Investigation into the Warm Extrusion for Micropart with Laser-Aided Heating Method

2008 ◽  
Vol 575-578 ◽  
pp. 462-467
Author(s):  
Yun Wang ◽  
Zhen Ying Xu ◽  
Pei Long Dong ◽  
Guo Ding Yuan ◽  
Lan Cai
Keyword(s):  
Laser Heating ◽  
Heating System ◽  
Recrystallization Temperature ◽  
Heating Method ◽  
Manufacturing Efficiency ◽  
Plastic Processing ◽  
Resistance To Deformation ◽  
New Process ◽  
Micro Electromechanical System ◽  
Warm Extrusion

The rapid market need of MEMS (Micro Electromechanical System) and metal microparts are increasing gradually. The plastic microforming has received more interests and applications in MEMS because it ensures high precision and manufacturing efficiency. However, it raises the higher demand on the microforming and plastic processing technology. Here we present one new process to micro-extrude microparts with laser-aided heating method. The new process is to selectively heat the workpiece with the laser radiation method to the suitable temperature that is between room temperature and recrystallization temperature, and to extrude the workpiece. This process is characterized by decreasing the influence of strain strengthening and lowering the resistance to deformation, and increasing the uniformity of material flow. The key elements of the approach concerning the warm micro-extrusion and temperature control, such as process parameters, laser heating system, micro-extrusion die structure, have been advanced. Furthermore, an important aspect of the research is that the developed system and theory of micro warm extrusion based on laser heating can be explored for further investigation and understanding of plastic microforming.

scholarly journals Development of New Product/Process Development Procedure for SMEs

Organizacija ◽  
2010 ◽  
Vol 43 (2) ◽  
pp. 76-86 ◽  
Author(s):  
Mateja Šenk ◽  
Peter Metlikovič ◽  
Matjaž Maletič ◽  
Boštjan Gomišček
Keyword(s):  
Automotive Industry ◽  
Process Development ◽  
Cost Management ◽  
Value Added ◽  
New Product ◽  
Quality Planning ◽  
Design For Six Sigma ◽  
Plastic Processing ◽  
New Process ◽  
Development Procedure

Development of New Product/Process Development Procedure for SMEsThe result of our research is a developed and implemented set of activities for new process or product development (NPD procedure) for SMEs environment in the plastic processing industry, which enables the production of products and services with a high value added.The developed NPD procedure consists of five consecutive and overlapping steps: attracting orders, designing a project, developing a product, developing a process and zero production series. Each distinct step is further divided into sub-activities supported by adequate methods and managed in an information system. Investigated and included were three different methodologies use for NPD procedure in the automotive industry such as Advanced Product Quality Planning (APQP), Design for Six Sigma (DFSS) and Stage/Gate methodology.The results presented in the paper show that the developed NPD procedure significantly improved NPD in terms of cost management and time-effectiveness.

scholarly journals Laser heating system at the Extreme Conditions Beamline, P02.2, PETRA III

2021 ◽  
Vol 28 (6) ◽  
Author(s):  
Zuzana Konôpková ◽  
Wolfgang Morgenroth ◽  
Rachel Husband ◽  
Nico Giordano ◽  
Anna Pakhomova ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Laser Heating ◽  
Melting Curve ◽  
Heating System ◽  
Laser Source ◽  
Extreme Conditions ◽  
Diamond Anvil Cells ◽  
X Ray ◽  
Diamond Anvil ◽  
Pulsed Laser Heating

A laser heating system for samples confined in diamond anvil cells paired with in situ X-ray diffraction measurements at the Extreme Conditions Beamline of PETRA III is presented. The system features two independent laser configurations (on-axis and off-axis of the X-ray path) allowing for a broad range of experiments using different designs of diamond anvil cells. The power of the continuous laser source can be modulated for use in various pulsed laser heating or flash heating applications. An example of such an application is illustrated here on the melting curve of iron at megabar pressures. The optical path of the spectroradiometry measurements is simulated with ray-tracing methods in order to assess the level of present aberrations in the system and the results are compared with other systems, that are using simpler lens optics. Based on the ray-tracing the choice of the first achromatic lens and other aspects for accurate temperature measurements are evaluated.

scholarly journals Fully Automated Lab-On-A-Disc Platform for Loop-Mediated Isothermal Amplification Using Micro-Carbon-Activated Cell Lysis

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4746
Author(s):  
Moo-Jung Seo ◽  
Jae-Chern Yoo
Keyword(s):  
Deoxyribonucleic Acid ◽  
Infrared Camera ◽  
Dna Amplification ◽  
Heating System ◽  
Cell Lysis ◽  
Heating Method ◽  
Standard Procedures ◽  
Spin Column ◽  
Full Automation ◽  
Real Temperature

Fast and fully automated deoxyribonucleic acid (DNA) amplification methods are of interest in the research on lab-on-a-disc (LOD) platforms because of their full compatibility with the spin-column mechanism using centrifugal force. However, the standard procedures followed in DNA amplification require accurate noncontact temperature control as well as cell lysis at a low temperature to prevent damage to the LOD platform. This requirement makes it challenging to achieve full automation of DNA amplification on an LOD. In this paper, a fully automated LOD capable of performing cell lysis and amplification on a single compact disc of DNA samples is proposed. The proposed system uses micro-carbon to heat DNA samples without damaging the LOD as well as a noncontact heating system and an infrared camera sensor to remotely measure the real temperature of the amplification chamber. Compared with conventional DNA amplification systems, the proposed system has the advantage of full automation of the LOD platform. Experimental results demonstrated that the proposed system offers a stable heating method for DNA amplification and cell lysis.

Anti-Freezing through Drainage Ensured by Heating with Double Thermal Resources for Construction Joints of Tunnels in Cold Area

2010 ◽  
Vol 168-170 ◽  
pp. 2648-2653
Author(s):  
Yi Min Wu
Keyword(s):  
Electrical Energy ◽  
Longitudinal Direction ◽  
Heating System ◽  
Heating Method ◽  
Freezing Method ◽  
Cold Area ◽  
Thermal Resources ◽  
Construction Joints ◽  
Secondary Lining ◽  
Effective Drainage

A new anti-freezing method for construction joints in tunnels is put forward through effective drainage ensured by heating with warm air or ribbon heater. The heating system is intelligently controlled according to the monitoring and analysis of the surface temperature of the secondary lining. This method is characterized as the following: (1) preventing leakage without pressure increase is realized through effective drainage at the back of secondary lining with special drainable channels; (2) alternative heating resources including warm air and electrical energy are offered to heat the region around construction joints, which can prevent the drainable channels from freezing and jamming; (3) for efficient and economy purpose, heating can be carried discontinuously as well as partly at circumferential and longitudinal direction. Numerical simulations validate the availability of heating method for anti-freezing.

Laser heating method for estimation of carbon nanotube purity

2002 ◽  
Vol 74 (3) ◽  
pp. 393-396 ◽  
Author(s):  
S.V. Terekhov ◽  
E.D. Obraztsova ◽  
A.S. Lobach ◽  
V.I. Konov
Keyword(s):  
Carbon Nanotube ◽  
Laser Heating ◽  
Heating Method
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