Effect of different amounts of graphene on metal friction and wear during the mixing process

2021 ◽  
Author(s):  
Deshang Han ◽  
Kongshuo Wang ◽  
Huiguang Bian ◽  
Gang Yan ◽  
Chuansheng Wang

2021 ◽  
pp. 51408
Author(s):  
Deshang Han ◽  
Yi Pan ◽  
Junxiu Xue ◽  
Benhui Yu ◽  
Gang Yan ◽  
...  




2021 ◽  
Author(s):  
Deshang Han ◽  
Shuang Li ◽  
Xinxin Xiao ◽  
Minghui Xu ◽  
Yihui Chen ◽  
...  


Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4029
Author(s):  
Yiren Pan ◽  
Lin Zhu ◽  
Huaqiao Liu ◽  
Meng Zhang ◽  
Wenwen Han ◽  
...  

In order to obtain a longer mixing chamber life, a layer of hard alloy coating is generally welded on the surface. However, when the mixing chamber is used for a long time, the surface will be worn due to friction with small fillers and rubber. As a result, there will be a large gap between the mixing chamber and the rotor, which will further affect the quality of the mixed rubber. In this paper, the dispersion process of the reinforcing system is simulated at first, and the mixed rubber samples are obtained from different dispersion stages in preparation for experiments with the chamber material. On this basis, the friction experiment is carried out with the same material as the mixing chamber on the friction experiment machine employed in the improved test part. The experiment shows that the friction and wear between the mixture and metal produced in each mixing stage are different. The wear in the stage with high friction is not necessarily large. The wear will be intensified in the middle and later mixing periods, while the friction will tend to be stable. In this paper, besides the exploration on the friction of fillers and rubber on the mixing chamber in different mixing stages, the most important thing is to change the mixing process of rubber formula, so as to extend the service life of the mixing chamber without changing the comprehensive physical properties of the mixing rubber.



2021 ◽  
pp. 50761
Author(s):  
Deshang Han ◽  
Shoufeng Zhang ◽  
Kongshuo Wang ◽  
Yi Pan ◽  
Donglin Zhu ◽  
...  


Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1071
Author(s):  
Yiren Pan ◽  
Deshang Han ◽  
Lin Zhu ◽  
Meng Zhang ◽  
Huiguang Bian ◽  
...  

The gap between the rotor and the mixer chamber wall is an important factor in determining filler dispersion in rubber compounds. The inner wall of a mixer will wear after working for a long time, which will cause poor filler dispersion and affect the quality of rubber products. In this study, MoDTC was added to carbon black as a kind of filler, and the effect on filler dispersion, the properties of the rubber product, and the friction and wear of rubber and metal in the mixing process were examined. Experimental data showed that after adding 3 phr of MoDTC, carbon black dispersion was greatly improved, the curing time was shortened, and the performance remained stable. It was also found that the Mo element of the compound with 3 phr MoDTC dispersed better than that of the other compounds. Most importantly, adding 3 phr of MoDTC greatly reduced the amount of wear on the metal during the mixing process. However, the opposite effect occurred when the MoDTC content was high. The method proposed in this study can not only improve filler dispersion in rubber but also reduce metal wear to prolong the service life of the mixing chamber when applied to an actual mixing process.



Author(s):  
Marian Szczerek ◽  
Jacek Przepio´rka

The paper presents a new approach to optimization of the metal-polymer tribological characteristics based on correlation between the total sum of polar component values of surface free energy tribological characteristics (wear and friction) of rubbing materials. The authors predict that research of friction and wear mechanism of modified friction joints should make possible to generalize the principles of rational selection of manufacturing technology of polymer-metal friction joints.



2008 ◽  
Vol 373-374 ◽  
pp. 452-455 ◽  
Author(s):  
Yang Zhao ◽  
Bin Shi Xu ◽  
Yi Xu ◽  
Pei Jing Shi ◽  
Xiao Li Wang ◽  
...  

Tribological properties of silicate particles as 50CC additive were evaluated on an end-face friction and wear tester. The morphologies, element distributions and micro-mechanical properties of the worn surface were investigated by means of scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and nanoindentation tester, respectively. Results indicate that friction reduction and wear resistance properties of 50CC are improved effectively by adding silicate particles, whose main composition is Mg3[Si2O5](OH)4. The friction coefficient and surface temperature are reduced 60.6% and 35.6%. The nano-hardness of the self-repairing film is increased 30.03% compared with that of the ordinary film. It can be inferred that a high nano-hardness protective film composed of Mg, Al and O is formed on the worn surface, which has a good effect on the tribological performances.



2010 ◽  
Vol 97-101 ◽  
pp. 1459-1462 ◽  
Author(s):  
Wen Gang Chen ◽  
Yu Zhou Gao ◽  
Hui Chen Zhang ◽  
Ze Fei Tan

The characteristics of the 1045 steel pairs using serpentine particles as grease lubricant additive were investigated by an AMSLER friction and wear tester. The surface topographies and composition of the worn surface of 1045 steel rings were identified by SEM and XPS. The results show that the additives can form a self-repairing film on the worn metal surface. It can reduce the abrasion of the friction pairs significantly. The main elemental compositions of the film are Fe, O, Si, C and Mg, which indicates that the additives directly take part in the formation of the self-repairing film.



Author(s):  
D.I. Potter ◽  
M. Ahmed ◽  
K. Ruffing

Ion implantation, used extensively for the past decade in fabricating semiconductor devices, now provides a unique means for altering the near-surface chemical compositions and microstructures of metals. These alterations often significantly improve physical properties that depend on the surface of the material; for example, catalysis, corrosion, oxidation, hardness, friction and wear. Frequently the mechanisms causing these beneficial alterations and property changes remain obscure and much of the current research in the area of ion implantation metallurgy is aimed at identifying such mechanisms. Investigators thus confront two immediate questions: To what extent is the chemical composition changed by implantation? What is the resulting microstructure? These two questions can be investigated very fruitfully with analytical electron microscopy (AEM), as described below.



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