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Graphite Block

Graphite Block

Graphite block, as the name suggests, refers to block graphite. It is a kind of artificial graphite, which is made of coke products by artificial heating and other processes. Because of its structure, carbon graphite block has the following properties: high-temperature resistance, conductivity, thermal conductivity, lubricity, chemical stability, plasticity and thermal shock resistance.

Graphite Blocks for Sale

High Purity Graphite Block

High purity graphite block, also known as molded graphite, means that the carbon content of graphite is>99.99%, which has excellent characteristics such as good conductivity, thermal conductivity, oxidation resistance, low resistance coefficient, high purity, self-lubricating, thermal shock resistance, isotropy, and easy processing. It is widely used in aerospace, solar photovoltaic and semiconductor, continuous casting, cemented carbide and electronic mold sintering, EDM, glass, machinery, energy, and other industries.

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High Purity Graphite Block
Electrolytic Graphite Block

The anode of electrolytic graphite electrolysis often oxidizes the anions in the solution into simple substances or other high valence states.

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Electrolytic Graphite Block
Graphite Block For Vacuum Furnace

The application of Graphite Block For Vacuum Furnace in vacuum furnaces greatly simplifies the design and manufacture of vacuum furnaces, reduces the consumption of metals such as tungsten, molybdenum, tantalum, and stainless steel, reduces the cost, improves some properties of vacuum furnace and expands the application range of vacuum furnace.

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Graphite Block For Vacuum Furnace
Casting Method and Advantages of Graphite Crucible

Application of graphite block in metallurgy and casting production

Graphite block is an industrial graphite product obtained by deep processing of graphite electrodes! Here is a brief introduction to graphite block uses, the application and precautions of graphite block in powder metallurgy and metal casting:


The use of graphite block in powder metallurgy is mainly in the sintering link. The raw materials are put on the graphite block and melted different metals through high temperatures in the sintering furnace or vacuum furnace. Due to the high-temperature resistance and oxidation resistance of graphite block itself, it can meet the requirements of the powder metallurgy industry. Graphite welding block can be used repeatedly, which can save economic costs for customers!


Let's talk about the use of carbon graphite blocks in the foundry industry. The metal can be heated in a graphite crucible to 1500 ℃ and become liquid. At this time, the graphite mold casting method can be used to cast the required industrial products. Graphite mold casting is simply that graphite mold casting is similar to metal mold casting. It has good thermal conductivity and thermochemical stability. Casting tin bronze and aluminum iron bronze with graphite mold can overcome the casting defects such as shrinkage, porosity, and pinhole, and improve the mechanical properties. Zhongtai is one of the most leading graphite block suppliers in the world , and we provide quality and various types of graphite block for you.

Application of graphite block in metallurgy and casting production

How to distinguish the quality of graphite block

In fact, many manufacturers have used graphite blocks for more than ten years and have not identified how to determine the quality of them. Some say it is particles and some say it is a formula. In fact, this is only a summary of products. There is only one key point to distinguish the quality of carbon graphite blocks, that is, density. The importance of density in the application of graphite block can be described from these aspects.


1. In the electroplating and electrolysis industries, many manufacturers only pay attention to the conductivity and price of graphite blocks, but sometimes ignore the important density, because if the density of the graphite block is small, pores are easy to appear on the surface, and penetration is easy to appear in the electrolyte, resulting in the oxidation and falling off of graphite sheets plates, resulting in greatly shortening service life.


2. In the anti-friction industry, graphite welding blocks are mainly used in the form of backing plates to play a lubricating role. Here, the density of graphite blocks is greatly shown. The physical structure of graphite blocks with small densities is not compact, which is easy to fall off in use and the surface consumption is too fast.

How to distinguish the quality of graphite block

Preparation method of graphite block

The preparation of graphite blocks is very important. The weight of each product must be just right in order to produce a high-quality graphite welding block.


1. 70-90 phr anthracite, 5-10 phr catalyst element or its compound, and 10-20 phr silica were selected;


2. Smash and mix the components evenly, put them into the press, raise the temperature and pressure;


3. Raise the temperature to 400 ℃ ~ 1000 ℃ and the pressure to 10 ~ 50kPa;


4. Heat preservation for 10 ~ 40 minutes; The method directly uses coal to manufacture artificial graphite, so as to manufacture carbon graphite block. The process is simple and easy to implement, the energy-saving benefit is prominent, the proportion of the graphite and carbon products is slightly lighter, the particle size is 0.05 ~ 1mm, the performance is not inferior, and the lubrication performance is good.

Preparation method of graphite block
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