Casting variables needed for magmasoft modeling
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SF&E has poured over 50,000 castings of a particular stainless steel (ASTM A351, grade CF8M). Shrinkage defects internal and on a machined surface This rate of solidification will affect casting soundness and in turn, shrinkage within the casting. Exothermic introduced on the risers and sprue after pouring hold in the heat to assist in the solidification process. Sand controls and initiates the proper solidification front through the casting. Different sand results in different cooling rates, so it’s imperative to understand the process. Processing Tools and Supplies – Having the proper riser sleeves or the correct type of sand is essential.Processing Parameters – Items such as a proper melting temperature and the ability to monitor, measure, and log results help define casting integrity.This is a key element in maintaining control of the solidification process to create high integrity castings. We have a dedicated engineer for solid modeling and solidification analysis. At SF&E, we use MAGMASOFT solidification modeling for this task.
CASTING VARIABLES NEEDED FOR MAGMASOFT MODELING HOW TO
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Understanding and controlling the process allows SF&E to continue to manufacture high integrity castings with above-average industry lead times. Stainless Foundry & Engineering (SF&E) evaluates all casting surfaces to the MSS SP-55 or ASTM A802 quality standards, both of which allow for some levels of acceptable shrinkage and gas. Liquid penetrant testing displaying gas (left), Radiographic testing displaying shrinkage (right) The rough form will always have minor levels of porosity. A casting is an economic preform, a rough form based on the specifications of the drawing and purchase order. Identifying and eliminating the source can be a challenge.įirst, it is important to note that casting shrinkage and gas defects are part of foundry cast materials. Both are caused by very different sources. It is generally due to shrinkage or gas as the casting cools. When castings have openings, cavities, porous sections, and similar defects on the internal or external surface, it is often called porosity.