Mahimkar, C., Richards, V., Lekakh, S., Metal-Ceramic Shell Interactions During Investment Casting, Transactions Of
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Casting High Quality C12A
Casting High Quality C12A Valve Manufacturers Association of America March 2012 BRADKEN ENERGY PRODUCTS March 2012 Elaine Thomas, Director of Metallurgy Bradken Tacoma ASTM A217 C12A and ASME Code case 2197-7 Chemistry Element wt% C 0.08 – 0.12 Mn 0.30 – 0.60 Si 0.20 – 0.50 P 0.020 S 0.010 Mo 0.85 – 1.05 Cr 8.0 – 9.5 Nb 0.060 – 0.10 V 0.18 – 0.25 N 0.030 – 0.070 Al .02 Ti .01 Zr .01 2 © 2011 BRADKEN® QUALITY SYSTEM MANUAL 3 © 2011 BRADKEN® CERTIFICATES • ASME • ISO 9002:2002 • Det Norske Veritas • Nuclear Industry Assessment Committee (Audit) • American Bureau of Shipbuilding • LLOYDS Registrar • Boeing D6-56202 4 © 2011 BRADKEN® EMPLOYEE TRAINING • • TrainingTraining Manuals Manuals for Skilled for Skilled Positions Positions • • ContinuingContinuing Education Education From ProfessionalFrom Professional Society Participation Society Participation ––AmericanAmerican SocietySociety for forTesting Testing and Materials and Materials ––SteelSteel FoundersFounders Society Society of America of America ––AmericanAmerican FoundryFoundry Society Society ––AmericanAmerican WeldingWelding Society Society ––AmericanAmerican SocietySociety for forNon Non-destructive-destructive Testing Testing • • ContinuingContinuing Education Education From NationalFrom NationalConferences Conferences – Offshore Technical Conference – Offshore Technical Conference – Submarine Industrial Base ––SubmarineMarine Machinery Industrial Association Base Conference ––MarineHydro Vision Machinery Association ––HydroPower -VisionGen – Power-Gen 5 © 2011 BRADKEN® THE CASTING -
Precision Investment Casting Solutions
PRECISION INVESTMENT CASTING SOLUTIONS One stop MEDICAL/DENTAL APPLICATIONS for your Precision SPOKANE INDUSTRIES has been supplying quality precision investment castings to the medical and dental industry for over 10 Investment years. We utilize a state-of-the-art investment casting process to casting needs produce high quality, precision parts tailored for the application. Typical • Castings from 3g to 45Kg alloys poured at Spokane Industries include all stainless and carbon steel grades, in addition to low alloy materials. • Full In-House • Engineering Our experienced engineering team will • Metallurgy work with you on new designs, to assess • Design/Development existing parts or production problems, • Non-Destructive Test or identify casting conversions from • Physical Test weldments, fabrications and assemblies. • Finishing We can help optimize the design to take full advantage of the • Industry Leading Quality benefits of investment casting • On-Time Delivery and recommend solutions that reduce production complexity and cost, and increase reliability and quality. Please contact us for more information and quotes: (800) 541-3601 X110 • www.SpokaneIndustries.com • [email protected] Copyright© 2011 • Spokane Industries, Inc. Spokane Precision Castings Services • Capabilities Production Capabilities From a few grams up to 45kg Thousands of units per week Commonly Poured Alloys Carbon Steels Cobalt Based Materials Industries Low Alloy Steels Supported Lead-free Copper Based Alloys Nickel Based Alloys Include: Tool Steels -
Application of Investment Casting: a Review Paper
Pramana Research Journal ISSN NO: 2249-2976 Application of Investment Casting: A Review paper 1Rahul Ojha, 2Gourav, 3Rohit Goyal 1,2 B.E, student, Mech. Engg. Department, Chandigarh University, Mohali, India 3Assistant Professor, Department of Mechanical Engineering Department [email protected] [email protected] [email protected] Abstract Investment casting process is a type casting process of producing clear net shape, high- dimensional accuracy and intricate design. Consistent research effort has been made by various researchers from all over the world with an objective to explore the world of investment casting. This article highlights the advancements made and proposed at each step of investment casting and its applications in practical world . Investment casting is being used from years to manufacture parts such as