A wafer is a thin silicon wafer with a thickness of about 1 mm. Due to the very high requirements of the manufacturing process, the surface of the wafer has a very high flatness. The specific application of the wafer determines which crystal growth method needs to be adopted. Taking the Czochralski method as an example, after the polysilicon is melted, a pencil-sized seed crystal is immersed in the molten silicon, and then the seed crystal is slowly rotated and slowly pulled upward. So a very heavy monocrystalline silicon ingot was pulled out. In addition, targeted electrical properties of the wafer can be achieved by adding trace amounts of high-purity dopants to the molten silicon. Ingots are doped according to customer specifications, then sliced and polished. After several steps, customers receive wafers specially packaged to their specific specifications.

In terms of binder, the resin diamond abrasive belt mainly uses phenolic resin plus a small amount of metal powder as the binder, while the electroplated diamond abrasive belt is a kind of sand that deposits nickel-drill alloy on the surface of the metal substrate and fixes the diamond abrasive by electrodeposition. With production process.

In terms of processing efficiency, since the electroplated diamond abrasive belt uses higher-grade abrasives and has only one layer of abrasive, it has its own advantages in heat dissipation and other aspects, so the electroplated diamond abrasive belt has higher processing efficiency.

When the hardness of the grinding wheel is selected properly, the diamond or CBN electroplated grinding wheel will automatically remove the blunt abrasive grains during the grinding process, exposing new sharp abrasive grains to continue grinding. If the selected grinding wheel is too soft, the abrasive grains will fall off prematurely before passivation, which will not only increase the consumption of the grinding wheel, but also cause the grinding wheel to lose its correct shape and affect the machining accuracy; if the selected grinding wheel is too hard, the abrasive grains will not fall off in time after passivation, which will cause The gap between the abrasives on the surface of the grinding wheel is blocked by grinding debris, resulting in increased grinding force, increased grinding heat, and increased grinding temperature, resulting in deformation or even burns of the workpiece, and increased surface roughness and reduced productivity.

Difficult-to-machine materials, complex workpiece shapes and frequent small-batch production place high demands on the tools used to process medical materials. The precision tools produced by Walter enjoy a high reputation in this field.
Medical materials, such as implant products and prosthetics, play an important role in successful surgical procedures, helping surgeons achieve optimal medical outcomes. Cutting tools for processing medical materials determine the quality of medical materials to a large extent. The use of cutting tools in the manufacture of medical materials is diverse and extensive. It can process relatively simple workpieces such as large-scale equipment (such as computerized tomography cameras), while the production of implanted products or workpieces used to repair the skull or treat fractures. more challenging.

Sapphire has high hardness and is a hard and brittle material at room temperature, which is difficult to process and has a low yield. Especially in the process of precision and ultra-precision processing, sapphire sheets often have cracks, scratches, edge breakage and other defects.

Many shapes, sizes and types of bearings exist including: ball bearings, roller bearings, needle bearings, and tapered roller bearings.

Ultra-precision grinding is a kind of feed movement to achieve a micro grinding of a finishing process.The surface before ultra-finish machining is generally precision turning and grinding.

If the fine grain size of dry grinding cannot be fed too much, it must be the high heat that causes the surface of the sand belt to turn yellow at high temperature, which will definitely affect the service life of the sand belt. The gap at the interface is allowed by normal technology, and the peeling is also caused by high temperature.

Diamond roller made of a large number of diamond particles embedded on the surface of a steel roller by electroplating or powder metallurgy. The diamond roller rotates at a certain speed and produces grinding and rolling effects on the surface of the high-speed rotating wheel, so that the grinding wheel can obtain a sharp working surface consistent with the profile of the roller. Dressing grinding wheel one-time forming, with high efficiency, high precision, durable characteristics, widely used in thread, gear, bearing, machine tools, automobiles, blades, cutting tools and so on.

Most bearings seen in daily life are ordinary bearings. However, high-end precision bearings applied in aero-engine, high-precision machine tool equipment, high-speed railway, instrumentation and other fields have unimaginable complexity in technology. The quality of a bearing is determined by its accuracy, performance in vibration, noise and noise, life and reliability, and high-speed performance. In the process of bearing production, the most critical links include forging, heat treatment, grinding, super finishing, rust prevention and so on.