Industry News
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Corrosion classification of metal materials
Corrosion patterns of metals can generally be divided into two categories: comprehensive corrosion and localized corrosion. And localized corrosion can be divided into: pitting corrosion, crevice corrosion, galvanic coupling corrosion, intergranular corrosion, selective ...Read more -
Can stainless steel sheets still be corrosion-resistant after wire drawing?
After the stainless steel sheet undergoes wire drawing, it still retains some corrosion resistance and rust prevention effects. However, compared to stainless steel sheets that have not undergone wire drawing, the performance may slightly decrease. Cur...Read more -
Comparison of 200 series, 300 series and 400 series stainless steel
Currently in the Chinese market sales of stainless steel is mainly 300 series and 200 series, the difference between the two is the amount of chemical element nickel content, which caused them in the performance and price of the huge difference. At the current level of n...Read more -
Surface pretreatment before metal passivation treatment
The surface condition and cleanliness of the substrate before the metal passivation treatment will directly impact the quality of the passivation layer. The surface of the substrate is generally covered with an oxide layer, adsorption layer, and adhering pollutants such ...Read more -
Copper Antioxidation – Exploring the Mysterious Power of Copper Passivation Solution
In the field of metal processing, copper is a common material widely used due to its excellent conductivity, thermal conductivity, and ductility. However, copper is prone to oxidation in the air, forming a thin oxide film that leads to a decrease in performance. To enhan...Read more -
Formation of Metal Passivation and Thickness of Passivation Film
Passivation is defined as the formation of a very thin protective layer on the surface of a metal material under oxidizing conditions, achieved by strong anodic polarization, to inhibit corrosion. Some metals or alloys develop a simple inhibiting layer at the activation ...Read more -
The difference between phosphating and passivation treatments in metals lies in their purposes and mechanisms.
Phosphating is an essential method for corrosion prevention in metal materials. Its objectives include providing corrosion protection to the base metal, serving as a primer before painting, enhancing the adhesion and corrosion resistance of coating layers, and acting as ...Read more -
Corrosion Causes and Anticorrosion Methods for Aluminum Alloy in High-speed Trains
The body and hook-beam structure of high-speed trains are manufactured using aluminum alloy, known for its advantages such as low density, high strength-to-weight ratio, good corrosion resistance, and excellent low-temperature performance. By replacing traditional steel ...Read more -
Cold rolled steel plate why pickling passivation
Cold rolled steel plate is rolled out on the basis of hot rolled coil, generally speaking, is hot rolled → pickling passivation → cold rolled such a process. Although in the process because of rolling will also make the steel plate temperature, but still called cold roll...Read more -
Introduction to the polishing process of high clean stainless steel pipe
The surface finish of high-clean stainless steel piping system plays a very important role in the safe production of food and drug. Good surface finish has the characteristics of cleanability, reduction of microbial growth, corrosion resistance, removal of metal impuriti...Read more -
Analysis and Solutions to Common Issues in Electrolytic Polishing
1.Why are there spots or small areas on the surface that appear unpolished after electro-polishing? Analysis: Incomplete oil removal before polishing, resulting in residual oil traces on the surface. 2.Why do gray-black patches appear on the surface after polishing? Anal...Read more -
The principle of pitting corrosion of stainless steel and how to prevent pitting corrosion
Pitting corrosion is also called small hole corrosion, pitting or pitting. It is a form of corrosion damage in which most of the surface of the metal does not corrode or corrodes very slightly, but corrosion holes appear in local places and develop deeper. Some pits exi...Read more