Investment casting design guidelines

Investment Cast. More Information: Investment Casting Using Stereolithgraphy. Casting Rib Design. General Design Guidelines . Close dimensional tolerance; Complex shape, fine detail, intricate core sections and thin walls are possible; Ferrous and non-ferrous metals may be cast "As-Cast" finish (64 - 125 RMS) Process of Investment Casting 1. Pattern Making: • Manufacture Wax Pattern • Master Die desired • Allowances (Wax ,Ceramic Coating and Metal shrikange) added into Master Die Fig. 1 Wax Injection 10. 2. Assembly • Several Wax Pattern Combine for a Single Casting • Wax Bar ( Central Sprue) • Pouring Cup • Wax pattern Tree Fig. 2. Assembly 11. 3. 4. Design Considerations in Casting 1. Design the part so that the shape is cast easily. 2. Select a casting process and material suitable for the part, size, mechanical properties, etc. 3. Locate the parting line of the mold in the part. 4. The design of a successful casting requires an integrated approach that considers both functional and process requirements simultaneously. This article discusses the basic design considerations of the part and the entire casting process. Basic part design: 1. Avoid using sharp corners and angles as they act as stress raisers and may Below are the main advantages of the investment casting process: Allows for the casting of highly complex, extremely accurate parts with good surface finish right out of the mold Can cast very thin (~0.015 in) sections with incredibly low tolerances (~0.003 in) Allows for the use of almost any metal capable of casting (aluminum, bronze, iron, etc.) Investment casting is a manufacturing process in which a wax pattern is coated with a refractory ceramic material. Once the ceramic coating material is dry and hardened, the wax is melted out and leaves an internal cavity the shape of the final product's geometry. Molten metal is poured into the cavity where the wax pattern was. Richard, CT, & Kwok, T. "Rapid Investment Casting: Design and Manufacturing Technologies." Proceedings of the ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 39th Computers and Information in Engineering Conference. Anaheim, California, USA. August 18-21, 2019. June 15, 2021. Inconel investment castings Inconel investment castings are made by vacuum induction melting (VIM) bar stock, followed by hot isostatic pressing (HIP), and then subjected to an age-hardening process. Inconel alloys have outstanding welding qualities, making them ideal for repairing casting faults or making repairs in-service. One goal of die casting should be to make a design that creates uniform wall thickness all around the casting. You may not be able to create 100 percent uniformity, but you should be able to significantly minimize wall thickness variations in your die casting. Different wall thicknesses can result in different rates of cooling along the casting High pressure die casting is a fast, repeatable process that delivers quality metal components, every time—but only if your component is designed properly. There are many factors that go into a successful design for high-volume manufacturing and our team of engineers helps thousands of customers each year successfully launch new projects. A DEFINITIVE GUIDE TO DESIGN FOR MANUFACTURING SUCCESS 6 Fillet Radius Sharp corners, edges and rapid changes in cross section should be avoided in cast