Novel aluminium piston wearable collar and method for manufacturing piston

Abstract

The invention relates to an improved aluminum piston wear resisting inlaid ring and the method for making the piston using the wear resisting inlaid ring, wherein the wear resisting inlaid ring is used in the diesel engine piston, including a wear resisting inlaid ring and an internal cooling channel, the wear resisting inlaid ring and the internal cooling channel are in fixed connection through a support stand, the wear resisting inlaid ring connects with a combustion chamber larynx aperture guard ring through the support stand, the internal cooling channel is in fixed connection with the wear resisting ring through the support stand and they are cast into the piston body integrally. The invention realizes simplified structure and easy production.

Description

technical field [0001] The invention relates to an improved wear-resistant insert ring for an aluminum piston and a method for making a piston with the wear-resistant insert ring. Background technique [0002] In order to save energy and reduce consumption of the internal combustion engine, reduce exhaust emissions, and prolong the service life of the piston, it is necessary to set an internal cooling channel on the aluminum piston for cooling during the working process. At present, one method used in the manufacture of pistons with internal cooling channels is to weld a metal hollow ring on one side of the wear-resistant insert ring. The position of the internal cooling channel is limited and cannot be adjusted arbitrarily, so the parts that need to be cooled cannot be Obtain a good cooling effect, or take into account the cooling requirements of other cooling parts; another method is to fix the internal cooling channel of the non-metallic solid ring (usually a salt core or...

AI Technical Summary

Problems solved by technology

At present, one method used in the manufacture of pistons with internal cooling channels is to weld a metal hollow ring on one side of the wear-resistant insert ring. The position of the internal cooling channel is limited and cannot be adjusted arbitrarily, so the parts that need to be cooled cannot be Obtain a good cooling effect, or take into account the cooling requirements of other cooling parts; another method is to fix the internal cooling channel of the non-metallic solid ring (usually a salt core or sand core) on the piston mandrel, the positioning is not accurate, and it is easy to produce Displacement, deformation, cracking, high scrap rate, poor product quality, low production efficiency

[0003] At the same time, the piston with the throat retainer of the combustion chamber is usually cast into an integral casting by casting the throat retainer of the combustion chamber and the wear-resistant insert ring, and then placed in the piston mold and cast into the piston. , the metallographic structure of the wear-resistant insert ring and the throat retainer of the combustion chamber made by this method is coarse, easy to cause looseness and shrinkage, and the weight is large, which also affects the quality of the piston and increases the weight of the piston.

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