Abstract
Nitrogen oxide tank steel blank (YB/T71-1987) is a kind of steel for cylinder design, manufacture, use and inspection of vehicles. It is composed of various craft components and is made of steel with high enough strength and plasticity. As the cost of production is not high, compared with other steel diameters, nitrogen oxide cylinder steel blank (YB/T71-1987) is the most widely used, especially in the production of automobile airbags.
1 Introduction
Nitrogen oxide tanks steel blank (YB/T71-1987) is a kind of medium-carbon and low-alloy steel grade, mainly used to make gas cylinders for vehicles. Due to its low cost, this steel grade has become popular in automobile industry, especially in the production of automobile air bags.
NITROGEN OXIDE cylinder tank steel blank (YB/T71-1987) is mainly composed of C (0.18-0.30), Si (≤0.50 ), Mn (0.90-1.20), P (≤0.035), S (≤0.035), Cu (≤0.035 ), Cr (0.25-0.45) and other elements, which improves its properties and makes it a suitable steel grade for cylinder manufacture.
2 Characteristics and applications
Nitrogen oxide cylinder tank steel blank (YB/T71-1987) has its own characteristics and applications. Its comprehensive mechanical properties are good, with good tensile strength and yield strength; its plasticity is quite good, and its toughness also can satisfy the requirements of grinding. Besides, its good fatigue resistance and excellent corrosion resistance make it more suitable for design and manufacture of cylinders for vehicles.
In addition, nitrogen oxide cylinder tank steel blank (YB/T71-1987) has low cost compared with other steel grade, so it is cost-effective.
3 Processing Technology
Industrial processing technology of nitrogen oxide cylinder tank steel blank (YB/T71-1987) mainly includes hot rolling, cold rolling and cold drawn.
The hot rolling processing involves heating the steel blank to a certain temperature and then rolling it into a certain size. The cold rolling processing uses a large variety of rolling equipment, including flat rolling mill and roller rolling mill. Both hot rolling and cold rolling processes provide improve the surface finish and hardness of the steel blank.
The cold drawn processing technology is mainly used when the material size needs to be further reduced and the mechanical properties of the steel material remain unchanged. It is a general force deformation technology that uses a drawbench, which achieves uniform macroscopic and good finish of the surface.
4 Heat Treatment and Quality
In order to obtain the specified mechanical properties and performances, nitrogen oxide cylinder tank steel blank (YB/T71-1987) should be treated with heat before machining.
Heat treatment of nitrogen oxide cylinder tank steel blank (YB/T71-1987) includes annealing, normalizing, quenching and tempering, Austempering, etc. The purpose of heat treatment for this steel grade is to obtain desirable mechanical properties, such as relevant strength, hardness, toughness, as well as antirust and antistatic electricity performance.
The quality of nitrogen oxide cylinder tank steel blank (YB/T71-1987) is mainly determined by its chemical composition, mechanical properties, heat treatment performance and surface finish. It strictly follows national YB/T71-1987 standard to ensure its quality.
5 Conclusion
Nitrogen oxide cylinder tank steel blank (YB/T71-1987) is a kind of medium-carbon and low-alloy steel grade with good comprehensive mechanical properties and heat treatment performance, low cost and widely used in the production of automobile air bags and vehicle cylinders. Its industrial processing technology, heat treatment and quality are also important in the design and manufacture, and they ensure its final performance.
