Results 31 to 40 of about 887 (177)

Relationship Between Micro‐Level Circular Economy and Sustainable Performance in the Metalworking Industry

Sustainable Development, EarlyView.
ABSTRACT The large multinational metalworking industry has increasingly adopted micro‐level circular economy (MLCE) practices; however, the extent to which these initiatives translate into sustainable performance remains insufficiently understood. This study examines the relationship between MLCE and economic, environmental, and social performance ...
Paulo Caracciolo, Plinio Centoamore, Thadeu Alfredo Farias Silva, Henrricco Nieves Pujol Tucci, Dirceu da Silva, Geraldo Cardoso de Oliveira Neto   +5 more
wiley   +1 more source

Lubrication Performance Analysis of RV Reducer Cycloid Tooth Profile Modification

Jixie chuandong, 2020
With the consideration of the thermal effect and piezo-viscous characteristic of lubricants， the numerical model of line contact elastohydrodynamic grease lubrication between cycloid gear and pin wheel is established， and the fully numerical solution of ...
Jun Wang, Zhilong Chen, Qunchao Chen, Wentao Li, Quan Wang, Daxing Zhao   +5 more
doaj  

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

steel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo, Anumoy Ganguly, Lucas Varoto, Tim M. Schwarz, Jean‐Baptiste Letz, Ubaid Manzoor, Laurine Choisez, Dierk Raabe, Isnaldi R. Souza Filho   +8 more
wiley   +1 more source

Evaluation of Lubricant Selection and Lubrication Intervals for Pin–Bushing Bearings Operating Under High-Temperature Conditions in Heavy-Duty Construction Machinery

Lubricants
Pin–bushing bearings in heavy-duty construction machinery operating in severe industrial environments are susceptible to accelerated wear, grease degradation, and lubrication failure, yet application-specific guidance for lubricant selection and re ...
Ilhan Celik, Abdullah Tahir Şensoy, Sevki Burak Sezer   +2 more
doaj   +1 more source

Comparative study on corrosion resistance and lubrication function of lithium complex grease and polyurea grease

Friction, 2019
In this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and polyurea as thickeners, respectively.
Guanlin Ren, Pengfei Zhang, Xiangyuan Ye, Wen Li, Xiaoqiang Fan, Minhao Zhu   +5 more
doaj   +1 more source

Effects of Adding Lignin on the Performance of Lithium-Based Grease [PDF]

Cailiao Baohu
To investigate the effect of lignin on the properties of base lithium-based grease，the performance of the grease containing lignin was evaluated using a thermogravimetric analyzer(TGA)，a differential scanning calorimeter(DSC)，a four-ball friction tester ...
SUN Shuang, SUN Yuchen, WANG Xingwei, ZHANG Chaoyang, CAI Meirong, YU Bo
doaj   +1 more source

Numerical Visualization of Grease Flow in a Gearbox

Chinese Journal of Mechanical Engineering, 2023
Lubricating greases are widely used in e.g. open gear drives and gearboxes with difficult sealing conditions. The efficiency and heat balance of grease-lubricated gearboxes depend strongly on the lubrication mechanisms channeling and circulating, for ...
Hua Liu, Florian Dangl, Thomas Lohner, Karsten Stahl   +3 more
doaj   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

Journal of Vinyl and Additive Technology, EarlyView.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi, Gianluca Sarti, Luca Palin, Enrico Boccaleri, Alberto Frache   +4 more
wiley   +1 more source

Empirical Physics‐Based Normal Behavior Modeling of Drive Train Temperatures With High‐Resolution Wind Turbine Operating Data

Wind Energy, EarlyView.
ABSTRACT The installed wind energy capacity increases every year. However, operation and maintenance costs still make up a considerable portion of the levelized costs of electricity. This costs can be greatly reduced by the application of suitable early fault detection methods. The supervisory control and data acquisition system of wind turbines is one
Timo Lichtenstein, Victor von Maltzahn, Karoline Pelka   +2 more
wiley   +1 more source

Experimental investigation of EHD grease lubrication in finite line contacts

Friction, 2018
The objective of this study was to investigate the grease-lubricated film-forming mechanisms in the finite line contact and to improve the grease-lubricated finite line contact’s film-forming capacity.
Zhijian Wang, Xuejin Shen, Xiaoyang Chen, Dehua Tao, Lei Shi, Shuangbiao Liu   +5 more
doaj   +1 more source