CrMnTi series gear steel and processing technique thereof

A processing technology and technology of gear steel, applied in the field of CrMnTi series gear steel and its processing technology, can solve the problems of unsuitable mass production, good surface quality and high manufacturing cost, and achieve the effects of easy processing, reasonable composition and lower production cost

Active Publication Date: 2011-04-13
CHENGDE JIANLONG SPECIAL STEEL
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  • Abstract
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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 Inhomogene

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  • CrMnTi series gear steel and processing technique thereof
  • CrMnTi series gear steel and processing technique thereof

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[0021] Example 1:

[0022] Prepare CrMnTi gear steel according to the following method:

[0023] (1) Preliminary smelting: prepare the materials according to the following ratio: molten iron (68~72t) + scrap steel (6~7t), first add scrap steel and then mix with molten iron; send the raw materials into the primary smelting furnace for smelting at 1660℃, and the end of smelting When adjusting the content of C to 0.06%, the sliding plate is used to stop slag tapping to achieve slag-free tapping, and the tapping process adopts a combination of strong deoxidation and pre-deoxidation;

[0024] (2) Refining: The surplus produced in step (1) is sent to the molten steel to be refined in the ladle refining furnace (LF furnace) numbered D1801544, D1801543, D1801542, D1801541, D1801540, and reheated and refined. 150Kg deoxidizer (AD powder: Al: 18-23%, Al2O3: 55-70%, MgO: <3%, SiO2: <8%, H2O: <0.5%, S: <0.05%, P: <0.05% ), quickly produce white slag, control steel slag basicity to 2.5, sulfur ...

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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 ...

Claims

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Application Information

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IPC IPC(8): C22C38/28C22C33/04
Inventor 姚忠周胜刚张帆曹娜周攀潘东胜张淑红
Owner CHENGDE JIANLONG SPECIAL STEEL
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