Oiliness Oiliness of a lubricant is a measure of its capacity to stick on to the surface of machine parts, under conditions of heavy pressure or load. It is a very important property, particularly for extreme pressure lubrication. Mineral oils have got very poor oiliness. While Vegetable oil have good oiliness. No direct test is available for measuring oiliness.
Pertamina lubricants got international approval from both automobile and heavy equipments manufacture company for lubricants quality and good performance. Embed Size px. For other uses, see Lubricant disambiguation. Mo Ml. However, liquid lubricants are much more effective on account of their high specific heat capacity. Mineral lubricants derived from Crude oil through refine. Industrial Compressor oils 4. Lubricant circulation systems have the benefit of carrying away internally generated debris and external contaminants that get introduced into the system to a filter where they can be removed. The best The properties of lubricants ppt pdf of action in such lugricants is to return it to the manufacturer where it can be processed as a part of fresh batches. No Propertties.
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Show More. Lubricants Lubricants are those substances, which are Used to reduce the force of Friction between properries sliding surfaces. Published in: Education. In such type machines where less amount of Heat is produced during motion so that the produced heat is insufficient to ignite or burn the lubricants. We use Fucking banner LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Visibility Others can see my Clipboard. Actions Shares. Classification of Lubricants 3. Views Total views. Upcoming SlideShare. Working machine presented by:- Abhishek Raj Presented by: Abhishek Raj 3. The matter has been systematically developed in the conceptual manner with suitable diagram from the basic principle propedties Lubricants.
Oiliness Oiliness of a lubricant is a measure of its capacity to stick on to the surface of machine parts, under conditions of heavy pressure or load.
It is a very important property, particularly for extreme pressure lubrication. Mineral oils have got very poor oiliness. While Vegetable oil have good oiliness. No direct test is available for measuring oiliness. SignificanceThe viscosity of the lubricating oil selected should be adequate and appropriate for specific operation. Viscosity Index V. Significance V.
The study also helps to decide about the addition of blending agents to improve the property of lubricating oil. Fire point oC It can be defined as, the temperature at which the oil gives out enough vapours which burn continuously at least five seconds when a small flame is brought near it.
SignificanceA lubricating oil should have a flash point which is reasonably above its working temperature. Significance They help us to know the lowest temp upto which the oil can be suitable as a liquid lubricant.
Knowledge of this can help the machines to be prevented from getting jammed in places from cold region or during winter season in some areas in India. They react with KOH to form potassium soaps. It is defined as the number of milligrams of KOH required to saponify one gram of oil.
Drying property of oils which is harmful during lubrication can also be checked. Such an oil becomes unsuitable for lubrication, because acids affect the machine parts.
Significance The determination of the acid value can help us known the suitability of lubricating oil. Learn more about Scribd Membership Bestsellers. Read Free For 30 Days. Much more than documents. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime.
Properties of Lubricants. Description: Properties of Lubricants. Flag for inappropriate content. Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Pour PointIt can be defined as, the temp at which the oil ceases to flow or pour. Lubricants used in machine working at low temperature should possess low pour point and cloud point otherwise it can jam the machines. Documents Similar To Properties of Lubricants.
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The properties of lubricants ppt pdf.
Khaled Hussein. Denho Mhe. Show More. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Lubricant 1. Presented by: Abhishek Raj 3. The matter has been systematically developed in the conceptual manner with suitable diagram from the basic principle of Lubricants. However, there are some motivators who come across the curvaceous path like twinkling stars in the sky and make the task much easier. It becomes our humble and foremost duty to acknowledge all of them.
Monika Sogani. Introduction Lubricants are those substances, which are Used to reduce the force of Friction between two sliding surfaces. Or, Any substance introduced between two moving sliding surfaces with a view to reduce the friction or frictional resistance between them, is known as a lubricants. The process of reducing friction between moving sliding surfaces by the introduction of lubricants in between them, is called lubrication.
Function of Lubricants 1. As a Coolant: The frictional heat generated at the a point of contact between the rubbing parts is localized at the surface peaks. The lubricating oil absorbs the heat and hence act as coolant. Function of Lubricants 2. Reduce the Frictional Resistance: To reduce the frictional resistance, is one of the main function of lubricants. Resistance free rotatory wheel presented by:- Abhishek Raj Function of Lubricants 3. Provides Protection against Corrosion: The lubricants cover the metal surface and hence the attack of atmospheric corrosive environment on metal surface is prevented.
Corroded metal 4. Improve the efficiency of the machine: Since the use of lubrication minimizes the liberation of frictional heat, it reduces expansion of metal. Working machine presented by:- Abhishek Raj Classification of Lubricants 1.
