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A heat-resistant and wear-resistant al-si-cu-ni aluminum alloy and its preparation method and application

An al-si-cu-ni, aluminum alloy technology, applied in the direction of brake discs, mechanical equipment, brake types, etc., can solve the problems of high production cost of castings, huge equipment, complex process, etc., to improve high temperature performance, distribution Uniform, size-reducing effect

Active Publication Date: 2021-07-23
SHANGHAI WANTAI ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process is more complicated and the equipment is huge, which makes the production cost of castings high and its application is limited.

Method used

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  • A heat-resistant and wear-resistant al-si-cu-ni aluminum alloy and its preparation method and application
  • A heat-resistant and wear-resistant al-si-cu-ni aluminum alloy and its preparation method and application
  • A heat-resistant and wear-resistant al-si-cu-ni aluminum alloy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, its composition and the mass percentage of each composition are shown in Table 1.

[0048] A method for preparing a low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, comprising the following steps:

[0049] Prepare aluminum ingots and alloy raw materials. The aluminum ingots are selected from the Al99.70 aluminum ingots in the national standard GB / T 1196-2008 "Aluminum Ingots for Remelting", and the Al99.70 aluminum ingots are heated and melted to obtain aluminum melts. The temperature is controlled at 680-800°C; add other raw materials except Mg and Sr into the aluminum melt, and then add the Mg raw material after the raw material is melted, and stir evenly after the Mg raw material is completely melted to obtain an alloy melt;

[0050] Add RJ-1 refining agent to the alloy melt for refining treatment; the amount of refining agent added is 0.4% of the total weight of the ...

Embodiment 2

[0060] A kind of preparation method of low-silicon heat-resistant wear-resistant Al-Si-Cu-Ni aluminum alloy, with embodiment 1, difference is:

[0061] The composition of low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloys is different, the composition of low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloys and the low-silicon heat-resistant and wear-resistant Al-Si-Cu Table 1 shows the room temperature and 350 °C transient high temperature tensile properties of -Ni aluminum alloy castings.

Embodiment 3

[0063] A low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, its composition and the mass percentage of each composition are shown in Table 1.

[0064] A method for preparing a low-silicon heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, comprising the following steps:

[0065] Prepare aluminum ingots and alloy raw materials. The aluminum ingots are selected from the 383.1 cast aluminum alloy ingots in the national standard GB / T 8733-2016 "Casting Aluminum Alloy Ingots". The components contained in the 383.1 cast aluminum alloy ingots and the mass percentage of each component are: 11.2 %Si, 2.5% Cu, 0.08% Ni, 0.05% Mn, 0.8% Fe, the balance is Al and impurities, individual impurities are less than 0.05%, and the sum of impurities is less than 0.3%.

[0066] Heat and melt the 383.1 cast aluminum alloy ingot to form an aluminum melt. The temperature is controlled at 700-750°C. Add other raw materials except Mg and Sr into the aluminum melt. Afte...

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Abstract

A heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, its preparation method and application, belong to the field of cast aluminum alloys. The heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy includes the following elements by mass percentage: 11.5-22% for Si, 5.0-7.0% for Cu, 3.5-5.0% for Ni, and 0.8-1.5% for Mg %, Mn is 0.4‑0.8%, Fe is 0.8‑1.2%, Zr is 0.08‑0.25%, Ti is 0.08‑0.25%, V is 0.08‑0.25%, Sr is 0.1‑0.5%, and the balance is Al and impurities , wherein the total content of impurities is not more than 0.3%. The preparation method is as follows: after smelting raw materials, adding Sr raw materials for modification treatment, pressurizing up and down casting to obtain heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy. The heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy has the advantages of light weight, good casting performance, good wear resistance, small thermal expansion coefficient, heat resistance, and high mechanical properties.

Description

technical field [0001] The invention relates to a heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy, a preparation method and application thereof, and belongs to the field of cast aluminum alloys. Background technique [0002] Aluminum alloy has the characteristics of low density, high specific strength and specific stiffness, good corrosion resistance, excellent electrical and thermal conductivity, easy recycling, and good low-temperature performance. It has been widely used in automobile manufacturing and played a role in realizing the lightweight of automobiles. It plays an important role and has obvious advantages in reducing weight, improving fuel utilization and increasing output power. Among the aluminum alloys used in automobiles, cast aluminum alloys account for as much as 80%. Cast aluminum alloy has good fluidity and filling ability, and moderate mechanical properties. It is widely used to replace cast iron materials to manufacture engine parts, cylind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/06B22D18/02F02F3/00F16D65/12
CPCB22D18/02C22C1/026C22C1/03C22C1/06C22C21/04F02F3/0084F16D65/125
Inventor 刘玉林毕常兰徐宏
Owner SHANGHAI WANTAI ALUMINUM