阅读说明：本技术 一种铝合金发动机底座 (Aluminum alloy engine base ) 是由 华吉 华胜 于 2020-05-13 设计创作，主要内容包括：本发明属于车用机械领域,具体地涉及一种铝合金发动机底座及其制备方法。铝合金发动机底座使用铝合金制备而成,所述铝合金为Al-Mg-Si-Be合金。铝合金发动机底座的制备包括步骤：球磨、冷等静压、热等静压、热处理,机加工,制备出来的铝合金发动机底座刚度高,抗冲击和屈服强度高,能够长时间在循环应力下稳定工作,又能很好地保护发动机,具有很高的实用价值和明显的有益效果。(The invention belongs to the field of vehicle machinery, and particularly relates to an aluminum alloy engine base and a preparation method thereof. The aluminum alloy engine base is prepared from an aluminum alloy, wherein the aluminum alloy is Al-Mg-Si-Be alloy. The preparation of the aluminum alloy engine base comprises the following steps: the aluminum alloy engine base prepared by ball milling, cold isostatic pressing, hot isostatic pressing, heat treatment and machining has high rigidity, high impact resistance and yield strength, can stably work under cyclic stress for a long time, can well protect the engine, and has very high practical value and obvious beneficial effect.)

1. An aluminum alloy engine base which is characterized in that: the aluminum alloy engine base is prepared from an aluminum alloy, wherein the aluminum alloy is Al-Mg-Si-Be alloy.

2. A robot apron which characterized in that: the preparation method of the aluminum alloy engine base comprises the following steps:

(1) weighing raw material metal powder according to a proportion, wherein the metal powder comprises Be powder with the particle size of 8-10 mu m and Al-Mg-Si metal powder, and mixing the Be powder and the Al-Mg-Si metal powder by using a W ball mill with the diameter of 6-8 mm, wherein the ball-milling mixed ball material ratio is 5-6: 1, ball milling is carried out in a nitrogen protective atmosphere, the ball milling rotating speed is 300-400 r/min, and the ball milling time is 4-5 h;

(2) carrying out cold isostatic pressing on the metal powder subjected to ball milling and mixing, wherein the pressure of the cold isostatic pressing is 200-250 Mpa, and the forming time is 20-30 min;

(3) carrying out hot isostatic pressing on the cold isostatic pressed metal blank, wherein the hot isostatic pressing temperature is 600-650 ℃, and the hot isostatic pressing pressure is 130-150 Mpa;

(4) and carrying out heat treatment after hot isostatic pressing forming, and then processing the prepared alloy into the aluminum alloy engine base.

3. The aluminum alloy engine mount of claim 2, wherein: after heat treatment, the aluminum ingot is made into plates with the thickness of 0.1-0.12 mm, the aluminum plates and the glass fiber plates are stacked alternately, the plates are solidified to be made into reinforced aluminum alloy, and finally the aluminum alloy engine base is made.

4. An aluminum alloy engine mount according to claim 3, wherein: the glass fiber board is made of glass fibers with the diameter of 0.2mm and the length-diameter ratio of 6-8: 1.

5. A connecting rod as claimed in claim 3, in which: the plate layer curing process comprises the steps of cleaning the surface of an aluminum alloy plate by acetone and deionized water, placing the aluminum alloy plate and a glass fiber plate into a drying box for drying, spraying primer on the surface of the aluminum alloy, then laying the glass fiber plate on the aluminum alloy plate, finally placing the stacked plates in a vacuum environment, heating to 80-100 ℃, applying pressure of 1-1.2 Mpa, preserving heat and pressure for 3-4 hours, taking out and naturally cooling to obtain the reinforced aluminum alloy.

Technical Field

The invention belongs to the field of vehicle machinery, and particularly relates to an aluminum alloy engine base and a preparation method thereof.

