A kind of preparation method of low heat dissipation motorcycle engine

Abstract

The invention relates to a low-heat-dissipation motorcycle engine manufacturing method. The manufacturing method includes the following steps that a piston, an air cylinder cover and an air cylinder body of an engine are subject to ultrasonic cleaning, and a spraying zone is subject to sand blasting through No.40 corundum gravels after washing is finished; a low temperature high velocity flame spraying is adopted for spraying the top surface of the piston and the inner surface of the air cylinder cover to form NiCoCrAlYTa bonding layers, and atmospheric plasma spraying is adopted for spraying the outer surface of the air cylinder body to form a NiCrAl bonding layer; and after the bonding layers are formed through spraying, the top surface of the piston, the inner surface of the air cylinder cover and the outer surface of the air cylinder body are subject to 7YSZ ceramic layer atmosphere plasma spraying. By means of the manufacturing method, through compounding of a ceramic material and a metal material, advantages of the two kinds of materials can be integrated, the defect that in the prior art, a view is given to manufacture pure ceramic engine parts is overcome, and therefore a motorcycle engine which is low in cost, high in heat isolation, resistant to oxidation, resistant to corrosion and long in service life is obtained.

Description

technical field [0001] The invention relates to the technical field of motorcycle engine surface treatment, in particular to a method for preparing a low-radiation motorcycle engine. Background technique [0002] Low heat dissipation engine has always been a research hotspot in the motorcycle engine industry. Low heat dissipation technology is a high-tech in a multidisciplinary field. One of the difficulties lies in the selection of engine preparation technology and materials used. The engine is the heart of the motorcycle, and the development of the motorcycle is closely related to the progress of the engine. As society progresses day by day, motorcycle engines must face the challenges of low carbon emissions and energy saving and fuel reduction, so low heat dissipation engines are the future development trend. At present, the development direction of the engine is mainly towards high power, high speed, low fuel consumption, and low emission. With the gradual improvement o...

AI Technical Summary

Problems solved by technology

[0005] There are several problems in the existing low heat dissipation motorcycle thermal insulation coating: first, the existing low heat dissipation engine focuses on the preparation of pure ceramic parts, and pure ceramic parts have disadvantages such as poor thermal shock performance and high cost, which are difficult to meet Batch production; Second, when some low heat dissipation engines are preparing heat-insulating coatings, due to technical limitations, only the pistons in the engine are coated with heat-insulating coatings, and the cylinder head and cylinder block are not coated at the same time. Therefore, The heat insulation effect of the engine is limited; the third is that when the existing technology is used to coat the piston with a heat insulation coating, the choice of coating material is unreasonable, and the preparation method is not appropriate. For example, when preparing MCrAlX alloy material as a transition layer, the alloy coating is more oxidized. Severe, causing the ceramic layer to peel off easily during service