weapons, jewellery item, idols and statues of god and goddess; this article reviews the present and future applications of the investment casting. The aim of this review article is to present state of art review of applications of investment casting since 3200 BC. This article is organized as follows: in section ‘Introduction’, introduction to investment casting and process is given ; in section ‘Application in Aerospace Industries’, background is given on the application of investment casting in aerospace and related industries; section ‘Biomedical applications of investment casting’ presents the medicine or biomedical applications of investment casting; section ‘Conclusion’ closes the article by offering conclusions. Keywords: investment casting, biomedical application and aerospace industry application. Introduction Investment casting is a manufacturing process that can be traced back over 5,000 years to ancient Egypt and China. It is utilized to cast a wide variety of items, including high- quality, high-performance industrial parts. -
Implementation of Metal Casting Best Practices
Implementation of Metal Casting Best Practices January 2007 Prepared for ITP Metal Casting Authors: Robert Eppich, Eppich Technologies Robert D. Naranjo, BCS, Incorporated Acknowledgement This project was a collaborative effort by Robert Eppich (Eppich Technologies) and Robert Naranjo (BCS, Incorporated). Mr. Eppich coordinated this project and was the technical lead for this effort. He guided the data collection and analysis. Mr. Naranjo assisted in the data collection and analysis of the results and led the development of the final report. The final report was prepared by Robert Naranjo, Lee Schultz, Rajita Majumdar, Bill Choate, Ellen Glover, and Krista Jones of BCS, Incorporated. The cover was designed by Borys Mararytsya of BCS, Incorporated. We also gratefully acknowledge the support of the U.S. Department of Energy, the Advanced Technology Institute, and the Cast Metals Coalition in conducting this project. Disclaimer This report was prepared as an account of work sponsored by an Agency of the United States Government. Neither the United States Government nor any Agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any Agency thereof. The views and opinions expressed by the authors herein do not necessarily state or reflect those of the United States Government or any Agency thereof. -
SAVED by the BELL ! the RESURRECTION of the WHITECHAPEL BELL FOUNDRY a Proposal by Factum Foundation & the United Kingdom Historic Building Preservation Trust
SAVED BY THE BELL ! THE RESURRECTION OF THE WHITECHAPEL BELL FOUNDRY a proposal by Factum Foundation & The United Kingdom Historic Building Preservation Trust Prepared by Skene Catling de la Peña June 2018 Robeson House, 10a Newton Road, London W2 5LS Plaques on the wall above the old blacksmith’s shop, honouring the lives of foundry workers over the centuries. Their bells still ring out through London. A final board now reads, “Whitechapel Bell Foundry, 1570-2017”. Memorial plaques in the Bell Foundry workshop honouring former workers. Cover: Whitechapel Bell Foundry Courtyard, 2016. Photograph by John Claridge. Back Cover: Chains in the Whitechapel Bell Foundry, 2016. Photograph by John Claridge. CONTENTS Overview – Executive Summary 5 Introduction 7 1 A Brief History of the Bell Foundry in Whitechapel 9 2 The Whitechapel Bell Foundry – Summary of the Situation 11 3 The Partners: UKHBPT and Factum Foundation 12 3 . 1 The United Kingdom Historic Building Preservation Trust (UKHBPT) 12 3 . 2 Factum Foundation 13 4 A 21st Century Bell Foundry 15 4 .1 Scanning and Input Methods 19 4 . 2 Output Methods 19 4 . 3 Statements by Participating Foundrymen 21 4 . 3 . 1 Nigel Taylor of WBF – The Future of the Whitechapel Bell Foundry 21 4 . 3 . 2 . Andrew Lacey – Centre for the Study of Historical Casting Techniques 23 4 . 4 Digital Restoration 25 4 . 5 Archive for Campanology 25 4 . 6 Projects for the Whitechapel Bell Foundry 27 5 Architectural Approach 28 5 .1 Architectural Approach to the Resurrection of the Bell Foundry in Whitechapel – Introduction 28 5 . 2 Architects – Practice Profiles: 29 Skene Catling de la Peña 29 Purcell Architects 30 5 . -
