Plasma Cutting

Plasma cutting uses a high-temperature plasma arc to melt and blow away the metal. It provides fast and clean cuts on thick materials, but the intense heat can affect local hardness. Compressed air or mixed gases should be used to cool the cutting area to reduce hardness loss. For profiles thicker than 30 mm, reduce cutting speed to avoid deformation or cracking.

Flame Cutting

Flame cutting is a traditional method that uses a mixture of fuel gas and oxygen to produce a high-temperature flame. It is suitable for thick steel plates, but concentrated heat can cause tempering or hardness reduction in localized areas. For thick sections or low ambient temperatures (below +5°C), preheating is recommended to avoid cracking caused by thermal shock.

Laser Cutting

Laser cutting melts or vaporizes metal using a high-energy laser beam, achieving excellent precision and a smooth finish. The heat-affected zone is minimal, preserving material hardness. Laser power and cutting speed should be adjusted according to material thickness, and auxiliary gases (such as nitrogen or oxygen) should be used to improve cut quality and cooling.

### Cold Cutting

Waterjet Cutting

Waterjet cutting uses a high-pressure water stream, sometimes with added abrasives, for cold cutting that eliminates thermal effects and hardness loss. It is ideal for materials requiring high precision or those sensitive to heat. Regularly check nozzle wear and maintain stable pressure and abrasive flow for consistent quality.

Band Saw Cutting

Band saw cutting uses a continuous toothed blade to mechanically cut steel with high precision and no thermal alteration. Choose blades suitable for the steel hardness and lubricate with ample emulsified fluid (oil + water) or mist systems (air + oil). Adjust cutting speed and feed rate based on material hardness to prevent tooth breakage.