Study on Friction Reduction and Anti-Scuffing Technology of Duplex Ion Nitrocarburizing and Sulphurizing

2008 ◽  
Vol 373-374 ◽  
pp. 476-479 ◽  
Author(s):  
C.H. Hu ◽  
Shi Ning Ma ◽  
Yu Lin Qiao ◽  
J.P. Zou ◽  
Y.D. Gao ◽  
...  
Keyword(s):  
Surface Layer ◽  
Diesel Engine ◽  
New Technology ◽  
Friction Reduction ◽  
Bench Test ◽  
Wear Volume ◽  
Engine Cylinder ◽  
Nitrocarburized Layer ◽  
Alloy Cast Iron ◽  
Alloy Cast

A new technology, duplex ion nitrocarburizing and sulphurizing technology (DINS), for friction reduction and anti-scuffing applications of diesel engine cylinder was studied. Duplex ion nitrocarburized-sulphurized layer was prepared on the surface of CrMoCu alloy cast iron by using the DINS process. The morphology, phase structure and tribological behaviors under sulphur contained additive lubrication were investigated. Results show that the sulphide surface layer of the duplex layer is mainly composed of close-packed hexagonal structured FeS phase and cubic structured FeS2 phase. The nitrocarburized sub-surface layer of the duplex layer is mainly composed of Fe2C and Fe3N phases. The harder nitrocarburized layer can provide effective support to the softer sulphide layer and avoid its lamellar tear. The synergistic effect between the duplex layer and the sulphur contained additive lubricant, resulted in 10% and 33.3% reduction in coefficient of friction and wear volume, respectively, compared with those of the sulphurized surface, and 25% and 50.1% reduction, respectively, compared with those of the plain surface. Bench test of diesel engine further demonstrated that the DINS process can provide the treated cylinder with superior properties in anti-scuffing and friction reduction, so that it can be used to prolong the service life of the cylinder.

Tribological Performances of Active Screen Ion Sulphurized Layer under Epinoc Grease Lubricating

2012 ◽  
Vol 472-475 ◽  
pp. 2854-2858
Author(s):  
Chun Hua Hu ◽  
Feng Jiang ◽  
Zhen Duo Zheng ◽  
Jun Cao ◽  
Yu Lin Qiao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Friction Reduction ◽  
Wear Volume ◽  
Grease Lubrication ◽  
Lubrication Condition ◽  
Plain Surface ◽  
Alloy Cast Iron ◽  
Alloy Cast ◽  
Active Screen

The active screen ion sulphurized layer was prepared on the surface of CrMoCu alloy cast iron by using active screen ion sulphurizing technology. Its key composition is FeS. Under epinoc grease lubrication condition, the friction factor and the wear volume of the active screen ion sulphurized layer is 24% and 40% lower than that of the plain surface and close to that of the sulphurized layer, respectively. The active screen ion sulphurized layer has excellent self-lubrication property, and its loose and porous structure tending to store the grease, which make it possess excellent friction reduction and wear resistance performances.

Study on Friction Reduction and Wear Resistance Process and Composition of FeS Solid Lubrication Duplex Layer

2012 ◽  
Vol 502 ◽  
pp. 60-66 ◽  
Author(s):  
Chun Hua Hu ◽  
Jia Ping Zou ◽  
Jiu Juan Qian ◽  
Ding Yun Jin ◽  
Xiao Feng Sun
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Diffusion Layer ◽  
Steel Surface ◽  
Friction Reduction ◽  
Solid Lubrication ◽  
Wear Volume ◽  
Load Bearing Capacity ◽  
Lubricating Property ◽  
Plain Surface

The composition of FeS solid lubrication duplex layer on 45 steel surface was studied by using SEM, EDS, AES and XPS. The results show that the sulphurized surface layer of FeS solid lubrication duplex is composed of the sulphide aggradation layer deposited on the nitrocarburized sub-surface layer and the sulphide diffusion layer formed by some S element infiltrating the nitrocarburized surface. The sulphide aggradation layer is mainly composed of FeS and FeS2, the key composition of the sulphide diffusion layer is FeS, and Fe(2/3/4)N is the key composition of the nitrocarburized sub-surface layer. The result of friction reduction and wear resistance test combined with the composition of FeS solid lubrication duplex layer explains that the friction coefficient and wear volume of the duplex layer are lower than those of the plain surface, which attribute to the relatively softer sulphurized surface layer provided self-lubricating property while the harder nitrocarburized sub-surface layer provided sufficient load bearing capacity in view of resistance to plastic deformation, so that spallation failure of the sulphurized surface layer can be effectively avoided, and they exert excellent friction reduction and wear resistance functions in different moments during rubbing process respectively.

