15th WCIC Agenda TUESDAY, AUGUST 23, 2022


7:00 a.m. – 5:30 p.m. REGISTRATION – Disneyland Center Lounge 8:00 a.m. – 8:05 a.m. GENERAL SESSION – Disneyland Center Ballroom Greeting


8:05 a.m. – 9:05 a.m. Panel Discussion: Process Control Standards (PCS) for Investment Castings – Global Rollout Brian Ferg, Member Emeritus Joseph Fritz, Investment Casting Institute Thad Nykiel, Kovatch Castings Inc. Tom Planz, Kovatch Castings Inc. Nip Singh, S&A Consulting Group LLP


As Process Control is critical to the manufacture of


investment castings worldwide, we would like to involve all sectors of investment casting in all countries. This panel will present the current status of the Process Control Standards (PCS) and also will detail how EICF and JFS Members can start using this ICI Member benefit. The task force on PCS, a subgroup under the Education Committee, has made considerable strides in the rollout of the program for North American ICI Members since our last presentation at ICI 68th Technical Conference in 2021. The training program for surveyors (Internal/Independent)


certification was developed by the core team, tested, and is now available on the Tune’Em platform for certification. As of abstract submission, the ICI has certified its first Independent Surveyor, two Internal Surveyors and is actively seeking to certify additional surveyors. At this time, one North American foundry has received its Bronze Certification. The Core PCS Team has established a Process Control


Standard Certification Panel (PCSCP), comprised of several of the original members from that Team. This panel is responsible for the oversight of the day-to-day operation of the Program, and as part of the “panel discussion”, the team will detail ongoing operations. Certified foundries and surveyors will be invited to share their PCS experiences with WCIC Delegates. The PCS Core Team will join the panel to answer any questions.


9:05 a.m. – 9:35 a.m. Thermal Properties Evaluation of IC Shell by Hot Disk Transient Plane Source Method, Artem Trofimov, Orton Ceramic Foundation, Booth No. 523 Nip Singh, S&A Consulting Group LLP, Thermal properties of investment casting (IC) shells


have a strong influence on the cooling, solidification, thus, mechanical properties of casting. Simulation/modeling of IC process also requires thermal properties (thermal conductivity; specific heat, etc.) and its accuracy is highly dependent on the measurements of these properties. Traditional methods to measure thermal properties of the shells are a hot wire (only measures thermal conductivity) and


®


a laser flash (only measures through-plane thermal diffusivity). The hot wire method requires very large and thick samples (ca. 1 inch thick), which often is too big for the shell system. The laser flash calls for (1) very small samples (0.5-inch diameter, 1-3 mm thick), which might not be representative of the shell due to pores, composition and microstructure variations, and (2) additional measurements of heat capacity and density to calculate thermal conductivity – therefore, resulting thermal conductivity combines errors of obtaining diffusivity, heat capacity, and density. In this work, Hot Disk Transient Plane Source technique


is proposed since it allows different size samples to be tested (from a few millimeters and larger) simulating actual shell used in the foundry, provides both thermal conductivity and thermal diffusivity from a single measurement (therefore, enabling the calculation of volumetric heat capacity), and capable of differentiating between through-plane and in-plane thermal properties (assuming known heat capacity of the samples). Different shell systems (materials and number of coats) for different desired properties of castings will be investigated and reported.


9:35 a.m. – 10:05 a.m. Advanced Core Removal for the Modern IC Foundry Howard Pickard, Andrew Smith, LBBC Technologies, Booth No. 409 As core systems become increasingly complex in terms of material and geometry, LBBC Technologies present recent advances to autoclave ceramic core removal systems. With foundries looking to be more efficient in every area of their operation, having the ability to make real time decisions is crucial to their overall success. This paper presents new advancements in how the


temperatures and respective pressures of operation can now be up to 500ºF and 500psi to enable the removal of silica and alumina/quartz content. How operating at these temperatures and pressures requires new advances in system design to ensure the balance between practical,


reliable operation


against a high level of safety system. Aligned to these operating developments, this paper will discuss the advancements of control systems and online connectivity capabilities for the modern autoclave equipment. The paper will present how using the latest cloud data management analysis techniques allows the foundry the ability to stay and be connect and analysis real time data of the pressure vessels. This has in turn helped the modern foundry by leveraging this connectivity to improve efficiency of operation and quality of output as well as improving the overall equipment performance.


10:05 a.m. – 10:20 a.m. BREAK


10:20 a.m. – 10:50 a.m. ICI Intern Project Report Nolan Sykes, Concurrent Resources LLC


August 2022 ❘ 27


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