Effects of Flap Wheel Grinding Parameters on Surface Roughness for Stainless Steel

2014 ◽  
Vol 548-549 ◽  
pp. 506-509 ◽  
Author(s):  
Jirayu Somgumnerd ◽  
Viboon Tangwarodomnukun ◽  
Suksan Prombanpong
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Finish ◽  
Operating Conditions ◽  
Success Factor ◽  
Polishing Process ◽  
Fine Surface ◽  
Key Success Factor ◽  
Selection Of

The polishing process plays an important role in the stainless steel cookware since an appearance is one of the prime quality criterions of the product. Typically, there are three sequential steps in the polishing process using abrasive flap wheel, sisal and cloth respectively. The abrasive flap wheel is the first step in the process which aims to rapidly create fine surface finish on the product. Thus, the selection of appropriate flap wheel as well as operating conditions in order to achieve surface finish within the required cycle time i.e. 12 seconds are the key success factor. Therefore, the experimental design is conducted and analyzed. It is found that there are four factors which influence the surface roughness: grits size of flap wheel, polishing time, velocity, and force. It can also be concluded from the analysis that the roughness is directly proportional to grit size and force but it is inversely proportional to velocity. In addition, the optimal condition for the case study can also be obtained.

scholarly journals Fine Surface Finish of a Hardened Stainless Steel Using a New Burnishing Tool

2017 ◽  
Vol 10 ◽  
pp. 208-217 ◽  
Author(s):  
Fang-Jung Shiou ◽  
Shih-Ju Huang ◽  
Albert J. Shih ◽  
Jiang Zhu ◽  
Masahiko Yoshino
Keyword(s):  
Stainless Steel ◽  
Surface Finish ◽  
Fine Surface

Effects of Insert Nose Radius and Processing Cutting Parameter on the Surface Roughness of Aisi 316 Stainless Steel

2010 ◽  
Vol 447-448 ◽  
pp. 51-54
Author(s):  
Mohd Fazuri Abdullah ◽  
Muhammad Ilman Hakimi Chua Abdullah ◽  
Abu Bakar Sulong ◽  
Jaharah A. Ghani
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Finish ◽  
Feed Rate ◽  
Cutting Speed ◽  
Chip Thickness ◽  
Cutting Parameters ◽  
Depth Of Cut ◽  
Nose Radius ◽  
Aisi 316

The effects of different cutting parameters, insert nose radius, cutting speed and feed rates on the surface quality of the stainless steel to be use in medical application. Stainless steel AISI 316 had been machined with three different nose radiuses (0.4 mm 0.8 mm, and 1.2mm), three different cutting speeds (100, 130, 170 m/min) and feed rates (0.1, 0.125, 0.16 mm/rev) while depth of cut keep constant at (0.4 mm). It is seen that the insert nose radius, feed rates, and cutting speed have different effect on the surface roughness. The minimum average surface roughness (0.225µm) has been measured using the nose radius insert (1.2 mm) at lowest feed rate (0.1 mm/rev). The highest surface roughness (1.838µm) has been measured with nose radius insert (0.4 mm) at highest feed rate (0.16 mm/rev). The analysis of ANOVA showed the cutting speed is not dominant in processing for the fine surface finish compared with feed rate and nose radius. Conclusion, surface roughness is decreasing with decreasing of the feed rate. High nose radius produce better surface finish than small nose radius because of the maximum uncut chip thickness decreases with increase of nose radius.

Experimental Investigation for the Multi-objective Optimization of Machining Parameters on AISI D2 Steel Using Particle Swarm Optimization Coupled with Artificial Neural Network

2020 ◽  
Vol 19 (03) ◽  
pp. 589-606 ◽  
Author(s):  
Vipin Gopan ◽  
K. Leo Dev Wins ◽  
Gecil Evangeline ◽  
Arun Surendran
Keyword(s):  
Neural Network ◽  
Surface Roughness ◽  
Artificial Neural Network ◽  
Cutting Force ◽  
Surface Finish ◽  
Fitness Function ◽  
Machining Parameters ◽  
Swarm Optimization ◽  
Fine Surface ◽  
Aisi D2

