of a car ́s B pillar, it discovered that the local wrinkle in the part ́s big end is more severe. As a result the program was modified by taking advantage of the forming principle of the counter punch to improve the design of upper tool (die), which eliminated the local wrinkle in the big end and improved the contact cooling efficiency, consequently ensured the hot forming parts ́ quality and reduced the production rhythm.

scholarly journals Effectiveness of an evaporative charcoal cooler for the postharvest preservation of tomatoes and kales

2020 ◽  
Vol 66 (No. 2) ◽  
pp. 66-71
Author(s):  
Erick K. Ronoh ◽  
Christopher L. Kanali ◽  
Samuel N. Ndirangu
Keyword(s):  
Relative Humidity ◽  
Solar Radiation ◽  
Low Cost ◽  
Maximum Temperature ◽  
Cooling Efficiency ◽  
Maximum Temperature Difference ◽  
Light Rain ◽  
Colour Changes ◽  
Storage Technologies ◽  
Microclimate Conditions

The preservation of fresh produce can provide rural households with better diets all-year round and income by reducing their deterioration. Promotion of low-cost temporary storage technologies requires evidence of their effectiveness to attain conducive conditions. Therefore, this study was conducted to assess the effectiveness of an evaporative charcoal cooler for the preservation of tomatoes and kales. The cooler microclimate and outdoor conditions were investigated by measuring the air temperature and relative humidity. During the study period, the maximum temperature difference between the cooler and the outdoors was found to be 9.2 °C while the maximum relative humidity difference was 36.8%. Due to the presence of light rain and, consequently, low solar radiation, the temperature and relative humidity differences were significantly reduced. Despite the light rain, the cooler still registered a maximum relative humidity of 83.5% and a maximum cooling efficiency of 91.5%. Overall, the cooler demonstrated promising results in terms of favourable microclimate conditions, the shelf-life and colour changes for tomatoes and kales.

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