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CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. Tools that can be controlled in this manner include lathes, mills, routers and grinders. The CNC in CNC Machining stands for Computer Numerical Control.  On the surface, it may look like a normal PC controls the machines, but the computer's unique software and control console are what really sets the system apart for use in CNC machining. Under CNC Machining, machine tools function through numerical control.  A computer program is customized for an object and the machines are programmed with CNC machining language (called G-code) that essentially controls all features like feed rate, coordination, location and speeds. With CNC machining, the computer can control exact positioning and velocity. CNC machining is used in manufacturing both metal and plastic parts.  First a CAD drawing is created (either 2D or 3D), and then a code is created that the CNC machine

in this video , you will see how friction have the power to weld two metals with each other ( this welding process also used for repairing the petroleum Tubular)  

The world celebrate with earth day every year at : 22 april for the 42th respectively in 175 country around the world , this day aims to spread the  awareness  and interest with Environment and Nature for the earth . this was found by U.S senator : Gaylord Nelson , it was held for the first time at 22 april 1970 so , with this anniversary we will review some of the scenes around the world for what we had done in nature fir using Petroleum Products and Carbon Emissions in the air which changed the climate and impact on organisms of all  kinds and  also we will see how some countries try to replace the oil sources with renewable energy sources like sun and air

in this topic we will take about the tallest Buildings in the world that has built 1- Khalefa Tower in Dubai - UAE (828 Meter long ) building starts at : 2004  finished at :  2010  it has a division for offices ,  housing , and hotels 2- Clock Tower in Makka , Saudi Arabia ( 601 Meter long ) building starts at : 2004  finished at :  2012   3- Taipei 101 Tower in Taipei town  , taiwan  (508 Meter ) started at : 1999  finished at : 2004   4-International Financial Tower in Shanghai, China (492 meters) started at : 1997  finished at : 2008 5- World Trade Centre building in Hong Kong, China (484 meters)   started at : 2002  Finished at : 2010 6,7 - Petronas Tower 1 and 2 Petronas in KualaLumpur, Malaysia (451.9 meters)   started at : 1992 Finished at : 1998 8 - Tower Sepnj, in Nangeling, China (450 meters)   started at : 2005  Finished at : 2010 9 - Willis office tower in Anues. United States (442.1 meters)   started at : 1970  Finis

Abstract : In this research we will e xplain the usage of Pipelines in our life and some problems that may happens to it and how to overcome this , we will also explain the different welding techniques and how to select the best for the needed situation . Also we will review the welding defects and how to remedies it , the defects that happens to high pressure and temperature pipelines (with actual example of el kuriemat power station and the boiler pipe problems )  , also the welding procedures , joints types , the new numerical method to avoid this welding problems   List of Contents 1.      Introduction  1.2.          Metal Pipes  1.3.          Piping  1.4.          Pipe size  1.5.          Pipe wall Thickness  2.      Classification of Pressure Piping  2.2.          Pressure Tubing 2.3.          El kuriemat electric power plant capacities 3.      Weld heat tented area induced failure of boiler water wall tubes in power generation plant 3.1.    

Top Three Common Problems for Car Engine  Once morning your engine doesn't start... What's wrong? if you know how engine works, you can understand the basic things that keep an engine from working. their is Three fundamentals reasons for that problem : lack of compression , a bad fuel mixor or lack of spark. Beyond that, thousands of minor reasons that can create problems, but these are the "mostly happens reasons" , here is a quick rundown on how these problems Lack of compression - If the charge of air and fuel cannot be compressed properly, the combustion process will not work like it should. Lack of compression might occur for these reasons: - Your piston rings are worn (allowing air/fuel to leak past the piston during compression). There is a hole in the cylinder. - The intake or exhaust valves are not sealing properly, again allowing a leak during compression - The most common "hole" in a cylinder occurs where the top of the cylinder (h

Trick Photography and Special Effects  by Evan Sharboneau is a popular Educational eBook that shows how to do make the photos trick that often capture attention and from viewers. It is detailed and includes explanations of many complicated techniques that are fun to learn. I found this eBook is very useful and original. This eBook  is inspiring with new ideas and techniques. It is three well-organized modules. Each module contains chapters and sub-chapters in order to make the vast amount of information more easily digestible. The list of the content is really just scratching the surface because each section has many sub-chapters focusing on various techniques for specific effects: LONG EXPOSURE EFFECTS & LIGHT PAINTING ( 80 PAGES ) -  Fundamental of Lights and Techniques -  Other Sources of the light -  Light Painting Techniques -  Lightning -  Motion Blur -  Star Trails -  Other Fun Long Exposures TRICK PHOTOGRAPHY AND SPECIAL EFFECTS ( 60 PAGES ) -  In-Ca