09CuPCrNi-A weather-resistant steel plate is widely used

09CuPCrNi-A weathering steel plate containing machine parts steel is widely used in the machinery manufacturing industry and the amount of large steel. Common machines are shafts, gears, connecting rods, springs, fasteners, bearings, etc. on automobiles, tractors, machine tools, power plant equipment, mining machinery and other machines.

Machine parts in the work to withstand tensile, compression, bending, shear, torsion, impact, vibration, friction and other forces, sometimes several forces at the same time.

These forces can produce various stresses on the machine parts, such as tensile stress, compressive stress, shear stress, etc., the size of the stress can be constant, can also be alternating; Loading can be gradual or sudden.

The working temperature range of machine parts is mostly between -50 and 100 ° C, and it is also subject to the corrosion of atmosphere, water, lubricating oil and other media.

In the manufacturing process of machine parts, cold thermoplastic processing such as forging, rolling, extrusion, drawing and turning, milling, planing, grinding and other cutting processes are often carried out.

Therefore, Q345NH steel for machine parts requires good plastic processing properties and cutting processing properties. Machine parts are mostly strengthened by heat treatment to give full play to the performance potential of the material, so it is also required that the steel used for machine parts has a certain degree of hardenability, and the chemical composition (mass fraction) of the steel used for machine parts is generally: C, Mn or Si acuities were 1.0% and 2.0% or less, Cr, Ni acuities were 3.0% and 4.5% or less, Mo or W 1.0% or less, V, Nb, or are 0.5% or less 0.5% or less, M 1.2% or less, B 0.005% or less.

Generally, the total mass fraction of alloying elements does not exceed 5%, which belongs to low alloy steel; A few are between 5% and 10%, belonging to the medium alloy steel. Most of the steel used for machine parts is high-quality steel with low SP content, and most of the weather-resistant steel manufacturers are deoxidized and killed steel.

In order to reduce the content of inclusions and gases in steel and improve the purity and uniformity, the corroded steel plate can be melted by liquid steel vacuum treatment, vacuum ingot casting, electroslag remelting, ladle refining, vacuum induction, vacuum consumable electrode and other melting methods.

The steel used for machine parts also belongs to structural steel, including high-quality carbon structural steel and alloy structural steel; According to the production process and use can be divided into: tempered steel, carburized steel, nitriding steel, low carbon martensitic steel, cold deformation steel, free cutting non-tempered steel, spring steel, bearing steel, special purpose steel after treatment for tempered sortenite structure.

Tempered steel usually has good comprehensive mechanical properties Tempered steel refers to the tempered treatment, that is, fire and high humidity tempering after the use of structural steel.

Weathering steel brazier

HENAN JINBAILAI INDUSTRIAL CO.,LTD. Established in 2008, is specialized in the research, development, sale and service of steel fire pits, steel planters, steel screens, steel edgings and steel sculptures, water feature,etc. 
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