The first part dropped. Beautiful. The second, third... then the fourth.
When the plasma arc superheats a localized area (often exceeding 30,000°F), the metal expands rapidly. As the cut progresses and the torch moves away, that area cools and contracts. If the geometry of the part (or the hold-down method) prevents this contraction, the steel literally pulls itself apart. sheetcam hot crack
, plays a critical role in determining the thermal cycle of the material. This paper examines how SheetCam parameters—specifically lead-ins, cutting speeds, and path optimization—can be adjusted to reduce the thermal stresses that lead to hot cracking. 1. Introduction to Hot Cracking The first part dropped
Understanding and Preventing "Hot Cracking" in SheetCam: A Guide for CNC Plasma Cutting the steel literally pulls itself apart.