Experimental Study and Analysis of Lubricants Dispersed With Nanodiamond Particles on Diesel Engine

2014 ◽  
Vol 5 (4) ◽  
Author(s):  
Hao Liu ◽  
Minli Bai ◽  
Jizu Lv ◽  
Liang Zhang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Thermal Conduction ◽  
Dynamic Performance ◽  
Engine Performance ◽  
Friction Reduction ◽  
Bench Test ◽  
Friction Machine ◽  
Transmission Electron ◽  
Antiwear Properties ◽  
Desirable Effect

Limitations in energy crisis and environment protection promote the development of engine lubricants. By friction machine and AVL diesel engine bench, the present investigation studies the tribological properties and dynamic performance of diesel engine with lubricants of commercial quality dispersed with different mass concentrations of nanodiamond particles. Reverse dragging process tests and mapping characteristics tests were brought in the bench test. Additionally, investigations were conducted using viscometer, thermal conductivity meter, scanning electron microscopy (SEM), and transmission electron microscope (TEM) to interpret the possible influence mechanisms of tribology and thermal conduction with nanodiamond particles. The friction machine experimental results show that lubricants dispersed with nanodiamond particles exhibit good friction-reduction and antiwear properties. The engine bench tests indicate that it has a desirable effect on engine performance, decreasing the mechanical loss while increasing fuel economy.

TYPE 1 NI-RESIST

Alloy Digest ◽  
1989 ◽  
Vol 38 (12) ◽  
Keyword(s):  
Cast Iron ◽  
Physical Properties ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Austenitic Alloy ◽  
Continuously Cast ◽  
Alloy Cast Iron ◽  
Alloy Cast

Abstract Type 1 Ni-Resist Dura-Bar is a corrosion resistant austenitic alloy cast iron, continuously cast. It has less than 10% alloy carbides, well dispersed and fine graphite flakes. It is non magnetic. This datasheet provides information on composition, physical properties, microstructure, and elasticity. It also includes information on heat treating. Filing Code: CI-60. Producer or source: Federal Bronze Products Inc..

Effect of instantaneous rotational speed on the analysis of measured diesel engine cylinder pressure data

2012 ◽  
Vol 60 ◽  
pp. 87-95 ◽  
Author(s):  
Antonis K. Antonopoulos ◽  
Dimitrios T. Hountalas
Keyword(s):  
Diesel Engine ◽  
Rotational Speed ◽  
Cylinder Pressure ◽  
Pressure Data ◽  
Engine Cylinder

Evaluation of temporal and spatial distribution of nanometric particles in a diesel engine by broadband optical techniques

2002 ◽  
Vol 3 (2) ◽  
pp. 93-101 ◽  
Author(s):  
F E Corcione ◽  
S S Merola ◽  
B M Vaglieco
Keyword(s):  
Diesel Engine ◽  
Ultrafine Particles ◽  
Combustion Process ◽  
Visible Region ◽  
Diesel Combustion ◽  
Temporal And Spatial Distribution ◽  
Optical Techniques ◽  
Engine Cylinder ◽  
Nanometric Particles ◽  
Temporal And Spatial

In the last few years, there has been an increasing concern about the emissions of ultrafine particles in the atmosphere. A detailed study of the formation and oxidation of these particles in the environment of the diesel engine cylinder presents many experimental difficulties due to the high temperatures, pressures and extremely reactive intermediate species. To allow investigation of the different phases of the diesel combustion process, high temporal and spatial resolution optical techniques were applied in the optically accessible chamber of a diesel engine at fixed engine speed and air-fuel ratio. Simultaneous extinction, scattering and flame chemiluminescence measurements from the ultraviolet to the visible region were carried out in order to study the diesel combustion process from the soot inception to the formation of soot particles, through the growth of their precursors. These species were characterized as carbonaceous nanometric structures and their sizes were evaluated by the Mie theory.

FINISHING STRENGTHENING PNEUMO-CENTRIFUGAL PROCESSING OF DIESEL ENGINE CYLINDER LINERS

2018 ◽  
pp. 18-27
Author(s):  
Anatoly Petrovich Minakov ◽  
Elena Valeryevna Ilyushina ◽  
Aleksey Viktorovich Bernadsky ◽  
Olga Aleksandrovna Bernadskaya
Keyword(s):  
Diesel Engine ◽  
Engine Cylinder ◽  
Cylinder Liners
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