Search or ask a question

What is greased?

Best insight from top research papers

Grease is a complex lubricant used to control friction and reduce wear between rubbing surfaces. It consists of a base oil and a thickener, with specific penetration values at different temperatures to ensure optimal performance, even in extreme conditions like cold districts . The composition of grease is crucial, as it directly impacts its material-property relationship, making it a significant focus in lubricant research . Grease applications are diverse, ranging from automotive to industrial uses, where it plays a vital role in enhancing oxidation stability, corrosion resistance, and wear reduction . Understanding the nature of grease and its applications is essential for improving machinery performance and longevity in various operating environments.

Answers from top 4 papers

PDF

Open Access

More filters

Papers (4)	Insight
Reference Entry•DOI Lubrication and Lubricants James R. Dickey 17 Jun 2005 1 Citations	Grease is a type of lubricant composed of oil and a thickening agent, used to reduce friction and wear between surfaces in various applications, as discussed in the paper.
Open access•Journal Article•DOI Grease Bogdan I. Florea 16 Mar 2022-Lubricants 1 Citations	Grease is a complex lubricant crucial for various applications, with a material-property relationship explored in the "Lubricants" Special Issue, emphasizing its importance in evolving automotive and manufacturing industries.
Open access•Book Chapter•DOI Lubrication and Lubricants Robert M. Gresham, Neil M. Canter, Evan S. Zabawski, Min Zou - Show less +3 more 22 May 2013 9 Citations	Grease is a semisolid lubricant composed of oil and a thickening agent, used to reduce friction and wear between surfaces in situations where oil would not stay in place.
DOI Grease Raj C. Shah, Mathias Woydt, Simon C. Tung, Andreas Rosenkranz - Show less +3 more 16 Mar 2022-Lubricants	Grease is a complex lubricant with a significant material-property relationship, highlighted in the "Lubricants" Special Issue, focusing on recent trends in grease applications.

My columns

Related Questions

What is lubricant oil?4 answersLubricant oil is a type of oil used to reduce friction and wear between moving parts in machinery. It is composed of a base oil, which provides lubrication, and various additives that enhance its performance. These additives can include phosphorus compounds, zinc thiophosphate, calcium salicylate detergent, phosphorus acid ester compounds, polyvinyl alcohol, ethylene diamine tetraacetic acid, industrial butter, anti-wear agents, anti-wear enhancers, anti-rust agents, and copper-based composite powder materials. The specific composition and properties of lubricant oil can vary depending on its intended use and the requirements of the machinery it is used in. Lubricant oil is designed to have good abrasion resistance, high oxidative stability, adhesion at high temperature and humidity, and the ability to dissolve iron rust particles and prevent surface abrasion.

What is oil?4 answersOil is a generic term that refers to a wide range of natural hydrocarbon-based substances and refined petrochemical products. It can have different physical properties such as viscosity, density, and specific gravity, which affect its behavior in the marine environment. Crude oil is a complex mixture of chemicals that is released into the environment through chronic discharges and accidental spills. It undergoes weathering and accumulates in soil, sediment, and living organisms. The composition and weathering of crude oil determine its environmental impact, causing acute or chronic effects in various organisms. Oil is a highly versatile raw material that is used as an energy source and can be processed into numerous consumer products. However, our dependency on oil has created vulnerability and environmental devastation, leading to the realization of its technological limits. Ontologies, such as OIL, play a major role in supporting information exchange and knowledge sharing across networks, including the World Wide Web.

What is pgi treatment oil grease treatment?5 answersThe treatment of oil and grease in wastewater, also known as pgi treatment, involves various methods and systems. One approach is the use of anaerobic reactors, where two reactors are connected in series with a certain liquid level difference. Another method involves a system for treating kitchen waste grease, which includes a hot and humid hydrolysis tank and an oil and water separator. In the Malaysian palm oil industry, an immobilized bacterial-based system has been evaluated for reducing oil and grease contamination in palm oil mill effluent (POME). Additionally, an efficient separation system has been developed, which utilizes air injection and dissolved air flotation to remove pollutants from oil and grease containing wastewater. Furthermore, a pre-treatment device has been designed specifically for separating grease from kitchen wastes. These different approaches and systems contribute to the overall treatment of oil and grease in various wastewater sources.

