How to measure SDAS in Aluminum alloy casting?
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C whether this helps You,\nhttp://web.umr.edu/~kpeaslee/classes/Met221/KeyHW2.pdf#search='measuring%20SDAS%20in%20Aluminum%20alloy%20casting'\n\nhttp://www.aluplanet.com/eng/info_eco_doc_PO.asp?Mnu=141&Itm=163&Grp=0&Tgl=162&Doc=3804
695687
Please see the following dry ice website.\n\nPS - I am a licensed Professional Engineer.  I reviewed the following website and found the information quite adequate.  If you need additional information you just may need to do some work.
178785
Disregard the previous gibberish.\nTo estimate purity you need to be able to interpret the spectrum to determine which peaks belong to your product.  Assuming that you can do this, the entire spectrum needs to be integrated and from the integrals of the individual peaks you can determine the ratio of impurities present and thereby estimate the purity of your product.
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The only safe way do do it is to make a chamber cast and measure the results. There's a product called Cerrosafe, which is a low-melting metal, that you can melt in a double boiler (melts at about 180F) and pour into the chamber. As it cools it will shrink, at which point you can tap it out. Once it gets to room temperature, though, it will regain its original dimensions. Once it's completely cooled, grab a caliper or micrometer and start measuring.\n\nThe problem is that just because you know the caliber, you don't necessarily know what cartridge it takes. .38 special, .357, 9x19, 9x21, 9x23 and a few other calibers all use the same diameter bullet. Better to be safe than sorry by getting accurate information.\n\nSee the link below and search for "cerrosafe." It's on sale this week at Midway USA.
562654
Okay, I'll try this one -\n\nRun this experiment twice (or more times), each time with a piece of metal having different density.  The metal piece should be of adequate size (a sewing needle isn't going to do it), it needs to be big enough to significantly affect the temperature of the water.  You will need to know the mass of the metal (i.e., weigh it) and have a thermometer capable of reading from room temperature up through boiling or so.  Please note this is not going to give you a highly accurate answer, but can give you a ballpark idea (I'm guessing you're probably not doing this in a 500 million dollar lab).\n\nThe procedure:\n\n1)  Measure and record room temperature as T1.\n\n2)  Weigh the metal, call it M1.\n\n3)  Bring a known quantity of water (weigh it, or measure it and convert to weight, call it M2) to a temperature just short of boiling (say 180F to 200F, use the same temperature for each run of this experiment).  Record the temperature as T2, and remove the heat source (take it off the burner, etc.).\n\n4)  Drop in a metal piece at room temperature.  Allow a couple of minutes for heat to exchange.  Make sure you use \nthe same amount of time for each run of this experiment.\n\n5)  Measure and record the new temperature of the water as T3.\n\n6)  Repeat with your other metal samples.\n\nYou can now estimate the specific heat capacity for each metal.  It will not be super-accurate (heat escapes your system, and temperatures won't have completely equalized), but should give you some idea.  Just assume all temperatures did equalize and that no heat escaped for calculational purposes.\n\nSince (you are assuming) the heat which left the water went into the metal, then the product of mass, specific heat capacity, and temperature change should be the same for both the metal and the water (but in opposite directions).\n\nThis means that:\n\n(M1)(c1)(T3-T1) = (M2)(cw)(T2-T3)\n\nwhere c1 is the specific heat capacity of the metal, and cw is the specific heat capacity of water (look it up on Google to get the units you need).\n\nSolving this, you get:\n\n......(M2)(cw)(T2-T3)\nc1 = -----------------\n........(M1)(T3-T1)\n\n(sorry about the dots, I'm trying to keep everything aligned)\n\nRepeat the calculations for each of the metals.\n\nYou will need to calculate (or look up) the densities of each of the metals.  Then, graph density vs. the specific heat capacities you calculated, and see if your hypothesis is true.\n\nHave fun!
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A link to a protocol from Alpco Diagnostics:\n\nhttp://www.alpco.com/pdfs/30/30-2201.pdf
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why do you need it?  how much do you want to spend to figure out what it is, or what alloy it is. \n\nyou can just do the density measurement\nmeasure the radius of the wire and length. \ndo the pi r squared length deal and then weigh it, and run it through the density equation. \n\nyou need a ruler and a calipers or micrometer that reads in inches. \n\nso lets say you have .125 inch wire.  divide that by 2 to get the radius. =  .0625"\nthen square it.  .0039" and multiply by 3.14. \n\nand multiply it by the length in inches  \n\nthen weigh it.  in lbs. \n\ndensity of al is between .096 lb/cu in. and .100 lb/cu in\n\nyou might want to buy wire that is certified as the type of aluminum you need.  the stuff is cheap.  you can get at the electical supply store or maybe a hardware store. \n\nwiring used for electical applications is 8000 series alloy for modern applications \n\nolder wire is 1350 alloy.
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Conveniently measured by Inductively coupled Plasma. Can also get other important boiler species like Al, Na, Ca,Mg,S etc
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If you asked a scientist you might get a different answer than if you asked a layman.  Let's compare a kilogram of lead with a kilogram of aluminum.  You likely would use the same scale to measure both samples.  But, the aluminum is much lighter and would take up far more space than the lead.  The samples would displace different amounts of air and the buoyancy of air would affect the scale readings by a small amount.  Therefore to obtain accurate measurements you must weigh the samples in a vacuum or calculate the buoyancy and compensate the weight measurements.  If this is true for lead and aluminum it is even more true for lead and feathers (or even lead and butter).  Chemists often do have to compensate for air buoyancy when measuring chemicals so that when they react none are left over.
