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Aluminum alloy cylinder sleeve and preparation method thereof

A cylinder liner and aluminum alloy technology, which is applied to cylinders, cylinder heads, mechanical equipment, etc., can solve the problems of difficulty in meeting the requirements of cylinder liner strength, wear resistance and cost, long running-in time, and high production cost, so as to shorten the running-in time, enhanced binding, light weight effect

Inactive Publication Date: 2017-12-12
ZYNP GRP ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cylinder liners have high production costs, long running-in time, poor bite force, short service life, and are difficult to meet the requirements of high-performance, energy-saving and environmentally friendly engines for cylinder liner strength, wear resistance and cost

Method used

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Examples

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Effect test

preparation example Construction

[0025] The preparation method of a kind of aluminum alloy cylinder liner proposed by the present invention comprises the following steps:

[0026] The raw materials are put into an intermediate frequency electric furnace for smelting to obtain a molten liquid. The chemical composition of the raw materials includes C: 0.1%-0.4%, Si: 15%-20%, Cr: 0.2%-0.4%, Ni: 0.1%~0.2%, Mo: 0.2%~0.3%, Cu: 2%~5%, Zn: ≤0.4%, Mn: 0.2%~0.3%, Ti: ≤0.4%, the balance is Al; The melt is centrifugally cast to obtain the cylinder liner blank; the cylinder liner blank is mechanically processed to obtain the cylinder liner matrix; the cylinder liner matrix is ​​degreasing, cleaned and dried, and then sandblasted for roughening. After 50~120μm, the ceramic material is sprayed on the inner surface of the cylinder liner substrate by the PTWA spraying process, and then honing processing is performed to form an inner coating, and the semi-finished cylinder liner is obtained, wherein the thickness of the inner ...

Embodiment 1

[0028] An aluminum alloy cylinder liner, comprising a cylinder liner matrix, the inner surface of the cylinder liner matrix is ​​coated with a ceramic material to form an inner coating, the chemical composition of the inner coating is 0.2 mm, and the chemical composition of the cylinder liner matrix is ​​as follows Including C: 0.1%, Si: 15%, Cr: 0.4%, Ni: 0.1%, Mo: 0.2%, Cu: 2%, Zn: 0.3%, Mn: 0.2%, Ti: 0.4%, the balance is Al . The outer surface of the cylinder liner base is rotated and sprayed with aluminum powder to form an outer film layer, and the thickness of the outer film layer is 0.7 mm.

[0029] The aluminum alloy cylinder liner in this implementation is prepared by the following steps:

[0030] The raw materials are put into an intermediate frequency electric furnace for smelting to obtain a molten liquid. The chemical composition of the raw materials includes C: 0.1%, Si: 15%, Cr: 0.4%, Ni: 0.1%, Mo: 0.2%, Cu: 0.1% by weight. : 2%, Zn: 0.3%, Mn: 0.2%, Ti: 0.4%, a...

Embodiment 2

[0032] An aluminum alloy cylinder liner, comprising a cylinder liner matrix, the inner surface of the cylinder liner matrix is ​​coated with a ceramic material to form an inner coating, the chemical composition of the inner coating is 0.4 mm, and the chemical composition of the cylinder liner matrix is ​​calculated as the following weight percentage Including C: 0.4%, Si: 20%, Cr: 0.4%, Ni: 0.1%, Mo: 0.2%~0.3%, Cu: 5%, Zn: 0.2%, Mn: 0.3%, Ti: 0.4%, rest The amount is Al. The outer surface of the cylinder liner base is rotated and sprayed with aluminum powder to form an outer film layer, and the thickness of the outer film layer is 1.2 mm.

[0033] The aluminum alloy cylinder liner in this implementation is prepared by the following steps:

[0034]The raw materials are put into an intermediate frequency electric furnace for smelting to obtain a molten liquid. The chemical composition of the raw materials includes C: 0.4%, Si: 20%, Cr: 0.4%, Ni: 0.1%, Mo: 0.2%~0.3% by weight %...

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Abstract

An aluminum alloy cylinder liner disclosed by the present invention comprises a cylinder liner base, the inner surface of the cylinder liner base is coated with a ceramic material to form an inner coating, and the chemical composition of the cylinder liner base includes C: 0.1% by weight ~0.4%, Si:15%~20%, Cr:0.2%~0.4%, Ni:0.1%~0.2%, Mo:0.2%~0.3%, Cu:2%~5%, Zn:≤0.4%, Mn: 0.2%~0.3%, Ti: ≤0.4%, and the balance is Al. The aluminum alloy cylinder liner disclosed by the invention has excellent high-temperature stability and wear resistance, high mechanical strength, light weight, excellent thermal conductivity, and is beneficial to heat dissipation of the engine.

Description

technical field [0001] The invention relates to the field of cylinder liner, in particular to an aluminum alloy cylinder liner and a preparation method thereof. Background technique [0002] Automobile engines generally use aluminum alloy cylinder blocks. In order to reduce the weight of the whole machine and ensure the wear resistance of the cylinder liner, a cylinder liner structure made of cast iron is usually pre-cast in the cylinder block. The outer surface of the existing cylinder liner is generally machined to form grooves or cast mushroom-shaped barbs to ensure tight bonding between the cast iron cylinder liner and the cast aluminum cylinder block, so as to prevent the cylinder liner from falling off the cylinder block. The traditional cylinder liner has high production cost, long running-in time, poor occlusal force, and short service life, and it is difficult to meet the requirements of high-performance, energy-saving and environmentally friendly engines for cylin...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D13/00C23C4/10C23C4/08F02F1/00
CPCC22C21/02B22D13/00C23C4/08C23C4/10F02F1/004F02F2200/06
Inventor 黄德松
Owner ZYNP GRP ANHUI CO LTD
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