Background

The aluminum alloy has low density, high strength, good plasticity, excellent conductivity, heat conductivity and corrosion resistance. Aluminum alloys are the most widely used non-ferrous structural materials in industry and are used in a large number of applications in the aerospace, automotive, mechanical manufacturing, marine, aluminum alloy and chemical industries. Pure aluminum has a low density of about 1/3 that is iron, a low melting point of 660 ℃, and a face-centered cubic structure, so that the pure aluminum has high plasticity and is easy to process, various sections and plates can be manufactured, the aluminum alloy has good corrosion resistance, but the pure aluminum has low strength and is not suitable for being used as a structural material, and through long-term production practices and scientific experiments, people gradually add alloy elements and apply a heat treatment method to strengthen aluminum to obtain various aluminum alloys with different properties. The alloy formed by adding certain elements can have higher strength while keeping the advantages of light weight of pure aluminum and the like, so that the specific strength is superior to that of a plurality of alloy steels, the alloy becomes an ideal structural material and is widely applied to the aspects of mechanical manufacturing, transportation machinery, power machinery, aviation industry and the like, the airframe, the skin, the air compressor and the like of an airplane are usually made of the aluminum alloy to reduce the dead weight, the aluminum alloy is adopted to replace the welding of a steel plate material, and the structural weight can be reduced by more than 50%.

The aluminum alloy engine base is used as an external protection part of an engine, plays a role in supporting and protecting the interior of the engine, needs to bear stress impact during the operation of the engine, and is required to have high mechanical property.

Disclosure of Invention

In order to solve the problems, the invention provides an aluminum alloy engine base and a preparation method thereof.

The scheme provided by the invention is as follows:

an aluminum alloy engine base is prepared from an aluminum alloy, wherein the aluminum alloy is Al-Mg-Si-Be alloy.

An aluminum alloy engine mount prepared by the steps of:

(1) weighing raw material metal powder according to a proportion, wherein the metal powder comprises Be powder with the particle size of 8-10 mu m and Al-Mg-Si metal powder, and mixing the Be powder and the Al-Mg-Si metal powder by using a W ball mill with the diameter of 6-8 mm, wherein the ball-milling mixed ball material ratio is 5-6: 1, ball milling is carried out in a nitrogen protective atmosphere, the ball milling rotating speed is 300-400 r/min, and the ball milling time is 4-5 h;

(2) carrying out cold isostatic pressing on the metal powder subjected to ball milling and mixing, wherein the pressure of the cold isostatic pressing is 200-250 Mpa, and the forming time is 20-30 min;

(3) carrying out hot isostatic pressing on the cold isostatic pressed metal blank, wherein the hot isostatic pressing temperature is 600-650 ℃, and the hot isostatic pressing pressure is 130-150 Mpa;

(4) and carrying out heat treatment after hot isostatic pressing forming, and then processing the prepared alloy into the aluminum alloy engine base.

Further, after heat treatment, the aluminum ingot is made into plates with the thickness of 0.1-0.12 mm, the aluminum plates and the glass fiber plates are stacked alternately, the plates are solidified to be made into reinforced aluminum alloy, and finally the aluminum alloy engine base is made.

Further, the glass fiber plate is made of glass fibers with the diameter of 0.2mm and the length-diameter ratio of 6-8: 1.

Further, the plate layer curing process comprises the steps of cleaning the surface of an aluminum alloy plate by acetone and deionized water, placing the aluminum alloy plate and a glass fiber plate into a drying box for drying, spraying primer on the surface of the aluminum alloy, then paving the glass fiber plate on the aluminum alloy plate, finally placing the stacked plates in a vacuum environment, heating to 80-100 ℃, applying pressure of 1-1.2 Mpa, preserving heat and pressure for 3-4 hours, taking out and naturally cooling to obtain the reinforced aluminum alloy.

The invention has the advantages that: the prepared aluminum alloy engine base is high in rigidity, impact resistance and yield strength, can stably work under cyclic stress for a long time, can well protect an engine, and has high practical value and obvious beneficial effects.

Detailed Description