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Composite automobile cross axle and preparing method thereof

A technology of composite materials and cross shafts, which is applied in the field of auto parts preparation, can solve the problems of decreased overall transmission efficiency, increased wear, increased elastic deformation, etc., to reduce thermal decay efficiency, prolong service life, improve toughness and wear resistance sexual effect

Inactive Publication Date: 2018-12-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main failure mode of the cardan shaft is wear and tear, which increases the dynamic stress among the elements in the mechanical system of the coupling, which in turn increases wear and elastic deformation, causes system vibration, generates noise, and reduces the overall transmission efficiency of the system. The probability of failure increases
At the same time, thermal decay is prone to occur during the working process of the cross shaft, which further reduces the life of the cross shaft

Method used

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  • Composite automobile cross axle and preparing method thereof
  • Composite automobile cross axle and preparing method thereof
  • Composite automobile cross axle and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A composite material automobile cross shaft is formed by a reinforcement body and a base body by extrusion casting. The reinforcement body is a three-dimensional interpenetrating space structure of WC ceramic particle reinforced composite material, and the base body is 40Cr alloy steel.

[0023] The preparation method of the composite automobile cross shaft, the specific steps are as follows:

[0024] (1) Make a three-dimensional interpenetrating space structure plastic mold through 3D printing technology, such as figure 1 shown;

[0025] (2) Put a mixture of 55kg 20μm WC ceramic particles and 20μm 5kg iron powder, 5kg potassium titanate fiber, 2kg boron oxide, 1kg nickel powder and 1kg titanium powder into a ball mill for 10 minutes, then add water glass to continue ball milling 10 minutes, the amount of water glass added is 3% of the mass of the ceramic particles, and then filled into the mold prepared in step (1), and sintered at 300 ° C for 60 minutes to obtain a t...

Embodiment 2

[0028] A kind of composite material automobile cross shaft, which is formed by extrusion casting method of reinforcement and matrix, and the reinforcement is ceramic particles (Al 2 o 3 +ZrO 2 +SiO2 2 +TiO 2 ) reinforced composite three-dimensional interpenetrating space structure, the matrix is ​​40CrNi alloy steel.

[0029] The preparation method of the composite automobile cross shaft, the specific steps are as follows:

[0030] (1) Make a three-dimensional interpenetrating space structure plastic mold through 3D printing technology, such as figure 1 shown;

[0031] (2) 55kg of 80μm Al 2 o 3 +ZrO 2 +SiO2 2 +TiO 2 A mixture of ceramic particle mixture and 80 μm 4kg iron powder, 3kg potassium titanate fiber, 2kg boron oxide, 1kg nickel powder and 1kg titanium powder is put into a ball mill for 18min, and then a mixture of aluminum metaphosphate and aluminum dihydrogen phosphate is added as The binder continued to be ball-milled for 12 minutes, and the amount of bin...

Embodiment 3

[0034] A composite automobile cross shaft is formed by a reinforcement body and a base body by extrusion casting. The reinforcement body is a ceramic particle (TiC+SiC) reinforced composite material three-dimensional interpenetrating space structure, and the base body is 20CrMo alloy steel.

[0035] The preparation method of the composite automobile cross shaft, the specific steps are as follows:

[0036] (1) Make a three-dimensional interpenetrating space structure plastic mold through 3D printing technology, such as figure 1 shown;

[0037] (2) Put a mixture of 55kg of 140μm TiC+SiC ceramic particle mixture with 200μm of 2kg iron powder, 2kg potassium titanate fiber, 1kg boron oxide, 0.8kg nickel powder and 0.8kg titanium powder into a ball mill for 25min. Then add silica sol and continue ball milling for 13 minutes. The amount of silica sol added is 5% of the mass of ceramic particles, and then filled into the mold prepared in step (1), and sintered at 450°C for 40 minutes...

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Abstract

The invention discloses a composite automobile cross axle. A reinforcing body and a base body are molded through an extrusion casting method, the reinforcing body is a composite three-dimensional interpenetrating space structure body reinforced by ceramic particles, and the base body is a metal material. The preparing method comprises the following steps: fully mixing the micron grade ceramic particles, iron powder, potassium titanate fibers, boron oxide, nickel powder and titanium powder, filling a three-dimensional interpenetrating space structure body mold with the mixture, carrying out sintering molding, putting in a cross axle, injecting a metal base body solution, and carrying out extrusion casting to obtain the cross axle. The wear resistance and the ductility of the axle body and the axle neck root part are obviously improved. At the same time, by adding the potassium titanate fibers and the boron oxide, the heat fading efficiency of the cross axle can be reduced, so that the properties of the cross axle are improved, and the service life of the cross axle is greatly prolonged.

Description

technical field [0001] The invention relates to a composite material automobile cross shaft and a preparation method thereof, belonging to the technical field of automobile parts preparation. Background technique [0002] The cross shaft, also known as ten bytes, is the cross joint, which is one of the key parts in the transmission shaft system of automobiles and tractors, and is used to change the direction and position of the transmission shaft. The cross-axis rigid universal joint is a non-constant velocity universal joint widely used in automobiles, allowing the maximum intersection angle of two adjacent axes to be 15-20°. The cardan shaft is an important part of the cross shaft rigid universal joint. The main failure mode of the cardan shaft is wear and tear, which increases the dynamic stress among the elements in the mechanical system of the coupling, which in turn increases wear and elastic deformation, causes system vibration, generates noise, and reduces the overa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/02B22D18/00
CPCB22D18/00B22D19/02
Inventor 卢德宏冯家玮何光宇唐璐
Owner KUNMING UNIV OF SCI & TECH