Ceramics have size and surface accuracy requirements, but because of the large shrinkage rate of sintering, it is impossible to ensure the accuracy of the size of the ceramic body after sintering, so it needs to be reprocessed after sintering. Zirconia ceramic processing is carried out by the accumulation of microscopic deformation or removal of the material at the processing point.
With the processing amount (the size of the processing chips) and the non-uniformity of the material to be processed, the relationship between the internal defects of the material or the defects caused by processing is different, and the processing principle is also different.
Characteristics of zirconia ceramic processing:
(1), ceramics are hard and brittle materials: high hardness and high strength is an advantage of ceramic materials, but it has become a big problem in the subsequent processing of ceramic materials.
(2) Ceramic materials have low electrical conductivity and high chemical stability. Therefore, these characteristics of ceramic materials must be considered in the follow-up processing, generally can not use electrical machining or chemical etching ceramic finishing, according to the different processing energy can be summarized as follows:
Machining, chemical processing, photochemical processing, electrochemical processing and other processing methods.
The processing method of mechanical method is divided into abrasive processing and tool processing, which abrasive processing is divided into grinding, finishing, grinding, ultrasonic processing and other methods. According to different performance requirements, the processing methods of zirconia ceramics are different.
Post time: Sep-02-2023