一种大直径聚晶金刚石复合片的加工方法
By pre-processing and correcting the large-diameter polycrystalline diamond composite sheet blanks to release internal stress, and combining this with laser processing and polishing of the PCD layer, the problem of low precision in existing technologies has been solved, and stable production of high-grade, high-precision polycrystalline diamond composite sheets has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHENGZHOU HUAYUAN POOLING SYST CO LTD
- Filing Date
- 2022-11-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot reliably produce high-grade, high-precision large-diameter polycrystalline diamond composite sheets. The PCD layer's precision decreases due to changes in internal stress after the alloy layer is thinned.
The PCD layer is pre-treated to make the thickness of the middle part of the PCD layer greater than that of the edge part. The alloy layer is thinned and the blank is waited for to arch towards the PCD layer before the PCD layer is processed to make the PCD layer surface flat. Internal stress is released through correction treatment and heat treatment, and finally polishing is performed to improve the accuracy.
It improves the precision and quality of large-diameter polycrystalline diamond composite sheets, simplifies the processing technology, increases processing efficiency, and ensures the thickness uniformity and surface smoothness of the PCD layer.
Smart Images
Figure CN115889781B_ABST