Air cylinder liner used for Stirling engine and processing process for air cylinder liner

Abstract

The invention provides an air cylinder liner used for a Stirling engine, and performance of an air cylinder body is greatly improved. The air cylinder liner consists of the following components in percentage by mass: less than or equal to 0.03% of C, 4.5-6.5% of Ni, 3.0-3.5% of Mo, 22-23% of Cr, less than or equal to 0.03% of P, less than or equal to 0.02% of S, less than or equal to 2.00% of Mn, less than or equal to 1.00% of Si, 0.14-0.20% of N and the balance Fe. Meanwhile, the invention further provides a processing process for the air cylinder liner; and the process is simple, and equipment investment is less, so that manufacturing cost is reduced and a processing period is shortened.

Description

technical field [0001] The invention relates to the technical field of a Stirling engine, in particular to a cylinder liner for a Stirling engine and a processing technology thereof. Background technique [0002] The Stirling engine is a closed-cycle piston engine with external heating. The closed cylinder of the Stirling engine is filled with a certain volume of working fluid. The upper part of the piston in the cylinder is a hot chamber, and the lower part of the piston in the cylinder is a cold chamber. The hot chamber mainly plays the role of expansion, and the cold chamber mainly plays the role of compression, driving the piston to do work. [0003] The cylinder liner, the cylinder head and the piston together constitute the working space of the cylinder, which is the lead of the reciprocating motion of the piston, and is cooled by cooling water outside. destroy. [0004] Existing cylinder liners are generally produced and processed using wear-resistant alloy cast iro...

AI Technical Summary

Problems solved by technology

[0005] 1. There are many processes, and a variety of mechanical equipment is required, such as lathes, boring machines, internal grinding, external grinding and honing machines, so the production cycle is long and the manufacturing cost is high;

[0006] 2. The corrosion resistance of materials such as cast iron or structural steel is poor, and the surface layer of the cooling medium is easily corroded, fatigued and cracked, so the service life is short;