| Machining Info | Imported T Brand | JAT |
| Machine Tool | Horizontal CNC Lathe | |
| Workpiece Material | 55# Steel | |
| Material Hardness | HB220-240 | |
| Workpiece Name | Wheel Hub Unit | |
| Machining Type | Interrupted Rough Turning | |
| Tool Holder Model | MWLNR2525 M08 | |
| Insert Model | WNMG080412-*M T**25 | WNMG080412-BN JT5425 |
| Cutting Parameters | ||
| Vc (m/min) | 180–300 | 180–300 |
| f (mm/rev) | 0.2–0.3 | 0.2–0.3 |
| ap (mm) | 2 | 2 |
| Cooling Method | External Emulsion Coolant | External Emulsion Coolant |
| Test Results | ||
| Parts per Edge | 70–75 | 70–75 |
| Cutting Time (min) | ||
| VB (mm) | 0.31 | 0.32 |
In this comparative test involving the interrupted rough machining of 55# steel (HB 220–240) hub units, the JAT WNMG080412-BN JT5425 insert demonstrated performance essentially on par with the imported Company T WNMG080412-*M T**25 insert under identical cutting parameters and cooling conditions:
1. Number of workpieces machined per cutting edge: 70–75 pieces for both;
2. Flank wear (VB value): 0.31 mm for Company T and 0.32 mm for JAT—a negligible difference;
3. Cutting parameter ranges: Identical, allowing for direct interchangeability without modifying machine tool programs.
**Commercial Conclusion**: This JAT insert serves as a cost-effective alternative to the imported Company T insert, enabling customers to reduce tooling procurement costs without compromising tool life or altering existing machining processes.
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