d84e2f0c0ef9a3685669f106e94818b9
4 month ago
Product details
Why Resin-Bonded Diamond Grinding Wheels excel at Grinding Alumina Ceramics
Alumina (Al₂O₃) ceramic is a cornerstone of modern industry. Its exceptional hardness, wear resistance, electrical insulation, and thermal stability make it an ideal choice for critical components in aerospace, medical implants, semiconductors, and electronics.
However, these very properties make aluminum oxide extremely challenging to machine. Achieving the tight tolerances, fine surface finishes, and complex geometries required for these applications requires suitable grinding tools. For precision grinding of aluminum oxide ceramics, metal-bonded diamond grinding wheels are often the undisputed first choice.
Why Diamond? Why Resin Bond?
1. Diamond: The Only Choice for Hardness
Alumina ceramic has a Mohs hardness of 9. Only diamond abrasives (Mohs hardness of 10) can cut and wear it efficiently and reliably. Other abrasives, such as silicon carbide, wear out almost instantly, making them inefficient and uneconomical.
2. Advantages of Resin Bonds: Precise and Fine Machining
"Bond" refers to the matrix that holds the diamond grains. While metal and vitrified bonds each have their advantages, resin bonds offer a unique set of advantages that make them well-suited for precision machining of brittle materials:
Elasticity and Damping: The phenolic resin matrix exhibits a slight elasticity. This provides damping during the grinding process, reducing the risk of microcracks and chipping in precision ceramic workpieces.
Lower Cutting Temperature: Resin bonds typically generate less heat than metal bonds. This is crucial for preventing thermal shock on aluminum oxide, which can cause subsurface damage.
Excellent Surface Finish: The low bond hardness, combined with its ability to hold fine-grained diamonds, enables resin-bonded grinding wheels to produce extremely low surface roughness (Ra). This is crucial for components requiring perfectly sealed surfaces or minimal friction.
Formability: Resin bonds are ideal for manufacturing complex-shaped grinding wheels. They are easily formed and dressed, enabling high-precision grinding of complex shapes and forms.
Key Considerations for Optimal Performance
Simply selecting a resin-bonded diamond grinding wheel is not enough. To realize its full potential, you must optimize the process:
Grit Size: Select based on the desired finish and material removal rate.
Coarse grit (e.g., 80-150): For fast stock removal and roughing.
Medium grit (e.g., 180-400): For general-purpose grinding.
Fine grit (e.g., 500-2000+): For final finishing, polishing, and achieving a mirror finish.
Coolant selection is crucial: Always use high-quality, ample-flow coolant (typically a water-soluble synthetic or semi-synthetic coolant). This serves three important purposes:
Heat dissipation: Prevents thermal damage to the ceramic and grinding wheel.
Lubrication: Reduces grinding forces and improves surface integrity.
Cleaning: Flushes away grinding swarf (chips) to prevent wheel loading.
Dressing and Reshaping: Over time, grinding wheels become loaded with material or wear out. Regular dressing with silicon carbide or diamond rods is necessary to expose fresh, sharp diamond grains and maintain wheel profile and cutting efficiency.
Machine Rigidity: Precision grinding requires stable, high-precision machines. Any vibration is transmitted to the part, negatively affecting surface finish and dimensional accuracy.
The Shining Point of Resin Diamond Grinding Wheels
Medical Components: Grinding alumina femoral heads, dental implants, and surgical tool components.
Semiconductor Substrates: Thinning and finishing ceramic wafer carriers and substrates.
Seal Components: Producing perfectly flat and smooth surfaces on mechanical seals.
Advanced Electronics: Precision machining of ceramic insulators, substrates, and sensor components.
Similar Video Recommendation
<
>
Bossgoovideo.com Contact Now
If you are interested in the product, contact Bossgoovideo.com for more information
- *To:
- Henan Jinlun Superhard Material Co., Ltd
- *Message:
-
Submit
Disclaimer :
The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from
transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation.
If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.
Suppliers
Henan Jinlun Superhard Material Co., Ltd
Audited supplier
4 year
Main Product:
Grinding Wheels ,
Diamond and CBN Wheels,
Diamond Blade,
Cut Off Wheels,
Dressing Tools,
Sharpening Tools