Production method of ceramic-infiltrated aluminum alloy cylinder liner

A production method and cylinder liner technology, applied in metal material coating process, coating, solid diffusion coating and other directions, can solve the problems of wear resistance and deformation resistance, avoid agglomeration and adhesion, and increase high temperature hardness , the effect of reducing friction

Inactive Publication Date: 2017-01-04
ZYNP GRP ANHUI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the cylinder liners on the market are mainly cast iron materials, which have certain limitations in wear resistance and deformation resistance.

Method used

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Embodiment Construction

[0020] The present invention is further supplemented below in conjunction with specific examples, but the present invention is not limited in any way.

[0021] A method for producing an aluminum alloy cylinder liner made of infiltrated pottery, comprising the following steps:

[0022] Step 1: Ingredients: Add Ti and Si when Al is in a liquid state, and AlSiTi and some Si particles precipitated from the melt during the solidification process of the centrifugal casting cylindrical casting are segregated on the outer layer of the casting under centrifugal force, and some Si particles segregate to the outer layer of the casting. Gather the inner layer. Si content is 15wt%, Ti content is 6wt.%, and a small amount of Cu, Ni, Mg;

[0023] Step 2: Smelting: Place the prepared raw materials in an intermediate frequency furnace for melting to melt them into molten iron. The melting temperature is 1530±10°C;

[0024] Step 3: Molten iron inoculation: After the raw materials in molten st...

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Abstract

The invention discloses a production method of a ceramic-infiltrated aluminum alloy cylinder liner. The method comprises steps as follows: step 1, preparation: Ti and Si are added when Al is in a liquid state; step 2, smelting: prepared raw materials are placed in an intermediate frequency furnace for smelting at the smelting temperature of 1530 plus/minus 10 DEG C, so that the raw materials are melted into molten iron; step 3, inoculation of the molten iron: after the raw materials in the molten state are discharged out of the furnace, an inoculant with the mass being 0.5%-0.7% of that of the raw materials is added for treatment; step 4, molten iron casting: the raw materials in the molten state are injected into centrifugal casting equipment for production of a cylinder liner casting, a centrifugal forming step is performed under a magnetic field, and the casting rotating speed is 130 G plus/minus 3 G. The magnetic field is added in the centrifugal casting process, rotating speed difference can be produced between melt at the solidification front and solidified parts, the melt continuously scours the solidification front, so that agglomeration and adhesion of reinforcing particles are avoided, the bonding strength of the particles with a substrate is improved, and comprehensive mechanical and thermal properties of the cylinder liner are further improved.

Description

technical field [0001] The invention relates to the technical field of cylinder liner production, in particular to a production method of an infiltrated aluminum alloy cylinder liner. Background technique [0002] Cylinder liner is a widely used part in automobile engines. Its main functions are sealing, heat conduction, and forming a sliding surface with piston rings. It is one of the core components of the engine. The main failure modes are deformation, crack and wear. Cylinder liner cracks are very harmful and will directly lead to car recalls, while deformation and wear will directly affect engine fuel consumption, emission levels, and life of friction pairs. For the automotive industry, no matter what kind of parts, it is hoped that the The price is to obtain the longest possible service life. [0003] At present, the cylinder liners on the market are mainly cast iron materials, which have certain limitations in wear resistance and deformation resistance. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02B22D13/00C23C8/28
CPCC22C1/026B22D13/00C23C8/28
Inventor 黄德松杨俊朱斌
Owner ZYNP GRP ANHUI CO LTD
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