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Tie rod ball joint assembly for lightweight automobile and preparation method thereof

A lightweight, tie rod technology, used in steering tie rods, vehicle parts, transportation and packaging, etc., can solve the problems of poor strength and heavy steel pipe quality, and achieve the goal of reducing friction, reducing mass, and enhancing tensile strength and yield strength. Effect

Active Publication Date: 2019-05-10
宁波优适捷传动件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tie rod connecting pipe is mostly made of steel pipe or rigid aluminum-plastic pipe, but the quality of the steel pipe is relatively heavy, and even the high-strength type of aluminum-plastic pipe is slightly inferior in strength, and the tie rod must be further lightened under the premise of ensuring mechanical properties. The weight of the ball joint assembly requires the development of new materials

Method used

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  • Tie rod ball joint assembly for lightweight automobile and preparation method thereof
  • Tie rod ball joint assembly for lightweight automobile and preparation method thereof
  • Tie rod ball joint assembly for lightweight automobile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0034] The tie rod ball joint assembly for lightweight automobiles in Examples 1 to 5, the tie rod ball joint assembly includes a tie rod connecting pipe and ball joint assemblies arranged at both ends of the tie rod connecting pipe and are symmetrical to each other, and the tie rod connecting pipe consists of Made of foamed aluminum alloy, the foamed aluminum alloy is made of aluminum alloy and foaming agent through melting and casting, and the aluminum alloy includes the following components in mass percentage: 0.1-0.3% Si, 2.0-2.6% Cu, 0.3-0.6% Mn, 1.2-1.6% Mg, 0-0.04% Cr, 2.7-3.6% Zn, 0.07-0.15% Ti, 0.15-0.25Zr, 0.3-0.55% Ag, 0-0.25Fe, 3.5-6.3% AlN, 0.03-0.2% RE, the balance is Al.

[0035] The particle diameter of AlN is 130-320 nm.

[0036] RE is a nano-powder with a particle size of 50-80 nm mixed with one or more of Nd, Tb, Dy, and Ho.

[0037] The foaming agent is TiH coated with a slow-release layer on the surface 2 , the composition of the sustained release layer...

Embodiment 6

[0044] The preparation method of the tie rod ball joint assembly for lightweight automobiles in this embodiment includes the following steps,

[0045] (1), prepare raw material according to the raw material in embodiment 3 and proportioning, adopt the method for magnetron sputtering in TiH 2 The surface of the particles is coated with a slow-release layer;

[0046] (2) Heat the aluminum alloy to 730°C to melt it into a molten metal, then cool it down to 660°C, add a foaming agent with a mass of 1.5% of the molten metal, stir at 500rmp for 5.5min, pour it, and cool it to obtain a tie rod Connecting pipe prefabricated;

[0047] (3) Heat, heat, heat, and foam the tie rod connecting pipe preform, first raise the temperature to 430°C, hold it for 8 minutes, then raise the temperature to 520°C, hold it for 12 minutes, then raise the temperature to 630°C, hold it for 3 minutes, and heat it during the foaming process Apply a gradually decreasing pressure of 0 to 250MPa to the tie ro...

Embodiment 7

[0049] The preparation method of the tie rod ball joint assembly for lightweight automobiles in this embodiment includes the following steps,

[0050] (1), prepare raw material according to the raw material in embodiment 3 and proportioning, adopt the method for magnetron sputtering in TiH 2 The surface of the particles is coated with a slow-release layer;

[0051] (2) Heat the aluminum alloy to 735°C to smelt it into a molten metal, then cool it down to 670°C, add a foaming agent with a mass of 2.0% of the molten metal, stir at 550rmp for 4 minutes, pour, and cool to obtain a tie rod connection Tube preforms;

[0052] (3) Heat, heat, heat, and foam the tie rod connecting pipe preform, first raise the temperature to 440°C, hold it for 7 minutes, then raise the temperature to 540°C, hold it for 10 minutes, then raise the temperature to 640°C, hold it for 4 minutes, and heat, heat, heat, and foam Apply a gradually decreasing pressure of 0 to 250MPa to the tie rod connecting pi...

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Abstract

The invention relates to a tie rod ball joint assembly for lightweight automobiles and a preparation method thereof, belonging to the technical field of automobiles. The tie rod ball joint assembly of the present invention includes a tie rod connecting pipe and symmetrical ball joint assemblies arranged at both ends of the tie rod connecting pipe. The tie rod connecting pipe is made of foamed aluminum alloy, and the foamed aluminum alloy is made of aluminum alloy and The foaming agent is made by smelting and pouring, and the aluminum alloy includes the following components in mass percentage: 0.1-0.3% Si, 2.0-2.6% Cu, 0.3-0.6% Mn, 1.2-1.6% Mg, 0-0.04% %Cr, 2.7-3.6% Zn, 0.07-0.15% Ti, 0.15-0.25Zr, 0.3-0.55% Ag, 0-0.25Fe, 3.5-6.3% AlN, 0.03-0.2% RE, and the balance is Al. The tie rod ball joint assembly of the invention is light in weight, and has high strength, toughness and shock absorption effect.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to a tie rod ball joint assembly for lightweight automobiles and a preparation method thereof. Background technique [0002] Steering rod is an important part in the steering mechanism of the car, which directly affects the stability of the car's handling, the safety of running and the service life of the tire. Steering rods are divided into two categories, namely, steering straight rods and steering tie rods. The steering tie rod is responsible for transmitting the movement of the steering rocker arm to the steering knuckle arm; the steering tie rod is the bottom edge of the steering trapezoidal mechanism, and is a key component to ensure the correct kinematic relationship between the left and right steering wheels. At present, the existing tie rod assembly for automobile steering system usually includes a tie rod connecting pipe and a ball joint assembly fixed at both ends of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/00C22C21/10C22C32/00B62D7/20
CPCC22C1/08C22C21/00C22C21/10C22C32/0068B62D7/20C22C1/086
Inventor 许建红
Owner 宁波优适捷传动件有限公司
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