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Composite for engine cylinder cover

A technology of engine cylinder head and composite material, which is applied in the field of materials, can solve the problem that it is difficult to meet the high temperature requirements of the engine cylinder head, and achieve the effect of improving the tensile strength

Inactive Publication Date: 2017-06-20
林景阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these traditional brands of aluminum-silicon alloys have met the requirements for use, when the engine power is further increased, it is difficult for this type of cast aluminum alloy to meet the high-temperature use requirements of the engine cylinder head.

Method used

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  • Composite for engine cylinder cover

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A composite material for an engine cylinder head. In percentage terms, the chemical composition is: Si 4.1%, Fe 5.6%, B 2.1%, Ge0.4%, Mg 12.6%, Na 0.1%, Rb 0.02%, Sn 0.08% , the balance being Al.

[0017] Wherein: said Na is derived from sodium carbonate.

[0018] A method for preparing a composite material for an engine cylinder head, the specific steps are:

[0019] (1) First, put ceramic powder, aluminum ingots and magnesium ingots into a high-frequency induction melting furnace, raise the temperature to 923°C, and maintain the temperature for 1 hour, then add iron ingots, sodium carbonate, and borax, mix and stir until completely melted, and then The temperature was lowered to 712°C to obtain a refined liquid;

[0020] (2) Finally, add germanium stone, rubidium ingot, and tin powder to the above-mentioned refining liquid for refining treatment, add glutarimide and diethyl butyrylmalonate during the treatment process, pour into the mold after refining, Instantly. ...

Embodiment 2

[0022] A composite material for an engine cylinder head. In percentage terms, the chemical composition is: Si 4.4%, Fe 5.7%, B 2.2%, Ge0.4%, Mg 12.9%, Na 0.2%, Rb 0.08%, Sn 0.09% , the balance being Al.

[0023] Wherein: said Na is derived from sodium carbonate.

[0024] A method for preparing a composite material for an engine cylinder head, the specific steps are:

[0025] (1) First, put ceramic powder, aluminum ingots and magnesium ingots into a high-frequency induction melting furnace, raise the temperature to 937°C, and maintain the temperature for 1.3 hours, then add iron ingots, sodium carbonate, and borax, and mix and stir until completely melted. Then lower the temperature to 719°C to obtain a refined liquid;

[0026] (2) Finally, add germanium stone, rubidium ingot, and tin powder to the above-mentioned refining liquid for refining treatment, add glutarimide and diethyl butyrylmalonate during the treatment process, pour into the mold after refining, Instantly.

Embodiment 3

[0028] A composite material for an engine cylinder head, in percentage terms, the chemical composition is: Si 4.8%, Fe 5.8%, B 2.3%, Ge0.5%, Mg 13.4%, Na 0.3%, Rb 0.09%, Sn 0.11% , the balance being Al.

[0029] Wherein: said Na is derived from sodium carbonate.

[0030] A method for preparing a composite material for an engine cylinder head, the specific steps are:

[0031] (1) First, put ceramic powder, aluminum ingots and magnesium ingots into a high-frequency induction melting furnace, raise the temperature to 942°C, and maintain the temperature for 1.5 hours, then add iron ingots, sodium carbonate, and borax, and mix and stir until completely melted. Then lower the temperature to 722°C to obtain a refined liquid;

[0032] (2) Finally, add germanium stone, rubidium ingot, and tin powder to the above-mentioned refining liquid for refining treatment, add glutarimide and diethyl butyrylmalonate during the treatment process, pour into the mold after refining, Instantly.

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Abstract

The invention discloses a composite for an engine cylinder cover. The composite for the engine cylinder cover comprises 4.1%-5.7% of Si, 5.6%-5.9% of Fe, 2.1%-2.6% of B, 0.4%-0.6% of Ge, 12.6%-13.9% of Mg, 0.1%-0.4% of Na, 0.02%-0.16% of Rb, 0.08%-0.15% of Sn, and the balance Al. Compared with an existing material for the engine cylinder cover, the indoor-temperature (20 DEG C) tensile strength and the high-temperature (500 DEG C and 700 DEG C) tensile strength of the prepared composite are both greatly improved, the requirements for higher operating temperature and higher burst pressure of a high-performance engine can be met, and the composite can serve as a material of a high-performance engine cylinder cover of a special racing vehicle.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a composite material for an engine cylinder head. Background technique [0002] Cast aluminum alloy has a series of advantages such as small specific gravity, high specific strength, good casting formability and processing performance, and is widely used in auto parts. At present, the engine block, cylinder head and piston of most cars at home and abroad are produced by high-strength cast aluminum alloy. The wide use of cast aluminum alloy in automobiles can effectively reduce the weight of automobiles, improve the fuel efficiency of engines, and reduce the pollution of automobile exhaust emissions to the atmosphere. At present, the cast aluminum alloys used as automobile engine cylinder head materials mainly include domestic ZL101, ZL104 and ZL702A, 319.0 in the United States, AC4B in Japan, and G-AlSi6Cu4 aluminum alloy in Europe. Although these traditional grades of alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06
CPCC22C21/08C22C1/026C22C1/06
Inventor 林景阳
Owner 林景阳