Cylinder sleeve casting technology

A casting process and cylinder liner technology, applied in the field of cylinder liner casting process, can solve the problems affecting the service life of the engine, abrasive wear, etc., and achieve the effects of good oil storage capacity, improved wear resistance, and refined metallographic structure

Inactive Publication Date: 2014-11-19
无锡柯马机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the deteriorating environment, in most parts of my country, especially the northern and central western regions, the sand and dust are relatively large, and the hard particles are easily sucked into the engine cylinder, causing abrasive wear and seriously affecting the service life of the engine.

Method used

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Examples

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Embodiment

[0009] Example: A cylinder liner casting process, first process Ti and Sb into synthetic particles of 2-3mm for later use; then the alloy is melted in proportion, among which C3.8%; Si 2.0%; Mn 1.5%; P 0.4%; S 0.09%; Cu 2.2%; Cr 0.45%; Fe 89.56%, when the smelting temperature reaches 1550°C, add synthetic particles in proportion, of which Ti 0.45%, Sb 0.4%, the particles are added and purified for 6 minutes, and then inoculated twice. Inoculate the inoculant in the large bag first, and then in the pouring bag; the pouring temperature is 1380°C~1320°C; the pouring speed is 2kg / s; the cooling intensity is water cooling for 180 seconds; Quenching in solution transforms the metallographic structure of the cylinder liner into lower bainite.

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PUM

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Abstract

The invention discloses a cylinder sleeve casting technology. Ti and Sb are processed into compound particles; materials are blended proportionally and smelted into an alloy; inoculation is performed twice, that is, an inoculant is inoculated first in a bale and then in a casting ladle; casting and quenching treatments are performed. According to the cylinder sleeve casting technology, Ti and Sb compound particles are dispersed uniformly, a cylinder sleeve has a compact texture and is good in thermal stability, the process is simple, the cost is low, industrialized production is easy to implement, and the wear resistance is enhanced. Inoculation is performed twice to refine the metallographic texture further and enhance the mechanical property.

Description

technical field [0001] The invention relates to a cylinder liner casting process. Background technique [0002] Due to the deteriorating environment, in most areas of my country, especially the northern and central western areas, the dust is relatively large, and the hard particles are easily sucked into the engine cylinder, causing abrasive wear and seriously affecting the service life of the engine. [0003] The cylinder is the core part of the engine, the space where the gas is compressed, burned and expanded, and the trajectory that the piston moves. The highest instantaneous temperature during the combustion process is as high as 2200-2400°C, and the highest instantaneous pressure is as high as 12-14MPa. The inner wall of the cylinder liner is directly affected by high temperature, high pressure, and melting. The abrasive wear is increased under the working conditions, which further shortens the service life of the engine. [0004] The cylinder liner is one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08B22D1/00C21D5/00
Inventor 孙建新
Owner 无锡柯马机械有限公司
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