Homework SourseBefore modern high temperature were available the melted met
Before modern high temperature were available, the melted metal was too cool to fill the mold, what device could be used to determine the additional heating required? How does it work and what does it measure?
Before modern high temperature were available, the melted metal was too cool to fill the mold, what device could be used to determine the additional heating required? How does it work and what does it measure?
Before modern high temperature were available, the melted metal was too cool to fill the mold, what device could be used to determine the additional heating required? How does it work and what does it measure?
Solution
If the superheat is too low, ( difference between melting point and pouring temperature), then the liquid metal may not flow properly and start solidifying befor efilling he mold.
Before pouring, a device called SPIRAL MOLD TEST is used. It\' s described in Active Standard ASTM D3123
A figure is attached, The length to which the metsl reaches is the relative fluidity:
This is also used in the plastics molding industry. Notches arfe marked on the spiral and the \"FLUIDITY\" is measured and estiamted by the number of notches covered before solidifciation stops the flow.
Hope this helps. You may have to add more references.