Solid Lubricants: The Lubricants existing in solid form are known as solid lubricants. Classification of Lubricants 2. Semi-Solid Lubricants: These are neither solid nor liquid. A Semisolid lubricant is obtained by combining lubricating oil with thickening agent. Grease presented by:- Abhishek Raj Classification of Lubricants 3. Liquid Lubricants: These exist in liquid form and are used to reduce friction by providing a uniform film between them.
These are also very important and are widely used in several machines and tools because They act as:a Sealing agent b Corrosion inhibitors and c Cooling medium. Example of liquid lubricants: custard oil, Synthetic oil, mineral oil, petroleum oil,etc… Condition for using liquid lubricants Where solid and semisolid lubricants are not suitable.
In light machines like watches, clocks, sewing Machines etc.. In such type machines where less amount of Heat is produced during motion so that the produced heat is insufficient to ignite or burn the lubricants. Types of Liquid Lubricating Oil Animal oil and Vegetable oils: Animal and vegetable oil are very important and are extracted from the animal and Vegetable. Kenya Merrill I discovered the sec Habit that reversed my type 2 diabetes and melted away 56lbs of fat and discovered the real cause of diabetes Vikesh Kumar , -- at Tata steel growth shop.
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Welcome To My Presentation 3. Name: Md. Lubricants Lubricants are those substances, which are Used to reduce the force of Friction between two sliding surfaces. Lubrication Lubrication is the process, or technique employed to reduce wear on surfaces in close proximity, and moving relative to each another.
No oil film Thin oil film 9. Polyglycols, Silicones, Organic amines, Imines, Amides. Thanks To All Thanks To all. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Visibility Others can see my Clipboard. Cancel Save.
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Arman Hossain Follow. Published in: Automotive. Full Name Comment goes here. Are you sure you want to Yes No. Emprove your mileage, reduce overheating and filter maintinance cost. Ask for more details vaibkush gmail. Nur Aimie. Show More. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Presentation on lubricants 1. Presentation on lubricants Presented by Md. Introduction Oil is the life blood of an engine and just like the blood in our bodies, it is required to fulfill different types of functions of engine or machinery 5.
What is Lubricants lubricants is a substance introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.
The property of reducing friction is known as lubricity. Work of lubricants 1. Reduce friction 3. Reduce corrosion 4. Reduce noise 5. Keep moving parts apart Seal for gases leakage Cleaning 7. Properties of lubricants 1. High flash point 2. Anti freeze property 3. Corrosion prevention 4.
High resistance to oxidation 5. Thermal stability 6. Anti-foaming 7. Lubricity 8. Cooling Property 9. Viscosity High Viscosity index Pour point Cloud point Total base number or Neutralization number 8. Classification of lubricants Based on condition 1. Solid lubricants 2. Semi solid lubricants 3. Liquid lubricants Based on use 1. Automotive lubricants 2. Industrial lubricants 3. Special lubricants Based on grade 1. Multi grade lubricants 2. Mono grade lubricants Based on source 1. Mineral based lubricants 2.
Synthetic based lubricants 9. Automotive lubricants are two types based engine 1. CI engine lubricants 2.
SI engine lubricants Based on different Apply 1. Engine oil or Crankcase oil 2. Transmission oil 3. Differential oil 4. Steering gear box oil Mineral based lubricants The mineral lubricants get from crude oil through refine. There are use a lot of additives in mineral lubricants for suite. Crude oil refine What is additives Oil additives are chemical compounds that used to enhance the performance of lubricants and functional fluids.
List of additives Lubricants blending with additives Classification of mineral based lubricants The mineral based lubricants are three types , namely- 1. Paraffinic oil 2. Naphthenic oil 3. Aromatic oil Paraffinic Oils Paraffinic Oils is the molecular structure of long chains of hydrocarbons that distinguish paraffinic oils from other mineral oils. Paraffinic oils contain paraffin wax and are the most commonly used base for lubricating oil products.
Qualities of paraffinic oils include a higher resistance to oxidation, a higher viscosity index and pour point and low volatility. They are used in the cosmetics industry, for processing oils in the rubber, textile, and paper industries, as industrial lubricants and for manufacturing engine oils. Naphthenic oil The molecular structure of rings of hydrocarbons distinguish naphthenic oils from other mineral oils.
Naphthenic oils do not contain paraffin wax. The qualities of naphthenic oils include good stability, low viscosity, a low pour point and high volatility. They are generally used for applications with narrow temperature ranges where a low pour point is required, such as manufacturing metal working fluids and transformer oils.
Aromatic oil Aromatic oils are vital to the tire manufacturing industry. They have a condensed ring molecular compound and, contrary to the name, do not have a pleasant smell. They have low volatility and are used to facilitate the processing of the rubber compounds. They are also key to the technical performance of tires, particularly road adherence.
Limitation of Mineral based lubricants 1.