High Carbon High Chromium (or AISI D2) Steels, owing to the fine surface finish they produce upon grinding, find lot of applications in die casting. Machining parameters affect the surface finish significantly during the grinding operation. In this context, this work puts an effort to arrive at the optimum machining parameters relating to fine surface finish with minimum cutting force. The material removal caused by the abrasive grinding wheel makes the process a very complex and nonlinear machining operation. In many situations, traditional optimization techniques fail to provide realistic optimum conditions because of the associated complexity. In order to overcome this issue, particle swarm optimization (PSO) coupled with artificial neural network (ANN) is applied in this research work for parameter optimization with the objective of achieving minimum surface roughness and cutting force. The machining parameters selected for the investigation were table speed, cross feed and depth of cut and the responses were surface roughness and cutting force. ANNs, inspired from biological neural networks, are well capable of providing patterns, which are too complex in behavior. The ANN model developed was used as the fitness function for PSO to complete the optimization. Optimization was also carried out using conventional response surface methodology-genetic algorithm (RSM-GA) approach in which regression equation developed with RSM was considered as the fitness function for GA. Confirmatory experiments were conducted and the comparison showed that PSO coupled with ANN is a reliable tool for complex optimization problems.

Development and Rheological Characterisation of Abrasive Flow Finishing Medium for Finishing Macro to Micro Features

2020 ◽  
Vol 70 (2) ◽  
pp. 190-196
Author(s):  
Sachin Singh ◽  
M. Ravi Sankar
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Recast Layer ◽  
Technological Advancement ◽  
Minimal Cost ◽  
Finishing Process ◽  
Fine Surface ◽  
Micro Features ◽  
Finishing Processes ◽  
Abrasive Flow Finishing

Technological advancement demands the manufacturing of components with a fine surface finish at a minimal cost. This scenario acts as the driving force for the research communities to develop economic finishing processes. Abrasive flow finishing (AFF) is one of the advanced finishing processes employed for finishing, deburring, radiusing and recast layer removal from the workpiece surfaces. AFF process uses a finishing medium that acts as a deformable tool during the finishing process. It is the rheological properties of the medium that profoundly influences the end surface finish obtained on the workpiece after the AFF process. In the current work, an attempt is made to develop an economic AFF medium by using viscoelastic polymers i.e., soft styrene and soft silicone polymer. Detailed static and dynamic characterisation of the medium is carried out. Later, to study the finishing performance of the developed medium, AFF experiments are performed for the finishing of macro and micro feature components. The experimental study showed that the nano surface finish could be achieved by varying the viscosity of the developed medium. Developed medium achieved 89.06 per cent improvement in surface roughness during finishing of tubes (macro feature component), while 92.13 per cent and 88.11 per cent surface roughness improvement is achieved during finishing of microslots and microholes (micro feature component), respectively.

Characterizing the Effect of Laser Power Density on Microstructure, Microhardness, and Surface Finish of Laser Deposited Titanium Alloy

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Rasheedat M. Mahamood ◽  
Esther T. Akinlabi ◽  
Mukul Shukla ◽  
Sisa Pityana
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Power Density ◽  
Surface Finish ◽  
Laser Power ◽  
Optical Microscope ◽  
Laser Power Density ◽  
Grain Structure ◽  
Selection Of

This paper reports the effect of laser power density on the evolving properties of laser metal deposited titanium alloy. A total of sixteen experiments were performed, and the microstructure, microhardness and surface roughness of the samples were studied using the optical microscope (OP), microhardness indenter and stylus surface analyzer, respectively. The microstructure changed from finer martensitic alpha grain to coarser Widmastätten alpha grain structure as the laser power density was increased. The results show that the higher the laser power density employed, the smoother the obtained surface. The microhardness initially increased as the laser power density was increased and then decreased as the power density was further increased. The result obtained in this study is important for the selection of proper laser power density for the desired microstructure, microhardness and surface finish of part made from Ti6Al4V.