Fabrication of Ceramic Moulds Using Recycled Shell Powder and Sand with Geopolymer Technology in Investment Casting
applied sciences Article Fabrication of Ceramic Moulds Using Recycled Shell Powder and Sand with Geopolymer Technology in Investment Casting Wei-Hao Lee, Yi-Fong Wu, Yung-Chin Ding and Ta-Wui Cheng * Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; [email protected] (W.-H.L.); [email protected] (Y.-F.W.); [email protected] (Y.-C.D.) * Correspondence: [email protected] Received: 1 June 2020; Accepted: 29 June 2020; Published: 1 July 2020 Abstract: Lost-wax casting, also called precision casting, is the process of casting a duplicate metal sculpture cast an original sculpture. The ceramic shell mould used in lost-wax casting usually consists of several layers formed with fine zircon and granular mullite particles using silica gel as a binder. However, it is a complicated and time-consuming process. Large amounts of waste moulds that need to be disposed and recycled become an environmental concern. In this study, waste shell sand from the recycled mould and calcium carbonate/metakaolin were used as raw materials to prepare geopolymer slurry and coating. The influence of mixing ratio and the SiO2/K2O modulus of the alkali solution on the setting time and green/fired strength were evaluated. Ceramic shells with one to four layers of geopolymer slurry and waste sand sprinkling were fabricated and tested for their permeability and green/fired strength. It was found that geopolymer shells had higher green/fired strength and better permeability than the original zircon/mullite shell. For foundry practice, metal casts were fabricated using recycled ceramic shell moulds with one to four layers of geopolymer coating. -
Study of Ceramic Slurries for Investment Casting with Ice Patterns
Study of Ceramic Slurries for Investment Casting with Ice Patterns Qingbin Liu, Ming C. Leu Department of Mechanical and Aerospace Engineering University of Missouri – Rolla, Rolla, MO 65409 Harish Jose, Von L. Richards Department of Materials Science and Engineering University of Missouri – Rolla, Rolla, MO 65409 ABSTRACT Ice patterns generated by rapid freeze prototyping or a molding process can be used to make ceramic investment molds for metal castings. Due to the use of ice, the ceramic slurries must be poured around the pattern and cured at sub-freezing temperatures. Success of this process depends greatly on the mold strength after the gelation of the slurries. This paper describes the experimental results of the mold strength after the gelation of the slurries under different compositions. The parameters considered include mixing time, alumino-silicate vs. fused silica ratio, volume of binder, and volume of catalyst. The strength of the gelled slurries is examined by breaking test bars on a four-point bending apparatus. Weibull modulus for each trial is calculated based on the breaking strength from four-point bend tests. Analysis of variance for breaking strength and Weibull analysis is performed to evaluate the significance of the effect of each parameter. The casting of a bolt is used to demonstrate that metal castings of complex geometry can be fabricated using investment casting with ice patterns. 1. Introduction Every foundry has shell cracking problems in investment casting as a result of mechanical stress. To avoid the shell cracking problems, the investment casting process and the materials used must be strictly controlled. New approaches to improve the performance of investment casting process are constantly being sought. -
Extrusion Blow Molding ___Fiberg
