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Oil injection nozzle orifice quenching process

A processing technology and fuel injection nozzle technology, which is applied in the field of fuel injection nozzle nozzle hole quenching processing technology, can solve the problems that the fuel injection nozzle processing technology cannot meet the requirements, cannot meet high-end customers, and affect the performance of the engine, so as to achieve processing accuracy and stability. High performance, improve processing efficiency, and improve the effect of yield

Inactive Publication Date: 2016-12-14
南京明杰科技有限公司
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  • Summary
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AI Technical Summary

Problems solved by technology

[0002] As one of the key components of the engine, the fuel injector will seriously affect the performance of the engine. With the increasingly stringent emission regulations, the processing requirements of the fuel injector in the fuel system are also getting higher and higher. The traditional injector The oil nozzle processing technology can no longer meet the requirements, and the existing processing methods have low processing accuracy and cannot meet the needs of high-end customers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A nozzle hole quenching process, comprising the following steps:

[0024] (1) Positioning and clamping: place the fuel injector on the injection hole machine tool, use positioning pins for spatial axial positioning, and clamp with a claw-shaped mechanism, the working range of which is -20-90°;

[0025] (2) EDM: The pulse frequency of the electrode wire is 130KHz, the discharge gap is 58% of the voltage, and the correction is performed, the correction length is 0.6mm, and the feed rate during EDM is 1 / 6 of the nozzle hole depth;

[0026] (3) Quenching treatment: Quenching treatment is carried out on the fuel injector after EDM, the treatment temperature is 180-210°, and then the oil is cooled to room temperature;

[0027] (4) Nozzle hole trimming: Remove the barbs from the electrode wire processed in step (2), and trim the quenched fuel injector in step (3). The gap is 60% voltage;

[0028] (5) Shifting and clamping: place the fuel injector processed in s...

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PUM

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Abstract

The invention discloses an oil injection nozzle orifice quenching process. The oil injection nozzle orifice quenching process comprises the steps of: (1) positioning and clamping; (2) electrosparking; (3) quenching; (4) orifice finishing; (5) displacement clamping; (6) extrusion grinding; and (7) inspection and screening. An oil injection nozzle manufactured by the process solves the machining difficulty of tiny orifice; and in addition, the electrosparking is high in precision and stability, and is applied to a production line to realize automation, so that the machining efficiency is improved, the yield is increased, and the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of fuel injection equipment, and in particular relates to a process for quenching nozzle holes of a fuel injection nozzle. Background technique [0002] As one of the key components of the engine, the fuel injector will seriously affect the performance of the engine. With the increasingly stringent emission regulations, the processing requirements of the fuel injector in the fuel system are also getting higher and higher. The traditional injector The oil nozzle processing technology has been unable to meet the requirements, and the existing processing methods have low processing accuracy and cannot meet the needs of high-end customers. Contents of the invention [0003] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a nozzle hole quenching process for fuel injectors. [0004] The purpose of the present invention is achieved through the ...

Claims

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Application Information

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IPC IPC(8): B23H5/00B23H5/04B23H9/14
CPCB23H5/00B23H5/04B23H9/14
Inventor 熊昆明
Owner 南京明杰科技有限公司
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