The difference in the division of marble platform grades the use and understanding of marble platforms, many people are not very clear about the division of flatness grades of marble platforms, only knowing the names such as grade 0, grade00, and grade 000, but they are not sure what the specific precision is. Below is a science popularization for everyone. First of all, the conventional grade of marble platforms can be divided into 4 grades: the precision from high to low is in turn grade 000, grade 00, grade 0, grade 1. (The precision of marble platforms referred to in this article is the actual precision of the platform in use rather than the precision of production and delivery, please be aware Grade 1 marble platform: Generally, it can be achieved with commonly used domestic granite recognized by the industry. Grade 0 marble platform: You can achieve grade0 precision by selecting domestic granite with uniform texture. Grade 00 marble platform: It is necessary to select specific granite raw materials, such as imported Indian stone, South stone, Southeast Asian stone, domestic Jinan green stone, etc. Generally, those who require such high precision are in the semiconductor industry or other fields that do precision testing. rade 000 marble platform: First, it is necessary to select Jinan green stone or imported Indian A stone to ensure the material base of the platform. Secondly, depends on the strength of the manufacturer. The grade 000 marble platform needs to be finely ground under the condition of constant temperature of about 22 degrees, and it only be achieved if the precision is stable for at least several days continuously. In addition to the above, some customers will have special requirements for the precision of marble platforms, such the flatness of the national standard below the nanometer level. This kind of ultra-high precision requirement needs to meet: ①strict material selection ②superb production grinding ③customized plate thickness ④strict use environment ⑤precision grinding under the use environment.
