Ceramic beads: The microstructure is composed of very fine ZrO2 (with a diameter generally between 1-2um) distributed in tile like patterns on the substrate, and SiO has excellent wear and impact resistance. On the other hand, it also ensures the strength and hardness of ceramic beads, thereby giving them excellent wear resistance and impact resistance. The coarse organizational structure not only reduces the strength and hardness of the projectile, but also decreases its toughness, which can lead to premature fracture and breakage of the projectile during use.
Ceramic beads are particularly suitable for surface treatment of complex metal and non-metal plastic structures, while also having the function of eliminating stress and improving the fatigue life of the workpiece surface. Recyclable, not easily broken, no dust, no metal pollution, clean and environmentally friendly, and no hidden dangers of silicosis. Compared with glass beads, ceramic pearl has a higher level of cleanliness and a lifespan increase of about 20-30 times.
The processing technology used by dedicated engineers and technicians, the raw materials are fired by electric melting method, and its unique internal crystal structure ensures its strong hardness and impact resistance. The ceramic spherical shape, smooth surface, and dust-free characteristics provide a prerequisite for a good working environment. At the same time, stable chemical inertness ensures that the processed workpiece will not be contaminated
1. size range:
B/Z20:0.600-0.850mm B/Z30:0.425-0.600mm
B/Z 40:0.250-0.425mm B/Z 60:0.150-0.300mm
B/Z 80:0.125-0.212mm B/Z 100: 0.106-0.180mm
B/Z 120:0.063-0.125mm B/Z 150: 0.053-0.106mm
B/Z 170:0.045-0.090mm B/Z 205:0.000-0.063mm
Special sizes like B125, B170PLUS, etc can be customized.
2. Physical Index
|
Physical Index |
|
|
True density |
3.85 g/cm3 |
|
Bulk density |
2.3g/cm3 |
|
Vicker hardness |
700 HV |
3, Usage environment: external conditions test stability
The dimensional accuracy stability of ceramic beads is not absolute and may still be affected in extreme environments
1. Temperature fluctuations
Although ceramics have a low coefficient of thermal expansion, extreme temperature differences (such as -200 ℃ to 500 ℃) can still lead to small size changes. For example, ceramic beads in the aerospace field need to withstand sudden cooling and heating, and ultra-low expansion coefficient materials (such as zirconia toughened alumina) need to be selected.
2. Long term load
Under high loads (such as large mechanical bearings), ceramic beads may experience small dimensional deviations due to "accumulated elastic deformation", but much smaller than the plastic deformation of metals. For example, under rated load, the size change of silicon nitride ceramic beads after long-term use is usually less than 0.1 μ m, which meets the requirements of precision equipment.
3. Shock and vibration
Ceramics have high brittleness, and severe impacts may cause local fragmentation (rather than uniform size changes), but their dimensional stability is not affected under normal vibration conditions.
4, Stability performance in different scenarios
-In the field of precision machinery/bearings, silicon nitride and zirconia toughened ceramic beads have been optimized to achieve dimensional accuracy stability of up to 0.1 μ m/year, meeting the long-term high-precision operation needs of high-speed machine tools, aviation engines, and other applications.
-Grinding/Chemical Industry: zirconia ceramic beads, due to their chemical stability and wear resistance, have a size decay rate of less than 0.5% per year (much lower than the 5% -10% of steel beads) during long-term grinding or medium contact.
-In the field of jewelry/decoration, ordinary ceramic beads (such as stoneware and celadon) have low requirements for dimensional stability, and even minor changes (such as moisture expansion<1%) do not affect their use.
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