A preparation method of high corrosion resistance and high wear resistance engine cylinder head aluminum alloy profile

An aluminum alloy profile, high wear-resistant technology, applied in the field of aluminum alloy material processing, can solve problems such as harsh working conditions, achieve the effects of improving as-cast structure, improving corrosion resistance, excellent corrosion resistance and wear resistance

Active Publication Date: 2016-04-20
HUAIBEI YINFENG ALUMINUM
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Problems solved by technology

At the same time, it must also withstand the corrosion of dilute sulfuric acid formed by sulfur oxides in the fuel combustion products and water vapor, and the working conditions are harsh.

Method used

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Embodiment Construction

[0014] A method for preparing a high-corrosion-resistant and high-wear-resistant engine cylinder head aluminum alloy profile, comprising the following steps:

[0015] (1) Put aluminum ingots, magnesium ingots, and scrap aluminum into the smelting furnace for smelting at a melting temperature of 740°C. When they are more than 80% smelted, put in Al-Si, Al-Cu and other intermediate alloys. After they are all melted, Adjust the temperature to 750°C, add 0.2% of the melt weight of hexachloroethane and 0.2% of sodium fluoroborate to refine for 20 minutes, after refining, electromagnetically stir for 15 minutes, let stand for 30 minutes, then adjust the temperature to 765°C, add Al-Ti-B -Ce master alloy, heat preservation for 7 minutes, slag removal, sampling analysis, strict control of the weight percentage of each element composition of the aluminum alloy solution meets the following requirements: Si9.4-10.8, Cu0.7-1.4, Mg0.4-0.8, Fe0. 15-0.25, Cr0.3-0.6, Mn0.05-0.1, Zn0.02-0.04, ...

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Abstract

The invention discloses a preparation method of a high corrosion resistant and high wear resistant aluminium alloy profile for an engine cylinder cover. the aluminium alloy profile is composed of the following elements, by weight, 9.4-10.8% of Si, 0.7-1.4% of Cu, 0.4-0.8% of Mg, 0.15-0.25% of Fe, 0.3-0.6% of Cr, 0.05-0.1% of Mn, 0.02-0.04% of Zn, 0.01-0.02% of Ni, 0.03-0.05% of As, 0.025-0.045% of Sn, 0.02-0.03% of Cd, 0.015-0.025% of Hf, 0.005-0.01% of B, 0.02-0.04% of Ce, 0.01-0.03% of Yb and the balance Al. The aluminium alloy profile prepared by the above method has excellent comprehensive properties and high high-temperature strength, can operate at 250-300 DEG C for a long time, has excellent corrosion resistance and wear resistance, and has a wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing an aluminum alloy profile of a high-corrosion-resistant and high-wear-resistant engine cylinder head, and belongs to the technical field of aluminum alloy material processing. Background technique [0002] The engine is the heart of the car, and the cylinder head is an important part of the engine. Its structure is complex, and the camshaft runs directly in contact with it. high temperature. At the same time, it must also withstand the corrosion of dilute sulfuric acid formed by sulfur oxides in the fuel combustion products and water vapor, and the working conditions are harsh. Therefore, the requirements for the performance of aluminum alloy materials for the production of cylinder heads are particularly strict, not only requiring high high temperature strength and good toughness, but also requiring excellent wear resistance and corrosion resistance. Contents of the invention [0003] The object of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02C22F1/043B23P15/00
Inventor 刘长颂
Owner HUAIBEI YINFENG ALUMINUM
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