Material: Ordinary austenitic stainless steels (e.g., 304), when used in the temperature range of 450–850°C (the sensitization temperature range), can cause carbon to combine with chromium at grain boundaries, leading to chromium depletion and subsequent susceptibility to intergranular corrosion. In 321 stainless steel, titanium is added because it has a stronger affinity for carbon than chromium does. Titanium preferentially forms titanium carbides, effectively inhibiting the formation of chromium-depleted zones at grain boundaries and greatly enhancing resistance to intergranular corrosion. Studies have also confirmed that 321 stainless steel does not require additional stabilization heat treatment after welding, and its welded joints maintain good intergranular corrosion resistance, outperforming titanium-free 310 stainless steel.

Thread Accuracy Assurance: The threads are produced using a CNC machining center milling process. Finished products are inspected with go/no-go gauges to ensure thread quality.

Anti-deformation Process: Stainless steel components are prone to deformation during machining. We adopt a cutting process combining stress relief and coolant-assisted cold cutting, ensuring that flatness after machining is controlled within 0.15 mm per meter.

Custom Cutting Tools: Stainless steel tends to cause rapid tool wear during machining. Based on the compositional characteristics of this material, we have developed custom cutting inserts specifically for machining it. This increases cutting efficiency by 60–80% and reduces tooling costs by 50–60%.

Typical Customers: Leading equipment companies both domestically and internationally.

CMM Inspection: After the product is machined, laser inspection is carried out and an inspection report is issued.