可钻式套管PDC钻头加工制造方法
By employing additive manufacturing and multiple heat treatment processes, the problems of insufficient vibration reduction performance and difficulty in processing complex topological hollow structures in traditional drillable casing PDC drill bits have been solved, enabling efficient manufacturing and stable use of drill bits, and improving the safety of drilling operations and the effectiveness of engineering applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CANGZHOU GREAT DRILL
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing traditional solid steel drillable casing PDC drill bits suffer from insufficient vibration reduction performance, poor subsequent drillability, and difficulty in processing complex topological hollow structures. Furthermore, traditional manufacturing processes cannot achieve multi-regional gradient structure design for drill bits, resulting in low material utilization and long manufacturing cycles.
The drill bit blank is made using additive manufacturing technology, and then subjected to stress-relief annealing and hot isostatic pressing. It is then subjected to precision machining, quenching and low-temperature tempering heat treatment, combined with surface spraying hardening treatment and press-fitting of PDC composite sheet. Finally, grinding and diameter maintenance and welding strength testing are performed.
It achieves integrated molding of complex hollow structures, improves the freedom of drill bit structure design and overall performance, improves vibration reduction performance, extends the service life of drill bits, reduces construction costs and time, and ensures the stability and reliability of drill bits.
Smart Images
Figure CN122401006A_ABST