2023-08-28

Factors affecting the impregnation effect

The factors that affect the impregnation effect include: firstly, the impregnation process conditions (such as temperature and pressure), and secondly, the physicochemical properties of the impregnation.Influence of process conditions(1) Temperature (product preheating temperature, impregnation tank temperature, impregnation agent temperature), depending on the impregnation process: 1. The product is preheated too high and is prone to oxidation; The temperature is too low, and when it comes out of the preheating box, it quickly cools down and enters the impregnation tank. When the impregnating agent encounters cold products, its viscosity increases and its fluidity deteriorates, resulting in poor impregnation effect. 2. If the tank temperature is too high, asphalt is prone to oxidation condensation reaction, viscosity will also increase, and flowability will deteriorate; The tank temperature is too low, the fluidity of asphalt is also poor, and the impregnation effect is not ideal.(2)

2023-07-07

The development and application of battery materials

1. Lithium -ion battery materialLithium ion batteries are currently widely used batteries. The positive electrode materials of lithium -ion batteries are usually lithium iron phosphate, lithium manganate, etc., while the negative electrode materials are graphite or silicon -based materials. In recent years, new silicon/graphite composite materials have gradually been applied.2. Calcium ion battery materialCalcium ion batteries have the advantages of low cost and high energy density, and have been studied in recent years. Among them, ingredients, calcium sulfide and other materials are considered to have potential electrode materials that have potential to become calcium ion batteries.3. Fuel cell materialThe fuel cell material refers to the electrodes, electrolytes, catalysts and other materials used to manufacture fuel cells. The important one is the catalyst. In recent years, precious metals have developed rapidly.4. ion ion battery material ion battery is a high -power, long -life

2023-08-24

Excellent characteristics of graphite plates

Graphite plate is a good technical property, and its good properties are widely used in various industries. Due to the excellent chemical and physical properties of the product, it has gradually become a key raw material for making grinding tools. Graphite belongs to the raw material of graphite carbon. During the production process, alkaline resistant organic chemical compounds are added, and then subjected to high-pressure manufacturing and forming. After undergoing high-temperature heat treatment, production and processing are carried out, thereby reducing the porosity of graphite products, improving the relative density of products, and possessing good alkali resistance and wear resistance. Graphite plates have high-quality characteristics and are suitable for industries such as forging, metallurgy, and grinding tools. CNC lathe processing machines and equipment further enhance the overall production and manufacturing level, and consider the requirements for precision and surface

2023-03-27

The specific use of graphite

2023-02-22

Many elements of the destruction of graphite molds

There are two methods for burning the graphite molds for the destruction of graphite molds: resistance wire heating method and high -frequency electromagnetic sensing heating method. We know that when the resistance wire heating method is burned, the outer mold temperature is low, and the blade and core mold temperature is higher. The temperature is unevenly decided to decide the part where the mold is destroyed.1. Surface air oxidation and cracks: Because there is no recovery atmosphere during the entire process of burn, the graphite and gas are directly contacted, and it is difficult to avoid the surface air oxidation at high temperature. The higher the temperature, the faster the air oxidation rate; The mold is slowly consumed, leaving only a part of carbon and gray, and stones can be found on the spot on the spot. After a period of time, the surface of the mold will cause porosity and charcoal.2. Fracture: The reason for this kind of destruction is that the gear board of the golde

2023-08-07

Impermeable graphite material

Impermeable graphite is an ideal material with good corrosion resistance and thermal conductivity in chemical production. It can be used to make heat exchangers, reaction tanks, absorption towers, gas combustion towers, hydrochloric acid synthesis furnaces, graphite centrifugal pumps, jet pumps, and various pipelines and joints. Impermeable graphite is divided into three categories:1. Impregnated impermeable graphite products - This is made by impregnating the graphite matrix. Impregnating agents not only reduce the porosity of graphite, but also increase the compressive strength and tensile strength of graphite materials by 1-2.5 times and 4-5 times respectively; Increase bending strength by 2-3 times; Increase the impact strength by 2-2.5 times. Commonly used impregnating agents include phenolic resin, furfural ketone resin, furfural alcohol resin, organic silicon resin, water glass, paraffin, divinylbenzene, asphalt, etc.2. Pressed impermeable graphite product - is a material made

2023-04-20

Electronic effect of graphene

Graphite powder is a very widely used industrial material

Graphite manufacturer's graphite powder is a very widely used industrial material. It is obtained by crushing and grinding through high -purity graphite. After screening, the type of graphite powder is key basis. The more the number of sieve networks, the thinner the particle size, the higher the price. In the past, the technical strength of our country could not be achieved, and high -end graphite powder depends on imports. However, at this stage, Chinese manufacturing companies have introduced overseas cutting -edge powder and grinding machines to produce fine graphite powder around the world. EssenceGraphite manufacturers' various graphite powder, moisturizing graphite powder, conductive graphite powder, nano -technology graphite powder, high pure graphite powder, graphite sieve nets are: 150 mesh, 425 mesh, 1000 mesh, 3000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 5000 mesh, 6500 mesh, 12500 mesh, 15000 mesh, etc. The

2023-05-23

Graphite electrode

It is mainly based on petroleum coke and needle -shaped coke, and coal pettea is used as a binding agent. The heating conductor can be divided into ordinary power, high power and ultra -high power according to its quality indicators. Graphite electrodes include:(1) Ordinary power graphite electrode. Allowing a graphite electrode with a current density of less than 17A/cm 2, it is mainly used for ordinary power furnaces such as steelmaking, silicon, and yellow phosphorus.(2) Antioxidant coating graphite electrode. A graphite electrode with a layer of antioxidant protective layer is coated on the surface, forming a protective layer that can conduct electricity and high temperature resistant oxidation, and reduce the electrode consumption during steelmaking.(3) High -power graphite electrode. Allowing a graphite electrode with a current density of 18 to 25A/cm 2, it is mainly used for high -power arc furnaces for steelmaking.(4) Ultra -high -power graphite electrode. Allows the use of gr

2023-03-07

How to turn a graphite block into a carbon increase agent

How to turn graphite blocks into carbon increases Gentle blocks are indispensable in the production process of carbon and graphite products in the production process of carbon and graphite products. Equipment external forces to get rid of the adhesion between the molecular structure of the raw material and break the raw materials. Since then, everyone can divide them into rough, shattered, sophisticated, fine grinding, etc., but they can divide them according to the broken and boring size and their particles. The same industrial production has a broken specification for different industrial production.Today, as far as everyone is concerned, the three crushing levels in the production of graphite products can be divided into pre -fragmentation, medium crushing and fine grinding. The crushing in front of the burning furnace is generally broken up to 50-70mm on the large graphite block of 200mm. The medium crushing means that the particle size is broken after forging. At this moment, the