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The manufacturing method of gcr15 ring gauge which is beneficial to reduce the weight of the ring gauge

A manufacturing method and ring gauge technology, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., to achieve the effects of easy grip, weight reduction, and uniform distribution of carbides

Active Publication Date: 2019-03-05
CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The GCr15 ring gauge manufacturing method that is conducive to reducing the weight of the ring gauge includes sequential blanking, mechanical processing, heat treatment, end face processing, and inner and outer circle fine grinding. The mechanical processing includes sequential blank side annular groove turning, ring Groove brass filling, brass steel word stamping, blank inner circle and outer circle processing, the material of the blank is GCr15, and a spheroidizing annealing step is also included before the annular groove turning process, the spheroidizing annealing is heating the blank Keep the temperature at 785°C-800°C for not less than 3 hours, and cool in the furnace to 600°C to 700°C. The heat treatment includes high-temperature quenching and low-temperature tempering in sequence. The high-temperature quenching is to heat the blank obtained by the above-mentioned furnace cooling to 845°C to any value in the range of 865°C, the high-temperature quenching time is n...

Embodiment 2

[0022] This embodiment is further limited on the basis of Example 1. In order to form a friction-reducing layer and an anti-corrosion layer with self-lubricating properties on the outside of the ring gauge, to further ensure the service life of the ring gauge obtained in the present invention, the inner and outer The round fine grinding step is followed by a phosphating step.

[0023] The phosphating treatment step is to place the product obtained in the inner and outer circle grinding steps in a phosphating solution whose ratio of free acidity to total acidity is 1: (9-10), and the temperature of the phosphating solution is 60°C In the range of 70°C, the phosphating time is 13 to 20 minutes.

[0024] The phosphating treatment step is to place the product obtained in the inner and outer circle grinding steps in a phosphating solution whose ratio of free acidity to total acidity is 1: (10-12), and the temperature of the phosphating solution is 50°C In the range of 60°C, the ph...

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PUM

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Abstract

The invention discloses a GCr15 ring gauge manufacturing method beneficial to reducing the weight of a ring gauge. The method includes the processes of workblank blanking, machining, heat treatment, end face machining and fine grinding on an inner circle and an outer circle in sequence. The machining process sequentially includes the steps that an annular groove in the side face of a workblank is turned, the annular groove is filled with brass, brass steel letters are printed, and the inner circle and the outer circle of the workblank are machined. The workblank is made of GCr15 materials. Spheroidizing annealing is carried out before the annular groove is turned. The heat treatment process includes the steps of high-temperature quenching and low-temperature quenching in sequence. The workblank is forged after blanking is carried out and before machining is carried out. By means of the process, the ring gauge which is lighter, longer in service life and more convenient to use is obtained conveniently, the detection cost of a piston ring is lowered, and the detection accuracy, reliability and efficiency of the piston ring are facilitated.

Description

technical field [0001] The invention relates to a manufacturing process of a measuring tool used for size detection, in particular to a manufacturing method of a GCr15 ring gauge which is beneficial to reducing the weight of the ring gauge. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00C21D1/18C21D1/32C21D9/00
CPCB23P15/00C21D1/18C21D1/32C21D9/40
Inventor 吴光武
Owner CHENGDU ZHIRONG ZHICHUANG INTPROP MANAGEMENT CO LTD