Grease can be treated with citic and acetic acid?5 answersGrease can be treated with citric acid and acetic acid. The method described ininvolves adding polyglycerol fatty acid esters and/or sorbitol anhydride fatty acid esters to decolored oil or grease, followed by deodorization. This method helps reduce harmful substances in the grease, such as trichloropropanol ester and/or benzopyrene. Another paperdiscusses an acetic acid toilet cleaning agent, which includes acetic acid as one of its components. Whilementions the advantages of using grease as a lubricant, it does not specifically address the use of citric acid or acetic acid in treating grease. Similarly,discusses a lubricating grease with anti-rust properties but does not mention the use of citric acid or acetic acid. Lastly,describes a heat-dissipation silicone grease that resists acidic conditions, but it does not mention the use of citric acid or acetic acid either.

How do you grease a ceramic Bundt pan?6 answers

What kind of grease for ceramic bearings?4 answers

See what other people are reading

How does the combustion of different percentage of ethanol gasoline blends affect fuel efficiency?

The combustion of different percentages of ethanol-gasoline blends significantly impacts fuel efficiency. Research on ethanol-diesel blends showed that increasing ethanol content led to decreased thermal efficiency, increased fuel consumption, ignition delay, and combustion duration, along with reduced in-cylinder pressure and heat release rate. Conversely, blending unleaded fuel with ethanol improved engine efficiency, enhancing brake power, torque, thermal efficiencies, and reducing brake specific fuel consumption. Among various proportions tested, the E20 blend demonstrated the best performance in terms of brake power. Additionally, ethanol-diesel blends altered combustion and emission characteristics, with increased cylinder pressure and temperature, improved thermal efficiency, reduced CO and soot emissions, but decreased power and increased fuel consumption.How does the use of biofuel reduce the effects of cavitation on combustion?

The use of biofuels can reduce the effects of cavitation on combustion through various mechanisms. Biofuels, due to their higher viscosity, can decrease the effects of cavitation, as shown in studies focusing on the optimization of fuel properties. Additionally, the introduction of bioethanol as an additive to traditional petroleum fuels can positively impact the evaporation and detonation resistance of gasoline, ultimately improving the quality of the fuel. Furthermore, the study on boron cast iron cylinder liners indicates that cavitation erosion affects the tribological behavior, leading to increased friction coefficient and wear loss, highlighting the detrimental effects of cavitation on engine components. Overall, the incorporation of biofuels, such as bioethanol, and the optimization of fuel properties can mitigate the adverse impacts of cavitation on combustion processes in engines.What are the common methods used to enhance tool life during machining of titanium alloy?

To enhance tool life during machining of titanium alloy, common methods include the application of novel coating techniques and lubrication strategies, utilization of virtual machining systems for accurate prediction and minimization of cutting tool wear, and implementation of high-efficiency machining methods like hale machining with a rotary tool. The incorporation of micro-textures on tool faces along with AlSi-10Mg coating has shown significant improvements in tool life and machinability characteristics. Virtual machining systems aid in predicting and minimizing cutting tool wear during drilling operations of titanium alloy Ti-6Al-4V. Hale machining with a driven rotary tool, coupled with lubrication in a minimum quantity lubrication environment, has been effective in extending tool life and improving machined surface quality during titanium alloy machining.Why does polycarbonate have resistance to high temperatures?

Polycarbonate exhibits resistance to high temperatures due to the incorporation of specific additives and components in its composition. By adding high-temperature-resistant resins, such as in the PC/PBT alloy, and antioxidants, the heat resistance of polycarbonate is significantly enhanced. Additionally, the use of flame retardantsand toughening agentsfurther contributes to its ability to withstand high temperatures. These additives prevent degradation and aging of polycarbonate under elevated temperature conditions, making it suitable for applications requiring high heat resistance, such as in industrial switches, electronic appliances, and 3D printing. The synergistic effect of these components ensures that polycarbonate maintains its structural integrity and performance even in challenging high-temperature environments.What are the current literature studies on the use of cryogenic cooling in metal turning processes?

Current literature studies highlight the significance of cryogenic cooling in metal turning processes. Cryogenic cooling is recognized as an efficient method to cool cutting tools, especially when processing hard-to-cut materials, offering advantages such as improved tool properties and enhanced machining performance. Research emphasizes that cryogenic cooling can lead to reduced cutting forces, with studies showing a 16.75% to 23.5% decrease in cutting force when compared to conventional cooling methods. Moreover, advancements in cryogenic technology, such as using CO2 as an internal coolant, have shown promising results in optimizing the cooling process economically, technically, and environmentally. These findings underscore the growing importance of cryogenic cooling techniques in enhancing metal turning processes and addressing environmental concerns in machining operations.How does the choice of cooling method (cryogenic or conventional) impact the overall efficiency and cost-effectiveness of machining processes?

