Alloying

 

Principle: The microstructure of steel is changed by adding alloying elements to steel, thereby increasing its hardness. For example, when the chromium (Cr) element is added, chromium can form carbides with carbon in steel, such as and . These carbides have the characteristics of high hardness and high melting point, and are dispersed in the steel matrix, which can effectively impede the movement of dislocations and increase the hardness of the steel. Generally speaking, the higher the chromium content, the more carbides are formed, and the more obvious the increase in steel hardness. When the chromium content reaches a certain proportion (for example, the chromium content in stainless steel is about 13% - 30%), the hardness of the steel will increase significantly.

 

 

Heat Treatment - Quenching

 

Principle: Quenching is a heat - treatment process in which steel is heated above the critical temperature, held for a certain period of time, and then rapidly cooled. During the heating process, the microstructure of the steel changes and austenite is formed. During rapid cooling, austenite does not have time to transform into softer tissues such as pearlite, but transforms into martensite. Martensite is a supersaturated solid solution, which has the characteristics of high hardness and high strength. For example, for medium - carbon steel, the hardness can be significantly increased after quenching. This is because the formation of martensite causes a large number of lattice distortions inside the steel, and the movement of dislocations is greatly restricted, thereby increasing the hardness.

 

Precautions: The cooling rate during the quenching process is very important. If the cooling rate is too slow, austenite may partially transform into tissues such as pearlite, resulting in insufficient hardness; however, if the cooling rate is too fast, it may cause deformation or even cracking of the steel. At the same time, different steels have different critical temperatures, and the quenching temperature needs to be accurately determined according to the composition of the steel. Generally, appropriate quenching process parameters are determined through experiments or by referring to relevant heat - treatment manuals.

 

 

Application Scenarios: Carburizing treatment is widely used in the field of mechanical manufacturing, especially for parts with high requirements for wear resistance. Besides gears, it also includes shaft - like parts, piston pins, etc. During the working process of these parts, the surface needs to bear high friction and wear. Through carburizing treatment, the surface hardness can be effectively increased and the service life can be extended.

 

 

 

 

 

Product name	Ship building plate
Grade	A/B/D/E,A32/D32/E32/F32,A36/D36/E36/F36,A40/D40/E40/F40,A131A/B/D/E/AH32/DH32/EH32/ AH36/DH36/EH36/AH40/DH40/EH40NVA420/D420/E420,NVA460/D460/E460,NVA500/D500/E500, NVA550/D550/E550
Standard	CCS/ABS/LR/GL/BV/DNV/NK/KR/RINA
Thickness	1.5-100mm
Width	600mm to 1500mm
Length	1000mm to 6000mm

 

Surface Treatment - Nitriding

 

Principle: Nitriding is a process in which active nitrogen atoms are allowed to penetrate into the surface of the steel at a certain temperature to form a nitrided layer. The nitrided layer has high hardness, high wear resistance and good corrosion resistance. Different from carburizing, the parts after nitriding treatment have less deformation. During the nitriding process, nitrogen atoms form nitrides with alloying elements in the steel (such as aluminum, chromium, vanadium, etc.), such as , , , etc. These nitrides are dispersed on the surface of the steel, increasing the surface hardness. For example, for some high - precision molds and mechanical parts, nitriding treatment can make their surface hardness reach about HV900 - 1200 (Vickers hardness).

 

Advantages: The temperature of nitriding treatment is relatively low (generally at 500 - 600℃). Compared with carburizing, it will not cause large deformation of the steel, and it is more suitable for parts with complex shapes and high requirements for dimensional accuracy. Moreover, the nitrided layer has good corrosion resistance and can improve the service life of parts in harsh environments.

 

 

 

 

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 CCS AH36 AH32 Steel Plate, 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.

Hot Tags: ccs ah36 ah32 steel plate, China ccs ah36 ah32 steel plate suppliers, factory, S44400, 2 4642, 3005aluminum, SUS434, C52100, F60 Stainless Steel