At Apex Engineering, we offer the QPQ (Quench–Polish–Quench) process, also known as the SALT BATH Nitrocarburizing + Polishing + Post Oxidation process. QPQ is a premium duplex surface treatment designed to significantly improve wear resistance, corrosion resistance, fatigue strength, and sliding performance while producing an attractive black finish.
| Key Features | Applications |
|---|---|
| Increased corrosion resistance | Gears |
| Reduced friction and wear | Shafts |
| Oil-retaining magnetite layer | Fasteners |
| Premium matte black finish | Hydraulic components |
| Improved component life | Pneumatic components |
| Dies and moulds | |
| Automotive components | |
| Industrial machine parts |