Sheetcam Hot Crack Verified Site

Do not cut parts sequentially if they sit right next to each other. Use SheetCam's nesting features to skip around the sheet, allowing completed zones time to cool down.

Understanding why these fractures happen allows you to adjust your SheetCam strategies effectively. 1. Excessive Dwell Time (Pierce Delay)

Cracks often start at the entry or exit point of a cut because that is where the heat dwells the longest. sheetcam hot crack

Here is a deep dive into why this happens and how you can use SheetCam’s powerful toolset to prevent it. What is Hot Cracking?

Implement a short lead-out (0.05 to 0.1 inches) that guides the torch away from the finished edge before the arc extinguishes. This moves the final cooling crater into the scrap material. Fine-Tune Pierce Delay and Pierce Height Do not cut parts sequentially if they sit

The easiest way to prevent hot cracking is to optimize your toolpath logic. By altering how the torch approaches, travels through, and exits the metal, you can control the thermal footprint. Optimize Lead-Ins and Lead-Outs

Slowing cooling speeds and keeping the material in a brittle temperature range for too long. Impurities: What is Hot Cracking

If you are preparing parts for subsequent welding, general metallurgical practices should be combined with your SheetCam setup: SheetCam - Layers and the Contour Tool

Both materials have high thermal expansion coefficients, meaning they expand and contract significantly during the cut cycle, making lead-outs non-negotiable. Gas Selection and Pressure

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