Low Carbon Steel Pipe Manufacturer Aging Tendency

Low Carbon Steel Pipe Manufacturer Aging Tendency

Low carbon steel pipe has a large aging tendency, which means low carbon steel pipe has both quenching aging tendency and deformation aging tendencies. When the steel from the rapid cooling of high temperature, ferrite scraping carbon, nitrogen supersaturation, the formation of iron carbon nitrogen started slowly at room temperature. Which leads to the increase of strength and hardness, and the decrease of plasticity and toughness. This penomenon known as quenching aging. Low carbon steel pipe will produce aging even if not quenched and air cooled.

Carbon steel pipe and nitrogen atoms interact with dislocations, and carbon and nitrogen atoms gather around the dislocation lines. This combination of carbon and nitrogen atoms and dislocation lines is called the Koch's air mass. It will increase the strength and hardness of steel and plasticity and toughness reduced, a phenomenon known as deformation aging.

Compared with quenching, deformation of low carbon steel pipe has a greater harm on plasticity and toughness. From the upper yield point occurs until the extension of the end of the yield, the surface of the sample due to uneven deformation of the surface formed by the surface wrinkles, known as the Ryders zone. Many stamping parts are often scrapped.

There are two ways to prevent it. A high pre-deformation method, pre-deformation of the steel placed for a period of time after the stamping will produce Rüders belt, so the pre-deformation of the steel before the stamping time should not be placed too long. The other is the addition of aluminum or titanium steel to form a stable compound with nitrogen, to prevent the formation of Kel's air-induced deformation of the aging.

The Application of Low Carbon Steel Manufacturer

The Application of Low Carbon Steel Manufacturer

Low carbon steel is generally rolled into angle steel, channel steel, I-beam, steel pipe, steel strip or steel plate. It is widely used in the production of various building components, containers, cabines, furnace and agricultureal machinery. High quality low carbon steel rolled into thin plate for making car cab, hood and other deep wahsed products. Also it can be rolled into bars for the production of mechanical parts of less dmanding. Low carbon steel is generally not heat treated before use, when the carbon content is achieve 0.15% or more by carburizing or cyanindation, it can be used for shaft, bushings, sprockets and other parts require high surface temperature and ware resistant.

Low carbon steel is limited in its use due to its low strength. Increase the manganese content appropriately, and adding trace amount of vanadium, titanium, niobium and other alloying elements, can greately enhance the strength of stee. If you reduce the carbon content of stee and add a small amount of aluminum, a small amount of boron and carbide-forming element, you can get ultra-low-carbon bainite group enough strength, and maintain good plasticity and toughness.