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Precision grinding with superabrasive grinding discs?

2023-11-01 14:05:46Reading volume: 131

The main features of superabrasive grinding wheels are:

1. One of the main advantages of superabrasive grinding discs is their versatility. Due to their ability to process a wide range of hard and brittle materials, these discs have become essential in industries such as aerospace, automotive, construction and electronics. Materials such as hardened steel, ceramics, glass and even natural or synthetic diamonds can be effectively machined using these grinding tools.

2. In addition to their versatility, superabrasive grinding discs offer powerful grinding capabilities and excellent wear resistance. The durability of these grinding discs allows them to maintain grinding performance over time, reducing the need for frequent dressing. This not only saves time and effort but also increases the productivity and cost-effectiveness of industrial processes. Maintenance is another area where superabrasive grinding discs benefit. These wheels are easy to control during processing due to their ability to maintain particle size. This allows for precise adjustments to the grinding process, ensuring consistency and accuracy in the final product. In addition, the convenience of automation further increases the efficiency of materials processing, allowing industries to streamline operations and achieve higher levels of productivity.

3. An important aspect of using superabrasive grinding discs is the minimal grinding forces they exert and their lower grinding temperatures. This combination reduces internal stress within the processed material. Unlike traditional grinding methods, the use of superabrasive grinding discs significantly reduces the occurrence of defects such as burns and cracks. This in turn improves the quality of the machined surface and guarantees an impeccable finished product. Superabrasive grinding discs have proven to be highly efficient compared to other materials. For example, when grinding carbide materials widely used in the manufacturing industry, the grinding force exerted by a diamond grinding discs is only a fraction (1/4 to 1/5) of the grinding force required when using green silicon carbide wheels. Significant reductions in grinding forces translate into increased efficiency, reduced wheel wear, and ultimately lower operating costs for industries that use these discs.

4. The metal removal rates of diamond grinding discs exceed those of cubic boron nitride (CBN) wheels when processing carbide and non-metallic hard and brittle materials. With their exceptional ability to grind the toughest materials, diamond grinding discs have become an indispensable asset in industries such as aerospace, automotive and manufacturing. On the other hand, CBN grinding wheels perform better than diamond grinding discs when working with heat-resistant steels, titanium alloys, mold steels, and similar materials.  CBN grinding wheels exhibit significantly higher metal removal rates in these situations, making them the first choice to ensure efficiency and productivity.

5. Despite their relatively high cost compared to traditional abrasive grinding wheels, both diamond grinding discs have significantly long service life and high machining efficiency, ultimately resulting in lower overall machining costs. The extended service life of these superabrasive grinding discs minimizes the need for frequent grinding wheel replacements, thereby reducing downtime and associated costs in industrial processes. In addition, the excellent wear resistance of diamond grinding discs ensures that they can withstand the rigors of material processing over long periods of time. This durability enables industries to achieve consistent, efficient grinding operations, increasing productivity levels and reducing expenses in the long run. The minimal maintenance requirements of superabrasive grinding wheels further enhance their cost-effectiveness. These wheels maintain particle size, providing maximum control and precision during material processing. This effective control reduces waste and increases accuracy, resulting in a higher quality finished product.

Superabrasive grinding wheel grinding dosage selection:

1. For non-metal bond diamond grinding discs, experts generally recommend a grinding speed range of 12 to 30 meters per second (m/s). This range ensures a balance between material removal rate, surface roughness and wheel life. However, when using cubic boron nitride (CBN) grinding wheels, the speed range can be significantly higher, between 45 and 60 m/s.  The increased speed capability of CBN grinding wheels is mainly attributed to the excellent thermal stability of CBN abrasives. By choosing the optimal grinding speed, manufacturers can achieve higher material removal rates, resulting in shorter machining times. Additionally, proper speed prevents excessive heat generation, which could damage the workpiece or shorten the life of the grinding wheel.

2. The next key dosage consideration is grind depth, which refers to the amount of material removed during grinding. Generally speaking, the recommended grinding depth is in the range of 0.001 to 0.01 millimeters (mm). However, the specific grinding method, abrasive grain size, bond and cooling conditions must be considered when determining the ideal depth. These factors influence the required surface finish, processing requirements, and characteristics of the material being processed.

3. Another factor in dose selection is workpiece speed. Typically, a range of 10 to 20 meters per minute (m/min) is recommended for best results. Workpiece speed affects the overall productivity of the grinding process and must be carefully adjusted to the specific requirements of the material being machined and the application.

4. Finally, longitudinal feed speed plays a crucial role in dose selection. Longitudinal feed speed refers to the speed at which the workpiece is fed into the grinding wheel during grinding. For most applications, a range of 0.45 to 1.5 m/min is considered optimal. 


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