Mechanical Polishing & Electro-Polishing
Smeared Metal Surface
Smeared Metal Surface
Surface after Mechanical Rolishing
Although mechanical polishing (MP) is able to reduce the roughness from smeared stainless surface rapidly, there are still some defects:
1. Surface roughness (Ra) is only approx.0.3-0.5µm that still has great possibility of adhering particles.
2. The passivation layer must be destroyed after MP and caused rust easily.
3. During MP, the particle adhering problem on the interior surface is too tough to meet perfect purity even if after high purity cleaning procedure.
1. Surface roughness (Ra) is only approx.0.3-0.5µm that still has great possibility of adhering particles.
2. The passivation layer must be destroyed after MP and caused rust easily.
3. During MP, the particle adhering problem on the interior surface is too tough to meet perfect purity even if after high purity cleaning procedure.
Electro-Polishing Treatment
The performance of Electro-Polishing is able to smooth away all the defects of MP. The features of EP are as following:
1. The stainless surface is dissolved by EP liguid to remove all the particles and reduce roughness (Ra) to 0.05µm.
2. During EP process, Fe ion separates out first of all and let a passivation layer(Cr2O3) be created on the stainless surface for higher resistance of corrosion.
1. The stainless surface is dissolved by EP liguid to remove all the particles and reduce roughness (Ra) to 0.05µm.
2. During EP process, Fe ion separates out first of all and let a passivation layer(Cr2O3) be created on the stainless surface for higher resistance of corrosion.
Surface after Electro-Polishing
Perfect mirror finished surface without any impurities.
