How Ceramic Polishing Is A Process To Smooth Out Sharp Edges, Bends, And Machine Lines On Workpieces?

 

Ceramic polishing is a process to smooth out sharp edges, bends, and machine lines on workpieces. It requires time-consuming processing but also creates beautiful workpieces with premium quality. Various factors such as the weight of ceramic media, the shape, and the abrasiveness of the abrasives determine the performance of the ceramic polishing system.

Speed Of Polishing May Vary Depending

There are various types of Ceramic Polishing machines, including rotary and reciprocal polishers. The speed of polishing may vary depending on the manufacturer recommendations. However, the maximum effective speed is between 10,000 and 12,000 RPM. Higher speeds cause excess heat and lower the lifetime of the polisher. This is why it is highly recommended to use an IR curing lamp for ceramic materials.

A study conducted by Chang et al investigated the effect of finishing diamond grit on porcelain cracking. Porcelain was polished with three different grits of finishing diamonds. They theorized that the 46-um grit diamond caused thermal shock.

Higher Surface Roughness In Control

In addition, Chang et al studied the effects of four different polishing techniques on CAD/CAM resin-ceramics. Four different types of CAD/CAM ceramic blocks were used in the experiment. Each was cut in a thickness of one millimeter. After the surface was roughened, surface roughness was measured using profilometers. These results were analyzed by a T-test.

To evaluate the effectiveness of the polishing systems, the results were compared on a single specimen surface per group. For each ceramic material, the effects of each polishing technique were evaluated in comparison to the control.

Achieve Better Finish For Lithium Disilicate Ceramics

To measure the abrasiveness of the Ceramic Polishing Dubai materials, the roughness of the surface was measured after each of the polishing processes. The tensio-active agent (organopolysiloxane polymer) is an ingredient in high-efficiency ceramic polishing fluid. Generally, it accounts for 0.001% to 5% of the total mass of polishing fluid.

In order to analyze the influence of the polishing technique on the surface finish, the control group was divided into four subgroups. Each subgroup consisted of eight specimens. Using these groups, a comparison was made between the four polishing techniques and the nonpolished control group.

The abrasiveness of the ceramic surface was analyzed by the profilometers. A higher surface roughness was observed in the control group, while the results of the other three groups were less rough. This was due to the uneven removal of material. Several factors such as the preferred slip planes, grain boundaries, and the localized properties of the material all affect the rate of material removal.

Despite the fact that the DE values of the four polished and nonpolished groups were comparable, the control group had higher DEs than the other groups. Thus, this study concluded that the use of a polyurethane-bound fine polisher helped in achieving a better finish.

Conclusion:

In addition, the study found that lithium disilicate ceramics required two steps to be polished, while polycrystalline and feldspathic ceramics were polished in one step. Moreover, the speed of polishing and the abrasiveness of abrasives affected the results. Polycrystalline ceramics were polished faster than feldspathic ceramics, which indicates that the differences in grain orientation and the shape of the ceramic grain play a critical role in determining the rate of material removal.