what is the sand casting?
99480
generally C.Iron castings made of green sand mould are known as sand casting.\nsand casting are cheaper for producing few nos of requirement.\nsand casting have inherent defects like blow holes,porosity,crack, and rough surface finish.
225104
Lots of regular gravel and sand of different sized granuels. They use finer material thedeeper in the leech pit you go until you will eventually get clean water out the other side. (Hopefully)
563665
its the product of erosion....soil that has been eroded from rocks become sand in the sea...then when waves move they carry the sand to the shore...
702196
A mold is when a mineral replaces a fossil, a cast is when a material fills in an area/impression that was left behind.
431504
solids (like a rock) ground into something smaller (gravel or sand)
387296
There are multiple ways to separate sand and water.  If you need the sand, you evaporate the water away.  If you need the water, you run it through a filter.  If you need them both, a centrifuge can fairly completely separate them by allowing the sand to be forced to the bottom.
1064201
There is only one basic source of sand for a beach, and that is from rivers. Secondarily, some beaches are created by ocean currents such as long-shore migration, where the sand is being moved along the shore to spots it may not have been before. \n\nAs far as river deposition, it will vary according to the sediment load of the river. The Mississippi River moves on average about 436,000 tons of sediment in a day. That one day's deposit of sediment probably has enough sand in it to create a fairly nice beach. Since the sand will most likely be deposited in a mouth bar or somewhere else on the delta, it may not be in the form of a beach, but that process is the source of almost all sand on beaches. Even beaches covered with volcanic sediments like in Hawaii still  most often depend on a river or stream to carry the sediment to the beach. In an extreme volcanic eruption a beach of volcanic ash might be deposited in a few hours. \n\nLong-shore drift creates many beaches, and is a relatively slow process. On some coastlines the wave action variation between winter and summer will make some sandy beaches disappear in winter and come back in summer, so in these cases it may only take a few months to create the beach.\n\nThe part of your question that you didn't ask: How long does it take to create the sand on a beach? That answer could be thousands to millions of years, as rock such as granite has to be weathered and eroded to create the sand grains that make up most sand.
348795
Because sand has such a high melting point that should a spark come from the candle the sand will absorb the heat rather than burn.
211196
I doubt if I can list ALL the defects possible in metal castings, but here are some of the more common ones.\n\n1.) Hairline cracks\n2.) Bubbles caused by water vapor\n3.) Alloy proportions wrong\n4.) Defect in sand mold causes blemish
323359
Ingot Casting : Process Description\n\n After it is refined, the molten steel is tapped into refractory lined ladles. The steel is then teemed (poured) into a series of ingot molds. After the ingots solidify, the ingot molds are stripped and the ingots are placed in soaking pits for heating and to equalize the internal and external temperature. Following the soak, the ingots are hot rolled in large primary rolling mills to produce slabs, blooms, or billets depending on the final products desired.\n\nMore info in link below:
633202
It is made by heating sand.\nGo to wikipedia.org\nThen type in just glass in the search engine.\nhttp://en.wikipedia.org/wiki/Glass
242517
Granite hornblende is a source of silicon.\nAs a start, have a look here:
325473
Measure the weight of 1 cup of sand and figure it from there.\n\n :-)
303122
"Sandy Loam Soil"  is almost pure sand! anything else you might like to know would be listed under "soil science" enjoy!!!
981890
Reproduction detail\n1. use of finer sand, \n2. Hydrostatics of the molten metal \n3. same as in #2\n4.Hmmm?\n5.To avoid air voids :). \n6. Not enough water and the sand will crumble, too much water the medium will be too fluid or too much of steam will be produced during casting damaging the mold from inside out.
148385
Forging is the process of shaping metal by use of heat and hammer. Whereas, casting is a process by which a material is introduced into a mold while it is liquid, allowed to solidify in the shape inside the mold, and then removed producing a fabricated object, part, or casing.
255350
It's either cast (the steel is molten and poured into a mold, like a Bundt cake), or extruded.  All by machine.