The choice of cooling method significantly impacts the efficiency and cost-effectiveness of machining processes. Cryogenic machining, utilizing liquid nitrogen, is gaining popularity due to its eco-friendliness and effectiveness in reducing cutting temperatures and tool wear. It optimizes the machining of difficult materials like aerospace alloys, enhancing productivity and product quality while meeting environmental constraints. On the other hand, conventional methods like air cooling and minimum quantity lubrication (MQL) are also explored for their benefits in reducing tool wear and cutting temperature-related issues. While cryogenic machining is efficient, eco-friendly, and suitable for challenging materials, conventional methods like MQL and air cooling offer economical alternatives with varying degrees of effectiveness. Ultimately, the choice between cryogenic and conventional cooling methods depends on the specific machining requirements, material properties, and environmental considerations.What are the effects of oxidation on the lubricating properties of Jatropha curcas-derived biodiesel?

Oxidation of Jatropha curcas-derived biodiesel has significant effects on its lubricating properties. The oxidation process leads to an increase in residual carbon and existent gum content, which can impact lubricant performance negatively. Additionally, the low thermal and oxidative stability of vegetable oils, including Jatropha oil, can hinder their effectiveness as lubricants. To counteract the oxidation-induced deterioration, the addition of antioxidants like Butylated hydroxytoluene and methyl gallate has been shown to inhibit carbon residue formation and reduce gum content, thereby enhancing the oxidation stability of biodiesel and improving its lubricating properties. Furthermore, exposure to sunlight and UV irradiation can accelerate the oxidation process of biodiesel, emphasizing the importance of antioxidants in maintaining lubricant quality.What is the manufacturing process of macrocrystal nitrofurantoin tablets?

The manufacturing process of macrocrystal nitrofurantoin tablets involves several methods. One approach includes synthesizing nitrofurantoin by reacting aminohydantoin hydrochloride with 5-nitrofuraldehyde diethyl ester, followed by purification steps. Another method focuses on producing large-grained nitrofurantoin crystals by heating a mixture of raw materials and DMF, then cooling and washing the resulting crystals with ethanol. Additionally, a process for tablet manufacturing utilizes a press with compression chambers and a lubrication device, where additives are incorporated into the lubricant to apply them onto the tablet surfaces during production. These methods collectively contribute to the production of macrocrystal nitrofurantoin tablets with specific particle size ranges and properties.What are the limits of the effect of hydrogen injection for remediation of thermal engines ?

Hydrogen injection in thermal engines has shown potential for emissions reduction and performance enhancement, but it also has limitations. Studies have highlighted that hydrogen enrichment may not always improve combustion efficiency, as seen in a direct-injection diesel engine where modest decreases in brake thermal efficiency were observed with hydrogen fumigation. Different hydrogen injection strategies can impact engine performance differently, affecting combustion stability and emissions. For instance, hydrogen addition in a dual-fuel port-injection engine extended the lean burn limit and improved stability of ignition and combustion, but the trade-off between thermal efficiency and NOx emissions was evident. Additionally, the optimal injection strategy, air-fuel ratio, and ignition timing play crucial roles in maximizing the benefits of hydrogen injection while mitigating its limitations.What is the research gap of peer pressure?

The research gap regarding peer pressure lies in the need for a deeper understanding of its multifaceted impacts across various domains. While studies have explored peer pressure's influence on substance abuse among psychiatric patients, college women's stress levels, and university students' deviant behavior, there remains a lack of causal evidence on how peer pressure affects team performance in different settings. Existing research highlights the significance of peer pressure in predicting substance abuse and stress levels but falls short in elucidating the mechanisms and nuances of positive and negative peer influences. Therefore, further investigation is warranted to bridge this gap by delving into the complexities of peer interactions and their consequences on behavior and performance in diverse contexts.What is the research gap of peer pressure?

Research on peer pressure has highlighted its significant impact on various aspects such as substance abuse, social adjustment, and deviant behavior. However, gaps exist in understanding the mechanisms and nuances of peer influence. While studies have shown the role of peer pressure in predicting substance abuse among psychiatric patients, there is a lack of causal evidence on how team size affects performance due to peer effects and peer pressure. Additionally, the importance of peer pressure among college women, particularly in areas like education and work, has been emphasized, indicating a need for further exploration. Furthermore, the complexity of peer influence mechanisms, including positive and negative influences, remains understudied. These gaps suggest a need for more comprehensive research to delve deeper into the dynamics of peer pressure across different contexts.