S355J2 High Strength Steel

 

 

 

 

S355J2 high - strength steel has a certain degree of corrosion resistance, but in some corrosive environments, additional anti - corrosion measures still need to be taken. The common anti - corrosion methods are as follows:

 

Surface treatment:

 

Cleaning: Using solvents and emulsions to clean the surface of the steel can remove organic substances such as oil, grease and dust, but cannot remove rust, oxide scale, etc. It is usually used as an auxiliary means.

Tool derusting: Manual tools such as steel wire brushes or power tools such as electric grinders are used to polish the surface of the steel. Manual tool derusting can reach St2 level, and power tool derusting can reach St3 level, which can remove loose oxide scale, rust, etc.

Pickling: Generally, there are two methods: chemical and electrolytic. It can remove oxide scale, rust, etc., and can make the surface reach a certain degree of cleanliness, but the anchor pattern is shallow and it is easy to pollute the environment.

Spray (shot) blasting derusting: The high - power motor drives the spray (shot) blasting blades to rotate at high speed, so that abrasives such as steel grit can spray (shot) blast the surface of the steel. It can completely remove rust, etc., and can also achieve the required roughness to improve the anti - corrosion effect.

 

 

 

 

 

 

 

 

Coating anti - corrosion:

 

Brushing method: It is a manual coating method, suitable for small - area coating, with high labor intensity and low efficiency.

Roller coating method: Suitable for coating larger - area workpieces, with higher efficiency than the brushing method.

Air spraying method: It is applicable to almost all types of coatings, and can obtain a uniform, smooth and flat coating, but the coating utilization rate is low and it pollutes the air.

High - pressure airless spraying method: It can overcome the problems of coating rebound and paint mist flying in air spraying, save paint, reduce pollution, have high work efficiency, and is suitable for coating large - area objects.

 

Metal coating anti - corrosion: Metal thermal spraying is generally divided into two categories: combustion method and electric heating method. The process includes substrate surface pretreatment, thermal spraying, post - treatment, finishing and other processes. Through thermal spraying, a corrosion - resistant metal coating, such as zinc coating and aluminum coating, can be formed on the surface of the steel to play a protective role.

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our S355J2 High Strength Steel, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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