scholarly journals Optimization of process parameters in the RF-DC plasma N2-H2 for AISI420 molds and dies

2019 ◽  
Author(s):  
Hengky Herdianto ◽  
Dionisius Johanes Djoko Herry Santjojo ◽  
Masruroh
Keyword(s):  
Process Parameters ◽  
Substrate Surface ◽  
Xrd Analysis ◽  
Iron Nitrides ◽  
Dc Plasma ◽  
Precision Forging ◽  
Optimization Of Process Parameters ◽  
Dc Bias ◽  
Substrate Surfaces

The RF-DC plasma N2-H2 was used to make precise AISI420 molds and dies have complex textured geometry. The quality of the molds and dies directly affect the quality of the produced parts. The excellent examples of molds were used for injection molding lenses and dies used for the precision forging of automotive drive train components. In this study, a temperature, DC bias, and duration as process parameters of the RF-DC plasma N2-H2 have been optimized for molds and dies fabrication. The mask-less micro-patterned method was utilized to draw the initial 2D micro patterns directly onto the AISI420 substrate surface. The unprinted substrate surfaces were selectively nitrided by the RF-DC plasma N2-H2 at 673 K for 5400 s by 70 Pa with hollow cathode device. Energy Dispersive X-ray was utilized to describe the nitrogen content distribution at the vicinity of the border between the unprinted surfaces. This exclusive nitrogen mapping proves that only the unprinted parts of the substrate have high content nitrogen solutes. XRD analysis was performed to investigate whether the iron nitrides were precipitated by RF-DC plasma N2-H2 in the AISI420.

Research on the Properties of Milling and the Process Parameters Optimization for Aluminum-Alloy Thin-Walled Parts

2010 ◽  
Vol 44-47 ◽  
pp. 2842-2846
Author(s):  
Xiao Hui Jiang ◽  
Bei Zhi Li ◽  
Jian Guo Yang ◽  
He Long Wu
Keyword(s):  
Aluminum Alloy ◽  
Process Parameters ◽  
Low Cost ◽  
Parameters Optimization ◽  
Milling Parameters ◽  
Milling Simulation ◽  
Optimization Of Process Parameters ◽  
Thin Walled ◽  
Parts Manufacturing

In this paper, with the milling processing of aluminum-alloy thin-walled parts as the research object, using software AdvantEdge, a milling simulation model is developed to study milling parameters affect on the cutting force, heat and catenation. It is found that by adjusting the ratio of milling parameters, the effects of cutting forces and heat can turn to the favorable direction of workpiece. In addition, we combine numerical simulation with experiments to explore the law of optimization of process parameters. It is discovered that the method of improving the milling speed and reducing the cutting depth properly can ensure the milling efficiency and the quality of the workpiece, providing a scientific insight for achieving high-quality, low-cost and efficient thin-walled parts manufacturing.

Research on Technological Parameters of Laser Cladding

2011 ◽  
Vol 117-119 ◽  
pp. 236-240
Author(s):  
Zhong Tang Gao ◽  
Min Hua Zhang
Keyword(s):  
Tissue Distribution ◽  
Laser Cladding ◽  
Process Parameters ◽  
Particle Distribution ◽  
Substrate Surface ◽  
Scanning Speed ◽  
Hard Phase ◽  
Technological Parameters ◽  
Cladding Layer

Send laser cladding experiments to the substrate surface in 16Mn in the Synchronous way. By different laser cladding parameters on the microstructure and mechanical properties under the comparative analysis, to make a more detailed discussion of laser cladding power and scanning speed on the quality of laser cladding. Different process parameters on the microstructure of cladding layer and the cladding layer of particle distribution and the tissue distribution of species .We get to the study that type and distribution of the cladding layer microstructure and tissue distribution of tungsten carbide hard phase. We get regular pattern that technological parameter has an effect on the quality of cladding layer. We can came to the conclusion that the best cladding process parameters is in the power of 3.0KW and cladding speed 1000mm/min.

Laser prototyping of printed circuit boards

2013 ◽  
Vol 21 (3) ◽  
Author(s):  
M. Nowak ◽  
A. Antończak ◽  
P. Kozioł ◽  
K. Abramski
Keyword(s):  
Solid State ◽  
Process Parameters ◽  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Conversion Algorithm ◽  
Optimization Of Process Parameters ◽  
Laser Systems ◽  
Basic Parameters

AbstractThis paper describes the application of laser micromachining to rapid prototyping of printed circuit boards (PCB) using nano-second lasers: the solid-state Nd:YAG (532/1064 nm) laser and the Yb:glass fiber laser (1060 nm). Our investigations included tests for various mask types (synthetic lacquer, light-sensitive emulsion and tin). The purpose of these tests was to determine some of the basic parameters such as the resolution of PCB prototyping, speed of processing and quality of PCB mapping with commonly available laser systems. Optimization of process parameters and the proposed conversion algorithm have allowed us to produce circuit boards with a resolution similar to that of the Laser Direct Imaging (LDI) technology.

scholarly journals Optimization of process parameters in the RF-DC plasma N2-H2for AISI420moldsanddies

