Definition: Ramp (noun) refers to the amount of heat gained or lost over one hour's time within the kiln while it is in use. For example, if a kiln was at 200°F and steadily gained temperature for two hours, at which time it had reached 600°F, it would have a ramp of 200°F / hour (derived from the net change in temperature, in this example 400°F, divided by the length of time, in this case two hours).
Also Known As: firing ramp, rate, firing rate
Examples:
After the warm up, the first stage of a bisque firing should have a ramp of about 80 to 100°F / hour until the kiln has reached an internal temperature of 220°F. (noun)