Purification of Melt Bath by External Purification Method
Introduction
Metal purification using an external purification technique is a process of removing unwanted impurities from the surface, body, and/or components of molten metals. This method involves the use of inert gas, liquid or solid purifying agents, and specialized equipment. This purification technique is capable of removing various types of impurities, such as electrically-charged particles, inclusions, bacteria, residuals, and other contaminants, from molten metals. It also minimizes the risk of localized overheating, which may result in product defects.
Advantages of External Purification
The primary advantage of using the external purification method is its ability to remove contaminants from the surface, body, and components of the process, without affecting the material properties such as mechanical strength, electrical properties, and surface finish. This method is also convenient and cost-effective. It is also more efficient, since it can reduce the amount and risk of potential health hazards to the operator as well as conserve energy and resources. Furthermore, this purification process removes impurities without increasing the production costs, lowering the cost of product quality, and increasing yield and product purity.
Application
External purification methods are typically applied for purifying molten metals. This may include impurities from the surface, body, and components of the process. This method is used to clean metals from oxidized elements, such as iron, aluminum, or titanium, as well as from foreign particles, abrasives, bacteria, and other impurities. Additionally, it also removes electrically-charged particles, embedded particles, surface contaminants, and other contaminants from the process. It can also reduce the risks associated with localized overheating and product defects.
Process
The external purification process typically involves the use of inert gas, liquid, or solid purifying agents and specialized equipment. An inert gas is generally used to purge the melted metal of impurities, such as inclusions, bacteria, and other contaminants. This is accomplished by displacing the unwanted material. The molten metal is then passed through a filter, in which the impurities are separated and/or removed. After this process, the molten metal is analyzed and analyzed again to ensure that it is completely purified.
Cost
The cost of using external purification to purify molten metals depends largely on the complexity of the process. Generally, the cost of this process is much cheaper than that of other purification methods.
Conclusion
External purification is a highly effective way of removing unwanted impurities from the surface, body, and/or components of the melt bath. This purification technique can remove various types of impurities, such as electrically-charged particles, inclusions, bacteria, residuals, and other contaminants. Additionally, it minimizes the risk of localized overheating and product defects. The cost of using external purification to purify molten metals depends largely on the complexity of the process, but is generally much cheaper than that of other purification methods.
