CN105177362A - High-strength composite aluminum alloy automobile part mixed with nano titanium carbide powder and casting technology of high-strength composite aluminum alloy automobile part - Google Patents

Abstract

The invention relates to the technical field of aluminum alloy automobile parts, in particular to a high-strength composite aluminum alloy automobile part mixed with nano titanium carbide powder and a casting technology of the high-strength composite aluminum alloy automobile part. According to the part, nano titanium carbide with the surface coated with ludox is added into conventional aluminum alloy materials through composite materials, the good original form of the nano powder coated with the ludox is kept, and the compatibility of the nano powder and metal melting liquid is improved. The diffusion speed of the nano powder in the melting liquid is high, the eutectic form of the alloy materials is effectively improved, and the effects of refining crystal grains, improving the alloy mechanical performance and the like are achieved. Compared with traditional aluminum alloy materials, the part obtained through casting of the aluminum alloy materials has the beneficial effects of being light, high in strength, good in roughness, quite resistant to wearing and the like, and the automobile part prepared from the aluminum alloy materials has high application value.

Description

A kind of high-strength composite aluminium alloy automobile component of blending nano silicon carbide titanium valve and casting technique thereof

Technical field

The present invention relates to aluminium alloy automobile component technical field, be specifically related to a kind of high-strength composite aluminium alloy automobile component and casting technique thereof of blending nano silicon carbide titanium valve.

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 a kind of high-strength composite aluminium alloy automobile component and casting technique thereof of blending nano silicon carbide titanium valve, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of high-strength composite aluminium alloy automobile component of blending nano silicon carbide titanium valve, it is characterized in that, this aluminum alloy spare part material is made up of the raw material of following weight part: aluminium 80-100, magnesium 1-1.5, iron 0.8-1, manganese 0.1-0.2, zinc 0.4-0.5, nickel 0.3-0.4, nano titanium carbide 2-3, solid content are silicon sol 8-10, impurity≤0.01 of 10-15%.

The casting technique of the high-strength composite aluminium alloy automobile component of described a kind of blending nano silicon carbide titanium valve is:

(1) first nano titanium carbide is dropped in silicon sol, ultrasonic disperse stir make it 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 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 20-30min, 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 nano titanium carbide of Surface coating silicon sol in conventional aluminum alloys material, nano-powder after coated Si colloidal sol not only maintains good original form, also improve the consistency of itself and molten metal, its velocity of diffusion in liquation is fast, effectively improve the eutectic morphology of alloy material, there is crystal grain thinning, improve the effects such as alloy mechanical property, the aluminum alloy materials that this aluminum alloy materials casts the component that obtain more traditional has lightweight, intensity is high, good toughness, the advantage such as extremely wear-resistant, the automobile component of this materials of aluminum reasonable offer have using value.

Embodiment

Embodiment

The aluminum alloy spare part of the present embodiment is made up of the raw material of following weight part: aluminium 95, magnesium 1.2, iron 0.8, manganese 0.1, zinc 0.4, nickel 0.4, nano titanium carbide 2.5, solid content are silicon sol 8, impurity≤0.01 of 15%.

Its casting technique is:

(1) first nano titanium carbide is dropped in silicon sol, ultrasonic disperse stir make it 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 25min, 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: 402MPa, unit elongation: 16.2%, hardness: 145HB.This batch of component work-ing life, comparatively conventional aluminum alloyed components on average improved 25%.

Claims (2)

1. the high-strength composite aluminium alloy automobile component of a blending nano silicon carbide titanium valve, it is characterized in that, this component material is made up of the raw material of following weight part: aluminium 80-100, magnesium 1-1.5, iron 0.8-1, manganese 0.1-0.2, zinc 0.4-0.5, nickel 0.3-0.4, nano titanium carbide 2-3, solid content are silicon sol 8-10, impurity≤0.01 of 10-15%.

2. the casting technique of the high-strength composite aluminium alloy automobile component of a kind of blending nano silicon carbide titanium valve as claimed in claim 1, it is characterized in that, described casting technique is:

(1) first nano titanium carbide is dropped in silicon sol, ultrasonic disperse stir make it 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 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, again step (1) gained material is dropped in aluminium alloy, refining agent is added after mechanical stirring 20-30min, after refining treatment terminates, melt cast is shaping, to obtain final product.