Cylinder sleeve and preparation method thereof

A cylinder liner and blank technology, applied in the field of cylinder liner and its preparation, can solve the problems of affecting the service life of the engine, increasing the oil consumption of lubricating oil, poor heat conduction of the cylinder liner, etc., to reduce the friction coefficient, improve wear resistance, and good lubricity Effect

Active Publication Date: 2020-02-14
ZYNP GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous increase of engine power and explosion pressure, the cylinder liner, the main part of the engine, is often unable to transfer the temperature to the cooling water in time due to poor heat conduction during the use of the engine, causing high temperature in the cylinder liner and even the engine. This high temperature environment seriously affects the engine. The service life of the lubricating oil will further increase, which will cause failures such as cylinder scuffing, early wear, and cavitation to a certain extent.

Method used

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  • Cylinder sleeve and preparation method thereof
  • Cylinder sleeve and preparation method thereof
  • Cylinder sleeve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Mix carbon, silicon, phosphorus, sulfur, manganese, copper, lead and iron, and accurately weigh each raw material for melting. The melting temperature is 1460-1480°C. After melting, stand at high temperature for 15 minutes to make copper, manganese and other alloying elements Fully dissolved in the alloy liquid.

[0046] The above alloy liquid is prepared by a water-cooled metal mold centrifugal casting process to obtain a blank, which is poured using a single-station centrifugal pouring machine. Primary inoculation treatment (inoculant consumption 0.6wt%); then transfer to the fire pouring spoon for secondary inoculation, the bottom of the fire pouring spoon is placed with silicon strontium inoculant (inoculant consumption 0.2wt%), pouring after inoculation is completed, pouring The temperature is 1430°C-1450°C, the speed of the pouring machine is 1200 rpm, the thickness of the mold coating is 0.6mm, the mold preheating temperature is 260°C, the water supply time is 19...

Embodiment 2

[0063] Mix carbon, silicon, phosphorus, sulfur, manganese, copper, lead and iron, and accurately weigh each raw material for melting. The melting temperature is 1450-1470°C. After melting, stand at high temperature for 15 minutes to make copper, manganese and other alloying elements Fully dissolved in the alloy liquid.

[0064] The above-mentioned alloy liquid is prepared by a water-cooled metal mold centrifugal casting process to obtain a blank; a single-station centrifugal pouring machine is used for pouring, and the alloy liquid after standing is first poured into a large ladle, and a silicon-barium inoculant is placed at the bottom of the large ladle. Primary inoculation treatment (inoculant dosage 0.6wt%); then transfer to the fire ladle for secondary inoculation, place silicon strontium inoculant (inoculant dosage 0.2wt%) at the bottom of the fire ladle, and then pour, pouring temperature 1430°C ~1450°C, pouring machine speed 1200 rpm, mold coating thickness 0.6mm, mold ...

Embodiment 3

[0076] Mix carbon, silicon, phosphorus, sulfur, manganese, copper, lead and iron, and accurately weigh each raw material for melting. The melting temperature is 1450-1470°C. After melting, stand at high temperature for 15 minutes to make copper, manganese and other alloying elements Fully dissolved in the alloy liquid.

[0077] The above-mentioned alloy liquid is prepared by a water-cooled metal mold centrifugal casting process to obtain a blank; a single-station centrifugal pouring machine is used for pouring, and the alloy liquid after standing is first poured into a large ladle, and a silicon-barium inoculant is placed at the bottom of the large ladle. Primary inoculation treatment (inoculant dosage 0.6wt%); then transfer to the fire ladle for secondary inoculation, place silicon strontium inoculant (inoculant dosage 0.2wt%) at the bottom of the fire ladle, and then pour, pouring temperature 1430°C ~1450°C, pouring machine speed 1200 rpm, mold coating thickness 0.6mm, mold ...

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Abstract

The invention provides a cylinder sleeve. The cylinder sleeve comprises the following components including, by weight, 2.3%-3.0% of C, 1.5%-2.5% of Si, 0%-0.15% of P, 0.05%-0.1% of S, 2.1%-3.0% of Mn,3.5%-4.0% of Cu, 0.05%-0.1% of Pb and the balance Fe. According to the cylinder sleeve, the cylinder sleeve prepared through a cylinder sleeve formula adopting the specific components has high tensile strength and elastic modulus, good thermal conductivity and good corrosion resistance, and the inner wall wear surface has good wear resistance, abrasion reduction and thermal fatigue resistance; moreover, the component composition and the production process of the cylinder sleeve are simple, and the cost is low; and the cylinder sleeve can effectively reduce the frequency of cylinder sleeve replacing due to failures caused by wear, corrosion, thermal fatigue and the like, so that the service life of the cylinder sleeve is prolonged, and the production cost of the cylinder sleeve is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of engine accessories, in particular to a cylinder liner and a preparation method thereof. Background technique [0002] With the continuous increase of engine power and explosion pressure, the cylinder liner, the main part of the engine, is often unable to transfer the temperature to the cooling water in time due to poor heat conduction during the use of the engine, causing high temperature in the cylinder liner and even the engine. This high temperature environment seriously affects the engine. It will further increase the oil consumption of lubricating oil, and cause failures such as cylinder scuffing, early wear, and cavitation to a certain extent. Therefore, how to make the cylinder liner have high thermal conductivity, high tensile strength, elastic modulus, and good cavitation resistance, significantly reduce the frequency of cylinder liner failure due to high temperature wear, corrosion, and thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/16C22C38/60B22D13/00C21D1/18C21D1/607C21D9/00C22C33/04
CPCB22D13/00C21D1/18C21D1/607C21D9/0068C22C33/04C22C38/02C22C38/04C22C38/16C22C38/60
Inventor 张亮亮邹悟会秦小才殷国庆
Owner ZYNP GRP
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