等离子切割

Plasma Cutting

等离子切割使用高温等离子弧将金属熔化并吹离切缝。该方法能在较厚材料上获得快速、干净的切口，但高温会影响局部硬度。建议使用压缩空气或混合气体冷却切割区，以减少热影响区的硬度损失。对于厚度超过30 mm的型材，应降低切割速度以避免变形或开裂。

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.

火焰切割

Flame Cutting

火焰切割是一种利用燃气和氧气混合燃烧产生高温火焰的传统切割方式。该方法适用于厚钢板，但切割过程中热量集中，会导致局部回火或硬度下降。在厚度较大或温度较低（低于+5°C）的情况下，应先进行预热，以避免因热冲击造成开裂。

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.

激光切割

Laser Cutting

激光切割以高能激光束熔化或汽化金属，具有极高的精度和光洁的切割面。该方法的热影响区小，可最大限度地保持材料硬度。建议根据材料厚度调整激光功率和切割速度，并使用辅助气体（如氮气或氧气）提高切割质量和冷却效果。

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.

### 冷切割

### Cold Cutting

水切割

Waterjet Cutting

水切割通过高压水流（可添加磨料）进行冷切割，不会产生热影响区，从而完全避免硬度损失。适用于精度要求高或热敏感材料的切割。应定期检查喷嘴磨损情况，并保持稳定的水压与磨料流量以确保切割质量。

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.

带锯切割

Band Saw Cutting

带锯切割使用连续锯带进行机械切割，无热变形且精度高。需根据被切钢材的硬度选择合适的锯条，并使用足量的润滑液（油+水或油雾系统）以减少磨损。切割速度和进给率应根据材料硬度调整，以避免刀齿崩裂。

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.