A cost-effective approach for rapid manufacturing a low pressure wax injection mold with high surface finish and high dimensional accuracy

2013 ◽  
Vol 44 (4) ◽  
pp. 330-339 ◽  
Author(s):  
C.-C. Kuo ◽  
S.-J. Su
Keyword(s):  
Surface Finish ◽  
High Surface ◽  
Dimensional Accuracy ◽  
Cost Effective ◽  
Low Pressure ◽  
High Dimensional ◽  
Rapid Manufacturing ◽  
Injection Mold ◽  
Cost Effective Approach ◽  
Wax Injection

scholarly journals A Cost-Effective Method for Rapid Manufacturing a Precision Mold With Microstructures Using Hybrid Manufacturing Technologies

2021 ◽  
Author(s):  
Chil-Chyuan Kuo ◽  
Bo-Han Lin ◽  
Zheng-Ting Luo
Keyword(s):  
Injection Molding ◽  
Dimensional Accuracy ◽  
Cost Effective ◽  
Numerical Control ◽  
Rapid Manufacturing ◽  
Injection Mold ◽  
Molded Part ◽  
Cost Effective Method ◽  
Length Width ◽  
Manufacturing Technologies

Abstract Injection molding is a cost-effective to manufacture molded products by injection molding machine. A precision part with microstructures can be fabricated effectively through a precision mold. In this study, a cost-effective method for rapid manufacturing a precision component and a precision injection mold with microstructures by integrating additive manufacturing, rapid tooling, and computer numerical control milling. It was found that of the dimensional accuracy of a precision component in the length, width, and height can be controlled at approximately 30 µm. Injection molding was performed using an injection mold with microstructures with a microstructure of 950 µm and the dimensional accuracy of a molded part in the length, width, and microstructure can be controlled at approximately 60 µm, 50 µm, and 10 µm, respectively. The remarkable findings of this study can be used for the fabrication of molds or dies efficiently and economically for trial production in the mold industry since the quality of the precision component and the precision mold can meet the standards of the general industry.

scholarly journals Metal Machining—Recent Advances, Applications, and Challenges

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 580
Author(s):  
Francisco J. G. Silva
Keyword(s):  
Surface Finish ◽  
Manufacturing Process ◽  
Dimensional Accuracy ◽  
Machining Process ◽  
High Dimensional ◽  
Manufacturing Processes ◽  
Recent Advances ◽  
Metal Machining ◽  
Rapid Manufacture

Though new manufacturing processes that revolutionize the landscape regarding the rapid manufacture of parts have recently emerged, the machining process remains alive and up-to-date in this context, always presenting itself as a manufacturing process with several variants and allowing for high dimensional accuracy and high levels of surface finish [...]

Electroplating and Electroless Plating Process Development for DuPont™ GreenTape™ 9K7 LTCC

2013 ◽  
Vol 2013 (CICMT) ◽  
pp. 000283-000287
Author(s):  
Allan Beikmohamadi ◽  
Steve Stewart ◽  
Jim Parisi ◽  
Mark McCombs ◽  
Michael Smith ◽  
...  
Keyword(s):  
Thick Film ◽  
Surface Finish ◽  
Electroless Plating ◽  
Process Development ◽  
Cost Effective ◽  
Electroless Nickel ◽  
Free Atmosphere ◽  
Gold Plating ◽  
Cost Effective Approach ◽  
Easy Integration

Low Temperature Co-fired Ceramic (LTCC) technology provides an attractive packaging platform for microwave and millimeter wave circuits and systems due to its unique properties. Generally, thick film gold or silver conductors are used as metallizations on LTCC substrates along with occasional use of copper thick films. This paper reports methods and results of extensive process development experiments DuPont Microcircuit Materials has undertaken to establish a commercially viable plating process for the market leading DuPont™ GreenTape™ 9K7 LTCC system. Both Electroplating and Electroless plating processes are investigated in this work. These techniques provide certain advantages when used in isolation or in combination with standard thick film metallizations, helping to extend their applicability. Electroplating of copper on LTCC provides a means of using copper as the external conductor without having to use complicated firing processes in oxygen-free atmosphere as required for copper thick film. This approach leads to a much more cost effective approach if copper is required as the external metal. Electroless Nickel/Gold plating (ENIG) of both silver and copper (electroplated and/or thick film) provides an industry standard, highly reliable, robust surface finish. Such surface finish enables easy integration of both soldering and wire bonding processes.