Woman Owned Small Busines • ITAR Certified 710 South Patrick Drive • Satellite Beach, Florida 32937 321.536.2611 • [email protected] • www.rapidps.com ABS • POLYCARBONATE • POLYPHENYLSULFONE • ULTEM ADVANCED APPLICATIONS _____________________________ RTV MOLDS __________________________ Parts produced can be used in lots of different manufacturing applications. Parts built using RPS provide the fast, accurate and af- Parts can be painted, electroplated and drilled. They can also be used in ad- fordable patterns that drive RTV molding. By replacing vanced applications such as investment castings, RTV molding and sand cast- machined patterns, the entire process can be com- ing. Each application includes the benefits to using an RPS part with detailed pleted in 2-3 days. And unlike machining, complex instructions. and intricate shapes have no effect on the time or cost for the RPS pattern. ELECTROPLATING ____________________ Electroplating deposits a thin layer of metal on the RTV MOLDING SOLUBLE CORE _________ surface of a part built. This improves the part’s me- Complex geometries normally requiring core removal chanical properties and gives the appearance of pro- such as curved hoses, water tanks, bottles, and arterial duction metal or plated parts and provides a hard, structures are good examples where it may be helpful wear-resistant surface with reflective properties. to use this alternative method. Instead of building the core in thermoplastic material (traditional RPS build EXTRUSION BLOW MOLDING __________ process) the mold is built in the Water Soluble sup- Polycarbonate RPS molds are used in the blow port material making it easy to dissolve away the mate- molding process, reducing lead time and expense. -
Foundry Industry SOQ
STATEMENT OF QUALIFICATIONS Foundry Industry SOQ TRCcompanies.com Foundry Industry SOQ About TRC The world is advancing. We’re advancing how it gets planned and engineered. TRC is a global consulting firm providing environmentally advanced and technology‐powered solutions for industry and government. From solid waste, pipelines to power plants, roadways to reservoirs, schoolyards to security solutions, clients look to TRC for breakthrough thinking backed by the innovative follow‐ through of a 50‐year industry leader. The demands and challenges in industry and government are growing every day. TRC is your partner in providing breakthrough solutions that navigate the evolving market and regulatory environment, while providing dependable, safe service to our customers. We provide end‐to‐end solutions for environmental management. Throughout the decades, the company has been a leader in setting industry standards and establishing innovative program models. TRC was the first company to conduct a major indoor air study related to outdoor air quality standards. We also developed innovative measurements standards for fugitive emissions and ventilation standards for schools and hospitals in the 1960s; managed the monitoring program and sampled for pollutants at EPA’s Love Canal Project in the 1970s; developed the basis for many EPA air and hazardous waste regulations in the 1980s; pioneered guaranteed fixed‐price remediation in the 1990s; and earned an ENERGY STAR Partner of the Year Award for outstanding energy efficiency program services provided to the New York State Energy Research and Development Authority in the 2000s. We are proud to have developed scientific and engineering methodologies that are used in the environmental business today—helping to balance environmental challenges with economic growth. -
High Temperature Strength of Ceramic Moulds Applied in the Investment Casting Method
ISSN (1897-3310) ARCHIVES Volume 11 Special Issue 3/2011 of FOUNDRY ENGINEERING 121 – 124 Published quarterly as the organ of the Foundry Commission of the Polish Academy of Sciences 22/3 High temperature strength of ceramic moulds applied in the investment casting method J. Kolczyk*, J. Zych AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Moulding Materials, Mould Technology and Cast Non-Ferrous Metals, ul. Reymonta 23, 30-059 Crakow, Poland * Corresponding author. E-mail address: [email protected] Received 30.06.2011; accepted in revised form 27.07.2011 Abstract Ceramic casting moulds strength is an important factor, which influences the quality and properties of castings being produced by the investment casting method. It is especially important during mould pouring with liquid metal. Studies allowing determining the casting mould strength at high temperatures, that means at the ones at which the moulds are poured, are not numerous. None generally accepted (normalized) method for the assessment of such strength exists in practice. The new method of the ceramic moulds tensile strength investigation at high temperatures is described in