Overview of Metal Polishing Methods
Metal polishing methods are an important topic that helps you understand the processes used to improve material surfaces in manufacturing and mechanical processing. Depending on the type of metal, aesthetic requirements, and functional purposes, each polishing method has its own advantages, limitations, and applications.
This article will provide you with a comprehensive view of today’s most common techniques, including mechanical polishing, chemical polishing, electrochemical polishing, sandblasting, and the use of specialized materials, making it easier to choose the right solution for your specific needs.
1. Why Is Metal Polishing Necessary?
During the surface treatment process, grinding and polishing are extremely important steps. Although the metal may meet dimensional standards after rough processing, its surface finish often lacks the desired gloss and smoothness.
Therefore, the metal polishing process plays a crucial role in providing the final, perfect appearance before the product is introduced to the market. This process enhances the aesthetic appeal of the metal surface and significantly increases the product’s value.
2. How to polish metal in industry today?
Currently, to boost productivity, the metal polishing industry is undergoing industrialization. In recent years, the most commonly used methods include:
Mechanical Polishing
Mechanical polishing is a method that uses abrasive grains rotating at appropriate speeds to achieve the desired surface shine. Commonly used abrasives include AL₂O₃, SiO₂, and others.
The mechanical polishing process starts with larger abrasive grains and gradually transitions to finer ones to produce a smooth and shiny surface.
The final step in mechanical polishing involves using ultra-fine abrasives combined with buff products such as cloth wheels or non-woven wheels to achieve a standard level of shine.
Chemical Polishing
Chemical polishing is a method that uses chemicals to remove the peaks of the metal surface.
This method is typically performed after mechanical polishing.
However, it has low economic efficiency and causes environmental pollution, so it is rarely applied
Electrolytic Polishing
Electrolytic polishing is a process that combines both electricity and chemicals.
The object to be polished is suspended in a polishing tank and electrically charged.
In essence, electrolytic polishing is similar to mechanical polishing, but it involves a complex chemical reaction process with electrolysis to enhance the shine and extend the polishing time.
This is a fine polishing method before the electroplating process.
3. The solutions that LEKAR is implementing (using metal polishing machines + consumables).
In the process of searching for polishing solutions for customers, LEKAR has researched many methods to offer the most optimal solutions. After thoroughly and carefully researching, we have come up with two main polishing solutions: mechanical polishing and vibratory polishing. These two methods have many advantages, such as being cost-effective in terms of investment and providing the desired results, making them suitable for the Vietnamese market.
Mechanical polishing method: This method uses machines with appropriate rotational speeds in combination with mechanical consumables such as non-woven wheels, convolute wheels, buff products, and other materials like polishing compounds,…. The friction between these consumables and abrasive grains will produce different surface finishes on the products, such as scratches, smooth surfaces, or hairline scratche
The type of machines used for the mechanical method: Two-spindle grinding machine, two-wheel grinding machine, flat surface grinding machine, etc.
Vibratory polishing method: Uses vibratory and rotary machines combined with materials such as ceramic media, plastic media, porcelain media, porcelain balls, etc., along with polishing solution to create a clean, shiny surface on the product.
Machines used for the vibratory method: U-shaped vibratory polishing machine, rotary polishing machine, high-speed centrifugal disc polishing machine, etc.
Depending on the different types of solutions and materials used, there will be various functions such as deburring, polishing, and smoothing.
As a leading company with more than 10 years of experience in the metal surface polishing market, LEKAR is confident in providing customers with high-quality products and chemicals imported from reputable and reliable suppliers. We are ready to advise and listen to our customers to find the most optimal solution
Refer to more articles about types of materials here:
Refer to the video on how to choose a Two-wheel grinding machine:
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LEKA POLISHING TECHNOLOGY JOINT STOCK COMPANY – LEKAR GROUP
Head Office: Unit No. 11, Louis VII Street, Louis City Urban Area, Dai Mo Ward, Hanoi.
Northern Branch: Lai Xa Industrial Cluster, Hoai Duc Commune, Hanoi. Tel: 02437 646469.
Southern Branch: Nam Tan Uyen Industrial Park, Tan Hiep Ward, Ho Chi Minh City. Tel: 02873 033386.
Website: danhbongkimloai.com.vn | lekar.vn