Dimensional Accuracy in PolyJet Printing: A Literature Review

2019 ◽  
Author(s):  
Ketan Thakare ◽  
Xingjian Wei ◽  
Zhijian Pei
Keyword(s):  
Additive Manufacturing ◽  
Layer Thickness ◽  
Surface Finish ◽  
Dimensional Accuracy ◽  
High Dimensional ◽  
Control Variables ◽  
Current Trends ◽  
Manufacturing Methods ◽  
Polyjet Printing ◽  
Part Orientation

Abstract PolyJet printing process is one of the additive manufacturing methods to print parts with high dimensional accuracy. To date, dimensional accuracies of such process have been investigated by a number of studies. This review will summarize those studies, and identify current trends. With respect to methods of measurements used in the reported studies, it is noted that no special preference is given to use of any method. In addition, the effects of four control variables of PolyJet process: part orientation, layer thickness, surface finish type and materials, on dimensional accuracy are noted based on the results of reported studies. There is consistency in results in studies considering control variables of layer thickness, surface finish type and materials. However, the results are inconsistent in studies considering part orientation.

Ultrafine oxygen-defective iridium oxide nanoclusters for efficient and durable water oxidation at high current densities in acidic media

2020 ◽  
Vol 8 (46) ◽  
pp. 24743-24751
Author(s):  
Zhipeng Yu ◽  
Junyuan Xu ◽  
Yifan Li ◽  
Bin Wei ◽  
Nan Zhang ◽  
...  
Keyword(s):  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Surface ◽  
High Surface Area ◽  
Current Collector ◽  
Cost Effective ◽  
High Current ◽  
Acidic Media ◽  
Cost Effective Approach ◽  
Current Densities

Ultrafine IrOx nanoclusters are immobilized on a hydrothermally treated high-surface-area titanium current collector via a simple and cost-effective approach, showing outstanding performance for the oxygen evolution reaction at high current densities in acidic media.

Innovative And Cost-Effective Microfabrication Of Nanoceramic Components

2001 ◽  
Vol 703 ◽  
Author(s):  
Balakrishnan G. Nair
Keyword(s):  
High Temperature ◽  
High Surface ◽  
Cost Effective ◽  
Processing Technique ◽  
High Dimensional ◽  
Dimensional Tolerance ◽  
Surface Areas ◽  
Ceramic Components ◽  
Packaging Industry ◽  
Very High

ABSTRACTAn innovative and cost-effective processing technique has been developed at Ceramatec Inc for the microfabrication of ceramic components requiring very high dimensional tolerance. The materials system is a proprietary nanophase composition called CERCANAM (CERamatec CAstable NAno Material). Scanning electron microscopy revealed that CERCANAM components can be fabricated with dimensional tolerance as high as ± 2 [.proportional]m for surface features on the die that have dimensions about 1 mm. The process can also be modified to fabricate nanoporous ceramic components with very high surface areas. Components with retained surface areas as high as 67-82% of the starting powder were fabricated. The fabrication process does not involve a high-temperature sintering step, which eliminates the loss of surface area from high temperature sintering. It is anticipated that microcomponents fabricated with specific microstructures and properties will have applications in the optical fiber industry as interconnects, in the electronic packaging industry and the chemical industry.

