In the beginning, machine coolants consisted of simple oils applied with brushes to lubricate the machine tool. Occasionally, lard, animal fat or whale oil was added to improve the oil's lubricity. As cutting operations became more severe, machine coolant formulations became more complex.
The types of diesel fuel nozzles used with different types of combustion chambers are: Single hole nozzle: These are used in open combustion chambers. In these a single injection hole whose size is greater than mm is drilled through the nozzle body. The hole may be drilled centrally or at an angle. Its main disadvantages include:
By varying the mixing ratio or concentration of a water extendible coolant, you can alter the balance of cooling and lubrication. In general, the more water (leaner mix), the better the cooling; the more concentrate (richer mix), the better the lubrication provided.
2 Types of Friction. Static Friction; Sliding or Dynamic Friction; Rolling Friction; Fluid Friction
neat sketch of center type cylindrical grinding machine Manufacturing processII Question papers – SlideShare Mar 5, 2013 Explain with neat sketch open and cross belt drive mechanism of a ..
Jun 07, 2013· In 2½ memory organization the bits of a particular word are spread across multiple chips. manufacturing technology – ii – Mahalakshmi Engineering College. What is a chip Describe the different types of chips produced during metal machining with neat sketches. ( AU Dec 2010) ( .
Stator Cooling Water. ... State the purpose of hydrogen blanket on Stator Coolant tank, the normal hydrogen pressure maintained on the tank, and how to adjust hydrogen pressure List three stator coolant components which have continuous vents and at what rate to set them. List the points of control for the stator coolant pumps and identify the ...
With a neat sketch, explain the functioning of ocean thermal energy conversion (OTEC). Differentiate between: i) boiler mountings and accessories ii) dry saturated steam and super heated steam. Explain with a neat sketch, the working principle of a Lancashire boiler.
Aug 28, 2015· Steel dams are generally of two types: (i) Directstrutted steel dams, and (ii) Steel Dam. Cantilever type steel dams. In a direct strutted steel dam, the water pressure is transmitted directly to the foundation through inclined struts.
When drawing Electrical Schematics, Electrical Circuit Diagrams, Power Systems Diagrams, Circuit and Wiring Diagrams, Digital and Analog Logic Schemes, you will obligatory need the electrical symbols and pictograms to represent various electrical and electronic devices, such as resistors, wires, transistors, inductors, batteries, switches, lamps, readouts, amplifiers, repeaters, relays, transmission paths, .
This article throws light upon the five main types of layout. The types are: 1. Plant Layout 2. Process Layout 3. Product Layout 4. Combination Layout 5. Fixed Position Layout. Type # 1. Plant Layout:
Sep 02, 2012· Types of intakes. Depending upon the source, the intakes may be of the following types. Reservoir intake; The water of reservoir is likely to vary in quality at different levels. This feature makes it usually desireable to take water from about 1m below the surface.
It is a type of resistor whose resistance changes when the surrounding temperature changes. Thermistors are of two types: negative temperature coefficient (NTC) thermistors and positive temperature coefficient (PTC) thermistors.
Full Answer. At the other end of the spectrum, the boiling point of a 11 ratio of antifreeze and water is 223 F. If the blend is altered to 70 percent antifreeze to 30 percent water, the boiling point rises to 235 F. Antifreeze is made of ethylene glycol with a chemical formula of .
The waterbased fluids act mainly as coolants and the neat cutting oils act mainly as lubricants. There are many variants of both types. Fatty acids are often incorporated in the neat oils. Until recently both the emulsions or soluble oils as they are also called and
DirectContact Condensers. The disadvantage of this type of condenser is that the pressure drop is higher than in other types of directcontact condenser. The Jet Condenser. This is a device in which a jet of liquid is directed into a vapor stream, usually with the objective of desuperheating the vapor.
Pattern and its types "Pattern" making, allowances and its types: Pattern: A pattern may be defined as a model of desired casting which when moulded in sand forms an impression called mould. The mould when filled with the molten metal forms casting after solidification of the poured metal. ... Since the contraction is different for ...
May 31, 2019· There are three methods of excitation, and thus three main types of DC generators: Permanent Magnet DC Generators – Field coils excited by permanent magnets; Separately Excited DC Generators – Field coils excited by some external source; Self Excited DC Generators – Field coils excited by the generator itself
This type of layout is the least important for today's manufacturing industries. In this type of layout the major component remain in a fixed location, other materials, parts, tools, machinery, man power and other supporting equipment's are brought to this location.
Metalworking fluids can be divided into watermiscible fluids (emulsions, semisynthetics and synthetics) and neat oils. Watermiscible cutting fluids Emulsions are the most common type of cutting fluid today. An emulsion is made by adding a concentrate to water to form a milky product.
Nowadays PVC sewers are used for carrying sewage. Plastic sewers are resistant to corrosion. Such types of sewer are light in weight, smooth and can be bent easily. But Plastic sewers are having high coefficient of thermal expansion and cannot be used in very hot areas. Other types of Sewer materials. Wooden Sewers (Rare now) Stoneware Sewers
Types of Brick Bonds. Silverlock's bond. For English and Flemish bond refer in our website. 3. Stretching bond: In this arrangement of bonding, all the bricks are laid as stretchers. The overlap, which is usually of half brick, is obtained by commencing each alternate course with a half brick bat. Stretching bond is used for half brick wall only.
The power from one pulley to another may be transmitted by any of the following types of flat belt drives. Fig. 1 Cross or twist belt drive. 1. Open belt drive. The open belt drive, as shown in Fig. 2, is used with shafts arranged parallel and rotating in the same direction.
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