2023-10-09

Application characteristics and advantages of self-lubricating bearings

1. Good wear resistance, low friction coefficient, and long service life.2. Having an appropriate amount of elasticity and plasticity can distribute stress over a wider contact surface, improving the bearing capacity.3. It can reduce vibration, reduce noise, prevent pollution, and improve labor conditions for machinery.4. During operation, a transfer film can be formed to protect the grinding shaft without any biting phenomenon.5. The hardness requirements for grinding shafts are low, and shafts that have not been quenched and tempered can be used, thereby reducing the difficulty of machining related parts.6. Thin walled structure, lightweight, can reduce mechanical volume.7. At present, it has been widely used in various sliding parts of machinery, such as printing machines, textile machines, tobacco machinery, micro motors, automobiles, motorcycles, and agricultural and forestry machinery.

2023-03-03

Graphite material type detailed introduction

Graphite material Type introduced in detail Key suitable for multi -type and small total aluminum compulsory. In other words, if you want to change the type of aluminum alloy, you must only exchange graphite . Graphite can be divided into five types based on the main use and its type. Below, everyone will introduce the graphite type in detail.1. Basic type: The ratio of the ratio of external specifications to high width is about 0.7 to 0.8 to 1. The volume is#8 ~#4500.2. Long type: longer than the basic type, the proportion of external specifications to high width is about 0.6 to 0.7 to 1. There are#15 ～#620 on the volume.3. Bowl type: The exterior specifications are relatively large, and the proportion of specifications to high and width is about 1: 1. The volume is#250 ～#5200. The larger one -time melting aluminum alloy material is about 1.5 tons.4. Bringing the shape of the mouth: close to the long -shaped soup slot. The volume is#50 ～#1800.5. The heating furnace type: cylindric

2023-12-06

The role and use of graphite

Graphite is an allotrope of carbon with various excellent properties, and is therefore widely used in many fields. The following are the main functions and uses of graphite:

Material characteristics of graphite powder

Graphite powder is a substance that is very sensitive to chemical reactions. In different environments, its resistivity will change, which means its resistance value will change. However, there is one thing that does not change. Graphite powder is one of the good non-metallic conductive substances. As long as the graphite powder is kept uninterrupted in an insulated object, it will also be electrified like a thin wire. However, there is no accurate number for the resistance value, Because the thickness of graphite powder varies, the resistance value of graphite powder will also vary when used in different materials and environments. Due to its special structure, graphite has the following special properties:1) High temperature resistant type: The melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even after being ignited by an ultra-high temperature arc, the weight loss and thermal expansion coefficient are very small. The strength of graphite increases with te

2024-04-08

The magical properties of graphite and its application in the field of high technology

Graphite, this seemingly ordinary mineral, actually contains many magical properties. Its excellent electrical conductivity, thermal conductivity and chemical stability make graphite widely used in high-tech fields.In the field of electronics, graphite is used as a high-performance electrode material, and its excellent electrical conductivity makes the working efficiency of electronic equipment greatly improved. At the same time, the thermal conductivity of graphite also makes it an excellent heat dissipation material, effectively ensuring the stable operation of electronic equipment.In the field of new energy, graphite has also shown great application potential. As an important raw material for lithium-ion batteries, graphite plays a key role in improving battery energy density and extending battery life. In addition, graphite can also be used to prepare fuel cells, solar cells and other new energy equipment, to promote the rapid development of new energy technology.In the future, wi

2023-09-06

Introduction to Graphite Electrodes

Graphite electrodes are made of petroleum coke and asphalt coke as aggregates, coal tar pitch as binder, and undergo raw material calcination, crushing and grinding, batching, kneading, forming, roasting, impregnationA high-temperature resistant graphite conductive material made by graphitization and mechanical processing, called artificial graphite electrode (referred to as graphite electrode), to distinguish it from using natural graphiteA natural graphite electrode prepared from raw materials.Graphite electrodes are mainly used as conductive electrode materials for arc steelmaking furnaces.

2023-09-08

Excellent Electrical Conductivity of Carbon Graphite Materials and Their Applications

Graphite can conduct electricity because carbon atoms have two 2P electrons with the same spin direction, which are in the valence band (also known as the π band) when in the ground state. When excited, it transitions to the empty conduction band (π * band) above, leaving an equal number of holes in the valence band. Electrons carry negative charges while holes carry positive charges. When subjected to an electric field, electrons and holes move in opposite directions, thus contributing to electrical conduction. Due to the close arrangement of carbon atoms in graphite crystals and the deep degree of electron co-occurrence on the 2P band of each carbon atom, the valence band is wider and can slightly overlap with the upper conduction band. The gap width between them can be reduced to 0.01eV. Therefore, as long as the electrons in the valence band are slightly excited, they can transition to the conduction band, leading to an increase in conductivity. Therefore, the resistance of carbon

2023-11-22

Material characteristics of graphite powder

Graphite powder is a substance that is very sensitive to chemical reactions. In different environments, its resistivity will change, which means its resistance value will change. However, there is one thing that does not change. Graphite powder is one of the good non-metallic conductive substances. As long as the graphite powder is kept uninterrupted in an insulated object, it will also be electrified like a thin wire. However, there is no accurate number for the resistance value, Because the thickness of graphite powder varies, the resistance value of graphite powder will also vary when used in different materials and environments. Due to its special structure, graphite has the following special properties:1) High temperature resistant type: The melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even after being ignited by an ultra-high temperature arc, the weight loss and thermal expansion coefficient are very small. The strength of graphite increases with te

2023-03-14

What are the nature of ultra -fine graphite?

Ultra -fine graphite powder is one of the categories of graphite powder. The raw material of ultra -fine graphite powder is natural scales graphite. The airflow crusher or ultra -fine pieces is used to crush the natural scales graphite. The particle size of ultra -fine graphite powder reaches 6 ~ 10 μm, which is the ultra -fine graphite powder.The preparation process of ultra -fine graphite powder is: natural scales graphite and raw materials focus from compressed air to enter the crushed room by adding feed sprayer, sprayed in the crushing room, spray ultra -high -speed airflow at the crushed room , Fricate into microfimm, with a microfimm airflow, discharge from the exit tube into the hierarchical room, separate the thicker particles, and crushed it again by the rebate tube. Ultra -fine graphite powder was produced.Ultra -fine graphite powder can be widely used in the fields of conductive materials, wear -resistant lubricating materials, atomic energy industry and national defense i

2024-03-19

The balance of graphite mineral exploitation and environmental protection

The development of graphite mineral resources is of great significance for promoting economic and social development. However, how to achieve the balance of environmental protection in the development process is an urgent problem to be solved.