Faucet alumina ceramic parts double-sided grinding
Double-sided grinding of alumina ceramic parts for faucets
Workpiece dimensions: Thickness 7.4mm
Workpiece material: Alumina ceramic
Processing equipment: YH2M8470 high-speed double-sided precision grinding machine
Parallelism after processing: 0.0009mm-0.0015mm
Alumina ceramics, with their high hardness, high wear resistance, excellent insulation, high temperature resistance, and chemical stability, are widely used in electronics, semiconductors, machinery, chemicals, medical and other fields. In these applications, the dimensional accuracy, parallelism, flatness, and surface finish of ceramic parts often have very high requirements. Double-sided grinding, as a fine machining process, has significant advantages when processing alumina ceramic parts:
1. Extremely high parallelism and flatness:
Core advantage: This is the most prominent advantage of double-sided grinding. The workpiece is clamped between two rotating grinding wheels (usually one fixed, one floating, or both adjustable), simultaneously processing two opposite surfaces.
Eliminate cumulative errors: Single-sided grinding requires first processing one side, then turning over to process the other side. The two clamping and processing processes will introduce clamping errors, positioning errors, and the accumulation of errors from the machine tool itself, making it difficult to ensure the absolute parallelism of the two surfaces and the overall flatness.
Simultaneous processing: Double-sided grinding processes both surfaces simultaneously in a single clamping. The relative movement between the upper and lower grinding wheels directly determines the parallelism of the two surfaces after processing. High-precision equipment can easily achieve sub-micron parallelism and flatness (e.g., <1μm).
2. Excellent surface finish and consistency:
Uniform grinding: During double-sided grinding, the workpiece floats freely or moves under control in the fixture, and the grinding pressure is evenly distributed on the two surfaces. With a suitable grinding fluid (usually water-based or oil-based grinding slurry containing diamond, silicon carbide, or alumina abrasives), a very uniform and consistent surface roughness (Ra value can be achieved at the nanometer level) can be obtained.
Reduce defects: Compared with the edge chipping and inconsistent scratches that may occur in single-sided grinding, the double-sided grinding process is smoother and easier to obtain a high-quality, damage-free surface.
3. Improve processing efficiency:
Simultaneous double-sided processing: Fine processing of two surfaces can be completed in one processing stroke, significantly shortening the processing time, and the efficiency improvement is particularly significant in mass production.
Reduce the number of processes and clamping: Eliminates the steps of turning over, secondary clamping, and alignment required for single-sided grinding, simplifying the process flow and reducing the auxiliary time and potential errors caused by multiple clamping.
4. Reduce workpiece deformation and stress:
Symmetrical force: During double-sided grinding, the workpiece is subjected to relatively directional forces from the upper and lower grinding wheels. This symmetrical force helps to offset some of the processing stress and reduce the bending deformation of thin ceramic parts caused by uneven single-sided force.
Smaller processing allowance: Because of good control of parallelism and flatness, double-sided grinding can usually achieve the final precision requirements with a smaller processing allowance, further reducing the stress caused by material removal.
5. Good dimensional control:
Precise thickness control: By precisely controlling the distance between the upper and lower grinding wheels or the grinding time, the final thickness dimensional tolerance of the workpiece can be very precisely controlled (usually up to ±0.001mm or higher accuracy).
High batch consistency: The equipment has a high degree of automation, and the process parameters are stable, which can ensure the high consistency of the dimensions and geometric accuracy between workpieces in the same batch or even different batches.
6. Suitable for high-precision and thin-slice workpieces:
For precision alumina ceramic parts that require strict control of parallelism, flatness, thickness tolerance, and surface quality (such as semiconductor packaging substrates, ceramic sealing rings, precision bearings, optical platforms, sensor substrates, etc.), double-sided grinding is almost the preferred or necessary process.
Especially suitable for processing thin ceramic parts that are prone to deformation.
In summary, the core advantages of double-sided grinding of alumina ceramic parts lie in its ability to achieve ultra-high precision processing of two surfaces with a single clamping (especially parallelism and flatness) with high efficiency, obtaining extremely uniform and consistent surface quality and precisely controllable thickness dimensions. These advantages make it one of the key processes for manufacturing high-precision, high-performance alumina ceramic components. Of course, double-sided grinding equipment is usually more expensive and complex than single-sided grinding equipment, but in scenarios with extremely high requirements for precision and efficiency, its overall benefits are very prominent.
