Carbon Additive

Carbon Additive Manufacturer

High carbon content

It can quickly replenish carbon elements for the metal melt.

High and stable carbon absorption rate

It can reduce material waste and ensure uniform metal composition.

Stable chemical properties

It is not prone to decomposition in high-temperature smelting conditions. And it has a wide applicable temperature range, which generally can adapt to temperatures above 1300°C.

Low impurity content

You can control it according to requirements, which can reduce the adverse effects on metal properties.

In addition, it is easy to store and transport, and the addition method is flexible. And some types can also improve the microstructure of the metal and enhance the mechanical properties of the casting.

3.Types of carbon additive

Graphite-based carbon additive

Made from natural graphite, its carbon content of ≥ 90% and has extremely low impurities, quick dissolution, high efficiency. It is suitable for scenarios requiring high purity such as high-quality steel and precision cast iron.

Petroleum coke-based carbon additive 

It contains raw coke, calcined coke, semi-graphite coke, which has balanced performance and high cost-effectiveness.

Anthracite-based carbon additive

Using metallurgical coke and casting coke as raw materials, its carbon content is about 70%-90%. It has low price but high impurities, unstable effect, so you can sue it for low-end casting.

Coal-based carbon additive

It is produced from anthracite through high-temperature processing, with a carbon content of 85%-90%. It has low cost but low activity, which is suitable for scenarios with low requirements for carbon addition speed.

Other types

Such as graphitized petroleum coke, which carbon ≥ 99%, nearly natural graphite. Silicon carbide carbon additive, which combines carbon addition and deoxidation, used for specific processes.

Uses of carbon additive

In the casting industry

Production of gray cast iron

You can use it to supplement the carbon content in molten iron and stabilize the carbon equivalent of cast iron. And it improves the cutting performance and mechanical properties of castings, widely used in castings such as machine bed frames.

Production of ductile iron

You can use it as a key carbon source, used in combination with spheroidizing agents to promote graphite spheroidization. And the it improves the toughness and strength of cast iron, which is often used in high-strength castings.

In the steel–making field

Electric arc furnace steel–making

You can use it to supplement carbon during the melting of scrap steel, suitable for the production of carbon steel, alloy structural steel, etc.

Production of special steels

Using is as tool steel and bearing steel, it can controls the impurity content of the carbonizer. And then it reduces harmful elements in the steel, enhancing the hardness and wear resistance of the steel.

In other fields

Powder metallurgy

You can add is as a carbon source to metal powders to improve the density and strength of powder metallurgy products.

Electrode manufacturing

You can also use it as a carbon-based raw material to adjust the carbon content of the electrode. Thus improving the conductivity and high-temperature stability of the electrode.