the paper. Tests were performed at temperatures from 100 to 1100oC. The ceramic moulding sand was prepared of modern materials: colloidal silica – being a binder – and highly refractory ceramic materials. Keywords: Melted models, Ceramic forms, Strength, Colloid silicate 1. Introduction • pouring with liquid metal, the most often in a vacuum furnace, • The technology of casting production by means of investment casting knocking out and cleaning. casting has been already known for some centuries. This method Production of ceramic moulds by an investment casting method consists of a cyclic process of immersing the wax model is currently applied for production of multilayer moulds forming some sort of a shell. -
Quantifying Casting Quality Through Filling Conditions
2020 AFS Proceedings of the 124th Metalcasting Congress Paper 2020-051 (14 pages) Quantifying Casting Quality Through Filling Conditions Daniel Hoefert,1 David Weiss,1 Randy Oehrlein,2 Cory Sents,2 Travis Bodick,2 Chris Hastings,3 Jerry Thiel,4 Travis Frush,4 Leah Dunlay,4 Kip Woods,4 Robin Foley,5 John Griffin,5 Kyle Metzloff,6 Henry Frear6 1Eck Industries Inc., Manitowoc, WI; 2Carley Foundry Inc., Blaine, MN; 3Morris Bean & Co., Yellow Springs, OH, 4University of Northern Iowa, Waterloo, IA, 5University of Alabama/Birmingham, Birmingham, AL; 6University of Wisconsin/Platteville, Platteville, WI, Copyright 2020 American Foundry Society ABSTRACT This leaves us to wonder, is this also happening below the surface? Focused concern and education related to filling damage and oxide inclusions has been widely promoted among If entrained into the metal stream, even a thin oxide film the foundry industry in the past three decades; with may present a threat to the quality of a casting. Alumina special regards to aluminum.1 However, predicting the skin is insoluble to the melt and has a melting point more quantifiable damage that oxide film may cause to the than double that of molten aluminum.2 The interface of quality of aluminum castings during the filling process the folded skin (bifilm) will not bind to itself; essentially remains largely theoretical, due to a lack of supporting forming a crack. The density of alumina is nearly the data. The purpose of this experiment was to turn on and same as aluminum,3 making them difficult to observe turn off turbulent filling conditions consistent with bifilm with radiography. -
Transmission Case
Title Page --Aluminum MMC Transmission Case A Design Study in Metal Matrix Composite Castings Transmission Case for the Advanced Amphibious Assault Vehicle Design Study Outline Introduction Designing for Performance Alloy Selection Designing for Castability Orientation in the Mold Metal Flow and Thin-Wall Fill Gating/Rigging Design Tooling Machining Lessons Learned and Summary Start the Design Study ! Next Acknowledgment -- The metalcasting design studies are a joint effort of the American Foundry Society and the Steel Founders' Society of America. Project funding was provided by the American Metalcasting Consortium Project, which is sponsored by the Defense Logistics Agency, Attn: DLSC-T, Ft. Belvoir, VA, 22060-6221 Copyright 2001 by the American Foundry Society In cooperation with All rights reserved. Address comments to: [email protected] Eck Industries Return to AFS Last Modified:September, 2001 by STG Home Page file:///C|/Documents%20and%20Settings/Administrator.ROB3/Desktop/dev/tutorials/aaavtrans/default.htm [2/6/2002 12:25:34 PM] Application A Design Study in Metal Matrix Composite Castings - AAAV Transmission Case Transmission Case - Application The Application -- This component is the transmission case for the Advanced Amphibious Assault Vehicle (AAAV) being developed for the U.S. Marine Corps. The AAAV is a high water-speed amphibious armored personnel carrier designed to replace the current family of Marine Corps assault amphibians. The AAAV will weigh about 37 The AAAV provides a tactical assault capability for Marines on amphibious ships standing well tons, be able to carry 17 combat offshore—even over the horizon—from the equipped Marines and a crew of 3 objective. The vehicle will rapidly transport the landing force over the beachhead to an objective over 3 ft.