NDLI: An Examination of the Alternative Methods Used by the Investment Casting Industry to Produce Sacrificial Patterns: Have All of the Available Options Been Considered?

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Daniel, T. Winter
Copyright Year	2009
Abstract	The investment casting (IC) process has remained relatively unchanged throughout recorded history [1]. Indeed, there have been refinements to the individual processes required to produce castings; pattern making, the ceramic materials used to create the molds, foundry equipment, and post-cast processing of the castings. All have undergone numerous improvements. Yet, with the innovations that IC foundries have enjoyed, the casting process still requires a one-to-one ratio to produce an IC component from a sacrificial master pattern [2]. It is the alternative technologies used to produce the sacrificial master pattern that are the focus of this paper. New product development and introduction (NPDI) of an IC component requires the expertise of several engineering disciplines. Communications between the various engineering disciplines are critical to assure that cost effective decisions during product design and process development are made. With that in mind, several of the options available to the engineering teams responsible for NPDI are explored in the subsequent text. Rapid prototype (RP) technologies have played a crucial role during NPDI. The patterns produced using the various forms of RP technologies have allowed the IC industry to be considered by design engineers as a viable manufacturing option for their products. A more recent development in the United States is rapid tooling (RT). RT is an additive process, using metal to build the individual layers of the cavity block or the cavity insert. The finished component can then be used as a wax pattern cavity. Engineering teams should also consider a combination of RT and traditional wax pattern tooling. The complex pattern cavities are produced using RT while the more simple components are produced using traditional tooling. For IC foundries to be competitive all available pattern making options must be considered. Multi-disciplined engineering teams will play an important role choosing the technologies discussed. With careful consideration, the engineering teams responsible for NPDI can ensure the future of the IC industry.
Starting Page	351
Ending Page	356
Page Count	6
File Format	PDF
ISBN	9780791843772
DOI	10.1115/IMECE2009-12880
e-ISBN	9780791838631
Volume Number	Volume 4: Design and Manufacturing
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Rapid prototype Investment casting New product development and introduction Rapid tooling Rapid prototyping Product development Investment casting (process) Investment castings
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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