Casting Technology • Engineering Study Notes PATTERN ALLOWANCES – NOTES Important allowances provided on a pattern to obtain the required final casting dimensions, shape and surface finish. Key Idea: Pattern is always made with some increments and decrements in dimension…
Heat source in the Gas welding (oxy fuel gas welding) is the flame produced by the combustion of a fuel ( Acetylene) and oxygen. Three different types of gas welding flames can be obtained by varying the oxygen–acetylene (or oxygen–fuel…
Pattern is the mirror image or replica of the component that has to be manufactured by casting. A pattern prepares the mould cavity for the casting process. Materials used for pattern making: The selection of pattern material depends on following…
Core is a body made of refractory material which is placed into a mould cavity to get the internal hollow cavity in casting. The cores are surrounded by molten metal and therefore subjected to severe thermal and mechanical conditions. …