Machinability Improvement on High Speed Ultrasonic Turning - The Effect of Tool Oscillating Direction and Tool Chip Shape

2016 ◽  
Vol 874 ◽  
pp. 302-307
Author(s):  
Keisuke Hara ◽  
Ryo Sasaki ◽  
Hiromi Isobe
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Processing Speed ◽  
High Speed ◽  
Principal Direction ◽  
Cutting Speed ◽  
Soft Magnetic ◽  
Chip Shape ◽  
Fine Surface ◽  
Ultrasonic Cutting

Ultrasonic cutting is a technique that can improve machinability such as fine surface, reduce tool worn out and etc. To improve processing speed of ultrasonic cutting is difficult due to the effects of tool oscillation are invalidated when cutting speed exceeds maximum tool oscillating velocity. In previous report, high speed principal direction ultrasonic turning experiments for stainless steel were carried out to improve processing speed and products quality. In ultrasonic turning, tool worn out and built up edge generation were reduced compare with ordinary turning. In this study, the effects of tool oscillating direction and tool chip shape for cutting properties of soft magnetic stainless steel were investigated. Cutting properties such as turned surface roughness, cutting force and ejected chip were compared.

Super Polishing Behaviour Investigation of Stainless Steel Optical Lens Moulding Inserts

2009 ◽  
Vol 404 ◽  
pp. 97-102
Author(s):  
Kui Liu ◽  
S.T. Ng ◽  
K.C. Shaw ◽  
G.C. Lim
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Quality ◽  
Optical Quality ◽  
Polishing Process ◽  
Optical Lens ◽  
Fine Diamond ◽  
Diamond Paste ◽  
Quality Surface

Super polishing experiments were carried out to investigate the effects of polishing parameters on surface quality of stainless steel lens moulding inserts, and to optimize polishing conditions. Experimental results indicated that optical quality surface of stainless steel lens moulding inserts can be achieved through a two-step polishing process: fast polishing with a soft wood head and coarse diamond paste, and fine polishing with a nylon-covered steel ball head and fine diamond paste. A diameter of 20 mm stainless steel lens moulding insert with a surface roughness Ra of 7.6 nm has been successfully achieved using the two-step super polishing process.

scholarly journals Promoting the creation of Innovation Ecosystems: the case of the University of Porto

2018 ◽  
Vol 6 (3) ◽  
pp. 8 ◽  
Author(s):  
Carlos Melo Brito
Keyword(s):  
Growth And Development ◽  
Success Factor ◽  
Policy Makers ◽  
Innovation Ecosystems ◽  
The University ◽  
Key Success Factor ◽  
Knowledge Valorisation

Universities are increasingly acting as promoters of innovation, economic growth and regional development, a trend that has attracted the attention of both policy makers and researchers. The objective of this paper is to contribute to a deeper understanding of the role of higher education institutions as dynamic promoters of growth and development. The University of Porto is used as a case study to explore how universities can act as innovation ecosystems leaders and integrators. The main contributions of the paper are threefold. First, the case puts in evidence a key success factor: the talent to transform the knowledge produced by universities into valuable solutions for companies and other organisations. Second, links between universities and industry must assume a long-term and relational nature rather than an intermittent and transactional character. Finally, the success of university-based ecosystems depends on the integration of a diversity of actors, resources and competences. This means that a sustainable strategy of innovation and knowledge valorisation requires an approach that fosters both internal and external networking.

Canon Financial Services, Inc.

2011 ◽  
pp. 39-59
Author(s):  
Ira Yermish
Keyword(s):  
Customer Service ◽  
Financial Services ◽  
Service Organizations ◽  
Success Factor ◽  
Credit Reporting ◽  
Wholly Owned Subsidiary ◽  
Complex Relationships ◽  
Leasing Company ◽  
Key Success Factor

Canon Financial Services, Inc. (CFS, www.cfs.canon.com) is a wholly owned subsidiary of CANON USA. Originally, an independent office products leasing company, CITILEASE, founded by Albert Smith who remains the president, CFS has grown to be an important financial arm for the U.S. Canon copier and office products business. Since CITILEASE was acquired in 1990, the operation has grown dramatically. In 1996, CANON USA recognized CFS as one of its premier divisions. A key success factor for this growth has been the strategic management of information within a corporate framework of outstanding customer service. The strong leadership of Smith and his organization as well as the commitment to information technology resources has fueled this explosive growth. In this case study we will first examine the structure of the copier and office products leasing industry. Few businesses find it desirable to purchase copiers, fax machines and other computer equipment. There are several reasons for this, not the least of which is the flexibility of capital in light of rapidly changing technological capabilities of the products being leased. The complex relationships of CANON dealers, independent dealers and service organizations, customers, credit reporting agencies, banks and CFS will be described, especially with respect to the complex flows of information necessary to complete the leasing application and contract tasks.

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