In industrial metal fabrication, fiber laser cutting systems use assist gases to clear molten material from the cut kerf. When processing stainless steel, technicians utilize high-pressure nitrogen rather than oxygen. While oxygen reacts exothermically with the metal to increase cutting speeds, it produces an oxidized, darkened perimeter that necessitates post-cut grinding before welding. Conversely, chemically inert nitrogen suppresses oxidation to deliver a clean, weld-ready edge, though it consumes substantially more electrical power and gas volume to achieve identical cutting depths.
Based on the provided information, which conclusion is most directly supported regarding assist gases in laser cutting?
- AUtilizing nitrogen assist gas allows laser cutting systems to operate at higher speeds than when using oxygen.
- Stainless steel processed with nitrogen assist gas eliminates the need for secondary surface preparation prior to welding.Cevap
- CHigh-pressure nitrogen creates an exothermic reaction that enhances the electrical efficiency of the cutting system.
- DOxygen assist gas causes severe structural cracking across the interior of the stainless steel workpiece.
Cevap
Stainless steel processed with nitrogen assist gas eliminates the need for secondary surface preparation prior to welding.
The passage contrasts the two gases by highlighting that oxygen produces an edge needing post-cut grinding before welding, whereas nitrogen leaves a clean, weld-ready edge. It is therefore directly supported that using nitrogen removes the necessity of secondary grinding preparation.
Adım Adım Çözüm
Anahtar Kavram
Distinguishing between direct, supported inferences and unsupported assumptions based strictly on passage evidence.
Tahmini Süre:1m 5s