2017 ◽  
Vol 909 ◽  
pp. 012027 ◽  
Author(s):  
Hengky Herdianto ◽  
D.J. Djoko ◽  
H. Santjojo ◽  
Masruroh
Keyword(s):  
Process Parameters ◽  
Dc Plasma ◽  
Optimization Of Process Parameters

scholarly journals Study on Simulation of Stamping Process and Optimization of Process Parameters of Fender

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Peng Wu ◽  
Youming Wang ◽  
Peng Wan
Keyword(s):  
Taguchi Method ◽  
Process Parameters ◽  
Influence Factors ◽  
Sheet Thickness ◽  
Orthogonal Test ◽  
Optimal Combination ◽  
Technological Parameters ◽  
Element Analysis ◽  
Optimization Of Process Parameters

In order to obtain the optimum technological parameters of fender forming, the finite element analysis software DYNAFORM is used to simulate the drawing process of fender in this paper. The orthogonal test is designed and completed. On the basis of the orthogonal test, Taguchi method is used to design the orthogonal inner table, and the SNR of each factor at each level is calculated. The results of Taguchi method are analyzed with variance analysis, and the adjustable influencing variables and influence factors on quality stability that affect the forming quality of the fender are obtained. Experimental optimization of the adjustable variables is carried out again to obtain the optimal combination of process parameters that affect the shaping quality of the fender. The optimal combination of process parameters is as follows: blank holder force is 120 kN, model clearance is 1.0 t (t represents sheet thickness), friction coefficient is 0.11, and radius of die is 6 mm. Finally, the experimental results show that the fender manufactured with this combination of process parameters has better performance.

The Optimization of Process Parameters by Fixed Abrasive Pad for Lapping Magnesium Aluminate Spinel

2016 ◽  
Vol 693 ◽  
pp. 973-981
Author(s):  
Zhan Kui Wang ◽  
Yan Ling Zheng ◽  
Jian Guo Yao ◽  
Jian Xiu Su
Keyword(s):  
Surface Quality ◽  
Process Parameters ◽  
Removal Rate ◽  
Orthogonal Experiment ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Optimization Of Process Parameters ◽  
Fixed Abrasive Pad ◽  
Fixed Abrasive

The process parameters affect the lapping efficiency and the surface quality of work pieces. The fixed abrasive pad of w3-5 diamond abrasive was used for lapping magnesium aluminate spinel wafers in orthogonal experiment. The affection of lapping pressure, plate speed and slurry type on material removal rate (MRR) and surface roughness Ra were investigated. Finally, the process parameters were optimized. The results showed that lapping efficiencies were higher and the surface quality was better on the conditions of Zhongjing slurry, lapping pressure 10.37Kpa and plate speed 100rpm.

scholarly journals Optimization of Process Parameters in CFRP Machining with Diamond Abrasive Cutters

2011 ◽  
Vol 223 ◽  
pp. 774-783 ◽  
Author(s):  
Aude Boudelier ◽  
Mathieu Ritou ◽  
Sebastien Garnier ◽  
Benoît Furet
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
Optimum Process ◽  
Cutting Energy ◽  
Optimization Of Process Parameters ◽  
Trimmed Surface ◽  
Cutting Mechanisms ◽  
Limiting Values ◽  
Diamond Abrasive

The present paper proposes a methodology to optimize process parameters for trimming applications with diamond abrasive cutters. This methodology is based on the study of quality of trimmed surface, through material integrity and surface roughness, and on the study of cutting mechanisms. Their evolutions according to tool parameters and cutting conditions have been analysed. Results show that diamond grits size must be chosen according to the required surface roughness. Feedrate must respect cutting limitations due to CFRP removal mechanisms with abrasive cutters, which have been identify through analyses of specific cutting energy. Finally, a protocol in two steps is proposed to determine the optimum process parameters according to the application. Firstly, constraint functions due to respect of quality and to limiting cutting phenomena are defined. Thus, limiting values of process parameters are determined. Then, process parameters are selected in order to optimize productivity.

scholarly journals Optimization of Process Parameters for Robotic Fibre Placement

2018 ◽  
Vol 36 (4) ◽  
pp. 693-700
Author(s):  
Pan Zhao ◽  
Yaoyao Shi ◽  
Chao Kang ◽  
Tao Yu ◽  
Bo Deng ◽  
...  
Keyword(s):  
Process Parameters ◽  
Healing Process ◽  
Contact Process ◽  
Reliability And Validity ◽  
Optimum Process ◽  
Intimate Contact ◽  
Fiber Placement ◽  
Optimization Of Process Parameters ◽  
Cylindrical Parts

Compared with labour-intensive and time-consuming processing of conventional fabrication methods, the robotic fiber placement process greatly improves the flexibility of the fiber placement process and allows for the construction of more complex structures. Based on the study of the placement process, the intimate contact process and healing process were analysed theoretically. The key process parameters for affecting the quality of the composite component were put forward:hot gas torch temperature, compaction force and laying velocity. In order to analyse the fabrication process for laying the cylindrical parts with 0-degree tow direction, the model of the process parameters coupling affected the interlaminar bond strength was established, according to the design of the response surface method. The reliability and validity of the model were verified by the analysis of variance. The optimal process parameters of fiber placement were obtained. The results show that the model is effective and the optimum peeling force of the laying products is 24.1 N under the optimum process parameters.

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