CN105177471A

CN105177471A - Damping wear-resisting composite aluminum alloy automobile part mixed with tetrapod-shaped zinc oxide whiskers and casting technology of damping wear-resisting composite aluminum alloy automobile part

Info

Publication number: CN105177471A
Application number: CN201510372334.6A
Authority: CN
Inventors: 叶紫淳
Original assignee: HANSHAN YUYUAN METAL PRODUCTS Co Ltd
Current assignee: HANSHAN YUYUAN METAL PRODUCTS Co Ltd
Priority date: 2015-06-29
Filing date: 2015-06-29
Publication date: 2015-12-23

Abstract

The invention relates to the technical field of aluminum alloy automobile parts, in particular to a damping wear-resisting composite aluminum alloy automobile part mixed with tetrapod-shaped zinc oxide whiskers and a casting technology of the damping wear-resisting composite aluminum alloy automobile part. According to the part, the tetrapod-shaped zinc oxide whiskers with the surfaces coated with nano-carbon sol are added into conventional aluminum alloy materials through composite materials, and after treatment, the unique structural property of the tetrapod-shaped zinc oxide whiskers is kept, nano-carbon adheres to the surfaces of the tetrapod-shaped zinc oxide whiskers, the wettability of the tetrapod-shaped zinc oxide whiskers in metal melting liquid is improved, dispersion and crystallization are accelerated, and the comprehensive performance of the materials is effectively improved. The prepared alloy materials have better mechanical performance and also have certain wave absorption, damping and noise reduction effects. The part obtained through casting of the aluminum alloy materials has the benefit effects of being reinforced, and being light and durable, and has great application prospects.

Description

A kind of wear-resisting Al-alloy automobile component of damping of blending four acicular type zinc oxide crystal whisker and casting technique thereof

Technical field

The present invention relates to aluminium alloy automobile component technical field, be specifically related to a kind of wear-resisting Al-alloy automobile component of damping and casting technique thereof of blending four acicular type zinc oxide crystal whisker.

Background technology

Automobile is made up of tens0000 component, and wherein major part is metallic substance, and the lightweight of automobile component, safe and economized realize the modern basic condition of automobile, is also the only way of improving automobile competitive capacity.Aluminium alloy has that specific tenacity is high, fine corrosion resistance, be easy to be shaped, easier regeneration, have the advantage that the materials such as traditional cast iron, steel are incomparable, therefore, the component manufactured by aluminium alloy are in recent years widely used in the automotive industry gradually.

China has become the fifth-largest automotive industry state in the world, but the average aluminum amount of China's automobile still exists larger difference compared with other developed countries, and performance and the production technique of exploitation further, in-depth aluminium alloy just seem particularly important.

Summary of the invention

The object of the invention is to, provide the wear-resisting Al-alloy automobile component of a kind of damping of blending four acicular type zinc oxide crystal whisker and casting technique thereof, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of wear-resisting Al-alloy automobile component of damping of blending four acicular type zinc oxide crystal whisker, it is characterized in that, this aluminum alloy spare part material is made up of the raw material of following weight part: aluminium 90-100, tungsten 0.1-0.2, silicon 2-3, magnesium 1-2, Cu-cladding Al Rod powder 2-3, nickel 0.3-0.4, four acicular type zinc oxide crystal whisker 3-5, solid content are nano carbon sol 8-10, impurity≤0.01 of 20-25%.

The casting technique of the wear-resisting Al-alloy automobile component of damping of described a kind of blending four acicular type zinc oxide crystal whisker is:

(1) first four acicular type zinc oxide crystal whisker is dropped in nano carbon sol, ultrasonic agitation makes four acicular type zinc oxide crystal whisker dispersed in colloidal sol, subsequently by mixed slurry through warm air drying, remove moisture completely and naturally cool to room temperature, again gained powder is heated to 750-780 DEG C subsequently, constant temperature is for subsequent use;

(2) other leftover materials are mixed, drop in resistance furnace, be heated to 750-780 DEG C of melting process, then step (1) gained material is dropped in aluminium alloy, after mechanical stirring 30-40min, add refining agent, after refining treatment terminates, melt cast is shaping, to obtain final product.

Beneficial effect: the present invention with the addition of the four acicular type zinc oxide crystal whisker of Surface coating nano carbon sol in conventional aluminum alloys material, four acicular type zinc oxide crystal whisker after processing like this not only maintains the structural performance of its uniqueness, its surface is also stained with nano-sized carbon, improve its wetting property in molten metal, accelerate dispersed crystalline, effectively improve the over-all properties of material, the alloy material prepared not only possesses better mechanical property, also there is certain suction ripple, vibration damping, the effects such as noise reduction, this aluminum alloy materials is cast the component obtained and is had enhancing, lightweight, long-lived advantage, has application prospect.

Embodiment

The aluminum alloy spare part of the present embodiment is made up of the raw material of following weight part: aluminium 100, tungsten 0.2, silicon 2.5, magnesium 1.5, Cu-cladding Al Rod powder 3, nickel 0.4, four acicular type zinc oxide crystal whisker 4, solid content are nano carbon sol 10, impurity≤0.01 of 20%.

Its casting technique is:

(1) first four acicular type zinc oxide crystal whisker is dropped in nano carbon sol, ultrasonic agitation makes four acicular type zinc oxide crystal whisker dispersed in colloidal sol, subsequently by mixed slurry through warm air drying, completely remove moisture naturally cool to room temperature, again gained powder is heated to 780 DEG C subsequently, constant temperature is for subsequent use;

(2) other leftover materials are mixed, drop in resistance furnace, be heated to 780 DEG C of melting process, then step (1) gained material is dropped in aluminium alloy, after mechanical stirring 35min, add refining agent, after refining treatment terminates, melt cast is shaping, to obtain final product.

The obtained alloy of the present embodiment is materialsed and is carried out the performance test results and be: tensile strength: 342MPa, unit elongation: 15.4%, hardness: 141HB.This batch of component work-ing life, comparatively conventional aluminum alloyed components on average promoted more than 26%.

Claims

1. the wear-resisting Al-alloy automobile component of the damping of a blending four acicular type zinc oxide crystal whisker, it is characterized in that, this component material is made up of the raw material of following weight part: aluminium 90-100, tungsten 0.1-0.2, silicon 2-3, magnesium 1-2, Cu-cladding Al Rod powder 2-3, nickel 0.3-0.4, four acicular type zinc oxide crystal whisker 3-5, solid content are nano carbon sol 8-10, impurity≤0.01 of 20-25%.

2. the casting technique of the wear-resisting Al-alloy automobile component of damping of a kind of blending four acicular type zinc oxide crystal whisker as claimed in claim 1, it is characterized in that, described casting technique is:

(2) other leftover materials are mixed, drop in resistance furnace, be heated to 750-780 DEG C of melting process, again step (1) gained material is dropped in aluminium alloy, refining agent is added after mechanical stirring 30-40min, after refining treatment terminates, melt cast is shaping, to obtain final product.