Huawei, Harbin Institute of Technology jointly issued diamond chip patent, cultivate diamonds rose 16%

Factors Affecting Ultra-Precision Grinding and Polishing

In order to achieve sub-nanoscale or even nanoscale processing accuracy, the processing environment supported by ultra-precision grinding and polishing must be strictly controlled. The change of temperature not only affects the geometric accuracy of the grinding machine, but also affects the machining accuracy of the workpiece. Because the temperature of any object is not balanced, it will cause changes in size.

Several Characteristics Affecting the Quality of Diamond Powder

1. Control of diamond powder particle size and large particles 2. Control of the strength of diamond powder 3. Control of particle shape of diamond powder

Thermal Conductivity and Application of Diamond Monowafer

The thermal conductivity of diamond is quite good, and it has been applied to many heat dissipation components. For example, the heat dissipation of cpu is coated with a layer of diamond film to speed up its heat dissipation. This is also the odd heat dissipation principle that determines its excellent heat dissipation performance. Diamond is the highest thermal conductivity of the material in nature-beyond the metal material, is a good thermal conductor, its thermal conductivity varies, generally 138.16W/(m · K). Type IIa diamond thermal conductivity is particularly good, in liquid nitrogen temperature is 25 times that of copper, the thermal conductivity at room temperature is as high as 2000W/(m · K), 5 times that of copper, with super thermal conductivity. According to the trace elements contained in diamond can be divided into type I diamond and type II diamond two types. Type II diamond has better thermal conductivity, solution and semiconductor properties, and is mostly used in space technology and cutting-edge industry.

Teach you to understand magnesium oxide

Magnesium oxide is one of the main raw materials in magnesium cementitious materials, which can be divided into light burned magnesium oxide and heavy burned magnesium oxide according to the calcination production process. Active magnesium oxide is divided into high activity, medium activity and low activity according to iodine absorption (active magnesium oxide used in magnesite industry belongs to high activity magnesium oxide). Light burned magnesia refers to magnesia formed by magnesium compounds after magnesite ore is calcined at a high temperature of 700-900 degrees Celsius, also known as active magnesia, chemical formula MGO, relative molecular weight 40.3, melting point magnesia is one of the main raw materials in magnesia cementitious materials, it can be divided into light burned magnesia and heavy burned magnesia according to the calcination production process. Active magnesium oxide is divided into high activity, medium activity and low activity according to iodine absorption (active magnesium oxide used in magnesite industry belongs to high activity magnesium oxide). Light burned magnesium oxide refers to magnesium oxide formed by magnesium compounds after magnesite ore is calcined at a high temperature of 700-900 degrees Celsius, also known as activated magnesium oxide, chemical formula MgO, relative molecular weight 40.3, melting point 2800C °, boiling point 3600 °, odorless, tasteless, non-toxic, insoluble in pure water and organic solvents, solubility in water increases due to the presence of carbon dioxide, soluble in acid or ammonium salt solution, easy to deliquescence, in the air can gradually absorb carbon dioxide and moisture to form magnesium carbonate double salt. Heavy-burned magnesium oxide refers to high-purity magnesium oxide calcined at a high temperature greater than 1000 °, and generally refers to products with a purity of magnesium oxide of not less than 98%. It is mainly used in smelting, refractory materials, alloy materials and other fields as well as insulating fillers for electrical components. It can also be used to produce other magnesium salt materials. It is mainly used to prepare refractory materials.

Quantum technology, how to subvert the future?

In recent years, quantum technology has developed by leaps and bounds, and has become the frontier of a new round of scientific and technological revolution and industrial transformation. Accelerating the development of quantum technology plays a very important role in promoting high-quality development and ensuring national security. The development of quantum technology has great scientific significance and strategic value. It is a major disruptive technological innovation that has an impact on and reconstructs the traditional technological system. It will lead a new round of technological revolution and industrial transformation. Now, basically all the high-tech companies in the world are carrying out fierce research, competition and grabbing!! In particular, Google, IBM and Intel in the United States are racing to speed up the study of quantum computing in order to take the lead and achieve the so-called "quantum hegemony ''.

Why does wire cutting process deform? How to avoid it?

1. Causes of workpiece deformation during wire cutting 2, the workpiece processing deformation prevention measures 1) Rough machining or stress release cutting before cutting 2) Processing of threading holes 4) Multiple cutting 5) Multi-type hole concave template processing process optimization 6) Set multi-segment temporary flow

Rough purification process of diamond powder

Usually, the raw materials of diamond micropowder are mostly low-grade RVD diamond or diamond micropowder synthesized by explosion method. The raw materials themselves contain a small amount of impurities such as graphite, catalyst metal and pyrophyllite. At the same time, a large number of metal impurities will be introduced in the later process of crushing and shaping. High impurity content will reduce the overall hardness of diamond and affect the performance of deep processing tools. In order to meet the requirements of the subsequent classification process for product purity, these impurities must be removed before transferring to the classification process. Due to the diamond raw material pyrophyllite and graphite content is less. In order to simplify the treatment process, the general crude purification process is no longer specialized treatment, the product has special requirements, after the completion of the classification of the finished product for post-finishing.

Classification of diamond powder

Diamond powder in the completion of the ball grinding crushing, shaping and rough purification process, there is a very important process, is the product size classification, the main purpose is to require the size distribution as concentrated as possible and completely eliminate the super size particles. Because the diamond powder particles are too fine, the traditional screen classification can not achieve accurate classification, the selection of scientific, efficient and precise classification method is particularly important.

Advantages of Shandong automatic weighing and sorting machine

Shandong multi-level weight sorting machine is a high-tech machine, using automation technology and high-precision weighing sensor, can automatically sort and weigh objects, in the production process has many advantages. First of all, this kind of machine can greatly improve production efficiency. It can sort and weigh objects at a very fast speed, saving a lot of manpower and time costs, and improving production efficiency for the factory. Secondly, this machine can also improve the sorting accuracy. The high-precision weighing sensor can accurately capture the weight information of the object, avoid the error caused by the inaccurate manual sorting, and improve the quality of the product. In addition, Shandong multi-stage weight sorting machine has a very high stability and reliability. Using advanced electronic control technology and high-quality parts, it is very stable and reliable in the working process, and is not easy to malfunction and damage, making this machine an important equipment for sorting, packaging and other production lines in the factory. Shandong multi-stage weight sorting machine has the advantages of high efficiency, precision, stability and reliability, which can bring great help and benefit to the production process, and is an indispensable and important equipment for modern industrial production. Shandong multi-stage weight sorting machine is a kind of machine that represents the contemporary advanced technology level. Its birth makes the production process of the factory change