CN204918771U

CN204918771U - Gas nitriding + PVD composite biocoating piston ring

Info

Publication number: CN204918771U
Application number: CN201520535260.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-18
Filing date: 2015-07-18
Publication date: 2015-12-30
Anticipated expiration: 2025-07-18

Abstract

The utility model provides a gas nitriding + PVD composite biocoating piston ring. The engine is that the power consumption is maximum at present as vehicle's core component, the biggest power product of abandonment emission. And what of the effective power of engine size and the harmful gas that discharges have played most important effect to the utilization and the environmental control of the social energy. Consequently, traditional piston ring of past far can not adapt to the requirement of this kind of high performance of present engine high abrasion, low emission. Disclose a gas nitriding + PVD composite biocoating piston ring for this reason. This kind of piston ring comprises base ring (1), first a sclerosis layer (2) of nitration case and a nitration case second sclerosis layer (3) and PVD coating (4).

Description

A kind of gas nitriding+PVD composite coating piston ring

Technical field:

The utility model belongs to motor car engine important spare part piston ring, and it is specifically related to a kind of gas nitriding+PVD composite coating piston ring.

Background technology:

As everyone knows, along with automobile volume of production and marketing constantly rises, auto Parts Industry is also risen thereupon, and must meet the automobile production industry of increasingly sharpening, be exactly after market subsequently.Manufacture all kinds of resource transition of motor car engine consumption useless, environment for human survival is polluted day by day, also day by day becomes the obstacle of modernization, also result in the great attention of countries in the world and expert at different levels.Resource reasonable development effectively utilizes and refer to most important position in important process schedule and human setting house evolutionary operation(EVOP) with environmental purification by national governments equally.Engine, as the core component of the vehicles, is consume energy total amount at present at most, the power product that discharge amount of exhaust gas is maximum.And the number of effective working efficiency size of engine and the obnoxious flavour of discharge serves vital effect to the utilization of the social energy and environmental Kuznets Curves.For this reason, countries in the world have put into effect engine emission standard all in succession, and Environmental Protection in China general bureau has also promulgated mandatory emission standard.Therefore passing by traditional piston ring far can not adapt to the requirement of this high-performance of current engine, high abrasion, low emission.Want to meet above-mentioned performance and require just must adopt high performance alloys material, prices are rather stiff at present for these high performance alloys materials, and such high performance alloys material resources is also very deficient, can not meet actual growing engine production demand.Effectively can be improved the hardness of piston ring working-surface by the piston ring of gas nitriding+PVD compound coating process, thus improve piston ring wear resistance and emission behavior thereof.

Summary of the invention

Technical solutions of the utility model, can improve the wear resistance of piston ring, solidity to corrosion, effectively reduce the discharge of automobile;

For achieving the above object, piston ring basic circle good for coiling is carried out pre-treatment by nitrogenize requirement, then gas nitriding is carried out, carry out after gas nitriding repairing mouth, cross grinding, cylindrical grinding, the oxide film produced during removing piston ring nitrogenize, and require that roughness of excircle reaches PVD technical finesse requirement;

In such scheme, this gas nitriding+PVD composite coating piston ring process of surface treatment, not only increases the work-ing life of engine, brings considerable economic benefit and social benefit simultaneously.

Accompanying drawing explanation

Fig. 1 is a kind of gas nitriding+PVD of the utility model composite coating piston ring process of surface treatment structural representation

Embodiment

A kind of gas nitriding+PVD composite coating piston ring is used to be described in further detail below in conjunction with accompanying drawing to this, this composite coating piston ring is by basic ring (1), and nitride layer first hardened layer (2) and nitride layer second hardened layer (3) and PVD coating (4) are formed;

A kind of gas nitriding+PVD of the technical program composite coating piston ring machining path is: shaping steel wire, and---around basic ring,---------------deoiling,---------------cylindrical lapping---deoils and---dries---PVD process---post-treatment to be shaped face grinding otch to repair mouth in gas nitriding in oven dry in pickling in setting in destressing.This composite coating piston ring effectively can improve its working-surface hardness; the discharge of wear resistance, solidity to corrosion, reduction engine; for environment for human survival serves certain provide protection, improve the economic benefit of engine, also for society brings huge social benefit simultaneously.

Claims

1. its structure of gas nitriding+PVD composite coating piston ring is primarily of basic ring (1), and nitride layer first hardened layer (2) and nitride layer second hardened layer (3) and PVD coating (4) are formed.