On paper, one must always feel shallow, and never know that one must practice this matter& Rdquo; A philosophical poem by Lu You. The meaning is that the knowledge obtained from books is relatively superficial, and to have a thorough understanding of things, one must personally practice it. The metaphorical scenario is: the unity of knowledge and action transforms knowledge into practice. The entire poem: The ancients lost all their knowledge and effort, but only when they were young and old did they succeed. On paper, one must always feel shallow, and never know that one must practice this matter.

Theoretical knowledge reflects the essence and laws of things, and is the commonality of things. And objective things are vastly different, with vivid and rich personalities, which are the unity of commonality and individuality. Therefore, it is necessary to apply theoretical knowledge, conduct specific analysis of specific situations, organically combine theoretical knowledge with living concrete things, and achieve the specific unity of theoretical knowledge and practice.


For example, in recent years, with the rapid development of high-speed grinding and ultra precision grinding technology, higher requirements have been put forward for grinding wheels. Ceramic resin bonded grinding wheels can no longer meet production needs. Metal bonded grinding wheels have been widely used in production due to their significant characteristics such as high bonding strength, good formability, and long service life. There are two main types of metal bonded diamond grinding wheels according to their manufacturing methods: sintering and electroplating. In order to fully utilize the role of superhard abrasives, foreign countries have been developing a new type of grinding wheel using high-temperature brazing technology since the early 1990s, which is a single-layer high-temperature brazing superhard abrasive grinding wheel. As shown in the figure:

The diamond cup shaped grinding wheel originally imported from QMAXIS in the United States is a specialized grinding wheel for grinding and thinning installed on precision cutting and grinding integrated machines, thin sample cutting and grinding systems, and lithofacies precision cutting machines. The diamond cup shaped grinding wheel and diamond cutting blade are cut and ground in coordination between each step, thus completing a unique thin sample preparation. When it comes to it, let me briefly introduce its structure and characteristics.


The structure of the QMAXIS diamond cup grinding wheel in the United States:


Composed of diamond abrasive layer, transition layer, and substrate.


The working layer is composed of abrasives, binders, and fillers, and is the working part of the grinding wheel.


The transition layer is composed of a binder, metal powder, and filler, which firmly connects the diamond layer to the substrate.


The substrate is used to receive the abrasive layer and is installed in a precision cutting and grinding integrated machine when in use.


Characteristics of QMAXIS diamond cup grinding wheels in the United States:


1. The hardness of diamond abrasives determines the main characteristics of diamond grinding wheels, which can efficiently grind difficult to machine materials such as hard alloys, glass, ceramics, etc., and grinding tools have a long service life.


2. Diamond has high wear resistance, with less grinding wheel wear and longer service life. During grinding, the size, shape, and morphology of diamond abrasive particles change less, making it more suitable for high-precision machining with high production efficiency. It can meet the requirements of both efficient and precision machining tools.


3. The sharpened diamond grinding wheel can maintain the micro cutting edge of the abrasive particles for a long time, and its good cutting performance ensures a small grinding force during the grinding process, thereby reducing grinding power and saving energy.


4. The thermal conductivity of diamond is very good, which is conducive to the evacuation of heat, avoiding phenomena such as workpiece burns, cracks, and falling blocks, greatly improving the quality of workpiece surface processing.


With the progress of the times, the development of science, the needs of society, the development of new materials, and the continuous development of grinding towards high-quality, high-precision, high-efficiency, and automation, the role of diamond grinding wheels is becoming more and more obvious. Metal bonded diamond grinding wheels have high holding strength, long service life, and low wear on abrasive particles, The diamond grinding wheel fully utilizes its strong wear resistance and cutting ability in high-speed and ultra high-speed, efficient, and high-precision grinding processes, especially in hard, brittle, and difficult to machine materials, demonstrating its obvious advantages and wide application. Diamond grinding wheels are widely used in various sectors and fields of industry, such as aerospace, mold manufacturing, semiconductor manufacturing, and optical processing manufacturing. At present, diamond grinding wheels are commonly used for grinding ceramic materials, optical materials, aviation engine turbine blades, and silicon wafer products.


In summary, what is correct in theoretical knowledge is also effective in practice& Flash; Kant