16Cr3NiWMoVNbE round steel, 16 хзнвмб (д 108039, вкс-5).

16Cr3NiWMoVNbE steel is a high-performance gear steel with good hardenability, high toughness and plasticity and high fatigue strength. After carburizing, the surface hardness is high, the strength is high, the toughness and plasticity of the center are good, the heat resistance is good, the service temperature can reach 350℃, and the comprehensive performance is good. At present, it has been used to manufacture turbofan engines.

The quality and hardness gradient distribution of carburized layer of 16Cr3NiWMoVNbE gear steel determine the fatigue and wear properties of the gear surface and directly affect the service life of aero-engine gears. Vacuum low pressure carburizing is the most advanced carburizing process at present. Compared with traditional atmosphere carburizing, vacuum low-pressure carburizing can realize non-intergranular oxidation, accurately control the depth of carburized layer, meet the reproducibility in low error range and the selectivity of surface carbon concentration, and has the advantages of high efficiency, energy saving and environmental protection.

Chemical constituents of 16Cr3NiWMoVNbE:

C: 0. 14-0. 19

Silicon: 0.6-0.9

Manganese: 0.4-0.7

P:≤0.0 15

S:≤0.0 1

Chromium: 2.6-3.0

Molybdenum: 0.4-0.6

V: 0.35-0.55

Ni: 1.0- 1.5

Female: 1.0- 1.4

Note: 0. 1-0.2

Heat treatment of 16Cr3NiWMoVNbE;

Normalizing temperature: 940℃, heat preservation (1 ~2) h, and air cooling after discharging.

Tempering temperature: 680℃, heat preservation (1 ~2) h, air cooling.

16Cr3NiWMoVNbE This steel is modeled after the former Soviet Union 16 хзнвмб (д 108039, вкс-5). The steel has good thermal strength, and the tempering temperature can be as high as 350℃. It is suitable for manufacturing important bearing gears and other parts working under contact and bending loads, and can be carburized or nitrided.

Features:

16Cr3NiWMoVNbE has high purity, fine grains and good uniformity of structure; High hardenability; High strength and high temperature resistance; The core has good toughness and high fatigue strength; High contact fatigue strength; Excellent cold and hot workability.