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Formula and production process for high strength-toughness traction bar bracket steel casting

A technology with high strength and toughness and production process, which is applied in the field of metal casting, can solve the problems that the thrust rod bracket is not strong enough, the mechanical properties cannot meet the needs of heavy trucks, etc. Effect

Inactive Publication Date: 2015-03-11
安徽省安工机械制造有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current thrust rod support is not strong enough, and cannot meet the use requirements of heavy trucks in terms of mechanical properties

Method used

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  • Formula and production process for high strength-toughness traction bar bracket steel casting
  • Formula and production process for high strength-toughness traction bar bracket steel casting
  • Formula and production process for high strength-toughness traction bar bracket steel casting

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Embodiment Construction

[0024] The preferred technical solution of the present invention will be described in detail below.

[0025] A high-strength and toughness thrust rod bracket casting steel casting formula according to the present invention, its chemical composition contains C: 0.3-0.45%, Si: <1.0%, Mn: ≤1.0%, P: 0.03%, S: 0.03%, Nb: 0.04 to 0.08%, and the balance is Fe. By appropriately reducing the carbon content of the material, the toughness of the core of the steel casting is improved, and a small amount of alloying element niobium is added to the material to refine the grain and strengthen the precipitation, and improve the mechanical properties of the material.

[0026] The present invention also provides a production process of high-strength and toughness thrust rod bracket steel castings, comprising the following steps:

[0027] 1) Molten steel smelting: smelt qualified molten steel in the medium frequency induction furnace according to the weight ratio of chemical composition, ...

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Abstract

The invention discloses a formula for high strength-toughness traction bar bracket steel casting. The high strength-toughness traction bar bracket steel casting comprises the following chemical constituents in percentage by weight (wt%): 0.3 to 0.45 percent of C, smaller than 1.0 percent of Si, smaller than or equal to 1.0 percent of Mn, 0.03 percent of P, 0.03 percent of S, 0.04 to 0.08 percent of Nb, and the balance of Fe. By properly reducing the carbon content in the material, improving the toughness of a steel casting core part and adding trace amount of alloy element niobium, the effects of grain refinement, precipitation strengthening and the improvement of material mechanical property are played. The invention further discloses a production process of the high strength-toughness traction bar bracket steel casting. The production process comprises the following steps: firstly, molten steel smelting, secondly, casting moulding, and thirdly, heat treatment. The production process of the high strength-toughness traction bar bracket steel casting improves the surface and inherent quality of work pieces by optimizing the casting process.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a high-strength toughness thrust rod support cast steel formulation and a production process thereof. Background technique [0002] The thrust rod bracket is an important part of the automobile transmission system. It plays the role of component positioning and limiting displacement when the transmission system is working, which is of great significance to ensure the safe driving of the automobile. Therefore, improving the mechanical performance of the thrust rod bracket and ensuring its safety in use have significant economic and social benefits. [0003] The external load that the thrust rod bracket bears during work is very complex, including thrust, pressure and bending force, and also bears impact load, so higher requirements are put forward for its mechanical properties. At present, the thrust rod bracket is usually made of medium carbon steel, produced by ca...

Claims

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Application Information

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IPC IPC(8): C22C38/12C22C33/04C21D6/00C21D1/28
Inventor 费昭鹤费彦民
Owner 安徽省安工机械制造有限公司
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