INVESTMENT CASTING INSTITUTE
  • Home
  • Members
    • Member Login
    • Member Benefits
    • Membership Application
    • Member Directory
    • Membership Rates
    • Testimonials
    • This Year's New Members
  • Resources
    • Administrative Resources >
      • Economic Charts >
        • ClearView Economics Archives
        • ITR Advisor Archives
      • Labor Law Archives
      • Surveys
    • Ask the Experts >
      • Answers to Ask the Expert Questions
    • Free Reference Materials
    • NFFS ICON Program
    • Publications >
      • ICI Publications
      • Atlas of Wax & Casting Defects
      • Ceramic Testing Guidebook
      • Standard Test Procedure for Pattern material
      • Process Videos >
        • Streaming Process Videos
    • What is Investment Casting?
  • Events & Trainings
    • Events >
      • AM4IC
      • ICI Calendar
      • Technical Conference & Expo >
        • Keynote Speakers
        • Technical Paper Guidelines
      • Regional Meetings
      • University Job Fairs
      • Webinars
      • WCIC 2025 Kobe, Japan
    • Trainings >
      • Process Control Seminar
      • Industry Certification
      • Process Control Standards Program
  • INCAST Magazine
    • Current Issue
    • INCAST Newsletter >
      • Archives
    • Editorial Calendar
    • INCAST Archives
    • Advertise
    • Classified Ads
    • Subscribe
  • Community
    • About Us >
      • Awards >
        • Casting Contest
        • University Casting Contest
        • Hall of Honor
        • Innovator of the Year
        • Member Emeritus
      • Investing in the Future Committee
      • Mission Statement
      • What Members are Saying
      • Governance >
        • Antitrust Policy
        • Bylaws
        • Board of Directors
        • Committee Charters
        • Past Presidents
      • Meet the ICI
      • Save Our History >
        • ICI Legacy
        • Pioneer Perspectives
        • Investment Casting Trends
      • Business Connect
      • Privacy Policy
      • Contact Us
    • Investment Casting as a Career
    • Invite us to visit your school
    • Intern Scholarship
    • University Wishlist
    • Equipment Donations
    • Student Resumes
  • Home
  • Members
    • Member Login
    • Member Benefits
    • Membership Application
    • Member Directory
    • Membership Rates
    • Testimonials
    • This Year's New Members
  • Resources
    • Administrative Resources >
      • Economic Charts >
        • ClearView Economics Archives
        • ITR Advisor Archives
      • Labor Law Archives
      • Surveys
    • Ask the Experts >
      • Answers to Ask the Expert Questions
    • Free Reference Materials
    • NFFS ICON Program
    • Publications >
      • ICI Publications
      • Atlas of Wax & Casting Defects
      • Ceramic Testing Guidebook
      • Standard Test Procedure for Pattern material
      • Process Videos >
        • Streaming Process Videos
    • What is Investment Casting?
  • Events & Trainings
    • Events >
      • AM4IC
      • ICI Calendar
      • Technical Conference & Expo >
        • Keynote Speakers
        • Technical Paper Guidelines
      • Regional Meetings
      • University Job Fairs
      • Webinars
      • WCIC 2025 Kobe, Japan
    • Trainings >
      • Process Control Seminar
      • Industry Certification
      • Process Control Standards Program
  • INCAST Magazine
    • Current Issue
    • INCAST Newsletter >
      • Archives
    • Editorial Calendar
    • INCAST Archives
    • Advertise
    • Classified Ads
    • Subscribe
  • Community
    • About Us >
      • Awards >
        • Casting Contest
        • University Casting Contest
        • Hall of Honor
        • Innovator of the Year
        • Member Emeritus
      • Investing in the Future Committee
      • Mission Statement
      • What Members are Saying
      • Governance >
        • Antitrust Policy
        • Bylaws
        • Board of Directors
        • Committee Charters
        • Past Presidents
      • Meet the ICI
      • Save Our History >
        • ICI Legacy
        • Pioneer Perspectives
        • Investment Casting Trends
      • Business Connect
      • Privacy Policy
      • Contact Us
    • Investment Casting as a Career
    • Invite us to visit your school
    • Intern Scholarship
    • University Wishlist
    • Equipment Donations
    • Student Resumes
Online Store
  • Ceramics and Mold Making
Back


Application of Dynamical Mechanical Analysis (DMA) to Probe the Rheological Behavior of Investment Casting Slurries
  
Author:Dr. Grant Bradley, Remet Corporation
Abstract:Measuring the rheological properties of abrasive fluids such as ceramic slurries used in precision investment casting has always been hard on the rheometer leading to scored and abraded components along with drifts in calibration. Dynamic Mechanical Analysis (DMA) is a technique used to measure the mechanical properties of a wide range of materials. Many materials, including polymers used in ceramic slurries, behave both like an elastic solid and a viscous fluid, thus the term viscoelastic.

In this paper, use of DMA in a shearing mode is explored as a reliable, repeatable method of obtaining rheological information over a range of shear values without damaging the instrument. Various foundry slurries are measured and compared with laboratory and experimental slurry systems. We report on correlation of rheological properties obtained by DMA compared to Brookfield laboratory viscometer. Measurements in shear mode provides PIC foundry customers with advantages not provided by any other measuring systems. For instance, samples can be run from high to low stiffness without any drastic volume and geometry changes to ensure correct measurements of viscoelastic properties of binder slurry systems.

DMA differs from other mechanical testing devices in two important ways. First, typical tensile test devices focus only on the elastic component. In many applications, the inelastic, or viscous component, is critical. It is the viscous component that determines properties such as green strength in investment cast ceramic shells. Second, tensile test devices work primarily outside the linear viscoelastic range. DMA works primarily in the linear viscoelastic range and is therefore more sensitive to structure of polymer based binders.

Keywords:Ceramics and Mold Making
Paper Pages:26
Paper Year:2015
Paper Index:2:308
Paper Source:82

Price:$25.00 

Quantity:
Picture
Copyright Investment Casting Institute.  All Rights Reserved.
1 Paragon Drive, Suite 110  |  Montvale, NJ 07645
Phone: (201) 573-9770 |  [email protected]

The Investment Casting Institute is a 501 (c)(6) organization.