Prediction and Investigation of Surface Quality in High Speed End-Milling of Silicon to Eliminate Conventional Finishing Operations

2011 ◽  
Vol 418-420 ◽  
pp. 1237-1241
Author(s):  
A.K.M. Nurul Amin ◽  
Mohd Dali M Ismail ◽  
Muhammad Iqbal Musa ◽  
Anayet Ullah Patwari
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
High Speed ◽  
End Milling ◽  
High Surface ◽  
Small Diameter ◽  
Dimensional Accuracy ◽  
Cutting Parameters ◽  
Machining Process ◽  
Dry Cutting

Surface finish and dimensional accuracy are two of the most important requirements in machining process. High speed machining (HSM) is capable of producing parts that require little or no grinding/lapping operations within the required machining tolerances. In HSM determination of the optimum combination of cutting parameters for achieving the required level of quality, such as, minimum possible surface roughness and maximum tool life is a very important task. Silicon is conventionally finished using grinding followed by polishing and lapping to achieve required surface finish and surface integrity. In this study small diameter tools are used to achieve high rpm to facilitate the application of low values of feed and depths of cut to ensure high surface roughness values through achievement of ductile mode machining of silicon. Investigations on the effect cutting parameters of high speed end milling on surface finish and integrity of silicon has been conducted to minimizing the amount of finishing requirement in machining of silicon, with the objective of reducing cost and increasing effectiveness of silicon manufacturing process. In this work statistical models were developed using the capabilities of Response Surface Methodology (RSM) to predict the surface roughness in high speed flat end milling of silicon under dry cutting conditions.

scholarly journals Dechlorination of Environmental Contaminants Using a Hybrid Nanocatalyst: Palladium Nanoparticles Supported on Hierarchical Carbon Nanostructures

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Hema Vijwani ◽  
Abinash Agrawal ◽  
Sharmila M. Mukhopadhyay
Keyword(s):  
Carbon Tetrachloride ◽  
Palladium Nanoparticles ◽  
Carbon Nanostructures ◽  
High Surface ◽  
High Surface Area ◽  
Cost Effective ◽  
Carbon Supports ◽  
Microcellular Foam ◽  
Cost Effective Approach ◽  
New Type

This paper demonstrates the effectiveness of a new type of hybrid nanocatalyst material that combines the high surface area of nanoparticles and nanotubes with the structural robustness and ease of handling larger supports. The hybrid material is made by fabricating palladium nanoparticles on two types of carbon supports: as-received microcellular foam (Foam) and foam with carbon nanotubes anchored on the pore walls (CNT/Foam). Catalytic reductive dechlorination of carbon tetrachloride with these materials has been investigated using gas chromatography. It is seen that while both palladium-functionalized carbon supports are highly effective in the degradation of carbon tetrachloride, the rate of degradation is significantly increased with palladium on CNT/Foam. However, there is scope to increase this rate further if the wettability of these structures can be enhanced in the future. Microstructural and spectroscopic analyses of the fresh and used catalysts have been compared which indicates that there is no change in density or surface chemical states of the catalyst after prolonged use in dechlorination test. This implies that these materials can be used repeatedly and hence provide a simple, powerful, and cost-effective approach for dechlorination of water.

scholarly journals Chemical vapor treatment to improve surface finish of 3D printed polylactic acid (PLA) parts realized by fused filament fabrication

2021 ◽  
Author(s):  
Fulvio Lavecchia ◽  
Maria Grazia Guerra ◽  
Luigi Maria Galantucci
Keyword(s):  
Polylactic Acid ◽  
Surface Finish ◽  
Chemical Treatment ◽  
Low Cost ◽  
High Surface ◽  
Chemical Vapor ◽  
Cost Effective ◽  
Fused Filament Fabrication ◽  
Before And After ◽  
Roughness Analysis

AbstractFused filament fabrication (FFF) is one of the most extensively used 3D printing process for its several advantages and the possibility to obtain complex geometries. Different materials can be processed and polylactic acid (PLA), a thermoplastic biodegradable cost-effective material, is widely used for consumer FFF. Typically, PLA printed parts have high surface roughness, due to the staircase effect, the slice-to-slice construction texture and the filament deposition. In this work, authors propose a quantitative analysis of the effects of a chemical treatment based on ethyl acetate vapors, to improve the surface finish of PLA printed parts. The solvent was selected for its low toxicity, easy availability, and low cost. To validate the treatment, a 23 full factorial plan was designed and a roughness analysis before and after the chemical treatment was performed to highlight the influence of each parameter involved.

Sign in / Sign up

Export Citation Format

Share Document