Chlorination roasting, also known as powder-chlorination roasting technique, is a process of heat treatment carried out on metal and metal alloy materials. The main purpose of this process is to increase the cracks-resistance and corrosion-resistance of the material and increase wear-resistance and fatigue life.
In chlorination roasting, the material is placed in a metal or ceramic coated container in which chlorine gas or sodium chloride is added to a temperature range of 950-1200°C. The chlorine gas becomes oxidized by the metal and metal alloy and reacts with the surface of the material. This results in a layer of corrosive oxide and other protective compounds which provide a better protection to the material. The process also increases the surface hardness and reduces fatigue life.
In order to obtain optimum results, one should use an appropriate temperature depending on the type of material and the desired characteristics. The process also requires accurate timing and quality control. This is important in order to obtain the desired results. The time required for the process depends on the type of material, size and shape of the material and the degree of oxidation desired.
Chlorination roasting has several advantages over other surface treatments. It is a relatively cheaper process than other processes and has shorter lead times. It does not require dipping or sandblasting of the material and the process is relatively clean. Moreover, the process produces better and more uniform results compared to other heat treatments. The process is also very fast and efficient.
Chlorination roasting is widely used to improve the corrosion resistant properties of material and to increase the wear and fatigue life of components. It is used in industries such as aerospace, automotive, construction and heavy equipment, but is also increasingly being used in other industries such as petrochemical and food processing.
Chlorination roasting is a relatively safe process when proper guidelines are followed. It is essential to use gloves and protective clothing while handling or performing the process. Eye protection and a full face shield must be worn when the process is carried out. It is also important to make sure that the fumes created due to the process are not hazardous and that they are adequately ventilated.
Chlorination roasting is a process that can provide a lot of benefits if used correctly. It is a cost-effective process and produces excellent results. It is important to follow safety guidelines and use the appropriate equipment and processes for the desired outcome.
