CrMnTi series gear steel and processing technique thereof

Abstract

The invention discloses a CrMnTi series gear steel, which consists of the following components in percentage by weight: 0.16 to 0.23 percent of C, 0.20 to 0.37 percent of Si, 0.80 to 1.25 percent of Mn, 1.00 to 1.45 percent of Cr, 0.015 to 0.035 percent of S, 0 to 0.035 percent of P, 0.01 to 0.02 percent of V, 0.04 to 0.10 percent of Ti, 0.015 to 0.035 percent of Al, 0 to 0.25 percent of Ni, 0 to0.20 percent of Cu, 0 to 0.04 percent of Mo and the balance of Fe and impurities. The gear steel is processed by a special technique. The gear steel manufactured by using the formula and the processing technique has the characteristics of low cost, simplified process, stable quenching property, high production efficiency, good mechanical property and long service life, and is easy to process.

Description

Technical field [0001] The invention relates to a gear steel and a processing method thereof, and more specifically, to a CrMnTi series gear steel and a processing method thereof. Background technique [0002] Gear steel is a kind of composite steel. It is one of the most demanding key materials of special alloy steel used in automobiles, railways, ships, and construction machinery. It is a manufacturing material for core components that ensure safety. In recent years, gear steel is developing in the direction of high performance, long life, smooth gear operation, low noise, safety, low cost, easy processing, and multiple varieties. [0003] CN101289731A discloses a CrMnTi series narrow hardenability belt gear steel and a manufacturing method thereof. Through the narrow composition control of smelting, continuous casting and constant drawing speed control, and then controlled rolling and controlled cold rolling to make gear steel round steel, it mainly solves the problem of steel ...

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Problems solved by technology

[0003] CN101289731A discloses a CrMnTi series narrow hardenability belt gear steel and its manufacturing method. By controlling the narrow composition of smelting, continuous casting constant casting speed control, and then controlled rolling and controlled cold rolling to make gear steel round steel, it mainly solves the problem of steel Inhomogeneous composition, dense structure, fine grains, narrow end hardenability band, high purity, and good surface quality

[0006] CN1851024 discloses a manufacturing method of heavy-duty gear steel, but because precious metal elements such as Ni and Mo are used in its raw materials, its manufacturing cost is too high and it is not suitable for mass production

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