Method for manufacturing ring gauge convenient to use with GCr15 as base material

Abstract

The invention discloses a method for manufacturing a ring gauge convenient to use with the GCr15 as a base material. The ring gauge manufacturing method includes the step of blank blanking, the step of machining, the step of heat treatment, the step of end face machining and the step of inner and outer circle accurate grinding in sequence. The step of machining includes the blank side face ring-shaped groove turning, annular groove brass filling, brass steel letter printing, and blank inner circle and outer circle machining in sequence. The blank is made of the GCr15. The step of heat treatment includes high-temperature quenching and low-temperature tempering in sequence, the temperature of high-temperature quenching is any numerical value from 850 DEG C to 875 DEG C, the high-temperature quenching time is not less than 2 h, the tempering temperature of low-temperature tempering is any numerical value from 165 DEG C and 175 DEG C, and the low-temperature tempering time is not less than 3 h. The step of forging exists between the step of blank blanking and the step of machining. According to the technology, a ring gauge which is longer in service life and more convenient to use can be conveniently obtained, the detection cost of the piston ring can be easily reduced, and the detection precision, reliability and efficiency of the piston ring can be easily improved.

Description

technical field [0001] The invention relates to a manufacturing process of a measuring tool used for dimension detection, in particular to an easy-to-use ring gauge manufacturing method using GCr15 as a base material. Background technique [0002] As one of the key parts of the engine, the performance and quality of the piston ring directly affect various technical and economic indicators of the engine, and the closing gap of the piston ring is one of the main technical parameters affecting the sealing performance of the engine. Since the air leakage of engines of different types and structures through the closed gap of the piston ring is about 0.3% to 1.8% of the intake air, in order to reduce the air leakage, it is necessary to minimize the closed gap of the piston ring. In the existing standards It is generally stipulated that the maximum limit tolerance of the closed gap is 0.3mm. With the continuous improvement of engine performance, such as the supercharged engine who...

AI Technical Summary

Problems solved by technology

In the prior art, the main component used for piston ring size detection is the ring gauge. In the whole process from the piston ring profiling process to the finished product inspection, there are no other measuring tools for the process of using the ring gauge and the type of specifications of the ring gauge required. Comparable with it, good ring gauge quality is a solid foundation for guaranteeing the deviation of piston ring closed gap