Ceramic sliding vane

Abstract

The invention provides a ceramic sliding vane for a rotary compressor. The ceramic sliding vane comprises a sintered body and a stabilizer, wherein the sintered body comprises 50-94.5% of aluminum oxide and 5.0-40% of Fe-Al intermetallic compound by weight; and the stabilizer accounts for 0.5-10% by weight of the ceramic sliding vane. The ceramic sliding vane provided by the invention has not only high hardness and good corrosion resistance but also very low friction coefficient, so that the ceramic sliding vane used in a sealed rotary compressor can obtain good abrasion performance and reduce the abrasion and friction losses between the sealed rotary compressor and a sealed rotary compressor cylinder or a rolling piston matched with the sealed rotary compressor.

Description

technical field [0001] The invention relates to a ceramic slide, in particular to a ceramic slide for a rotary compressor. Background technique [0002] It is usually suitable for sealed rotary compressors of household appliances such as air conditioners and refrigerators. The outer peripheral surface of the eccentric part driven by the motor to rotate the crankshaft is equipped with a freely rotating rolling piston that rolls eccentrically around the cylinder, so that the arc end of the slide plate is tightly pressed. The outer surface of the rolling piston is always in contact with the outer surface of the rolling piston, and the cylinder is divided into a suction chamber and a compression chamber. The rotation of the crankshaft drives the rolling piston to rotate, and at the same time drives the sliding vane to reciprocate in the sliding vane groove, and the cylinder repeats the working process of suction, compression, exhaust and clearance expansion. [0003] The slidin...

AI Technical Summary

Problems solved by technology

Due to the application of new refrigerants (that is, the use of chlorine-free refrigerants HFC such as R134a, R125, etc.), the lubrication characteristics of the high-speed alloy steel sliding vanes of the compressor refrigerant will deteriorate, resulting in alloy steel sliding vanes and rolling The wear of the contact surface of the piston is further aggravated, and the wear resistance and corrosion resistance of the alloy steel sliding plate have been difficult to meet the needs of the development of the compressor

[0004] In order to solve the above problems, people use zirconia as the base material to make slides. The main problems are: on the one hand, the production cost of ceramic slides made of zirconia and zirconia-based composite ceramic materials is relatively low. On the other hand, when zirconia and zirconia-based composite ceramic materials are used for a long time in the temperature range of 100 to 400 ° C, micro- or macro-cracks are prone to occur on the surface of low-temperature aging, resulting in a significant decline in the mechanical properties of the material

There are certain limitations in the current anti-aging measures, the overall anti-aging will often affect the overall performance of the material, and because the surface anti-aging process measures are complicated, resulting in high costs, resulting in restrictions on its application

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