The CVD polycrystalline diamond Blanks for Dressing produced by JCB contain no additives and are composed of pure diamond with a polycrystalline structure. They have no distinction between soft and hard surfaces and are less prone to breakage. They exhibit extremely high hardness, wear resistance, and thermal stability. Blanks of different grades have wear ratios ranging from 200,000 to 1,800,000, with stable performance. The dressed grinding wheels are sharp, resulting in high surface finish on the machined work-pieces. JCB's CVD polycrystalline diamond Blanks for Dressing can be used to manufacture single-point diamond tools, multi-point grinding wheel dressers, dressing rollers, form tools, and more. They serve as ideal replacements for natural diamond and single crystal diamond.
CVD polycrystalline diamond dressing tool blank produced by our company does not contain any additives, is a polycrystalline structure of pure diamond, there is no soft and hard surface, and is not easy to break, with high hardness, wear resistance and thermal stability and other characteristics, different grades of blank wear ratio between 200,000 to 1.8 million, stable performance, sharp dressed grinding wheel, high finish of the workpiece. The CVD polycrystalline diamond dressing tool blank produced by our company can be used to make single point diamond pen, multi-point wheel dresser, dressing roller, forming knife, etc., which is an ideal substitute for natural diamond and single crystal diamond.
| Material item | Natural diamond | CVD diamond |
| Hardness /(GP) | 100 | 70-100 |
| density/(g/cm3) | 3.515 | 2.8-3.5 |
| 熔点/°C | 4000 | approach4000 |
| Modulus of elasticity/Pa | 1.04X1012 | 1.04X1012 |
| Young's modulus/GPa | 1200 | 1050 |
| Thermal shock coefficient/(W/m) | 107 | 107 |
| Friction coefficient | 0.08-0.1 | 0.08-0.1 |
| Fracture toughness MPa.m1/2 | 约3.4 | 1-8 |
| Tensile strength b/Gpa | 约3.0 | 0.2-0.4 |
| Coefficient of thermal expansion/(X10-6/K) | 1.0(300K) | 1.0(300K) |
| 2.7(500K) | 2.7(500K) | |
| 4.4(1000K) | 4.4(1000K) |
| Product specification | Length L, (mm) | Width W, (mm) | Thickness T, (mm) |
| CVD L*W*04 | L | W | 0.4 |
| CVD L* W*06 | L | W | 0.6 |
| CVD L* W*08 | L | W | 0.8 |
| CVD L* W*10 | L | W | 1.0 |
| CVD L* W*15 | L | W | 1.5 |
| CVD L* W*20 | L | W | 2.0 |
We provide single-sided or double-sided polishing processing, and special shapes and sizes can be cut according to customer requirements.
