Why is plasma cutting particularly suited for fabricating thicker metals?

Why Is Plasma Cutting Particularly Suited for Fabricating Thicker Metals?

High Thermal Energy for Deep Penetration

Plasma arcs can reach temperatures above 20,000°C, allowing them to melt and expel metal rapidly, even in sections over 50 mm thick. This intense energy density ensures full material penetration, making plasma cutting ideal for heavy-duty applications in energy systems, construction equipment, and automotive frames.

Faster Cutting Speeds Compared to Oxy-Fuel

When cutting mild steel up to 38 mm thick, plasma systems can operate 2–3 times faster than oxy-fuel, significantly reducing fabrication time. For example, cutting 25 mm carbon steel at 500 mm/min with plasma is common, boosting productivity in high-volume manufacturing.

Cleaner Edge and Reduced Heat-Affected Zone (HAZ)

Plasma cutting produces a narrower kerf and smaller HAZ (typically <2 mm) than traditional flame cutting. This minimizes thermal distortion and the need for secondary machining, especially beneficial in structural parts where dimensional accuracy is critical.

Versatility Across Material Types

Unlike oxy-fuel, which is limited to carbon steel, plasma cutting can process stainless steel, aluminum, copper, and alloy steels, even at substantial thicknesses. This makes it essential for fabricators dealing with diverse material grades in industries like aerospace and telecommunication infrastructure.

Compatibility with CNC Automation

Plasma systems can be integrated with CNC cutting tables, enabling high-precision, repeatable cuts on large-format thick plates. Advanced height control ensures uniform standoff distance, which maintains cut quality and minimizes beveling—even across uneven or warped thick sheets.

Manufacturing Services for Thick Metal Plasma Cutting

Neway delivers plasma cutting services optimized for thick metals, offering ±0.1 mm accuracy, CNC automation, and material flexibility. With 20+ years of expertise, we support global projects in the industrial, construction, and energy sectors.