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http://www.versafittings.com/images/BrsCatPg85-92.pdf#search='aluminum%20tubing%20working%20press%20ure'\n\nThis offers an I.D. and O.D> reference.
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The question is either incomlete or it doesn´t make sense. Are you looking for the atomic mass, density or somethig else.\nAs it is, the best answer to your question would be: "depends on how much aluminum".
1126751
Check with the ISA publication: Instrumentation Symbols and Identification ISA-5.1-1984.\n\nThe API (American Petroleum Institute) may also have some publications.
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Its better to get a design engineering guide from one of the plastic raw material suppliers as modifying the melt flow index would change many other properties also. A manufacturer rather than a distributor would probably provide you the information more readily.
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Here you have a free downloable PDF presentation from the 28 Sep 05 Conference Micro & Nano Technology (MNT) Measurement Club. I think it's worth to have a look.\n\n"Measuring Nanoparticle Surface Area and Porosity by Gas Sorption"\nMike Tucker, Quantachrome UK\nThe technique of gas sorption has long been used for the determination of surface area and pore size distribution of particulate systems and porous solids. While traditional sorption systems have proved adequate for the majority of tasks, the latest generation of ultra-fine materials, often coupled with microporosity offer new challenges to the sorption scientist. To meet these challenges many new developments have been made in the fields of analytical instrumentation and software modelling. The presentation will review some of the new techniques available, and provide examples to illustrate their applicability to the field of nanotechnology.\nDownload presentation: http://www.npl.co.uk/php/docs/download.php?area=metrology_clubs&path_name=/metrology_clubs/mnt/meetings/28sep05/presentations/connagh.pdf
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www.iapws.jp/Proceedings/Symposium03/200Yamaguchi.pdf\nwww.er.doe.gov/production/bes/chm/96sumbook/cesoff.html \nflux.aps.org/meetings/YR98/BAPSMAR98/abs/S3150.html
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Piston Manufacturing Techniques\n\nPistons are manufactured via a cast or forged technique. Some consider hypereutectic pistons to be the “third manufacturing technique”, but as they are actually a cast piston with physical properties that fall between cast and forged pistons due to their unique aluminum alloy. \n\nCast pistons are made by pouring melted aluminum into a mold that shapes the metal into a piston.\n\nForged pistons are formed using a giant press that takes a block of metal and pounds it into shape under thousands of tons of pressure. The tooling needed to do this is much more expensive than the tooling used to make a casting, and it wears out quicker. This makes forged pistons more costly. Forged pistons have inherent advantages in terms of density, ultimate strength, and durability. Forging eliminates metal porosity, improves ductility, and generally allows the piston to run cooler than a cast unit. Within reason, forgings can be lightened without adversely affecting structural integrity. However, forged pistons expand and contract more under changing temperatures, so they traditionally require greater piston-to-wall clearance than cast pistons. The manufacturing technique produces a metal slug, which is then CNC milled to produce the final piston shape.\n\nPiston Alloys\n\nWith regard to cast piston, they generally use aluminum alloys doped with silicone. Aluminum silicon alloys used fall into three major categories: eutectic, hypoeutectic, and hypereutectic. Probably the easiest way to describe these categories is to use the analogy of sugar added to a glass of iced tea. When sugar is added and stirred into the iced tea it dissolves and becomes inseparable from the iced tea. If sugar is continuously added, the tea actually becomes saturated with sugar and no matter how much you stir, the excess sugar will not mix in and simply falls to the bottom of the glass in crystal form.\n\nSilicon additions to aluminum are very similar to the sugar addition to the iced tea. Silicon can be added and dissolved into aluminum so it, too, becomes inseparable from the aluminum. If these additions continue, the aluminum will eventually become saturated with silicon. Silicon added above this saturation point will precipitate out in the form of hard, primary silicon particles similar to the excess sugar in the iced tea.\n\nThis point of saturation in aluminum is known as the eutectic and occurs when the silicon level reaches 12%. Aluminum with silicon levels below 12% are known as hypoeutectic (the silicon is dissolved into the aluminum matrix). Aluminum with silicon levels above 12% are known as hypereutectic (aluminum with 16% silicon has 12% dissolved silicon and 4% shows up as primary silicon crystals).\n\nPistons produced from these alloy categories each have their own characteristics. Hypoeutectic pistons usually have about 9% silicon. This alloy has been the industry standard for many years but is being phased out in favor of eutectic and hypereutectic versions. Most eutectic pistons range from 11% to 12% silicon.\n\nEutectic alloys exhibit good strength and are economical to produce. Hypereutectic pistons have silicon content above 12%. In addition to greater strength, scuff, and seizure resistance, the hypereutectic will improve groove wear and resist cracking in the crown area where operating temperatures are severe.\n\nIt is the primary silicon that gives the hypereutectic it’s thermal and wear characteristics. The primary silicon acts as small insulators keeping the heat in the combustion chamber and prevents heat transfer, thus allowing the rest of the piston to run cooler. Hypereutectic aluminum has 15% less thermal expansion than conventional piston alloys.
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This is a very technical topic that cannot be fit into this small answer box. However, the following source will answer all of your questions.\n\nThe Aluminum Extruders Council (AEC) released the "Extrusion Dies and Tooling Manual:Recommended Handling and Maintenance."\n\nThis guide is considered one ot the most important reference tools for die professionals. It contains illustrations, charts, checklists, and a glossary. Some of the chapters include: Tool Foundation; Tool alignment; Die Cleaning; and Die Correction.\n\nTo order a copy, call the AEC at 1-847-326-2010